JP2010258603A - Communication terminal and method of adjusting display size - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication terminal capable of easily increasing or decreasing the display size of character information, etc., on a display screen of the communication terminal. <P>SOLUTION: The communication terminal 10 has the display screen 12a, and includes a display unit 12 configured to display various information on the display screen 12a, a distance measurement unit 17 configured to measure the distance H from the display screen 12a to a user M, a determination unit 15 configured to determine whether the distance H between the display screen 12a and user M increases or decreases by determining whether a current distance H<SB>n+1</SB>measured by the distance measurement unit 17 is larger than a last distance H<SB>n</SB>measured last, and a control unit 16 configured to increase or decrease the display size of the various information displayed on the display screen 12a by the display unit 12 based upon the increase or decrease in distance H determined by the determination unit 15. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a communication terminal for adjusting a display size and a display size adjusting method.

  Conventionally, as a means for adjusting the display size when displaying various character information, etc. on a communication terminal or the like, a technique for manually setting the display size to the optimum display size by key operation of the communication terminal is widely known. (For example, refer to Patent Document 1). In addition, as another means of adjusting the display size, a touch panel is provided on the display screen, the part of the display screen that has been pressed for a certain period of time is detected by the touch panel, and the display size is enlarged around that part. A technique for setting an optimal display size is known (for example, see Patent Document 2).

JP 2008-124754 A JP 2005-182367 A

  However, it is troublesome to enlarge or reduce the display size of character information on the display screen by the key operation described in Patent Document 1 or the pressing operation described in Patent Document 2 for a certain time or longer. It took a lot of trouble and was bothersome.

  Therefore, an object of the present invention is to provide a communication terminal and a display size adjustment method that can easily enlarge or reduce the display size of character information or the like on the display screen of the communication terminal.

  In order to solve the above-described problems, a communication terminal according to the present invention is a communication terminal having a display screen, and display means for displaying various information on the display screen, and increase / decrease in the distance between the display screen and the user. Or based on the determination means for determining the presence or absence of movement of the communication terminal and the increase or decrease of the distance determined by the determination means or the presence or absence of movement, the display size of the various information displayed on the display screen is enlarged or reduced by the display means Control means.

  In order to solve the above-mentioned problem, the display size adjustment method according to the present invention is a method of adjusting the display size of various information in a communication terminal including a display unit that displays various information on a display screen. A determination step for determining whether there is an increase / decrease in the distance between the display screen and the user or movement of the communication terminal, and display on the display screen by the display means based on the increase / decrease in the distance determined by the determination step or the presence / absence of the movement. And a control step for enlarging or reducing the display size of various types of information.

  According to this communication terminal or the adjustment method of the display size, when the display size of character information or the like is smaller than the preferred size, the user moves the display screen closer to the user. When the display size is larger than the preferred size, a natural movement such as the user moving the display screen away from the user is detected by determining the increase or decrease in the distance between the display screen and the user or the presence or absence of movement of the communication terminal. I am doing so. And according to such a natural movement of the user, the display size of various information displayed on the display screen by the display means is enlarged or reduced. For this reason, it is possible to easily enlarge or reduce the display size of character information or the like on the display screen of the communication terminal without performing a key operation or the like.

  Further, it further comprises a line-of-sight detection means for detecting a user's visual recognition location on the display screen, and the control means enlarges or displays the display size of various information displayed on the display screen around the visual recognition location detected by the visual line detection means. It is preferable to reduce the size. In this case, since it can be enlarged or reduced around the place where the user is gazing, enlargement or reduction along the user's intention can be effectively performed.

  In addition, it further comprises a distance measuring means for measuring the distance from the display screen to the user, and the determining means determines whether the measured current distance is larger than the immediately preceding distance measured immediately before. When the determination means determines that the current distance is greater than the previous distance, the control means reduces the display size, and when the determination means determines that the current distance is less than the previous distance, the control means displays The size may be increased. In this case, the above-described natural movement that the user takes when the display size of character information or the like is different from the preferred size can be reliably detected.

