JP2012173997A - Display device, display method and display program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of improving operability in the display device.SOLUTION: A display device 1 comprises: a display 10 that displays a plurality of selected areas; a detector 13a that detects a projection position of a user's fingertip on the display surface along a direction substantially orthogonal to the display surface if the user's fingertip is projected onto the display; and a display control part 13b that controls the display 10, if the projection position of the fingertip is within a defined region set for each selected area on the display surface, to enlarge and display a selected area corresponding to the defined region regarding a substantial center position of the selected area as a reference position, and if the projection position of the fingertip is outside the defined region and within an undefined region set for each combination of plurality of selected areas adjacent to each other, to enlarge and display part or all of a combination of selected areas corresponding to the undefined area in a direction away from other selected areas in the combination.

Description

  The present invention relates to a display device, a display method, and a display program.

  2. Description of the Related Art Conventionally, in a display device used for various in-vehicle devices such as car navigation and car audio, a touch panel for receiving an operation input to these in-vehicle devices is used. This touch panel is provided in front of a display that displays various display screens. Among the operation areas set on this touch panel, operation areas corresponding to operation buttons displayed as part of the display screen of the display When is pressed, an operation input is accepted.

  As a display device using such a touch panel, for example, when an operator selects any of the characters in the symbol input unit on which 50-sound characters are displayed, only the selected characters are enlarged to input symbols. An in-vehicle information input display device has been proposed in which erroneous input can be prevented even when the size and interval of the touch switch indicating each character in the symbol input unit is small by being displayed superimposed on the unit (for example, , See Patent Document 1).

Japanese Patent Laid-Open No. 7-229751

By the way, when the touch panel is a projected capacitive touch panel, the distance from each sensor electrode to the user's fingertip approaching the touch panel can be determined by detecting the capacitance of each sensor electrode constituting the touch panel. Can be calculated. Therefore, in the conventional apparatus as described above, when a projected capacitive touch panel is used, when the operator's finger approaches one of the characters displayed on the display, the character is enlarged and displayed. Is also possible.

  However, in the conventional apparatus as described above, when a projected capacitive touch panel is used, there is a possibility that characters contrary to the user's intention may be enlarged and the user may make an input error. was there.

  FIG. 9 is a front view illustrating the conventional apparatus as described above. For example, as shown in FIG. 9, the position 20 where the approach of the user's finger is detected (the position of the white circle in FIG. 9) is the two character buttons 2 “sa” and “shi” displayed on the display. Since it is unclear which of the character buttons 2 should be enlarged when the area is in between, when any one of the character buttons 2 is enlarged, the character button 2 contrary to the user's intention is enlarged and displayed. There was a possibility.

  10 and 11 are enlarged views in the vicinity of the character buttons 2 “sa” and “shi” in FIG. For example, as shown in FIG. 10A, the position 20 (the position of the white circle in FIG. 10A) where the approach of the user's finger is detected is between the character buttons 2 “sa” and “shi”. 10 (b), the character button 2 “shi” that is closer to the position 20 (the position of the white circle in FIG. 10 (b)) where the approach of the user's finger is detected, as shown in FIG. It can be considered that the center position of the character button 2 “shi” is enlarged and displayed as a reference position. However, the user intends to select the other character button 2 “sa”, and at the position 21 where the character button 2 “sa” is displayed (the position of the black circle in FIG. 10B). When the touch panel is touched, the enlarged character button 2 “shi” is displayed over the character button 2 “sa”, so that the user unintentionally enlarged the character button 2 “shi”. ”Could be pushed.

  Further, as shown in FIG. 10A, the position 20 (the position of the white circle in FIG. 10A) where the approach of the user's finger is detected is between the character buttons 2 “sa” and “shi”. 11, both the character buttons 2 “sa” and “shi” are closer to the position 20 (the position of the white circle in FIG. 11) where the approach of the user's finger is detected, as shown in FIG. 11. It can be considered that the center position of the character button 2 “shi” is enlarged and displayed as a reference position. However, the user intends to select the other character button 2 “sa”, and touches the touch panel at the position 21 (the position of the black circle in FIG. 11) where the character button 2 “sa” is displayed. In this case, since the enlarged character button 2 “shi” is enlarged to the contact position, the user may unintentionally press the enlarged character button 2 “shi”. . As described above, the conventional apparatus has room for further improvement in operability.

  The present invention has been made in view of the above, and an object thereof is to provide a display device, a display method, and a display program capable of improving the operability of the display device.

