JP2014010781A - Display device, display method, control program, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a viewer to view information on a display device irrespective of the position of a presenter.SOLUTION: An electronic blackboard 1 includes a copy target identifying unit 21 that identifies copy target data on the basis of touch operation, a copy position determination unit 22 that determines a copy position for displaying a copy, and a data processing unit 25 that generates copy data from the identified copy target data and displays them at the copy position. The copy position is determined as a position away from the display position of the copy target data by predetermined distance.

Description

  The present invention relates to a display device having a touch panel, a data display method in the display device, a control program, and a recording medium.

  2. Description of the Related Art In recent years, display devices that display electronic materials such as images, moving images, documents, graphs, etc., accept writing of a presenter, and display the written information together with the electronic materials have become widespread. The display device has a touch panel, and the touch panel can accept a touch operation as if the presenter can directly write the electronic material. Such a display device is also referred to as an electronic blackboard, and is used in use scenes such as meetings, lectures, or presentations. Assuming such use scenes, these display devices have functions for changing the magnification of display information and changing the display position of information, and are designed to make it easier for viewers to see information. .

  For example, in Patent Document 1, a display position, a display direction, a display size, and the like of information displayed on a display are changed according to a positional relationship with a display of a viewer who browses information close to a large screen display. Technology is disclosed. For this reason, it is possible to realize information display that is always easy to see for a nearby viewer.

  Patent Document 2 discloses a large-screen display system that enlarges and displays information handwritten by a speaker on a hand-written information display panel so that a large number of listeners can see the information. In this system, a writable information display panel and a display dedicated panel with a larger screen are provided, and the display units (pixels) of each display panel are associated with each other. For this reason, the information input by the speaker is also displayed on the large-screen display-dedicated panel, so that a large number of viewers can view the information at a time.

  Patent Document 3 discloses a conference server that determines an easy-to-see display magnification from any position of a specific participant. Specifically, the conference server weights each distance from each participant to the main display, and determines the display magnification of the information displayed on the display based on the weighted distance. For this reason, information can be displayed at a display magnification that is easy to see from any position, regardless of the position of the participant in a specific position.

JP 2008-293419 A (released on December 4, 2008) JP 2009-162877 A (published July 23, 2009) JP 2011-227150 A (published on November 10, 2011)

  However, the above-described conventional configuration still has a problem in that some viewers whose displayed information is difficult to see appear.

  Specifically, the technique of Patent Document 1 is intended to devise a display that is easy to see for a nearby viewer. Therefore, in addition to the viewers who are close to the large-screen display, even if there are viewers viewing the display at a remote location, such distant viewers can see the information displayed on the display. There is no problem. As a specific example, as shown in FIG. 17, in addition to a viewer (presenter P) in the immediate vicinity of a large screen display (display device 2 in FIG. 17), there are a large number of locations apart from the display device 2. Suppose that there is a viewer. In this case, behind the presenter P, the electronic material (or written information) pointed by the presenter P is difficult to see or completely invisible from the positions of the viewers B to F. There's a problem. Even if the configuration of Patent Literature 2 or Patent Literature 3 is applied to the configuration of Patent Literature 1, the above-described problem cannot be solved. That is, there is still a problem that a viewer who is difficult to see or cannot see the information displayed on the display device appears. In particular, in Patent Document 3, a specific viewer may easily see information, but other viewers may have difficulty viewing information. In addition, when it is difficult to view information due to the problem of the angle between the display device and the viewer's line of sight, not the distance problem, the difficulty of viewing is not eliminated by simply displaying the information in an enlarged manner.

  The present invention has been made in view of the above problems, and its purpose is to devise a display form of information displayed on the display device in consideration of the positional relationship between the presenter and the display device. An object is to realize a display device, a display method, a control program, and a recording medium that enable a viewer to visually recognize information on the display device regardless of the position of the presenter.

  In order to solve the above problems, the display device according to the present invention performs replication target specifying means for specifying replication target data to be replicated based on a user's touch operation on the touch panel, and replication of the replication target data. Replication position determination means for determining a replication position to be displayed, and data to be replicated to generate replication data by copying the replication target data specified by the replication target specification means, and to be displayed at the replication position determined by the replication position determination means Processing means, wherein the duplication position determination means determines a position on the touch panel that is a predetermined distance away from a position where the duplication target data is displayed as a duplication position.

  For example, it is assumed that the user is a presenter who discloses data using a display device and makes a presentation to a viewer.

  According to the above configuration, the replication target specifying unit specifies the replication target data based on the user's touch operation. Here, on the touch panel, it can be inferred that the position where the touch operation is performed and the vicinity thereof are areas where it is difficult for the viewer to see information hidden behind the presenter. Therefore, the copy target specifying means can specify data displayed in an area where it is difficult to see the data hidden behind the presenter as data to be copied.

  Subsequently, the duplication position determining means determines a position on the touch panel that is a predetermined distance away from the position where the duplication target data is displayed. In this way, it is determined that the duplicate data is displayed at a position that is a predetermined distance away from the original duplicate data. In other words, the duplication position determination means can determine a display position away from the area on the touch panel that is hidden behind the presenter and difficult to see information, that is, a display position that is easy for the viewer to see. it can.

  Subsequently, the data processing means duplicates the identified duplication target data to generate duplicate data. Then, the data processing means arranges the duplicate data at the decided duplication position. As a result, the duplicate data is drawn at the duplication position on the touch panel, and is viewed by the viewer at the duplication position on the touch panel.

  As a result, the display device of the present invention replicates data displayed in the vicinity of the user (presenter), that is, data displayed at a position difficult for the viewer to see at a position easy for the viewer to see. Can be displayed.

  Here, the display process of the original copy target data is not affected by the display process of the copy data. The original copy target data is displayed in a display form that is originally displayed in accordance with a user's touch operation.

  That is, according to the present invention, in addition to being able to visually recognize the original replication target data, the viewer who can originally view the original replication target data, in addition to the viewers in other places where the original replication target data is not visible, You can view duplicate data with the same contents.

  From the above, it is possible to allow the viewer to visually recognize the data on the touch panel regardless of the position of the presenter.

  Furthermore, according to the present invention, it is possible to infer a difficult-to-see area based on the touch operation position and to specify data to be duplicated. For this reason, it is not necessary to provide a sensor or a camera for detecting the position of the presenter, and the manufacturing cost of the display device itself can be reduced.

  In the display device according to the aspect of the invention, the duplication position determining unit may further determine the duplication position on a region on the opposite side of the touch panel to the position where the duplication target data is displayed. Is preferred.

  According to the above configuration, the duplication position is determined on a region on the touch panel that is a predetermined distance away from the display position of the original duplication target data and on the opposite side of the display position in the left-right direction. The

  For example, when the replication target data is displayed in the left half area of the touch panel, the replication data is displayed in the right half area that is a predetermined distance away from the display position of the replication target data.

  As a result, it is possible to display the duplicate data while avoiding an area on the touch panel that is hidden behind the presenter and in which information is difficult to see.

  In the display device of the present invention, the duplication position determining means may further determine the duplication position on an area above the position on the touch panel where the duplication target data is displayed.

  According to the above configuration, the duplication position is a position on the touch panel that is a predetermined distance away from the display position of the original duplication target data, and from the display position on the opposite side of the display position in the left-right direction. Is also determined upward.

  As a result, it is possible to display the duplicate data while avoiding an area on the touch panel that is hidden behind the presenter and in which information is difficult to see.

  In the display device according to the aspect of the invention, the duplication target specifying unit may include data input by the touch operation based on the position of the touch operation and displayed on the touch panel or data displayed on the touch panel. The data selected by the touch operation may be specified as replication target data.

  According to the above configuration, the copy target specifying means is the latest data input by the user (presenter or the like) by touch operation or the latest data selected by the user from the data already displayed. Can be specified as data to be replicated. The duplicate data is displayed at another position by the data processing means.

  The “latest data” is, for example, attention information that is currently attracting the most attention by viewers during the presentation when the presenter makes a presentation while editing the data displayed on the touch panel. It can be said. According to the display device of the present invention, it is possible to make it possible for the viewer to visually recognize such attention information on the touch panel in real time without impairing the operability related to the editing of the presenter. . Therefore, it is possible to eliminate the inconvenience that the viewer misses the attention information during the announcement.

  The display device of the present invention is further adapted to fit the display size of the duplicate data in the touch panel with respect to the duplicate data that cannot be displayed in the touch panel when arranged at the determined duplication position. The copy size adjusting means for reducing the size may be provided.