  The apparatus further includes acceleration measuring means for measuring acceleration when the communication terminal moves in the viewing direction of the user intersecting with the display screen, and the determination means detects the movement of the communication terminal by detecting acceleration in the viewing direction. When the acceleration in the first viewing direction from the front surface to the back surface of the display screen is detected by the determining device, the control means reduces the display size and displays the display screen in the viewing direction. When the acceleration in the second viewing direction from the back surface to the front surface is detected by the determination means, the display size may be increased. In this case, it is only necessary to measure the acceleration, and the operation of comparing and determining the current distance and the immediately preceding distance as in the case of measuring the distance becomes unnecessary, so that the apparatus can be simplified.

  According to the present invention, it is possible to easily enlarge or reduce the display size of character information or the like on the display screen of the communication terminal.

It is a block diagram which shows the function structure of the communication terminal which concerns on 1st Embodiment. It is a figure which shows the hardware constitutions of a communication terminal. It is a figure which shows typically the measuring method of the distance between a communication terminal and a user. It is a figure which shows the example of the measurement data stored in a storage part. It is a flowchart which shows the operation | movement at the time of adjusting a display size. It is a block diagram which shows the function structure of the communication terminal which concerns on 2nd Embodiment. It is a flowchart which shows the operation | movement at the time of adjusting a display size.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the description of the drawings, if possible, the same elements are denoted by the same reference numerals, and redundant description is omitted.

(First embodiment)
First, the configuration of the communication terminal 10 according to the present embodiment will be described with reference to FIG. The communication terminal 10 is a terminal used by the user M, and is, for example, a mobile phone or a PHS. The communication terminal 10 has communication functions such as an Internet browser and a map application, and can acquire various information from the Internet site S and map server T connected via the network NT and display them on the display screen. ing. Functionally, the communication terminal 10 includes a communication unit 11, a display unit 12 (display unit), a sensor unit 13, a storage unit 14 (storage unit), a determination unit 15 (determination unit), and a control unit 16 (control unit). It has.

  As shown in FIG. 2, the communication terminal 10 physically includes a CPU 10a, a RAM 10b, a ROM 10c, an input device 10d, an output device 10e, a communication device 10f, and a recording device 10g, which are connected to a bus 10h. Has been. The CPU 10a loads and executes predetermined computer software (including a computer program for executing processing performed by the communication terminal 10 shown in FIG. 5) stored in a built-in memory such as the ROM 10c or the recording device 10g into the RAM 10b. Thus, the communication terminal 10 is comprehensively controlled.

  The input device 10d is a data input device that includes an infrared sensor, a keyboard, and the like that measure the distance to the object, and outputs the input data to the CPU 10a. The output device 10e is a display device (display screen) such as an LCD, and displays image data, character data, and the like input from the CPU 10a on the LCD. The communication device 10f has an interface for performing communication with various sites via the network NT or the like. The recording device 10g stores the computer software executable by the CPU 10a. The communication unit 11 to the control unit 16 illustrated in FIG. 1 are realized by the CPU 10a executing the above-described computer software stored in the ROM 10c, the recording device 10g, and the like, and operating each component of the communication terminal 10 illustrated in FIG. It is a function. In particular, the CPU 10a uses the communication unit 11 to the control unit 16 to execute processing performed by the communication terminal 10 illustrated in FIG.

  The communication unit 11 is a part that acquires various types of information from the network NT. When the operation unit (not shown) is operated by the user M so as to connect to a predetermined site on the Internet (for example, the Internet site S or the map server T shown in FIG. 1), the communication unit 11 Based on the above, various applications for communication are activated and processing for connecting to each site is performed, and various information is acquired. The communication unit 11 outputs various information acquired from a predetermined site to the display unit 12.