  In order to solve the above-described problems and achieve the object, the display device according to claim 1 is used along a direction substantially orthogonal to a display surface of the display unit and a display unit that displays a plurality of selection areas. A detection means for detecting a projection position of the fingertip on the display surface when the fingertip of the person is projected on the display surface, and a projection position of the fingertip detected by the detection means on the display surface. If it is within the fixed region set for each selected region, the selected region corresponding to the fixed region is enlarged and displayed with the approximate center position of the selected region as a reference position, and the fingertip detected by the detecting means If the projected position is an area other than the fixed area and is within an undefined area set for each combination of a plurality of selection areas adjacent to each other, the combination corresponding to the undefined area is selected. A part or all of the regions, so as to cause a larger view in a direction away from each other from other selected areas of the combination, and a display control means for controlling said display means.

  The display device according to claim 2 is the display device according to claim 1, wherein the selection region is a quadrangle, and the display control unit has a projection position of the fingertip detected by the detection unit, If it is within the uncertain area, a part or all of the selection area of the combination corresponding to the uncertain area is enlarged and displayed while fixing the display position of the side adjacent to the other selection area of the combination. Thus, the display means is controlled.

  According to a third aspect of the present invention, there is provided a display method for displaying a plurality of selection areas on a display unit, and projecting a user's fingertip onto the display surface along a direction substantially orthogonal to the display surface of the display unit. In this case, the detection step of detecting the projection position of the fingertip on the display surface, and the determined region where the projection position of the fingertip detected in the detection step is set for each of the selection regions on the display surface The selected region corresponding to the determined region is enlarged and displayed with the approximate center position of the selected region as a reference position, and the projection position of the fingertip detected in the detecting step is other than the determined region. In the uncertain area set for each combination of a plurality of selection areas adjacent to each other, part or all of the selection areas of the combination corresponding to the uncertain area , As to enlarge in a direction away from each other from other selected areas of the combination, including a display control step of controlling the display means.

  A display program according to claim 4 causes a computer to execute the method according to claim 3.

  According to the display device according to claim 1, the display method according to claim 3, and the display program according to claim 4, the display control means is configured such that the projected position of the fingertip detected by the detection means is the display surface. If the selected region corresponds to the selected region, the selected region corresponding to the determined region is enlarged and displayed with the approximate center position of the selected region as a reference position, and the fingertip detected by the detecting unit is displayed. When the projection position is an area other than the fixed area and is within the undefined area set for each combination of a plurality of selection areas adjacent to each other, the combination of the selected areas corresponding to the undefined area Since the display means is controlled so that a part or the whole is enlarged and displayed in a direction away from the other selection areas of the combination, the selection area that the user intends to select is displayed. To have a position, you can avoid being displayed over different selected regions intention of the user, thereby improving the operability of the display device.

  In addition, according to the display device of the second aspect, the selection area is a quadrangle, and the display control means determines that if the projection position of the fingertip detected by the detection means is within the uncertain area, Since the display means is controlled so that a part or all of the selection area of the combination corresponding to the fixed area is enlarged and displayed while fixing the display position of the side adjacent to the other selection area of the combination, the user can It is possible to reliably avoid the display of a selection area different from the user's intention at the position where the selection area intended to be selected is displayed, thereby further improving the operability of the display device. be able to.

1 is a block diagram illustrating a display device according to an embodiment. It is the table | surface which illustrated the information stored in the area | region determination table. FIG. 3 is a diagram illustrating a display when display control processing is executed, and FIG. 3A is a side sectional view schematically showing a positional relationship between a display surface of the display and a user's fingertip, and FIG. ) Is a front view illustrating a display for displaying a 50-sound input screen. It is a flowchart of a display control process. FIG. 5A is an enlarged view illustrating two character buttons in a combination corresponding to an indeterminate region including the projection position of the fingertip, and FIG. 5A is a diagram illustrating a state before the character buttons are enlarged and FIG. FIG. 4 is a diagram showing a state after a character button is enlarged and displayed. It is the enlarged view which illustrated two character buttons of the combination corresponding to the indefinite area | region containing the projection position of a fingertip. It is the enlarged view which illustrated four character buttons of the combination corresponding to the uncertain region containing the projection position of a fingertip. Among these, FIG. 7A is a diagram showing a state before the character button is enlarged and FIG. 7B is a diagram showing a state after the character button is enlarged. FIG. 8A is an enlarged view illustrating a character button corresponding to a fixed region including a projected position of a fingertip, FIG. 8A is a diagram illustrating a state before the character button is enlarged, and FIG. It is a figure which shows the state after making it display. It is the front view which illustrated the conventional device. FIG. 10 is an enlarged view in the vicinity of the character buttons “sa” and “shi” in FIG. 9. FIG. 10 is an enlarged view in the vicinity of the character buttons “sa” and “shi” in FIG. 9.