  When the replication data of the replication target data specified by the replication target specifying means is displayed at the replication position determined by the replication position determination means, the display size of the replication data is too large and displayed on the touch panel screen. The case where it cannot be assumed is assumed. This inconveniences that duplicate data lacking a part of the content of the replication target data displayed at a position difficult for the viewer to see is displayed.

  In such a case, the duplicate size adjusting means can reduce the display size of the duplicate data so that the duplicate data is displayed within the touch panel screen even when the duplicate data is displayed at the duplicate position.

  As a result, the duplicated data is displayed at a position that is easy to see in a state that includes the content of the replication target data that is the source of the duplication, so that the above inconvenience can be avoided.

  The duplicate size adjusting means further enlarges the display size of the duplicate data within a range that fits in the touch panel with respect to the duplicate data generated with a size smaller than a predetermined size with respect to the size of the touch panel. It may be possible.

  If the display size of the replication data of the replication target data specified by the replication target specifying means is originally too small relative to the size of the touch panel, if the display size is enlarged, the replication data may be displayed more easily for the viewer. .

  In such a case, the duplicate size adjusting means can enlarge the display size of the duplicate data within a range that fits within the screen of the touch panel.

  As a result, the replicated data is displayed in an easy-to-view size in a state where it is easy to see, including the content of the replication target data of the original source, so that the viewer can confirm the information he / she wants to pay attention to in a more visible state. There is an effect.

  The duplicated data that cannot be displayed in the touch panel when arranged at the determined duplication position is divided into a plurality of elements, and the elements are rearranged so that the shape of the duplicated data fits in the touch panel. There may be provided a duplication target dividing means for changing.

  When the replication data of the replication target data specified by the replication target specifying means is displayed at the replication position determined by the replication position determination means, the display size of the replication data is too large and displayed on the touch panel screen. The case where it cannot be assumed is assumed. This inconveniences that duplicate data lacking a part of the content of the replication target data displayed at a position difficult for the viewer to see is displayed.

  In such a case, the duplication target dividing unit can change the shape of the duplicate data so that the duplicate data is displayed in the screen of the touch panel even if the duplicate data is displayed at the duplication position. Specifically, the copy target dividing unit divides the copy data into several elements. This division is performed so that the semantic content of the original replication target data is not impaired. Then, the duplication target dividing unit rearranges these elements and changes the shape of the duplicate data so that it fits within the screen even if it is displayed at the duplication position. This rearrangement is performed so that the semantic content of the original replication target data is not impaired.

  As a result, the duplicated data is displayed at a position that is easy to see in a state that includes the content of the replication target data that is the source of the duplication, so that the above inconvenience can be avoided.

  The display device of the present invention further includes a data storage unit that stores the replication target data and the replication data of the replication target data generated by the data processing unit in association with each other, and the data processing unit includes: When a touch operation instructing to hide the replication target data is accepted, the replication target data is hidden and the replication data associated with the replication target data in the data storage unit May be hidden.

  According to the above configuration, when the original replication target data is hidden according to the user operation, the data processing means also hides the replication data corresponding to the replication target data.

  As described above, the display state of the duplicate data can be changed in accordance with the display state of the original copy target data.

  Alternatively, the data storage unit stores, for each piece of replicated data, information indicating whether or not the process of the replicated data is locked, and the data processing unit stores the information on the replicated data in the data storage unit. If the lock is not set, the duplicated data may be hidden.

  According to the above configuration, the data processing means hides the duplicated data corresponding to the hidden data to be duplicated together with the case where the lock is not set as described above. On the other hand, when the lock is set, the data processing means can prevent the duplicate data from being hidden.

  As a result, the user may intentionally leave the duplicated data intentionally if he / she wishes to continue disclosing the data on the touch panel when the data of particularly important contents is duplicated. it can. Therefore, it is possible to improve the convenience of the user (for example, the presenter).

  In order to solve the above problems, a display method according to the present invention is a data display method in a display device having a touch panel, and based on a user's touch operation on the touch panel, data to be replicated is copied. A replication target specifying step for specifying, a replication position determining step for determining a replication position for displaying a copy of the replication target data, and replicating the replication target data specified in the replication target specifying step to generate replication data And a data processing step for displaying the data at the duplication position determined in the duplication position determination step. In the duplication position determination step, the predetermined distance from the position where the duplication target data is displayed on the touch panel. It is characterized in that the determined position is determined as the duplication position.

  The display device may be realized by a computer. In this case, the display device control program for causing the display device to be realized by the computer by causing the computer to operate as each of the means, and the program are recorded. Computer-readable recording media are also within the scope of the present invention.

  In order to solve the above problems, the display device according to the present invention performs replication target specifying means for specifying replication target data to be replicated based on a user's touch operation on the touch panel, and replication of the replication target data. Replication position determination means for determining a replication position to be displayed, and data to be replicated to generate replication data by copying the replication target data specified by the replication target specification means, and to be displayed at the replication position determined by the replication position determination means Processing means, wherein the duplication position determination means determines a position on the touch panel that is a predetermined distance away from a position where the duplication target data is displayed as a duplication position.

  In order to solve the above problems, a display method according to the present invention is a data display method in a display device having a touch panel, and based on a user's touch operation on the touch panel, data to be replicated is copied. A replication target specifying step for specifying, a replication position determining step for determining a replication position for displaying a copy of the replication target data, and replicating the replication target data specified in the replication target specifying step to generate replication data And a data processing step for displaying the data at the duplication position determined in the duplication position determination step. In the duplication position determination step, the predetermined distance from the position where the duplication target data is displayed on the touch panel. It is characterized in that the determined position is determined as the duplication position.

  From the above, by devising the display form of information displayed on the display device in consideration of the positional relationship between the presenter and the display device, the viewer can use the information on the display device regardless of the position of the presenter. There is an effect that it becomes possible to make it visible.

It is a block diagram which shows the principal part structure of the electronic blackboard (display apparatus) in one Embodiment of this invention. (A) is a figure which shows the data structure and specific example of the setting information which are memorize | stored in the setting memory | storage part of an electronic blackboard, and determines the duplication position, (b) is a figure which shows a duplication position by the duplication position determination part. It is a figure which shows the specific example of the coordinate system of the display part referred in order to determine. It is a figure which shows the external appearance and utilization form of the electronic blackboard of this invention. It is a figure which shows the other specific example of the coordinate system of a display part. (A) And (b) is a figure which shows the other specific example of the coordinate system of a display part. It is a flowchart which shows the flow of a process of the electronic blackboard in embodiment of this invention. It is a flowchart which shows the flow of the expansion / contraction process of a replication size adjustment part. (A) is a figure which shows the other example of a duplication position determination table, (b) shows the other example of the coordinate system of the display part which a duplication position determination part refers in order to determine a duplication position. FIG. It is a figure which shows the positional relationship of a display part and a presenter. (A) is a figure which shows the other example of a duplication position determination table, (b) shows the other example of the coordinate system of the display part which a duplication position determination part refers in order to determine a duplication position. FIG. It is a figure which shows the other example of the coordinate system of the display part which a duplication position determination part refers. It is a figure which shows the other example of the coordinate system of the display part which a duplication position determination part refers. It is a figure which shows the data structure of the decoration setting information memorize | stored in the setting memory | storage part, and a specific example. (A) And (b) is a figure which shows a specific example when the replication data to which the decoration was given are displayed on the display part. It is a figure which shows the data structure of the data table memorize | stored in the data storage part, and a specific example. It is a flowchart which shows the flow of the process which a data processing part performs with respect to the data already shown. It is a figure which shows a prior art and shows the external appearance and utilization form of an electronic blackboard.

Embodiment 1
An embodiment of the present invention will be described below with reference to FIGS.

  In the following embodiments, a case where the display device of the present invention is realized by an electronic blackboard will be described as an example. Further, an example in which the electronic blackboard is used in a scene where a presenter makes a presentation to a plurality of viewers will be described. However, the display device of the present invention is not limited to an electronic blackboard, and can be applied to any display device of any size provided with a touch panel. In addition, the display device of the present invention is not limited to the above-described scene, and can function as a display device (signage, tablet PC, smartphone, etc.) utilized in any scene.

  In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated. In addition, dimensional relationships such as length, size, and width, and shapes in the drawings are appropriately changed for clarity and simplification of the drawings, and do not represent actual dimensions and shapes.