  The display unit 12 includes a display screen 12a made of, for example, an LCD, and is a part that displays various types of information on the display screen 12a. When various information is input from the communication unit 11, the display unit 12 displays the input various information on the display screen 12a. The display unit 12 may display various other information stored in a storage unit (not shown) of the communication terminal 10 on the display screen 12a. Various information displayed on the display screen 12a by the display unit 12 is visually recognized by the user M (eyes). When the display unit 12 displays various information on the display screen 12 a, the display unit 12 outputs a status signal indicating that the display is being performed to the sensor unit 13.

  The sensor unit 13 includes a distance measurement unit 17 (distance measurement unit) and a line-of-sight detection unit 18 (line-of-sight detection unit).

The distance measuring unit 17 is a part that measures the distance H from the display screen 12a to the user M (head). As shown in FIG. 3, the distance measuring unit 17 includes a distance sensor 17a provided adjacent to the display screen 12a. With such an arrangement, the distance measuring unit 17 periodically measures the distance H between the user M (head) during communication and the display screen 12a using the distance sensor 17a. The distance H measured periodically is expressed as a distance H _n , a distance H _{n + 1} . The distance measuring unit 17 starts periodic measurement of the distance H when the display state signal from the display unit 12 is input. If the distance between the display screen 12a and the user M can be measured, the distance sensor 17a may be provided at a position away from the display screen 12a by a predetermined distance. The distance measurement unit 17 outputs the measured distance H data to the storage unit 14.

  The line-of-sight detection unit 18 is a part that detects the visual spot P that the user M is viewing from the information displayed on the display screen 12a. The line-of-sight detection unit 18 includes two image sensors 18a, and performs image processing to detect the user's M viewing location P from the images of the user M (face and eyes) input from the two image sensors 18a. Conventional techniques are used for such image processing. For example, a technique for detecting a point of gaze by detecting that a gaze direction of a human or the like stays in a field of view having a visual acuity equal to or greater than ½ of the line-center visual acuity of the viewpoint central visual acuity (Japanese Patent Laid-Open No. 2006-2006) No. 204855). When the determination result that the distance H between the display screen 12a and the user M has increased or decreased is input from the determination unit 15 by the determination unit 15 described later, the line-of-sight detection unit 18 detects the above-described visual spot P. The coordinate information of the detected visual spot P is output to the control unit 16.

  The memory | storage part 14 is a part which memorize | stores the data of the distance H output from the distance measurement part 17 (refer FIG. 4). When the data of the distance H is input from the distance measuring unit 17, the storage unit 14 stores the input data of the distance H in the order of measurement. The storage unit 14 collectively determines data of the current distance H measured at a certain time and data of the previous distance H measured immediately before the certain time among the stored data of the distance H at a predetermined timing. 15 is output.

The determination unit 15 is a part that determines increase / decrease in the distance H between the display screen 12a and the user M. When the data of the current distance H _{n + 1} and the immediately preceding distance H _n are input from the storage unit 14, the determination unit 15 compares the two data to determine increase or decrease in the distance H between the display screen 12 a and the user M. To do. Determining unit 15, when the current distance H _{n + 1} is greater than the immediately preceding distance H _n, it is determined that the distance H between the display screen 12a and the user M is increased, than the current distance H _{n + 1} is immediately before the distance H _n If it is smaller, it is determined that the distance H between the display screen 12a and the user M has decreased. The determination unit 15 outputs the determination result regarding the increase or decrease of the distance H to the control unit 16 and the line-of-sight detection unit 18. The determination result output to the control unit 16 includes a determination result that the distance H between the display screen 12a and the user M has increased or decreased and a determination result that the distance H has not increased or decreased. The determination result output to the detection unit 18 includes only the determination result that the distance H between the display screen 12a and the user M has increased or decreased.