  Hereinafter, embodiments of a display device, a display method, and a display program according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited by this embodiment. The display device, the display method, and the display program according to the present invention can be used for any purpose, but in the following embodiments, examples applied to a car navigation system are shown.

(Constitution)
First, the configuration of the display device according to the embodiment will be described. FIG. 1 is a block diagram illustrating a display device according to this embodiment. As shown in FIG. 1, the display device 1 includes a display 10, a touch panel 11, a proximity sensor 12, a control unit 13, and a data recording unit 14.

(Configuration-Display)
The display 10 is a display unit that displays various images including a plurality of selection areas based on the control of the control unit 13. Here, the “selection area” is an area in which an image to be selected by the user is displayed. Hereinafter, a case where a square character button indicating each character is displayed as a selection area when a 50 sound input screen is displayed on the display 10 will be described as an example. The “users” include all persons who use the display device 1, but when the display device 1 is applied to a car navigation system, they are a driver and a passenger of the vehicle. Hereinafter, among the driver and the passenger, a person who is operating the display device 1 at that time is referred to as a “user”. The specific configuration of the display 10 is arbitrary, and a known flat panel display such as a liquid crystal display or an organic EL display can be used.

(Configuration-touch panel)
The touch panel 11 is an input unit that receives an operation input when pressed by a user's finger or the like. The touch panel 11 is formed to be transparent or translucent, and is provided on the front surface of the display 10 so as to overlap the display surface of the display 10. In the present embodiment, the touch panel 11 receives an operation input for selecting the character button by being pressed at the position of the character button displayed on the display 10. As the touch panel 11, for example, a publicly known touch panel provided with operation position detecting means by a resistance film method or a capacitance method can be used.

(Configuration-Proximity sensor)
The proximity sensor 12 is a detection unit that detects a projected position of the fingertip on the display surface when the user's fingertip is projected onto the display surface along a direction substantially orthogonal to the display surface of the display 10. Here, the “display surface of the display 10” means, for example, the surface of the display 10 or the surface of the touch panel 11. As the proximity sensor 12, for example, an infrared sensor, a capacitance sensor, a camera, or the like can be used.

  In particular, when the touch panel 11 is a projection capacitive touch panel, the touch panel 11 can be used as the proximity sensor 12. In this case, the touch panel 11 detects the capacitance of each sensor electrode constituting the touch panel 11 and outputs it to the control unit 13. Hereinafter, a case where the projected capacitive touch panel 11 is used as the proximity sensor 12 will be described as an example.

(Configuration-control unit)
The control unit 13 is a control unit for controlling each unit of the display device 1. Specifically, the control unit 13 is a CPU, various programs that are interpreted and executed on the CPU (basic control programs such as an OS, and the OS. And a computer configured to include an internal memory such as a RAM for storing programs and various data. In particular, the display program according to the present embodiment is substantially installed in the display device 1 via an arbitrary recording medium or network, thereby substantially configuring each unit of the control unit 13.

  The control unit 13 includes a detection unit 13a and a display control unit 13b in terms of functional concept. Based on the output from the proximity sensor 12, the detection unit 13a projects the fingertip on the display surface when the user's fingertip is projected on the display surface along a direction substantially orthogonal to the display surface of the display 10. It is a detection means which detects a position. The display control unit 13b is a display control unit that controls the display 10 so as to enlarge and display a predetermined selection area. Details of processing executed by each unit of the control unit 13 will be described later.

(Configuration-Data recording part)
The data recording unit 14 is a recording unit that records a program and various data necessary for the operation of the display device 1, and is configured using a magnetic recording medium such as a hard disk (not shown) as an external storage device, for example. ing. However, any other recording medium including a semiconductor storage medium such as a flash memory or an optical recording medium such as a DVD or a Blu-ray disk can be used instead of or together with the hard disk.