  The electronic blackboard (display device) of the present invention reproduces the data used by the presenter for presentation at the time, and separates it from the original data display position of the electronic blackboard. The display form is devised by displaying the duplicate at the position. In this way, at least the information that the presenter is currently presenting can be viewed by viewers from all angles without being hidden behind the presenter. The configuration and operation of such an electronic blackboard will be described in detail below.

[Configuration of electronic blackboard]
FIG. 1 is a block diagram showing a main configuration of an electronic blackboard (display device) 1 according to an embodiment of the present invention.

  As shown in FIG. 1, the electronic blackboard 1 of the present invention includes at least a control unit 10, a storage unit 11, an operation unit 12, and a display unit 13. Furthermore, although not shown, the electronic blackboard 1 may include various components that are normally provided in the electronic blackboard, such as a communication unit, a voice input unit, a voice output unit, and various input / output terminals.

  The operation unit 12 is an input device that allows a user (for example, a presenter) to input an instruction signal to the electronic blackboard 1. In the present embodiment, the operation unit 12 is configured as a touch panel together with the display unit 13. The operation unit 12 includes a touch surface that receives contact of an indicator (such as a finger or a pen), a contact between the indicator and the touch surface, and a touch sensor that detects the contact position. . The touch sensor may be realized by any sensor as long as it can detect contact / non-contact between the indicator and the touch surface. For example, it is realized by a pressure sensor, a capacitance sensor, an optical sensor, or the like. The operation unit 12 supplies a signal generated by the user's touch operation to the control unit 10 described later.

  The display unit 13 is a display device that displays information processed by the electronic blackboard 1. For example, the display unit 13 displays an image based on the image signal output by the display control unit 26 described later. The display unit 13 is configured by a display device such as an LCD (liquid crystal display). In the present embodiment, since the operation unit 12 and the display unit 13 are configured as a touch panel, they are integrated.

  The storage unit 11 includes (1) a control program executed by the control unit 10 of the electronic blackboard 1, (2) an OS program executed by the control unit 10, and (3) various functions that the control unit 10 has in the display device of the present invention. And (4) various data to be read when executing the application program are stored non-temporarily. For example, the above data (1) to (4) include ROM (read only memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (registered trademark) (Electrically EPROM), HDD (Hard Disc Drive), etc. Stored in a storage device.

  As illustrated in FIG. 1, the storage unit 11 includes a setting storage unit 30 and a data storage unit 31. The data structure and specific examples of data stored in each of these units will be described in detail later.

  The electronic blackboard 1 may include a temporary storage unit (not shown). The temporary storage unit is a so-called working memory that temporarily stores data used for calculation, calculation results, and the like in the course of various processes executed by the electronic blackboard 1, and is composed of a storage device such as a RAM (Random Access Memory). Is done.

  Which data is to be stored in which storage device is appropriately determined from the purpose of use, convenience, cost, physical restrictions, and the like of the electronic blackboard 1.

  The control unit 10 performs overall control of each unit included in the electronic blackboard 1. In order for the control unit 10 to function the electronic blackboard 1 as a display device of the present invention, at least the coordinate information output unit 20, the duplication target specifying unit 21, the duplication position determination unit 22, the data processing unit 25, and display control In this configuration, the unit 26 is provided. The control unit 10 may further include a duplication size adjusting unit 23 and a duplication target dividing unit 24.

  Each functional block of the control unit 10 described above includes, for example, a storage device (storage unit 11) in which a central processing unit (CPU) or the like is realized by a read only memory (ROM), a non-volatile random access memory (NVRAM), or the like. This can be realized by reading the program stored in the RAM into a RAM (random access memory) (not shown) and executing it.

  The coordinate information output unit 20 of the control unit 10 indicates the presence / absence of the detected touch operation and the coordinate information of the touch position to each unit of the control unit 10 based on the signal related to the user's touch operation received by the operation unit 12. Supply. The coordinate information output unit 20 can hold the coordinate information of the touch position in time series. Then, the coordinate information of the locus of the touch operation (drag operation, flick operation, pinch-in / pinch-out operation, long press operation, etc.) input continuously over a certain period may be supplied to each unit.

  The duplication target specifying unit 21 specifies data to be duplicated among the data displayed on the display unit 13 according to the presenter's announcement content. The data to be replicated refers to data that the presenter refers to at the time of presentation and is displayed in a position hidden behind the presenter and invisible to the viewer.

  In this embodiment, the duplication target specifying unit 21 specifies the data written by the touch operation via the operation unit 12 and the selected data by the presenter as original data (duplication target data) to be duplicated. To do. The data written or selected by the touch operation is the data that is now referred to by the presenter, and the data that the viewer wants to pay attention to most now. In addition, the touch operation being performed means that the presenter is close to the display unit 13, and the vicinity of the touch position on the display unit 13 is hidden behind the presenter from the viewer. There is a high possibility that it is not visible. As described above, the duplication target specifying unit 21 specifies data to be duplicated according to the touch operation. As a result, the duplication target specifying unit 21 can correctly specify the original data to be duplicated so that the appropriate data that needs to be duplicated is duplicated.

  For example, when the presenter writes a handwritten sentence on the touch panel by a drag operation, the duplication target specifying unit 21 may input a sentence, a sentence, a word, or a single character that is input continuously for a certain period of time. May be specified as one original data to be copied. Alternatively, when the presenter performs a tap operation on an image displayed on the touch panel, the duplication target specifying unit 21 may specify the selected image data as one original data to be duplicated.

  The replication position determination unit 22 determines the display position of the replication data when the replication of the original data (hereinafter referred to as replication data) is created. As described above, the duplicated data is generated and displayed in order to eliminate the situation where the currently referred data (attention information) is hidden behind the presenter and cannot be seen. Therefore, the duplication position determination unit 22 decides a display position different from the original data, and further, a display position sufficiently separated from the display position of the original data (that is, the touch position of the presenter) as the display position of the duplication data. It is preferable to do. The electronic blackboard 1 holds a coordinate system corresponding to the display unit 13. The duplication position determination unit 22 may specify the display position of the duplication data using the coordinate values in the coordinate system. A method by which the duplication position determination unit 22 determines the display position of the duplication data will be described in detail later with reference to the drawings.

  The duplicate size adjustment unit 23 adjusts the display size of the duplicate data as necessary. A method of determining the display size by the copy size adjusting unit 23 will be described in detail later with reference to the drawings.

  The duplication target dividing unit 24 further divides one piece of duplicated data into a plurality of elements as necessary. For example, the duplication target dividing unit 24 can divide the duplicated data for each word or phrase for the duplicated data in which the handwritten text specified as one original data is duplicated. The duplication target dividing unit 24 re-arranges each divided element, and as a result, can change the shape of the duplicate data. The dividing method performed by the replication target dividing unit 24 will be described in detail later with reference to the drawings.

  The data processing unit 25 processes various data displayed on the display unit 13. The data processing unit 25 processes specified data (original data or duplicated data) with a predetermined event occurrence as a trigger or according to a user's touch operation.

  In the present embodiment, the data processing unit 25 creates duplicate data by duplicating the original data identified by the duplication target identifying unit 21 and arranges it at the display position determined by the duplication position determining unit 22. The copy data generated by the data processing unit 25 may be changed in size by the copy size adjusting unit 23 or may be divided into a plurality of elements by the copy target dividing unit 24 to change the layout. Further, the data processing unit 25 may change the design of the duplicate data according to the setting information stored in the setting storage unit 30. Finally, the data processing unit 25 outputs the replication data finally generated as described above to the display control unit 26. The data processing unit 25 may store the generated duplicate data in the data storage unit 31 in association with the original data.

  Alternatively, the data processing unit 25 may generate an image for visualizing a character string according to a locus of handwritten input (drag operation) performed by the presenter. The data generated as a visualized image according to the touch operation of the presenter and displayed on the display unit 13 is the original data.

  Alternatively, the data processing unit 25 controls display and non-display of the original data and the duplicate data on the display unit 13. In this specification, “non-display” of data simply means that the data is not displayed on the display unit 13, that is, the data processing unit 25 leaves the data in the data storage unit 31 while the data is stored. You may not supply to the display control part 26. FIG. Alternatively, “non-display” of data may mean that the data processing unit 25 deletes (and does not display) the data from the data storage unit 31.