The control unit 16 is a part that enlarges or reduces the display size of various information displayed on the display screen 12 a by the display unit 12 based on the increase or decrease of the distance H determined by the determination unit 15. When the determination result from the determination unit 15 and the coordinate information of the visual recognition point P from the line-of-sight detection unit 18 are respectively input, the control unit 16 indicates that the determination result indicates that the current distance H _{n + 1} is greater than the immediately preceding distance H _n ( If the distance H indicates an increase) generates a resizing signal to reduce the display size on the display screen 12a about the viewing point P, the determination result is that the current distance H _{n + 1} is smaller than the immediately preceding distance H _n When (distance H decreases), a size change signal is generated that enlarges the display size on the display screen 12a around the visual recognition point P. The control unit 16 outputs the generated size change signal to the display unit 12, and enlarges or reduces the display size of the display screen 12a. For example, when the display size is enlarged, the enlargement process is performed so that the portion displayed on a part of the display screen 12a becomes the entire display screen 12a, and when the display size is reduced, the display screen 12a is displayed. The reduction process may be performed so that the entire screen is part of the display screen 12a. Alternatively, a certain enlargement ratio or reduction ratio may be determined in advance, and the display size of the display screen 12a may be enlarged or reduced based on the enlargement ratio / reduction ratio.

  Next, a display size adjustment method in the communication terminal 10 will be described with reference to FIG.

  First, the communication unit 11 determines whether or not a predetermined application has been activated by the user in the communication terminal 10 (step S1). If it is determined in step S1 that the predetermined application has been activated, the process proceeds to step S2, where various information for display is output from the communication unit 11 to the display unit 12, and the display unit 12 is based on the input various information. A predetermined screen is displayed on the display screen 12a. Subsequently, if the application is continuing (step S3), a status signal indicating that the application is being displayed is output from the display unit 12 to the sensor unit 13, and the distance measurement unit 17 of the sensor unit 13 causes the user M and the communication terminal 10 to communicate with each other. Measurement and recording of the distance H between the two is performed (step S4).

Subsequently, when the measurement and recording of the distance H is executed in step S4, the determination unit 15 immediately before the current distance H _{n + 1} measured by the distance measurement unit 17 is measured and stored in the storage unit 14. or equal or not the distance _{H n} is determined (step S5). After the present distance _{H n + 1} is determined to be the same as the previous distance _{H n} in step S5, the flow returns to step S3. Incidentally, when the immediately preceding distance H _n has not yet been measured (i.e., if the first measurement), the process returns to step S3, and repeats the same measuring process. Thereby, the second distance measurement is executed.

Subsequently, when it is determined in step S5 that the current distance H _{n + 1} is not the same as the immediately preceding distance H _n , the process proceeds to step S6, and whether or not the current distance H _{n + 1} is greater than the immediately preceding measured distance H _n. Is determined (determination step, step S6). If it is determined in step S6 that the current distance H _{n + 1} measured by the distance measuring unit 17 is smaller than the immediately preceding distance H _n measured immediately before (distance H decreases), the current display is on the display screen 12a. The medium display size is not suitable, and for example, it is assumed that the display size is small. Therefore, the line-of-sight detection unit 18 detects the visual recognition point P of the user M (step S7), and the control unit 16 enlarges the display size of the display screen 12a at a constant enlargement rate around the visual recognition point P. (Control step, step S8).

On the other hand, in step S6, if the current distance H _{n + 1} measured at distance measuring unit 17 is determined to be larger than the immediately preceding distance H _n measured immediately before (the distance H is increased) is currently displayed screen 12a It is assumed that the display size during display is not suitable, for example, the display size is large. Therefore, the line-of-sight detection unit 18 detects the visual recognition point P of the user M (step S9), and the control unit 16 reduces the display size of the display screen 12a at a constant reduction rate around the visual recognition point P (control). Step, step S10). Steps S3 to S10 described above are performed until the application ends. When it is determined in step S3 that the application has ended, the above-described processing ends. Note that the display size changed in the above-described processing is processed so as to return to the initial display size at the same time as the end of the application.

