JP2013254063A - Information terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically adjust the size of displayed information to a size corresponding to the distance between a terminal and its user.SOLUTION: An information terminal includes: a display part for displaying information; a distance measurement part for measuring a distance between a surface which the display part is disposed on and a user; a storage part for pre-storing adjustment information indicating a relationship between the measured distance and a size of information displayed on the display part; and an information adjustment part for changing a size of information to be displayed on the display part to a size of information corresponding to the measured distance, using the distance measured by the distance measurement part and the adjustment information stored in the storage part.

Description

  The present invention relates to an information terminal, and more particularly to an information terminal capable of adjusting the display direction of a display screen and the size of display information.

  Conventionally, an information processing apparatus having a display device that displays character information has been used. Some have a function of changing the character size of the character information to be displayed by the user's own setting operation. Furthermore, a camera is provided, and the viewer's eyes are photographed with the camera before and after displaying characters on the display device, and the viewer's eyes are narrower after display than before characters are displayed. Display device with automatic display character adjustment function that determines that the displayed characters are difficult to read for viewers and automatically changes the display character size, color, background color, text decoration, etc. to a display that is easy to read (See Patent Document 1).

  Further, based on the change in the image information acquired by the camera, the change in the distance to the user and the change in the orientation of the user are obtained by image recognition, the change in the distance to the recognized user and the user's There has been proposed a portable terminal that automatically adjusts and controls the size of display information to be displayed and the display direction of display information in accordance with a change in orientation (see Patent Document 2).

JP 2010-258940 A JP 2010-9502 A

  As described above, a terminal equipped with a camera is easy to see the display character size, etc. by detecting changes in the shape of the user's eyes, or by determining changes in the distance to the user or the orientation of the user It can be. However, since a user cannot be photographed on a terminal without a camera, the character size or the like cannot be automatically adjusted as described above, and the user needs to perform a predetermined setting change operation. . In addition, since most in-cameras mounted on current mobile devices generally have a fixed focus, the distance and positional relationship between the device and the user's face cannot be measured accurately. In some cases, it is difficult to discriminate fine facial expressions.

  Therefore, depending on the result of shooting by the camera, the character size and orientation after automatic adjustment may be in a state not intended by the user. In addition, in order to recognize an image using a camera, a program for performing complicated processing is required, which increases costs. Furthermore, since it is necessary to start the camera constantly or frequently in order to perform image recognition, the power consumption increases and the user's input operation is complicated.

  By the way, in recent portable terminals such as smartphones and tablet terminals, an input device such as a mouse or a keyboard is connected to the main body of the portable terminal and used like a conventional desktop type personal computer or notebook personal computer. It has been broken. For example, a keyboard having a Bluetooth (registered trademark) function is connected to a portable terminal that does not have a keyboard, the portable terminal is mainly used as a display unit, and characters are input using the keyboard. . In this case, in a mode in which the user performs character input, the mobile terminal is in a state of being fixed on a desk, for example, and the distance between the user and the terminal is larger than that in the case of inputting characters by holding the mobile terminal in hand. It will be longer.

Since the display screen of a mobile terminal is generally smaller than that of a display device such as a personal computer, the displayed characters are relatively small, and when the distance between the user and the terminal is increased, the user is displayed on the display screen of the mobile terminal. The displayed characters are difficult to see. Therefore, the user may perform an operation of enlarging displayed characters in order to confirm the display contents. However, when the mobile terminal is used in a fixed manner as in a host terminal such as a conventional notebook computer as described above, the character size is not set by the user, for example, in order to make the input operation smooth. It is desirable to be able to adjust automatically.
Therefore, the present invention has been made in consideration of the above circumstances, and the information displayed on the display screen can be simplified without performing complicated processing such as image recognition using a conventional camera. It is an object to provide an information terminal that can be adjusted.