  Furthermore, the data processing unit 25 may have a function of setting a lock on the replicated data. For example, when the designated copy data is locked in accordance with a user instruction, the data processing unit 25 prohibits the hidden copy data from being hidden (or deleted). A specific example of data processing executed by the data processing unit 25 will be described later with reference to another drawing.

  The display control unit 26 outputs video signals of the various data to the display unit 13 in order to visualize the various data processed by the control unit 10 on the display unit 13. In the present embodiment, in particular, a video signal including original data or duplicate data generated by the data processing unit 25 is output and rendered on the display unit 13. More specifically, when the display unit 13 is realized by a liquid crystal display, the display control unit 26 outputs a signal instructing driving of each pixel of the liquid crystal panel to display data as a visualized image. And output to the display unit 13.

[Determination of duplication position]
FIG. 2A is a diagram illustrating a data structure and a specific example of setting information stored in the setting storage unit 30 and related to determination of the duplication position. In FIG. 2A, the setting information is shown as a table format data structure, and is not intended to limit the setting information data structure to the table format. Hereinafter, the same applies to other figures for explaining the data structure. The setting information related to the determination of the duplication position is hereinafter referred to as a duplication position determination table.

  The replication position determination unit 22 can determine the display position of data to be replicated by referring to the replication position determination table.

  As shown in FIG. 2A, the duplication position determination table has a touch position column and a duplication position column, which are held in association with each other.

  The touch position column stores information indicating which region of the display unit 13 (touch panel) the start position of the touch operation by the user (for example, a presenter) belongs to. In the present embodiment, the area of the display unit 13 is defined in advance divided into a left half and a right half. Therefore, two records of “display part_left” indicating the left half of the display part 13 and “display part_right” indicating the right half of the display part 13 are stored in the touch position column.

  The duplication position column stores a procedure for calculating the coordinates of the duplicate data with reference to the coordinates of the specified original data. The duplication position calculation procedure is set for each touch position. The duplication position calculation procedure shown in (a) of FIG. 2 is an example, and the configuration of the duplication position determination unit 22 is not limited.

  In the example shown in FIG. 2A, the duplication position determination unit 22 performs the procedure of “Xc ← Xo + d, Yc ← Yo” when the user's touch position is on the left half area of the display unit. Therefore, the display position of the duplicate data is determined. On the other hand, when the user's touch position is on the right half area, the procedure of “Xc ← Xo−d, Yc ← Yo” is adopted. Here, Xo represents the X coordinate of the original data in the coordinate system of the display unit 13, and Yo represents the Y coordinate of the original data. Xc represents the X coordinate of the duplicate data, and Yc represents the Y coordinate of the duplicate data.

  FIG. 2B is a diagram illustrating a specific example of the coordinate system of the display unit 13 that is referred to by the replication position determination unit 22 to determine the replication position (display position of the replication data). As an example, the display unit 13 is defined as a horizontal 2d × vertical d region with the origin at the upper left corner of the screen in the coordinate system. Since the unit may be any pixel, centimeter, or inch, the unit display is omitted here.

  It is assumed that the user has written the character “T” (character 40) on the touch panel. In this case, the copy target specifying unit 21 specifies the character 40 as original data to be copied.

Subsequently, the duplication position determination unit 22 first acquires the reference position of the character 40. Here, the duplication position determination unit 22 acquires the start point of the touch operation, that is, the X and Y coordinates of the reference point 40s as the position of the original data. The duplication position determination unit 22 determines that the touch position is the left half of the display unit 13 based on the X and Y coordinates of the reference point 40 s. Then, with reference to the replication position determination table, the replication position calculation procedure associated with “display unit_left” is read out. The replication position determination unit 22 calculates the X and Y coordinates (Xc, Yc) of the replication data based on the position of the original data according to the read calculation procedure. That is,
Xc = Xo + d
Yc = Yo
Ask for.

  When the original data is displayed on the left half of the display unit 13, it is preferable that the duplicate data is displayed on the right half of the display unit 13 on the opposite side and sufficiently away from it. Therefore, in the example shown in FIGS. 2A and 2B, the duplication position is determined at a distance d (predetermined distance) to the right from the position of the original data. The value of this offset information (distance d) corresponds to half of the horizontal length 2d of the display unit 13, and the above condition is considered to be satisfied if duplicate data is displayed at least d or more away. It is done. That is, a viewer who has not seen the original data can see the duplicate data. The information in the replication position determination table stored in the setting storage unit 30 may be configured to be arbitrarily set by the user. For example, instead of the value of the distance d, a duplication position calculation procedure that adopts another value specified by the user may be stored in the duplication position determination table. In this case, a setting information input unit (not shown) of the control unit 10 receives the other value input via the operation unit 12 and updates the duplication position calculation procedure stored in the setting storage unit 30. Further, the duplication position calculation procedure may include not only offset information in the X-axis direction but also offset information in the Y-axis direction.

  The replication position determination unit 22 obtains (Xc, Yc) according to the above-described replication position calculation procedure, and determines the replication position of the original data (character 40) as the reference point 41s.

  The data processing unit 25 generates duplicate data (character 41) by duplicating the character 40 and arranges it at the determined duplication position. The data processing unit 25 may store the generated duplicate data in the data storage unit 31 non-temporarily. The display control unit 26 draws the duplicated data (character 41) at the reference point 41s on the display unit 13.

  Thereby, the original data (character 40) and the duplicate data (character 41) obtained by duplicating the original data are displayed on the display unit 13.

  The advantages of the electronic blackboard 1 of the present invention will be described with reference to FIG. FIG. 3 is a diagram showing the appearance and usage of the electronic blackboard 1 of the present invention.

  When the presenter P is writing the character 40 at the position of the reference point 40s, the character 40 is hidden behind the presenter P or cannot be seen depending on the position of the viewer (viewers A to F). It can be difficult. For example, in the example shown in FIG. 3, the original data (character 40) may be visible to the viewer A, but may be difficult to see for the viewers B to F or may not be visible at all. However, the data written by the presenter P is the information that is just referred to during the presentation, and the information that the viewer pays most attention to is not visible, which causes inconvenience for the viewer.

  According to the configuration of the electronic blackboard 1 of the present invention, the character 40 is duplicated, and the character 41 which is the duplicated data is displayed at a position opposite to the display position of the character 40 which is the original data and at a position sufficiently away from the display position. (FIG. 2 (b) and FIG. 3). Therefore, most viewers can visually recognize at least one of the character 40 and the character 41, and can eliminate the inconvenience of missing the attention information. In the example shown in FIG. 3, the viewers B to F did not see the original data displayed on the left half of the display unit 13 in the shadow of the presenter P, but copied on the right half of the display unit 13. You will be able to see the data.

  Even when the information written by the user is the character 41, similarly, the electronic blackboard 1 can display the duplicate data at the position of the display unit 13 opposite to the original data and sufficiently away from the original data. It becomes possible. The duplication position determination unit 22 refers to the duplication position calculation procedure associated with the touch position “display unit_right” in the duplication position determination table of FIG. According to this procedure, the replication position determination unit 22 determines the display position of the replication data of the character 41 as the reference point 40s. The data processing unit 25 arranges the character 41 in addition to the written character 40 at the position of the reference point 40 s on the display unit 13.

[Identification of replication target]
When the character string is input by handwriting by the user, the duplication target specifying unit 21 continuously inputs characters when a plurality of character strings are continuously input at intervals of very short contact time. It is preferable that the columns are collectively specified as one original data.

  It should be noted that the determination as to whether the data is to be collected as one original data or recognized as another original data by the copy target specifying unit 21 is the setting information (hereinafter referred to as “replication target”) stored in the setting storage unit 30. It may be executed according to (target identification setting information). For example, when the target specifying setting information is set to “1 second”, the copy target specifying unit 21 specifies a character string continuously input with a non-contact time of less than 1 second as one original data. May be. Alternatively, when the target specifying setting information is set to “1 phrase”, the copy target specifying unit 21 may specify the handwritten input sentence as one original data in phrase units.

  FIG. 4 is a diagram illustrating another specific example of the coordinate system of the display unit 13.

  As illustrated in FIG. 4, for example, it is assumed that the user continuously inputs a character “T” and a character “e”. In this case, the duplication target specifying unit 21 specifies the character string “Te” as one original data. The duplication position determination unit 22 determines the reference point 43s of the duplicate data based on the reference point 42s of the character string “Te”. Since the reference point 42 s belongs to the left half area of the display unit 13, the replication position determination unit 22 sets the display position of the replication data “Te” to the position of the reference point 43 s separated by the distance d to the right. decide.