  According to the present embodiment, when the display size of character information or the like is smaller than a preferred size, the user M moves the display screen 12a closer to the user M, and conversely, the display size of the character information or the like is small. When the size is larger than the preferred size, a natural movement in which the user M moves the display screen 12a away from the user M is detected by determining an increase or decrease in the distance H between the display screen 12a and the user M. . And according to such a natural movement of the user M, the display size of various information displayed on the display screen 12a by the display unit 12 is enlarged or reduced. For this reason, it is possible to easily enlarge or reduce the display size of character information or the like on the display screen 12a of the communication terminal 10 without performing a key operation or the like.

  Moreover, the visual line detection part 18 which detects the user's M visual recognition part P in the display screen 12a is further provided, and the control part 15 is displayed on the display screen 12a centering on the visual recognition part P detected by the visual line detection part 18. FIG. The display size of various information is enlarged or reduced. In this way, the viewing location P can be estimated as a location where the user M is gazing, and the display size of the display screen 12a can be enlarged or reduced with the viewing location P as the center. Enlargement or reduction can be performed more effectively.

Also includes a distance measuring unit 17 for measuring a distance H from the display screen 12a until the user M, the determination unit 15, whether the current distance H _{n + 1,} which is measured is greater than the immediately preceding distance H _n measured immediately before not or determining the increase or decrease of the distance H by determining, control unit 16, if the current distance H _{n + 1} is determined to be larger than the immediately preceding distance H _n by the determination unit 15, to reduce the display size of the display screen 12a When the determination unit 15 determines that the current distance H _{n + 1} is smaller than the previous distance H _n , the display size of the display screen 12a is enlarged. Therefore, it is possible to reliably detect the natural movement that the user M takes when the display size of character information or the like is different from the preferred size.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. In the present embodiment, instead of the distance measuring unit 17 that measures the distance H between the user M and the display screen 12a, an acceleration measuring unit 22 that detects the movement of the communication terminal 20 is provided. Is different. Hereinafter, a description will be given focusing on differences from the first embodiment.

  The communication terminal 20 has a communication function similar to that of the communication terminal 10 of the first embodiment. As shown in FIG. 6, the communication unit 11, the display unit 12, the sensor unit 21, the determination unit 15, and the control unit 16 are included. I have. The sensor unit 21 includes a line-of-sight detection unit 18 and an acceleration measurement unit 22 (acceleration measurement means). Note that the communication terminal 20 does not include the storage unit 14 because the acceleration measurement unit 22 directly measures the acceleration of the communication terminal 20.

  The acceleration measuring unit 22 is a part that measures acceleration when the communication terminal 20 moves in the viewing direction of the user M orthogonal to the display screen 12a. The acceleration measuring unit 22 includes an acceleration sensor built in the communication terminal 20 and periodically measures the acceleration A of the communication terminal 20. The acceleration measuring unit 22 starts measuring the acceleration A of the communication terminal 20 along the viewing direction D (see FIG. 3) of the user M when a display state signal is input from the display unit 12. The acceleration measurement unit 22 outputs the measured acceleration A data to the determination unit 15.

  When the acceleration A data is input from the acceleration measurement unit 22, the determination unit 15 detects the movement of the communication terminal 20 from the value of the acceleration A, thereby increasing or decreasing the distance H between the display screen 12 a and the user M. This is the part to be estimated. The determination unit 15 determines whether the detected acceleration A is an acceleration in the first viewing direction from the front surface to the back surface of the display screen 12a in the viewing direction D (distance H increases) or in the viewing direction D. Among these, it is determined whether the acceleration is in the second viewing direction from the back surface to the front surface of the display screen 12a (distance H decreases). The determination unit 15 outputs a determination result for the acceleration A to the control unit 16 and the line-of-sight detection unit 18. The determination result output to the control unit 16 includes a determination result that the acceleration A is acceleration in the first or second viewing direction and a determination result that the acceleration A is zero. The determination result output to 18 includes only the determination result that the acceleration A is the acceleration in the first or second viewing direction.