  The present invention relates to a display unit for displaying information, a distance measuring unit for measuring a distance between a surface on which the display unit is arranged and a user, the measured distance, and a size of information displayed on the display unit. Of the information to be displayed on the display unit using the storage unit that stores the adjustment information indicating the relationship between the distance, the distance measured by the distance measurement unit, and the adjustment information stored in the storage unit. The present invention provides an information terminal comprising an information adjustment unit that changes the size to the size of information corresponding to the measured distance.

  According to this, since the size of the information to be displayed on the display unit is automatically changed in correspondence with the measurement distance between the information terminal and the user, so that the user using the information terminal is easy to see, Information can be displayed, and it is not necessary for the user to perform an input operation to change the size of the information, and the burden of the user's input operation can be reduced.

In addition, the information displayed on the display unit includes characters, and the adjustment information stored in the storage unit is a character adjustment that indicates the relationship between the measured distance and the size of the character displayed on the display unit. Information, and the information adjustment unit uses the measured distance and the character adjustment information to determine the size of the character to be displayed on the display unit, and the character size corresponding to the measured distance. It is a character adjustment part to be changed to.
According to this, since the size of the character displayed on the display unit is automatically changed according to the measurement distance, the character can be displayed so that the user using the information terminal can easily view. .

In addition, the distance measuring unit includes a light emitting unit that outputs infrared rays and a light receiving unit that detects reflected light of the output infrared rays.
According to this, since the light emitting part that outputs infrared rays and the light receiving part that detects reflected light of infrared rays are provided as relatively inexpensive devices, the manufacturing cost can be reduced. The transmission / reception control can be realized with a simple configuration and power consumption can be reduced as compared with the case where display information is adjusted by image recognition using a camera.

The information processing apparatus further includes an input unit that inputs an input line drawn in a predetermined direction, and an orientation determination unit that determines an orientation of the information terminal, and sets an upward direction of information to be displayed on the display unit in the storage unit Orientation information is stored in advance, and the orientation information includes input line information for specifying a drawing direction of the input line and an upper direction of the display screen among four sides constituting the display screen of the display unit. Is stored in association with the upper side information for specifying the side located in the direction, and the direction determination unit corresponds to the input line information of the direction information that matches the drawing direction of the input line input by the input unit. The orientation of the information terminal is determined by selecting the attached upper side information.
According to this, since the user determines the orientation of the terminal by drawing the input line in a predetermined direction, the user can perform an upward input of information displayed on the display unit only by performing an easy input operation. Can be set.

In addition, a connection detection unit that detects that a connection device connected by wire or wireless is connected, and when the connection detection unit detects that a connection device is connected, the orientation determination unit The direction of the information terminal is determined, and the information size is changed by the information adjustment unit.
According to this, when it is detected that the connected device is connected to the information terminal, the determination of the orientation of the information terminal and the change in the size of the information are executed. By performing the connection operation, the display state (orientation and size) of the information displayed on the display unit can be adjusted so that the user can easily use it, and until the information is displayed on the display unit. The operation burden on the user can be reduced.

  According to the present invention, the distance between the information terminal and the user is measured, and the size of the information to be displayed on the display unit is changed in correspondence with the measured distance, so that the user using the information terminal is easy to see Information can be displayed so that In addition, since the size of the display information is automatically changed according to the measurement distance, the user does not need to perform an input operation to change the size of the display information, and the burden of the user's input operation can be reduced. When the distance measuring unit is composed of an infrared light emitting unit and a light receiving unit, the distance measuring unit can be configured with a relatively inexpensive device, so that the display information is adjusted by providing a camera and performing image recognition. In comparison, display information can be adjusted with a simple configuration, and manufacturing costs and power consumption can be reduced.

It is a block diagram of the configuration of an embodiment of the information terminal of the present invention. It is explanatory drawing of one Example of direction information and character adjustment information utilized by this invention. It is explanatory drawing of one Example of the input direction of the input line of this invention, and the display direction of information. It is a relationship graph of one Example of the measurement distance and character size of this invention. It is a flowchart of one Example of the terminal orientation discrimination | determination process and character size adjustment process of this invention.