  Thus, the display control unit 26 draws the duplicated data “Te” at the position of the reference point 43s.

  According to the above configuration, even if the continuously input character strings are written across the left half area and the right half area of the display unit 13, these character strings are stored in the original data. Similarly, they are arranged side by side in one place (FIG. 4). That is, each character is not separately arranged in the right half and the left half of the display unit 13. Specifically, the character string “Te” is collectively arranged in the right half of the display unit 13. The letter “T” is duplicated in the right half and the letter “e” is not duplicated in the left half. Therefore, it is possible to avoid the inconvenience that the character string is replicated in units of characters that do not make sense and the semantic content of the attention information is difficult to understand.

[Adjusting the size of replicated data]
The duplicate size adjustment unit 23 can adjust the display size of the duplicate data as necessary.

  5A and 5B are diagrams showing another specific example of the coordinate system of the display unit 13. FIG.

  When the original data specified by the copy target specifying unit 21 is copied without changing the size, if the original data is arranged at the copy position determined by the copy position determining unit 22, it does not fit within the screen of the display unit 13. A case is assumed.

  In such a case, the copy size adjustment unit 23 may reduce the size of the copy data so that the copy data fits within the screen of the display unit 13. For example, in the example shown in FIG. 5A, when the original data 44 is copied as it is at the position of the reference point 45s, the copied data does not fit in the screen of the display unit 13. Therefore, the copy size adjustment unit 23 reduces the size of the copy data so that the copy data fits in the screen when the copy data is displayed at the position of the reference point 45s. The data processing unit 25 arranges the duplicate data 45 whose size has been reduced by the duplicate size adjusting unit 23 at the position of the reference point 45s.

  As a result, the display control unit 26 can display the duplicated data 45 at the position of the reference point 45s on the display unit 13 without missing the contents of the original data 44.

  When the original data input by the user is originally so small that it is difficult for the viewer to see, even if the original data is copied as it is, it is assumed that the difficulty of viewing is still not solved.

  In such a case, the copy size adjusting unit 23 may increase the size of the copy data so that the copy data is easier to see. For example, in the example shown in FIG. 5B, the size of the original data 46 is extremely small with respect to the screen size of the display unit 13. Even if the duplicate data is displayed as it is, it is still viewed by the viewer. It may be difficult. Therefore, when the duplicate data is displayed at the position of the reference point 47s, the duplicate size adjusting unit 23 increases the size of the duplicate data within a range where the duplicate data does not protrude from the screen. The data processing unit 25 arranges the duplicate data 47 whose size has been enlarged by the duplicate size adjusting unit 23 at the position of the reference point 47s.

  As a result, the display control unit 26 can display the duplicated data 47 at a position of the reference point 47s of the display unit 13 in a size that is sufficiently easy for the viewer to see.

  Here, the reference for determining whether or not the copy size adjustment unit 23 needs to be enlarged may be stored in the setting storage unit 30 in advance. When the setting information related to size enlargement / reduction (hereinafter referred to as “enlargement / reduction setting information”) is set to “2%”, the copy size adjustment unit 23 sets the size of the specified original data to the size of the display unit 13. What percentage is obtained, and this is compared with the scaling setting information. When the size of the original data is less than 2% of the size of the display unit 13, the copy size adjustment unit 23 can determine that the copy data needs to be enlarged.

  In the above-described example, the copy size adjustment unit 23 is configured to dynamically determine whether or not enlargement / reduction is necessary and the enlargement / reduction ratio according to the size of the input original data and the display position of the copy data. However, the configuration of the replica size adjusting unit 23 is not limited to the above. The copy size adjustment unit 23 may be configured to execute a fixed size enlargement / reduction process on the copy data according to the enlargement / reduction ratio stored in advance in the setting storage unit 30. In this case, the enlargement / reduction setting information stored in the setting storage unit 30 includes information on a fixed enlargement ratio or reduction ratio. This enlargement / reduction setting information may be set in advance by the user. The duplicate size adjustment unit 23 reads the enlargement / reduction setting information stored in the setting storage unit 30 and can enlarge or reduce the duplicate data according to the designated enlargement rate or reduction rate.

[Process flow]
FIG. 6 is a flowchart showing the flow of processing of the electronic blackboard 1 in the embodiment of the present invention.

  It is assumed that a user (for example, the presenter P) performs a touch operation on the touch panel (operation unit 12) and inputs a handwritten character. In this case, the coordinate information output unit 20 outputs the coordinate information (touch operation trajectory) of the touch position in time series (S100).

  Although not shown, the data processing unit 25 generates, as original data, an image that visualizes a handwritten character string input by the user based on the trajectory. On the other hand, the duplication target specifying unit 21 specifies data (the original data) to be copied based on the trajectory (S102). Here, the data processing unit 25 may generate duplicate data of the original data specified by the copy target specifying unit 21.

  Next, the replication position determination unit 22 refers to setting information related to determination of the replication position stored in the setting storage unit 30, that is, a replication position determination table, in order to determine the display position of the replication data. . In particular, the replication position determination unit 22 reads a replication position calculation procedure corresponding to the start position of the touch operation from the replication position determination table (S104). The duplication position determination unit 22 can grasp the start position of the touch operation from the start point of the trajectory.

  Subsequently, the replication position determination unit 22 determines a replication position (S106). The duplication position determination unit 22 determines the display position (Xc, Yc) of the duplicate data based on the display position of the original data, that is, the coordinates (Xo, Yo) of the reference point, according to the duplication position calculation procedure. can do.

  Here, the copy size adjustment unit 23 may change the size of the copy data as necessary (S108).

  As described above, when the content, display position, and display size are determined for the duplicate data, the data processing unit 25 generates duplicate data based on the decision and outputs the duplicate data to the display control unit 26. The display control unit 26 displays the duplicate data together with the original data on the display unit 13 (S110). The duplicate data is displayed at the duplication position determined in S106.

  According to the above method, the duplication position of the duplication data is determined according to the duplication position calculation procedure. The duplication position determined in this way is on the side opposite to the display position of the original data and is sufficiently away from the original data.

  Therefore, most viewers can visually recognize at least one of the original data and the duplicated data, and the inconvenience that the information to be noticed cannot be seen can be eliminated.

  In S108, the copy size adjustment unit 23 may enlarge or reduce the size of the copy data as follows.

  FIG. 7 is a flowchart showing the flow of enlargement / reduction processing of the copy size adjustment unit 23.

  The copy size adjustment unit 23 refers to the enlargement / reduction setting information (for example, “2%”) stored in the setting storage unit 30, and the display size of the input original data corresponds to the screen size of the display unit 13. It is determined whether or not it is extremely small (S200). For example, it is determined whether the display size of the original data is less than 2% with respect to the screen size.

  If the copy size adjustment unit 23 determines that the display size is extremely small (less than 2%) (YES in S200), the copy size adjustment unit 23 enlarges the copy data of the original data (S202). Here, the method by which the copy size adjusting unit 23 determines the enlargement ratio is not particularly limited. The duplicate size adjusting unit 23 enlarges the duplicated data so that it becomes a standard size that can be easily viewed by the viewer within a range that does not protrude from the screen of the display unit 13.

  On the other hand, when it is determined that the display size of the original data is extremely large and the copy data does not fit on the screen when arranged at the determined copy position (NO in S200, NO in S204), the copy size adjustment unit 23 reduces the duplicated data (S206). Here, the method by which the copy size adjusting unit 23 determines the reduction rate is not particularly limited. The duplicate size adjusting unit 23 reduces the duplicate data so that it fits on the screen of the display unit 13 and is as easy as possible for the viewer to see.

  If the display size of the original data is not extremely small relative to the screen and does not protrude from the screen (NO in S200, YES in S204), the copy size adjustment unit 23 sets the copy data. It is determined that the enlargement / reduction process is unnecessary, and the series of processes is terminated without executing the enlargement / reduction process.

  According to the above method, the replicated data is always displayed on the display unit 13 in an easy-to-see size without missing the contents of the original data. As a result, it is possible to improve the visibility of attention information for the viewer.

[Modification 1—Duplicate Position Determination]
In the example shown in FIGS. 2A and 2B, offset information (such as “+ d” in FIG. 2A) for determining the replication position in the replication position determination table is only in the X-axis direction. The configuration was set. However, offset information can also be set in the Y-axis direction.