  The data recording unit 14 includes an area determination table 14a. The area determination table 14 a is an area information storage unit that stores area information for specifying whether the position on the display surface of the display 10 belongs to a fixed area or an indeterminate area. Here, the “determined area” is an area in which, when the projection position of the fingertip on the display surface of the display 10 is detected by the detection unit 13a, a character button to be enlarged and displayed can be determined based on the projected position. This is an area set for each character button on the display surface. The “indeterminate area” is an area other than the established area, and when the projection position of the fingertip on the display surface of the display 10 is detected by the detection unit 13a, an enlarged display is performed based on the projected position. It is an area that is set for each combination of a plurality of character buttons adjacent to each other as an area where it is difficult to determine a character button to be used. For example, a range from the outer periphery of each character button to the outside of the predetermined distance is set as an indeterminate area, and a portion that is not an indeterminate area in the outer periphery of each character button is set as an established area. Is set.

  FIG. 2 is a table illustrating information stored in the area determination table 14a. As shown in FIG. 2, information corresponding to items “area number”, “X coordinate”, “Y coordinate”, “area”, and “corresponding character button” are associated with each other in the area determination table 14a. Stored. Among these, the information stored corresponding to the item “area number” is identification information for uniquely identifying each confirmed area and each uncertain area (such as “1” in FIG. 2). The information stored corresponding to the items “X coordinate” and “Y coordinate” is information for specifying the range of each confirmed area and each uncertain area on the display surface of the display 10, for example, the display 10. (In FIG. 2, for example, in the region of region number “1”, the X coordinate is “10 or more and less than 30”, the Y coordinate is “10 or more and less than 30”, etc.) ). The information stored corresponding to the item “area” is a range specified based on the information stored corresponding to the items “X coordinate” and “Y coordinate”. This is information for identifying whether it is an area ("determined area" or "indeterminate area" in FIG. 2). The information stored corresponding to the item “corresponding character button” is information for specifying a character button corresponding to the confirmed area or a combination of character buttons corresponding to the uncertain area (in FIG. 2, for example, the area “Wa” for the definite region with the number “1”, “Wa” for the undetermined region with the region number “2”).

(processing)
Next, a display control process executed by the display device 1 configured as described above will be described. FIG. 3 is a diagram illustrating the display 10 when the display control process is executed. FIG. 3A is a side sectional view schematically showing the positional relationship between the display surface of the display 10 and the user's fingertip. FIG. 3B is a front view illustrating the display 10 displaying a 50 sound input screen. FIG. 4 is a flowchart of the display control process (in the following description of each process, step is abbreviated as “S”). This display control process is started when a plurality of selection areas are displayed on the display 10 and an operation input for selecting the selection area at the position of each selection area is accepted by the touch panel 11. In the present embodiment, as shown in FIG. 3B, a 50-sound input screen is displayed on the display 10, and an operation input for selecting the character button 10a at the position of each character button 10a is received by the touch panel 11. In this case, it is assumed that the display control process is started.

  As shown in FIG. 4, when the display control process is started, the detection unit 13a determines whether or not the approach of the user's fingertip is detected based on the output from the touch panel 11 as the proximity sensor 12 ( SA1). For example, as shown in FIG. 3A, when the fingertip enters the detection range of the fingertip by the touch panel 11 (for example, within a range of 20 cm from the surface of the touch panel 11), the static of each sensor electrode constituting the touch panel 11 is detected. When the capacitance changes, the detection unit 13a determines that the approach of the user's fingertip is detected based on the output of the touch panel 11 according to the change in the capacitance.

  Returning to FIG. 4, when the approach of the user's fingertip is not detected as a result of the determination of SA1 (SA1, No), the detection unit 13a repeats the process of SA1 until the approach of the user's fingertip is detected.

  On the other hand, when the approach of the user's fingertip is detected as a result of the determination of SA1 (SA1, Yes), the detection unit 13a is substantially omitted from the display surface of the display 10 based on the output from the touch panel 11 as the proximity sensor 12. When the fingertip of the user is projected onto the display surface along the orthogonal direction, the projection position of the fingertip on the display surface (hereinafter referred to as “fingertip projection position” if necessary) is detected (SA2). . For example, the detection unit 13a identifies the sensor electrode closest to the user's fingertip based on the capacitance of each sensor electrode constituting the touch panel 11 output from the touch panel 11 serving as the proximity sensor 12. The position where the sensor electrode is installed is detected as the projected position of the fingertip on the display surface (for example, the position 10b indicated by a white circle in FIG. 3).