The best mode for carrying out the present invention will be described below with reference to the drawings. However, this does not limit the present invention.
<Configuration of information terminal of the present invention>
FIG. 1 shows a configuration block diagram of an embodiment of an information terminal of the present invention. In FIG. 1, an information terminal 1 (hereinafter also simply referred to as a terminal) of the present invention mainly includes a control unit 10, a display unit 11, an input unit 12, a distance measurement unit 13, an orientation determination unit 14, an information adjustment unit 15, and a connection. A detection unit 16 and a storage unit 21 are provided. However, other functional blocks such as a communication unit may be provided. The information terminal 1 according to the present invention corresponds to a small and lightweight terminal having portability, for example, like conventional mobile phones, smartphones, and tablet terminals.

  The control unit 10 is a part that executes various functions of the information terminal 1 of the present invention, and mainly includes a CPU, a ROM, a RAM, an I / O controller, a timer, and the like. Further, the CPU organically operates each hardware based on a program stored in a ROM or the like, for example, a function for detecting a connected device, a function for measuring a distance to a user of the terminal 1, and a function of the terminal 1 Executes the orientation discrimination function, display character size adjustment function, etc.

  The display unit 11 is a part that displays various information such as characters, symbols, figures, images, and the like, and an LCD, an organic EL display, or the like is used. The input unit 12 is a part where the user inputs instructions such as input of characters, symbols, graphics, etc., and function selection. Further, as will be described later, it is also a part for inputting an input line drawn in a predetermined direction. As the input unit 12, for example, a mouse, a keyboard, a touch panel, and the like are used. In the following embodiments, a touch panel is used. In the case of a touch panel, the display unit 11 and the input unit 12 are formed to overlap each other, or both are integrally formed. In the present invention, the connection device 50 is connected to the information terminal 1. When the device to be connected is the input device 51, the connected input device other than the input unit 12 provided in the terminal 1. From 51, characters and the like can be input.

  The distance measuring unit 13 is a part that measures the distance between the terminal 1 and the user (user) of the terminal 1. When the distance measuring unit 13 is provided on the surface on which the display unit 11 is arranged, the distance measuring unit 13 measures the distance between the surface on which the display unit 11 is arranged and the user. The distance measuring unit 13 measures the distance between the terminal and the user by outputting a signal such as infrared rays and detecting the signal reflected by the user. In this case, the distance measuring unit 13 includes a light emitting unit 13-1 that outputs infrared rays toward the user, and a light receiving unit 13-2 that detects reflected light of the infrared rays reflected by the user. .

  The orientation determination unit 14 is a portion that determines the orientation of a terminal that displays information. As will be described later, the orientation of the terminal is determined by the drawing direction of the input line input by the user using the touch panel of the input unit 12. For example, in the storage unit 21, input line information for specifying the drawing direction of the input line, and upper side information for specifying the side located in the upper direction of the display screen among the four sides constituting the display screen of the display unit 11. Is stored in advance, and the upper side information associated with the input line information in the direction information that matches the drawing direction of the input line input by the input unit 12 is selected to obtain information. Determine the orientation of the terminal.

  The information adjustment unit 15 is a part that adjusts the size (size) of information including characters, graphics, and the like displayed on the display unit 11. Further, as will be described later, the information adjustment unit 15 uses the distance measured by the distance measurement unit 13 and the adjustment information 23 stored in the storage unit 21 to display the size of information to be displayed on the display unit 11. Is changed to the size of the information corresponding to the measured distance. For example, when the measured distance is relatively long, the size of information to be displayed on the display unit is changed to be large. Further, when the measured distance is relatively short, the size of information to be displayed on the display unit is changed to be small.