  In the replication position determination table, there are two areas of the display unit 13 defined for determining the touch position, the left half and the right half. However, four areas obtained by dividing the display unit 13 into four parts in the vertical and horizontal directions may be defined as areas for determining the touch position.

  (A) of FIG. 8 is a figure which shows the other example of a duplication position determination table. FIG. 8B is a diagram illustrating another example of the coordinate system of the display unit 13 that is referred to by the duplication position determination unit 22 to determine the duplication position.

  In the duplication position determination table shown in FIG. 8A, the duplication position calculation procedure is a data structure having offset information in both the X-axis direction and the Y-axis direction with respect to the display position of the original data. Further, in the above-described duplication position determination table, different duplication position calculation procedures are associated with each of the four areas of the upper left, upper right, lower left, and lower right of the display unit 13.

  For example, referring to FIG. 8B, it is assumed that the original data is written at the position of the reference point 48. In this case, the replication position determination unit 22 determines the display position of the replication data as the reference point 48 ′ in accordance with the replication position calculation procedure associated with “display unit_upper left”.

  According to the above configuration, the duplicate data is displayed on the opposite side of the original data and at a position sufficiently away from the original data. In addition, since the duplicated data is displayed at a position above the original data, it is possible to reduce the possibility that the user (presenter) hides it by the hand that he / she has given for writing. Therefore, it becomes possible to display the replicated data at a position that is easier for the viewer to see.

  Similarly, when a handwritten character is input at another touch position, the duplication position determination unit 22 similarly determines the duplication position based on the vertical and horizontal offset information. When the original data is at the position of the reference point 49, the duplication position determination unit 22 determines the display position of the duplication data as the reference point 49 '. When the original data is at the position of the reference point 50, the duplication position determination unit 22 determines the display position of the duplication data as the reference point 50 '. When the original data is at the position of the reference point 51, the duplication position determination unit 22 determines the display position of the duplication data as the reference point 51 '. When the display position of the original data is the lower half of the display unit 13, the upper half has a space, so the copy position is higher than the display position of the original data (minus in the Y-axis direction). May be determined. Thus, the duplicated data is displayed in a position sufficiently separated from the original data in the display unit 13.

[Variation 2-Determination of Duplicating Position]
In the example illustrated in FIG. 4, the duplication position determination unit 22 starts touch operation of the first input character even if the character string crosses the boundary of the defined area with respect to the continuously input character string. In this configuration, the replication position is determined based on the position. However, with such a configuration, when characters are input in horizontal writing, there may still be a problem that the duplicated data is hidden behind the presenter P and cannot be seen.

  FIG. 9 is a diagram illustrating a positional relationship between the display unit 13 and the presenter P. For example, it is assumed that the presenter P starts to write characters near the center of the left half of the display unit 13. Here, when characters are input in horizontal writing, in a specific language (English, Japanese, etc.), the characters are expected to be written from left to right. Accordingly, the position of the presenter P is also predicted to move from left to right.

  Here, according to the configuration of the present embodiment, since the position of the original data (reference point 52) is the left half of the display unit 13, the duplication position is determined to be the position of the right half (reference point 52 ′). Duplicate data is displayed here.

  However, as described above, since the presenter P moves to the right as the characters are written, the duplicate data displayed in the right half of the display unit 13 is immediately hidden behind the presenter P and cannot be seen. . In such a case, it is preferable that the duplicate data is displayed in the left half area.

  Therefore, in this example, the duplication position determination unit 22 is configured to predict the movement of the presenter P and the position after the movement according to whether the character input progress direction is the left or right direction. And the duplication position determination part 22 is the structure which determines a duplication position according to a prediction result.

  (A) of FIG. 10 is a figure which shows the other example of a duplication position determination table. FIG. 10B is a diagram illustrating another example of the coordinate system of the display unit 13 that is referred to by the duplication position determination unit 22 to determine the duplication position.

  In the duplication position determination table shown in FIG. 10A, the display unit 13 is divided into three in the left-right direction, and includes a left 1/3 area, a central 1/3 area, and a right 1/3 area. A structure in which two areas are defined.

  Further, the replication position determination table has a column in the traveling direction. The advance direction column stores information defining the advance direction of character input. The duplication position determination unit 22 can specify the direction of character input according to the type of the language of the input character and whether it is vertical writing or horizontal writing. For example, if the language is English, the traveling direction can be specified as right. Alternatively, if the language is Japanese and horizontal writing, the traveling direction can be specified as right. Alternatively, if the language is Japanese and vertical writing, the direction of travel can be specified as left.

  Each of the left 1/3 area and the right 1/3 area is associated with each duplication position calculation procedure as before.

  This example is characterized in that, in the duplication position determination table, another duplication position calculation procedure is associated with the central region for each character input traveling direction.

  With reference to (b) of FIG. 10, for example, it is assumed that the user (presenter P) starts character input from the central area of the display unit 13. It is assumed that the user inputs English in horizontal writing.

  In this case, the replication position determination unit 22 determines that the display position of the original data is the position of the reference point 53 and is on the center area. Then, the duplication position determination unit 22 determines that the language of the input character is English, horizontal writing, and the character input progress direction is right.

  Then, the duplication position determination unit 22 reads the duplication position calculation procedure associated with the touch position “display unit_center” and “traveling direction_right”. Here, the duplication position calculation procedure includes offset information in a direction (minus in the X-axis direction) opposite to the traveling direction (that is, the moving direction of the presenter P).

  Thereby, the duplication position determination unit 22 can determine the duplication position at a position opposite to the moving direction of the presenter P and sufficiently away from the original data.

  As described above, the electronic blackboard 1 can predict the moving direction of the presenter P and display the duplicate data on the opposite side even when the character input is started from the vicinity of the center of the display unit 13. As a result, it is possible to improve the visibility of attention information for the viewer.

[Modification 3—Duplicate Position Determination]
When the original data specified by the copy target specifying unit 21 is copied, if the original data is placed at the copy position determined by the copy position determining unit 22, it is assumed that the original data does not fit within the screen of the display unit 13.

  FIG. 11 is a diagram illustrating another example of the coordinate system of the display unit 13 referred to by the duplication position determination unit 22.

  Referring to FIG. 11, for example, when the display position of the original data is the reference point 54, if the replication position is determined as the reference point 54 ', the replication data cannot be displayed on the screen. In such a case, the replication position determination unit 22 determines that it is impossible to display the replication data at the previously determined replication position (reference point 54 '). Then, the duplication position determination unit 22 searches for a position where the duplicate data can be displayed from the side opposite to the display position of the original data (reference point 54) (here, the right half), and creates a new duplication position (reference point). 54 ″) is determined. The method for determining the second replication position is not particularly limited. For example, among the displayable positions, below the first replication position (reference point 54 ′). The closest replication position may be determined, or the farthest replication position may be determined below the display position of the original data (reference point 54).

  As described above, even if the electronic blackboard 1 cannot be stored in the screen at the previously determined duplication position, it can find another duplication position that can be displayed without missing the contents of the original data. In addition, the duplicated data can be displayed without being reduced. As a result, it is possible to maintain visibility of the attention information while maintaining an easy-to-view state for the viewer.

  Note that the configuration in which the duplication position determination unit 22 corrects the duplication position by shifting as described above may be provided instead of the configuration of the duplication size adjustment unit 23, or may be provided in combination with the configuration of the duplication size adjustment unit 23. May be. For example, the copy position determination unit 22 may correct the copy position when the copy size adjustment unit 23 has reduced the image to the allowable range but does not fit within the screen. Alternatively, when the optimum displayable position of the duplicate data is not found, the duplicate size adjustment unit 23 may be configured to reduce the duplicate data.

[Modification 4-Division of replicated data]
The control unit 10 of the electronic blackboard 1 may include a duplication target dividing unit 24. As described above, the duplication target dividing unit 24 can divide one original data (duplicated data) into a plurality of elements and determine the arrangement for each element. Therefore, only the shape of the duplicate data can be changed from the original data without missing the contents of the original data, and the degree of freedom of arrangement of the duplicate data can be improved.

  FIG. 12 is a diagram illustrating another example of the coordinate system of the display unit 13 referred to by the duplication position determination unit 22.

Referring to FIG. 12, for example, it is assumed that the user inputs a character string from the position of the reference point 55 followed by the character string “Text editing area ...”. The character string entered in this way is

Text editing
area ...

And is identified as original data by the duplication target specifying unit 21.