  When determining that the acceleration A is an acceleration in the first viewing direction, the determination unit 15 also determines whether the acceleration A is greater than a predetermined threshold B, and the acceleration A is equal to or less than the threshold B. In this case, it is determined that the acceleration is within the error range and the determination result described above is not generated. If the determination unit 15 determines that the acceleration A is an acceleration in the second viewing direction (in this case, the acceleration A is expressed as minus), is the acceleration A smaller than a predetermined threshold −B? If the acceleration A is equal to or greater than the threshold −B, it is determined that the acceleration is a minute acceleration within the error range, and the determination result described above is not generated.

  The control unit 16 is a part that enlarges or reduces the display size of various information displayed on the display screen 12 a by the display unit 12 based on the acceleration A determined by the determination unit 15. When the determination result from the determination unit 15 and the coordinate information of the visual recognition point P from the line-of-sight detection unit 18 are input, the control unit 16 determines that the determination result indicates that the acceleration A is an acceleration (distance H in the first visual recognition direction). ) Is generated, a size change signal for reducing the display size on the display screen 12a around the viewing point P is generated, and the determination result indicates that the acceleration A is the acceleration in the second viewing direction (the distance H is In the case of indicating (decrease), a size change signal is generated for enlarging the display size on the display screen 12a around the visual recognition point P. The control unit 16 outputs the generated size change signal to the display unit 12, and enlarges or reduces the display size of the display screen 12a.

  Next, a display size adjustment method in the communication terminal 20 will be described with reference to FIG. Steps S1 to S3 are the same as in the first embodiment.

  In step S3, if the application is continuing, a status signal indicating that the application is being displayed is output from the display unit 12 to the sensor unit 21, and the acceleration measuring unit 22 of the sensor unit 21 moves the communication terminal 20 in the visual recognition direction D. Is measured (step S14). When the acceleration A is measured in step S14, the determination unit 15 determines whether or not the acceleration A measured by the acceleration measurement unit 22 is zero (step S15). If it is determined in step S15 that the acceleration A is zero, the process returns to step S3. In the present embodiment, for the sake of convenience, the following description will be continued assuming that the acceleration A in the first viewing direction is positive and the acceleration A in the second viewing direction is negative.

  Subsequently, when it is determined in step S15 that the acceleration A is not zero, the process proceeds to step S16, and it is determined whether or not the acceleration A is greater than zero (determination step, step S16). If it is determined in step S16 that the acceleration A measured by the acceleration measuring unit 22 is greater than zero (distance H increases), it is determined whether the determined acceleration A is greater than a predetermined threshold B. (Step S17) If the acceleration A is equal to or less than the threshold B, the error range is returned to Step S3, and if the acceleration A is larger than the threshold B, the process proceeds to Step S18. And the visual recognition part P of the user M is detected by the line-of-sight detection part 18 (step S18), and the control part 16 reduces the display size of the display screen 12a at a fixed reduction ratio centering on the visual recognition part P. (Control step, step S19).

  On the other hand, if it is determined in step S16 that the acceleration A measured by the acceleration measuring unit 22 is smaller than zero (distance H is decreased), is the determined acceleration A smaller than a predetermined threshold −B? (Step S20), the process returns to step S3 as the error range if the acceleration A is greater than or equal to the threshold −B, and proceeds to step S21 if the acceleration A is smaller than the threshold −B. And the visual recognition part P of the user M is detected by the line-of-sight detection part 18 (step S21), and the control part 16 enlarges the display size of the display screen 12a with the fixed expansion ratio centering on the visual recognition part P. (Control step, step S22). Steps S3 and S14 to S22 described above are performed until the application ends. When it is determined in step S3 that the application has ended, the above-described processing ends.