  Returning to FIG. 4, the display control unit 13b refers to the region determination table 14a, and determines whether or not the projection position 10b of the fingertip detected by the detection unit 13a in SA2 is within the indeterminate region (SA3). That is, the display control unit 13b projects the fingertip projection position 10b detected by the detection unit 13a in SA2 among the information stored in the items "X coordinate" and "Y coordinate" of the area determination table 14a illustrated in FIG. It is determined whether or not the projection position 10b of the fingertip is within the indeterminate region based on the information stored in association with the item “region” in association with the information specifying the range including the coordinates indicating “”. For example, when the X coordinate indicating the projection position 10b of the fingertip detected by the detection unit 13a in SA2 is “21” and the Y coordinate is “45”, the detection is performed according to the area determination table 14a of FIG. The projected position 10b of the fingertip is determined to be within the indeterminate area of area number “2”. Further, when the X coordinate indicating the projected position 10b of the fingertip detected by the detection unit 13a in SA2 is “24” and the Y coordinate is “62”, the detection is performed according to the area determination table 14a of FIG. The projected position 10b of the fingertip is determined to be within the defined area of the area number “3” (that is, not within the indeterminate area).

  Returning to FIG. 4, when the projection position 10b of the fingertip detected by the detection unit 13a in SA2 is within the indeterminate region as a result of SA3 (SA3, Yes), the display control unit 13b refers to the region determination table 14a. Then, the combination character button 10a corresponding to the uncertain area is specified (SA4). For example, in the example of the area determination table 14a of FIG. 2, the X coordinate indicating the projected position 10b of the fingertip detected by the detection unit 13a in SA2 is “21”, the Y coordinate is “45”, and the detected fingertip When it is determined that the projected position 10b is within the indeterminate area having the area number “2”, “WA” and “O” are specified as the combination character buttons 10a corresponding to the indeterminate area.

  Returning to FIG. 4, the display control unit 13b displays the character button 10a specified by the display control unit 13b in SA4 in an enlarged manner while fixing the position of the side adjacent to the other character button 10a in the same combination. The display 10 is controlled (SA5). 5 and 6 are enlarged views exemplifying two character buttons 10a in a combination corresponding to the uncertain region including the projected position 10b of the fingertip. 5A is a diagram showing a state before the character button 10a is enlarged and FIG. 5B is a diagram showing a state after the character button 10a is enlarged. FIG. 6 is a diagram illustrating a state after the character button 10a is enlarged and displayed. 5 and 6, the projected position 10b of the fingertip detected by the detection unit 13a is represented by a white circle (the same applies to FIGS. 7 and 8 described later). In addition, among the regions separated by the alternate long and short dash line in FIG. 5A, the confirmed region 10c is represented by a hatched region, and the indeterminate region 10d is represented by a region that is not hatched (a diagram to be described later). The same applies to 7 (a) and FIG. 8 (a). In FIGS. 5B and 6, a square represented by a dotted line indicates the display position of each character button 10 a before being enlarged (see FIGS. 7B and 8B described later). The same applies to).

  In FIG. 5, it is determined in SA3 that the projected position 10b of the fingertip is in the indeterminate area 10d. In SA4, the character button 10a of the combination corresponding to the indeterminate area 10d is the character button 10a “sa” and the character button. The case where it is specified as 10a “shi” is illustrated. In this case, for example, as shown in FIG. 5B, the display control unit 13b selects the character button 10a “shi” that is close to the projection position 10b of the fingertip among the character button 10a “sa” and the character button 10a “shi”. Zoom in. At this time, the side adjacent to the other character button 10a “sa” in the same combination as the character button 10a “shi” (the upper side of the character button 10a “shi” in FIG. 5B) is substantially orthogonal to the side. While the display position in the direction is fixed, the character button 10a “shi” is enlarged and displayed. That is, as shown in FIG. 5B, the distance between the character button 10a “sa” and the character button 10a “shi” is kept constant before and after the enlarged display of the character button 10a “shi”. Thereby, for example, the user intends to select the character button 10a “sa”, and at the position 10e where the character button 10a “sa” is displayed (the position of the black circle in FIG. 5B). Even when the touch panel 11 is touched, the enlarged character button 10a “shi” is not displayed over the character button 10a “sa”, so that the user can enlarge the character button 10a. It is possible to avoid pushing “shi” against intention.