  The duplication position determination unit 22 determines the display position of the duplication data of the original data as the position of the reference point 55 ′ by the method described so far. Here, if the duplicate data having the above shape is displayed at the position of the reference point 55 ′ while maintaining this shape, the duplicate position determination unit 22 determines that the duplicate data does not fit within the screen of the display unit 13. .

  In this case, the duplication target dividing unit 24 analyzes the original data and divides the duplication data into a plurality of elements. Then, it is possible to change the shape of the duplicate data so as to fit within the screen at the position of the reference point 55 ′ without missing the content of the original data.

  In this example, as an example, the duplication target dividing unit 24 can divide a character string into words (elements). That is, the duplication target dividing unit 24 divides the original data into four elements “Text”, “editing”, “area”, and “...”.

Then, the duplication target dividing unit 24 considers the position of the reference point 55 ′ in the coordinate system of the display unit 13 and the size of each element, and changes the shape of the duplication data so that the duplication data fits in the screen.

Text
editing
area ...

Change to

  The duplicate data whose shape has been changed by the duplication target dividing unit 24 is displayed so as not to protrude from the screen of the display unit 13 at the reference point 55 'as shown in FIG. Here, although the shape of the duplicate data has been changed, the duplicate data is displayed in a state that is easy for the viewer to view without missing the contents of the original data and without reducing the size of the original data. As a result, it is possible to maintain visibility of the attention information while maintaining an easy-to-view state for the viewer.

  The configuration of the duplication target dividing unit 24 may be provided in place of the configuration of shifting the duplication position of the duplication position determining unit 22 and the configuration of the duplication size adjusting unit 23, or the above described duplication position determining unit 22. It may be provided in combination with the configuration or the configuration of the replica size adjusting unit 23. For example, even when the shape is changed by being divided by the duplication target dividing unit 24, the copy size adjusting unit 23 may reduce the size of the divided duplicated data even if it does not fit within the screen. I do not care. Alternatively, when the copy size adjustment unit 23 reduces the copy position to an allowable range and the copy position determination unit 22 corrects the copy position but does not fit within the screen, the copy target dividing unit 24 sets the copy data. Division may be performed.

  The replication target dividing unit 24 has a function of performing morphological analysis of the language used, and replicated data according to the language used, the direction of input characters, the direction of character strings (vertical writing or horizontal writing), and the like. Is divided into each element, and the shape is changed. That is, the duplication target dividing unit 24 can disassemble the duplicated data and rearrange the elements in consideration of the original meaning of the original data not being lost.

[Modification 5-Decoration of replicated data]
The process executed by the data processing unit 25 on the input copy data of the original data may include a process of decorating the copy data. The data processing unit 25 may decorate or edit the replicated data in advance according to the setting information related to decoration stored in the setting storage unit 30 in advance. The setting information related to decoration is hereinafter referred to as decoration setting information.

  FIG. 13 is a diagram illustrating a data structure of the decoration setting information stored in the setting storage unit 30 and a specific example.

  The decoration setting information includes a decoration item column that specifically defines the decoration contents, and a setting column that stores a flag indicating whether the decoration contents are actually applied to the replicated data. The user can select and set only a desired decoration item by operating the operation unit 12.

In the example shown in FIG. 13, as an example, the following decoration item (1) adding a subtitle-like background to the duplicate data,
(2) Bold foreground (for example, imaged handwritten input characters)
(3) When overlaying an object that is already displayed, make the background translucent, and
(4) In the case where the object is already displayed on top of the displayed object, a flag indicating that the decoration is used is set against inverting the colors of the background and the foreground.

  Therefore, the data processing unit 25 completes the replicated data by performing the above four decorations after replicating the replicated data from the original data.

  FIGS. 14A and 14B are diagrams illustrating a specific example when the duplicate data with decoration is displayed on the display unit 13.

  In the example shown in FIG. 14A, the data processing unit 25 duplicates the original data 56, adds a balloon-type background based on the decoration setting information, and duplicates the foreground (handwritten characters) in bold. Data 56 'is generated.

  The example shown in FIG. 14B is another example of duplicate data decorated by the data processing unit 25. The data processing unit 25 adds a caption-like background to the duplicate data according to the decoration setting information. Further, the data processing unit 25 determines that when the duplicate data is arranged at the position determined by the duplicate position determining unit 22, the data processing unit 25 overlaps the already-existing object in the lower layer. In this case, the data processing unit 25 executes a process for making the subtitle-like background translucent and a process for inverting the foreground color and the background color for the duplicate data, and finally the duplicate data 56 Is generated.

[Modification 6: Editing, Hiding, Locking of Replicated Data]
In addition, the data processing unit 25 may execute processing on the already-existing duplicated data in accordance with a user operation performed on the original data or the duplicated data displayed on the display unit 13. For example, the data processing unit 25 similarly performs editing (or decoration, non-display) processing on the duplicate data in accordance with an editing (or decoration, non-display) operation performed on the original data. Also good. Alternatively, the data processing unit 25 may execute editing (or decoration, non-display) processing on the replicated data in accordance with an editing (or decoration, non-display) operation directly performed on the replicated data. . Alternatively, the data processing unit 25 may execute the process of setting or releasing the lock on the replicated data according to the operation of setting or releasing the lock made on the replicated data. Here, the lock setting refers to a process for protecting the copy data from being edited (or decorated or hidden), and the unlocking means editing (or decorated or hidden). ) Indicates a process for canceling the setting so that the process is permitted.

  The data processing unit 25 is configured to store and manage each data in the data storage unit 31 in order to process the already-existing original data and the already-existing duplicated data corresponding thereto.

  FIG. 15 is a diagram illustrating a data structure and a specific example of a data table stored in the data storage unit 31.

  When the data processing unit 25 generates and arranges the original data and the duplicated data in accordance with the user's operation, the data processing unit 25 outputs them to the display control unit 26 for rendering on the display unit 13 and also the data storage unit 31. Stored in the data table.

  The data table is characterized in that the visualized image of the original data and the visualized image of the duplicate data are stored in association with each other. Further, as shown in FIG. 15, in the data table, the arrangement information, that is, the coordinates of the reference point of the original (and duplicate) data and the display size of the original (and duplicate) data are stored in association with each data. The In order to prepare management, a management number may be given to a pair of original data and corresponding duplicate data.

  In addition, when the data processing unit 25 is configured to automatically hide the duplicated data after a certain period of time, a column for managing the display period of the duplicated data is provided in the data table. Also good. Further, when the data processing unit 25 has a function of locking the editing, decoration, and non-display of the replicated data, a lock column for storing a flag indicating whether or not the lock is set includes a data column. It may be provided on the table.

  FIG. 16 is a flowchart showing a flow of processing executed by the data processing unit 25 for the already-existing data.

  The display control unit 26 displays the original data and the duplicate data on the display unit 13. Here, it is assumed that the user's touch operation is performed on any data.

  When the coordinate information output unit 20 receives the touch operation, the coordinate information output unit 20 outputs the coordinate information to each unit. Here, the data processing unit 25 determines that the touch operation has been the original data or the duplicated data already displayed on the display unit 13. When determining that the original data has been operated (A in S300), the data processing unit 25 processes the original data in accordance with the touch operation (S302). Here, the process performed by the data processing unit 25 may be a process of erasing original data (that is, non-display) or a process of adding decoration.

  Further, the data processing unit 25 refers to the data storage unit 31 and determines whether or not a lock is set on the duplicate data corresponding to the operated original data (S304).

  If the data processing unit 25 determines that the copy data is locked (YES in S304), the data processing unit 25 ends the series of processes without executing the same process as the process in S302 on the copy data. . On the other hand, if it is determined that the duplicated data is not locked (NO in S304), the same process as the process in S302 is executed (S306). For example, when the user inputs an operation for deleting the original data, the data processing unit 25 hides the original data and also hides the corresponding duplicate data. Alternatively, when the character color of the original data is changed to red in S302, the data processing unit 25 similarly changes the character color of the duplicate data to red. In this way, the operation performed on the original data is also reflected in the duplicate data.

  On the other hand, when it is determined that the duplicate data has been operated (B in S300), the data processing unit 25 processes the duplicate data according to the touch operation. If the replicated data is not locked (NO in S308), the data processing unit 25 processes the replicated data according to the touch operation (S310). Here, the process performed by the data processing unit 25 may be a process of deleting (that is, hiding) the replicated data, a process of adding decorations, or locking the replicated data. Or a process of moving the display position of the replicated data.