According to this embodiment, the acceleration measuring unit 22 that measures the acceleration A when the communication terminal 20 moves in the viewing direction D of the user M that intersects the display screen 12a is further provided, and the determination unit 15 includes the viewing direction D. By detecting the acceleration A, the control unit 16 determines the acceleration A in the first viewing direction from the front surface to the back surface of the display screen 12a in the viewing direction D. When detected by the unit 15, the display size is reduced, and when the determination unit 15 detects the acceleration A in the second viewing direction from the back surface to the front surface of the display screen 12 a in the viewing direction D, the display size is changed. I try to enlarge it. For this reason, it is only necessary to measure the acceleration A. In the first embodiment, such as comparing and determining the current distance H _{n + 1} and the immediately preceding distance H _n (that is, comparing time series data) as in the case of measuring the distance H. Since this process is unnecessary, the apparatus can be simplified.

  As mentioned above, although this invention was concretely demonstrated based on the embodiment, this invention is not limited to the said embodiment. For example, in the above embodiment, the distance measurement unit 17 measures the distance H between the display screen 12a and the user M in the first embodiment, and the acceleration measurement unit 22 detects the movement of the communication terminal 20 in the second embodiment. However, both the distance measurement unit 17 and the acceleration measurement unit 22 may be provided in one communication terminal to increase detection accuracy.

DESCRIPTION OF SYMBOLS 10,20 ... Communication terminal, 11 ... Communication part, 12 ... Display part, 12a ... Display screen, 13, 21 ... Sensor part, 14 ... Memory | storage part, 15 ... Determination part, 16 ... Control part, 17 ... Distance measurement part, 17a ... distance sensor, 18 ... gaze detection unit, 18a ... image sensor, 22 ... acceleration measurement unit, D ... viewing direction, H ... distance, M ... user, P ... viewing location, NT ... network.

Claims (5)

A communication terminal with a display screen,
Display means for displaying various information on the display screen;
Determination means for determining the increase or decrease of the distance between the display screen and the user or the movement of the communication terminal;
Control means for enlarging or reducing the display size of the various information displayed on the display screen by the display means based on the increase or decrease of the distance determined by the determination means or the presence or absence of the movement;
Communication terminal equipped with. Further comprising line-of-sight detection means for detecting the user's visual recognition location on the display screen,
2. The communication terminal according to claim 1, wherein the control unit enlarges or reduces the display size of the various information displayed on the display screen with the visual recognition point detected by the visual line detection unit as a center. . Further comprising distance measuring means for measuring the distance from the display screen to the user;
The determination means determines whether the distance is increased or decreased by determining whether the measured current distance is greater than the immediately preceding distance measured immediately before,
The control means reduces the display size when the determination means determines that the current distance is greater than the immediately preceding distance, and the determination means determines that the current distance is less than the immediately preceding distance. The communication terminal according to claim 1 or 2, wherein the display size is enlarged. Acceleration measuring means for measuring acceleration when the communication terminal moves in the viewing direction of the user intersecting the display screen,
The determination means determines the presence or absence of movement of the communication terminal by detecting acceleration in the viewing direction,
The control unit reduces the display size when the acceleration in the first viewing direction from the front surface to the back surface of the display screen in the viewing direction is detected by the determination unit, and the control unit reduces the display size. 3. The communication terminal according to claim 1, wherein when the determination unit detects an acceleration in a second viewing direction from the back surface to the front surface of the display screen, the display size is increased. A method of adjusting the display size of the various information in a communication terminal having a display means for displaying various information on a display screen,
A determination step of determining whether there is an increase or decrease in the distance between the display screen and the user or the movement of the communication terminal;
A control step of enlarging or reducing the display size of the various information displayed on the display screen by the display means based on the increase or decrease of the distance determined by the determining step or the presence or absence of the movement;
Including adjustment method.

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