  Further, as shown in FIG. 6, the display control unit 13b expands both the character buttons 10a “sa” and the character buttons 10a “shi” of the combination corresponding to the indeterminate region 10d including the projected position 10b of the fingertip. You may make it display. In this case, the display control unit 13b closes the side of the character button 10a “sa” adjacent to the other character button 10a “shi” in the same combination as the character button 10a “sa” (in FIG. 6, the character button 10a “sa” The character button 10a “sa” is enlarged and displayed while fixing the display position in the direction substantially orthogonal to the side of “ Further, in the character button 10a “shi”, the side of the side adjacent to the other character button 10a “sa” in the same combination as the character button 10a “shi” (the upper side of the character button 10a “shi” in FIG. 6) While fixing the display position in a direction substantially orthogonal to the side, the character button 10a “shi” is enlarged and displayed. That is, as shown in FIG. 6, the distance between the character button 10a “sa” and the character button 10a “shi” is kept constant before and after the enlarged display of the character button 10a “sa” and the character button 10a “shi”. Be drunk. Thereby, for example, the user intends to select the character button 10a “sa”, and the touch panel 11 is displayed on the touch panel 11 at the position 10e where the character button 10a “sa” is displayed (the position of the black circle in FIG. 6). Even in the case of contact, since the enlarged character button 10a “shi” is not displayed on the character button 10a “sa”, the character button 10a “shi” enlarged by the user is displayed. Can be prevented from being pushed unintentionally.

  FIG. 7 is an enlarged view illustrating four character buttons 10a in a combination corresponding to the indeterminate region 10d including the projected position 10b of the fingertip. 7A shows a state before the enlarged display of the character button 10a, and FIG. 7B shows a state after the enlarged display of the character button 10a.

  In FIG. 7, it is determined in SA3 that the projected position 10b of the fingertip is in the indeterminate area 10d. In SA4, the character button 10a of the combination corresponding to the indeterminate area 10d is the character button 10a “ka”, the character button The case where it is specified that 10a “ki”, character button 10a “sa”, and character button 10a “shi” is illustrated. In this case, as shown in FIG. 7B, for example, the display control unit 13b displays the combination of the character buttons 10a “ka” and the character buttons 10a “ki” corresponding to the indeterminate region 10d including the projected position 10b of the fingertip. ”, The character button 10 a“ sa ”, and the character button 10 a“ shi ”are all enlarged and displayed. At this time, the display control unit 13b in the character button 10a “ka” has another character button 10a “ki”, character button 10a “sa”, and character button 10a “shi” in the same combination as the character button 10a “ka”. The character button 10a “ka” is displayed in an enlarged manner while fixing the display position of each side adjacent to “(in FIG. 7, the left side and the lower side of the character button 10a“ ka ”) in a direction substantially orthogonal to the side. . Similarly, for the character button 10a “ki”, the character button 10a “sa”, and the character button 10a “shi”, the direction of each side adjacent to the other character button 10a in the same combination is substantially orthogonal to the corresponding side. Each character button 10a is enlarged and displayed while fixing the display position at. That is, as shown in FIG. 7B, each character button 10a “ka”, character button 10a “ki”, character button 10a “sa”, and character button 10a “shi” of the combination corresponding to the indeterminate region 10d. Is kept constant before and after the enlarged display of each character button 10a. Thereby, for example, the user intends to select the character button 10a “ki”, and at the position 10e where the character button 10a “ki” is displayed (the position of the black circle in FIG. 7B). Even when touching the touch panel 11, the enlarged character button 10 a “ka”, the character button 10 a “sa”, and the character button 10 a “shi” are displayed over the character button 10 a “ki”. Therefore, it is possible to prevent the user from pressing the enlarged character button 10a “ka”, character button 10a “sa”, and character button 10a “shi” unintentionally.

  Returning to FIG. 4, when the projection position 10b of the fingertip detected by the detection unit 13a in SA2 is not within the indeterminate region 10d as a result of SA3 (SA3, No), the fingertip detected by the detection unit 13a in SA2 is returned. It is determined whether or not the projection position 10b is within the fixed area 10c (SA6).

  As a result, if the projected position 10b of the fingertip detected by the detection unit 13a in SA2 is not within the fixed region 10c (SA6, No), it is not particularly necessary to enlarge the character button 10a, and the control unit 13 The display control process ends.

  On the other hand, when the projected position 10b of the fingertip detected by the detection unit 13a in SA2 is within the fixed region 10c (SA6, Yes), the display control unit 13b refers to the region determination table 14a and corresponds to the fixed region 10c. The character button 10a to be specified is specified (SA7).

  Next, the display control unit 13b controls the display 10 so that the character button 10a specified by the display control unit 13b in SA7 is enlarged and displayed with the approximate center position of the character button 10a as a reference position (SA8). . FIG. 8 is an enlarged view illustrating the character button 10a corresponding to the fixed region 10c including the projected position 10b of the fingertip. 8A is a diagram showing a state before the character button 10a is enlarged and FIG. 8B is a diagram showing a state after the character button 10a is enlarged.