  On the other hand, when the replicated data is locked (YES in S308), the data processing unit 25 ends the series of processes without executing the process instructed by the touch operation. If the instruction based on the touch operation received in S300 is an instruction to release the lock set in the duplicate data (YES in S312), the data processing unit 25 is set to the duplicate data. A process for releasing the lock is executed (S314).

[Variation 7-Identification of replication target]
In the above-described embodiment, the duplication target specifying unit 21 is configured to specify data to be duplicated based on the touch position on the operation unit 12 of the user. That is, based on the touch position, the copy target specifying unit 21 specifies data that the presenter refers to at the time of presentation and data that is hidden behind the presenter and displayed at a position that cannot be seen by the viewer. It was a configuration.

  In addition to the above configuration, the duplication target specifying unit 21 uses other methods to refer to data that the presenter refers to at the time of presentation, or data that is hidden behind the presenter and is not visible to the viewer Can be specified.

  For example, the electronic blackboard 1 may include a camera. Alternatively, the electronic blackboard 1 may include a communication unit that communicates with a camera provided outside. In any case, the camera is installed so as to photograph the positional relationship between the display unit 13 of the electronic blackboard 1 and the user (presenter). The duplication target specifying unit 21 analyzes the image captured by the camera, grasps the content displayed on the display unit 13 and the positional relationship with the user, and hides behind the presenter from the viewer. Data displayed at an invisible position can be specified as original data to be duplicated. Alternatively, instead of the camera, the electronic blackboard 1 may include a human sensor using infrared rays, ultrasonic waves, visible light, or the like. The duplication target specifying unit 21 grasps the position of the user in front of the display unit 13 based on the signal output from the human sensor, and is displayed in a position hidden from the presenter and hidden from the viewer. Identify the data.

  Alternatively, the electronic blackboard 1 may include a voice recognition unit. The speech recognition unit recognizes speech uttered by the presenter. The duplication target specifying unit 21 analyzes the relevance between the recognized voice content and the data displayed on the display unit 13. Then, the copy target specifying unit 21 can specify data that is referred to by the presenter and has a high degree of attention for the viewer as original data to be copied.

  Note that the operation unit 12 may accept a touch operation for the user himself / herself to specify data to be copied. When data is designated by a touch operation, the duplication target specifying unit 21 specifies the designated data as original data to be duplicated.

[Example of software implementation]
Finally, each block of the electronic blackboard (display device) 1, in particular, the coordinate information output unit 20, the copy target specifying unit 21, the copy position determining unit 22, the copy size adjusting unit 23, the copy target dividing unit 24, and the data processing unit 25. The display control unit 26 may be realized by hardware using a logic circuit formed on an integrated circuit (IC chip), or may be realized by software using a CPU (Central Processing Unit). Good.

  In the latter case, the electronic blackboard 1 includes a CPU that executes instructions of a program that realizes each function, a ROM (Read Only Memory) that stores the program, a RAM (Random Access Memory) that expands the program, the program, and various types of programs. A storage device (recording medium) such as a memory for storing data is provided. An object of the present invention is to provide a recording medium in which a program code (execution format program, intermediate code program, source program) of a control program of the electronic blackboard 1 which is software that realizes the above-described functions is recorded in a computer-readable manner, This can also be achieved by supplying the electronic blackboard 1 and reading and executing the program code recorded on the recording medium by the computer (or CPU or MPU).

  Examples of the recording medium include non-transitory tangible medium, such as magnetic tape and cassette tape, magnetic disk such as floppy (registered trademark) disk / hard disk, and CD-ROM / MO. Discs including optical discs such as / MD / DVD / CD-R, cards such as IC cards (including memory cards) / optical cards, semiconductor memories such as mask ROM / EPROM / EEPROM (registered trademark) / flash ROM Alternatively, logic circuits such as PLD (Programmable Logic Device) and FPGA (Field Programmable Gate Array) can be used.

  The electronic blackboard 1 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network. The communication network is not particularly limited as long as it can transmit the program code. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication network, and the like can be used. The transmission medium constituting the communication network may be any medium that can transmit the program code, and is not limited to a specific configuration or type. For example, even with wired lines such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line, infrared rays such as IrDA and remote control, Bluetooth (registered trademark), IEEE 802.11 wireless, HDR ( It can also be used by radio such as High Data Rate (NFC), Near Field Communication (NFC), Digital Living Network Alliance (DLNA), mobile phone network, satellite line, and digital terrestrial network. The present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

[Example of implementation by software-supplement]
In addition, the system or display device described here refers to a logical collection of a plurality of devices (or functional modules that realize a specific function), and each device or each functional module is a single unit. It does not matter whether it is in the housing or not.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. That is, embodiments obtained by combining technical means appropriately modified within the scope of the claims are also included in the technical scope of the present invention.

  The present invention can be applied to a display device including a touch panel. In particular, the display device of the present invention can be effectively used in a usage mode in which there are users (such as presenters) who operate the touch panel and viewers who browse the touch panel. Furthermore, if the present invention is applied to a display device having a touch panel having a relatively large screen, it is possible to obtain a particularly great effect that a viewer can view information on the display device regardless of the position of the presenter. It is possible.

1 Electronic blackboard (display device)
10 control unit 11 storage unit 12 operation unit (touch panel)
13 Display unit (touch panel)
20 Coordinate information output unit 21 Replication target specifying unit (Replication target specifying means)
22 Duplicate position determining unit (Duplicate position determining means)
23 Duplicate Size Adjuster (Duplicate Size Adjuster)
24 Duplication target division unit (duplication target division means)
25 Data processing unit (data processing means)
26 Display control unit (display control means)
30 Setting storage unit 31 Data storage unit

Claims (12)

Based on the user's touch operation on the touch panel, a replication target specifying means for specifying replication target data to be replicated;
A replication position determining means for determining a replication position for displaying a replication of the replication target data;
Data processing means for replicating the replication target data specified by the replication target specifying means to generate replication data and displaying it at the replication position determined by the replication position determination means,
The replication position determining means includes
A display device, wherein a position that is a predetermined distance away from a position on the touch panel where the replication target data is displayed is determined as a replication position. The replication position determining means includes
The display device according to claim 1, wherein the duplication position is determined on a region on the opposite side of the left-right direction of the touch panel where the duplication target data is displayed. The replication position determining means includes
The display device according to claim 2, wherein the replication position is determined on a region above the position on the touch panel where the replication target data is displayed. The replication target specifying means is:
Based on the position of the touch operation, the data input by the touch operation and displayed on the touch panel, or the data selected by the touch operation among the data displayed on the touch panel is used as replication target data. The display device according to claim 1, wherein the display device is specified.   A copy size adjusting means for reducing the display size of the copy data that can not be displayed in the touch panel when placed at the determined copy position, so that the display size of the copy data fits in the touch panel. The display device according to claim 1, wherein the display device is a display device. The replica size adjusting means further includes:
6. The display size of the duplicate data is enlarged within a range that fits within the touch panel with respect to the duplicate data generated with a size smaller than a predetermined size with respect to the size of the touch panel. The display device described.   The duplicated data that cannot be displayed in the touch panel when arranged at the determined duplication position is divided into a plurality of elements, and the elements are rearranged so that the shape of the duplicated data fits in the touch panel. The display device according to claim 1, further comprising: a replication target dividing unit that changes the data. A data storage unit that stores the replication target data and the replication data of the replication target data generated by the data processing unit in association with each other;
The data processing means is
When a touch operation instructing to hide the replication target data is received, the replication target data is hidden and the replication associated with the replication target data is performed in the data storage unit. The display device according to claim 1, wherein the data is not displayed. The data storage unit stores, for each replicated data, information indicating whether to lock the process of the replicated data,
9. The display device according to claim 8, wherein the data processing means hides the duplicate data when the lock is not set for the duplicate data in the data storage unit. A method for displaying data in a display device having a touch panel,
Based on the user's touch operation on the touch panel, a replication target specifying step for specifying replication target data to be replicated;
A replication position determining step for determining a replication position for displaying a copy of the replication target data;
Including a data processing step of generating replication data by duplicating the replication target data identified in the replication target identification step, and displaying it at the replication position determined in the replication position determination step;
In the duplication position determination step,
A display method, comprising: determining a position on the touch panel at a predetermined distance from a position where the replication target data is displayed as a replication position.   The control program for functioning a computer as each means of the display apparatus of any one of Claim 1-9.   The computer-readable recording medium which recorded the control program of Claim 11.

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