  FIG. 8 shows a case where it is determined in SA6 that the projected position 10b of the fingertip is within the fixed area 10c, and in SA7, the character button 10a corresponding to the fixed area 10c is specified as the character button 10a “shi”. Is illustrated. In this case, for example, as shown in FIG. 8B, the display control unit 13b enlarges and displays the approximate center position of the character button 10a “shi” as the reference position. In this case, since the user is highly likely to intend to select the character button 10a “shi” and the possibility of selecting the character button 10a “sa” is low, the enlarged character button 10a “ No problem occurs even if “SHI” is displayed over the character button 10a “SA”.

  Returning to FIG. 4, after the process of SA5 or 8, the display control unit 13b determines whether or not the touch panel 11 is pressed at a position where any one of the character buttons 10a is displayed (SA9). As a result, when the touch panel 11 is pressed at a position where any one of the character buttons 10a is displayed (SA9, Yes), the control unit inputs the character corresponding to the character button 10a via the touch panel 11. Accept (SA10). Thereafter, the control unit 13 returns to SA1.

  On the other hand, when the touch panel 11 is not pressed at any position where the character button 10a is displayed (SA9, No), the display control unit 13b indicates that the user's fingertip is separated from the display surface by a predetermined distance (for example, 20 cm) or more. It is determined whether or not (SA11). As a result, when the user's fingertip is not separated from the display surface by a predetermined distance or more (the fingertip is less than the predetermined distance from the display surface) (SA11, No), the control unit 13 returns to SA1. Thereafter, in SA9, it is determined that the touch panel 11 is not pressed at the position where any one of the character buttons 10a is displayed (SA9, No), and the user's fingertip is separated from the display surface by a predetermined distance or more in SA11. Until the determination is made (SA11, Yes), the processing from SA1 to SA11 is repeated.

  On the other hand, when the user's fingertip is away from the display surface by a predetermined distance or more (SA11, Yes), the display control unit 13b cancels the enlarged display of the character button 10a (that is, displays the enlarged enlarged character button 10a). The display 10 is controlled to return to the previous size (SA12). Thereafter, the control unit 13 ends the display control process.

(effect)
As described above, according to the embodiment, the display control unit 13b determines that the projected position 10b of the fingertip detected by the detection unit 13a is within the fixed region 10c set for each character button 10a on the display surface. The character button 10a corresponding to the determined area 10c is enlarged and displayed with the approximate center position of the character button 10a as a reference position, and the projected position 10b of the fingertip detected by the detecting unit 13a is an area other than the determined area 10c. In the case where it is within the uncertain area 10d set for each combination of a plurality of character buttons 10a adjacent to each other, part or all of the character buttons 10a of the combination corresponding to the uncertain area 10d are Since the display 10 is controlled so as to be enlarged and displayed in a direction away from the other character buttons 10a of the combination, the user can It is possible to avoid the display of the character button 10a different from the user's intention at the position where the character button 10a intended to be selected is displayed, and to improve the operability of the display device 1. be able to.

  Further, the character button 10a is a quadrangle, and the display control unit 13b determines that the combination corresponding to the uncertain region 10d when the projection position 10b of the fingertip detected by the detection unit 13a is within the uncertain region 10d. Since the display 10 is controlled so that a part or all of the character buttons 10a are enlarged and displayed while fixing the display positions of the sides adjacent to the other character buttons 10a in the combination, the user can select It is possible to reliably avoid displaying the character button 10a different from the user's intention at the position where the intended character button 10a is displayed, and to further improve the operability of the display device 1. Can do.

[Modifications to Embodiment]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention can be arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. Can do. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above contents, and may vary depending on the implementation environment and details of the configuration of the invention. May be solved, or only some of the effects described above may be achieved.

(About the detector)
In the above-described embodiment, the projected capacitive touch panel 11 is used as the proximity sensor 12, and the detection unit 13 a outputs the capacitance of each sensor electrode constituting the touch panel 11 output from the touch panel 11. In the above description, the projection position of the fingertip on the display surface when the user's fingertip is projected on the display surface along a direction substantially orthogonal to the display surface of the display 10 is described. The projection position of the fingertip on the display surface when the user's fingertip is projected onto the display surface along a direction substantially orthogonal to the display surface of the display 10 is detected using different principles and methods. May be. For example, when the touch panel 11 is a touch panel of a system (for example, a resistive film system) different from the projected capacitive system, the touch panel 11 cannot be used as the proximity sensor 12. Therefore, for example, a camera disposed around the touch panel 11 is used as the proximity sensor 12, image data in front of the touch panel 11 is acquired by the camera, and the position of the fingertip in the image data is determined by using a known image recognition technique. recognize. Thereby, the projection position of the fingertip on the display surface when the user's fingertip is projected onto the display surface along a direction substantially orthogonal to the display surface of the display 10 may be detected. Alternatively, the projected capacitive touch panel 11 and a camera may be combined and used as the proximity sensor 12.

(About display control processing)
In the above-described embodiment, in SA3 of FIG. 4, the display control unit 13b refers to the region determination table 14a, and whether or not the projection position 10b of the fingertip detected by the detection unit 13a in SA2 is within the indeterminate region 10d. However, the determination may be performed based on a different standard. For example, based on the distance between the projection position 10b of the fingertip detected by the detection unit 13a in SA2 and the outer periphery of each character button 10a, it is determined whether or not the projection position 10b of the fingertip is within the indeterminate region 10d. It may be. Specifically, the display control unit 13b, when there are a plurality of character buttons 10a whose distance from the projection position 10b of the fingertip detected by the detection unit 13a in SA2 is less than a predetermined distance, the projection position 10b of the fingertip Is determined to be within the indeterminate region 10d. In this case, the display control unit 13b sets a plurality of character buttons 10a whose distance from the projected position 10b of the fingertip is less than a predetermined distance as a combination of character buttons 10a corresponding to the uncertain region 10d. On the other hand, when there is only one character button 10a whose distance from the projected position 10b of the fingertip detected by the detection unit 13a in SA2 is less than a predetermined distance, the projected position 10b of the fingertip is within the fixed region 10c. Judge that there is. In this case, the display control unit 13b sets one character button 10a whose distance from the projection position 10b of the fingertip is less than a predetermined distance as the character button 10a corresponding to the determined area 10c.

  Further, the projection position 10b of the fingertip detected by the detection unit 13a in SA2 of FIG. 4 is in the indeterminate area 10d (SA3, Yes), and the projection position 10b of the fingertip is in the indeterminate area 10d. If it is not positioned on any character button 10a of the corresponding combination, all the character buttons 10a of the combination corresponding to the indeterminate region 10d are enlarged and displayed, and the projected position 10b of the fingertip is If it is positioned on the character button 10a, only the character button 10a may be enlarged and displayed.

DESCRIPTION OF SYMBOLS 1 Display apparatus 10 Display 2, 10a Character button 10b Projection position 10c Determination area 10d Uncertain area 10e Touch position of a fingertip 11 Touch panel 12 Proximity sensor 13 Control part 13a Detection part 13b Display control part 14 Data recording part 14a Area determination table 20 Finger Proximity detection position 21 Finger contact position

Claims (4)

Display means for displaying a plurality of selected areas;
Detecting means for detecting a projection position of the fingertip on the display surface when a user's fingertip is projected on the display surface along a direction substantially orthogonal to the display surface of the display means;
When the projected position of the fingertip detected by the detecting means is within a fixed area set for each of the selected areas on the display surface, a selection area corresponding to the determined area is an abbreviation of the selected area. The projection position of the fingertip detected by the detection means is enlarged with the center position as a reference position, and the projection position of the fingertip is an area other than the fixed area and is set for each combination of a plurality of selection areas adjacent to each other. If it is within the fixed region, the display means is configured to enlarge and display part or all of the selected region of the combination corresponding to the uncertain region in a direction away from the other selected region of the combination. Display control means for controlling;
A display device comprising: The selection area is a rectangle,
When the projection position of the fingertip detected by the detection unit is within the indeterminate region, the display control unit determines a part or all of the combination selection region corresponding to the indeterminate region. Controlling the display means to enlarge and display while fixing the display position of the side adjacent to the other selected region of the combination;
The display device according to claim 1. A display step of displaying a plurality of selection areas on the display means;
A detection step of detecting a projection position of the fingertip on the display surface when a user's fingertip is projected on the display surface along a direction substantially orthogonal to the display surface of the display means;
When the projection position of the fingertip detected in the detection step is within a fixed area set for each of the selected areas on the display surface, a selection area corresponding to the determined area is an abbreviation of the selected area. The projection position of the fingertip detected in the detection step is enlarged in a center position as a reference position, and the projection position of the fingertip is an area other than the fixed area and set for each combination of a plurality of selection areas adjacent to each other. If it is within the fixed region, the display means is configured to enlarge and display part or all of the selected region of the combination corresponding to the uncertain region in a direction away from the other selected region of the combination. Display control steps to control;
Display method including.   A display program for causing a computer to execute the method according to claim 3.

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