  The displayed information includes characters, figures, symbols, images, and the like. In the following embodiments, the case where the size of a character is changed will be described mainly by focusing on the character. Therefore, the information adjustment part 15 shall be provided with the character adjustment part 15-1 which adjusts the magnitude | size of a character. The size of the character is also adjusted based on the distance measured by the distance measuring unit 13. For example, the longer the measurement distance, the larger the size of the displayed characters, making it easier to see. If the measurement distance is relatively short, the user is likely to see the information relatively easily. To do.

  The connection detection unit 16 is a part that detects whether or not the connection device 50 connected by wire or wireless is connected to the terminal 1. The connection form between the connection device 50 and the information terminal 1 may be either a wired connection or a wireless connection. In the case of wired connection, the connection device 50 and the information terminal 1 are connected by a physical cable. For example, a cable such as USB or HDMI is used. In the case of wireless connection, the connection device 50 and the information terminal 1 are connected by a wireless signal. For example, a wireless signal such as Bluetooth or infrared is used.

  In the case of wired connection, for example, when a cable connected to the connection device 50 is connected to the information terminal 1, the voltage or current of the power signal flowing between the information terminal 1 and the connection device 50 through the power line of the cable is By detecting this, it is recognized that the connection device 50 is connected to the terminal 1. In the case of wireless connection, for example, when the connection device 50 is brought close to the information terminal 1 and the link establishment procedure using a predetermined wireless signal is successful between the information terminal 1 and the connection device 50, the connection device 50 is connected. Recognize that.

  For both wired connection and wireless connection, a conventionally used connection detection procedure can be used. In addition, when the link establishment procedure is executed, it is recognized what function the connected device performs, and information (connection device information 25) for identifying the connection device 50 such as a model number is stored. Stored in the unit 21.

  After the connection detection unit 16 detects that the connection device 50 is connected, a signal for executing the original function of the connection device 50 is transmitted and received between the information terminal 1 and the connection device 50. The connection device 50 is a device having an interface connectable to the information terminal 1, and is, for example, an input device 51 for inputting information. As the input device 51, a mouse 51-1 and a keyboard 51-2 can be used.

  In the present invention, when the connection detection unit 16 detects that the connection device 50 is connected to the terminal 1, the direction determination unit 14 determines the direction of the information terminal and the information adjustment unit 15 (for example, The size of information (character) is changed by the character adjusting unit 15-1). That is, when it is detected that the connection device 50 is connected to the terminal 1, the terminal 1 is fixedly installed on the desk and an input operation is often performed on the desk like a personal computer. Set the orientation and change the information size so that it is easy to see.

  The storage unit 21 stores information and programs used when executing the functions of the information terminal 1 according to the present invention, and stores a semiconductor storage element such as ROM, RAM, and flash memory, a hard disk, an SSD, and the like. Devices and other storage media are used. The storage unit 21 stores, for example, orientation information 22, adjustment information 23, measurement distance 24, connection device information 25, input line information 26, and the like.

  The orientation information 22 is information for setting an upward direction of information displayed on the display unit 11 as will be described later. The adjustment information 23 is information indicating the relationship between the measured distance and the size of information displayed on the display unit 11. In the following embodiments, attention is mainly focused on characters included in the display information. However, as one example of the adjustment information, the character adjustment information 23-1 is stored in advance. The character adjustment information 23-1 is information indicating the relationship between the measured distance and the character size (character size) displayed on the display unit 11. The character adjustment unit 15-1 described above uses the measured distance and the character adjustment information 23-1 to change the size of the character to be displayed on the display unit 11 to the character corresponding to the measured distance. Change to size.

  The measurement distance 24 is a distance measured by the distance measurement unit 13. For example, infrared light is output from the light emitting unit 13-1 disposed on the surface of the terminal 1, and the infrared light reflected by the face of the user who is looking at the display screen of the terminal is detected by the light receiving unit 13-2. Based on the infrared reflection angle detected by the light receiving unit 13-2, an output signal corresponding to the measurement distance is output. The control unit 10 analyzes the output signal to obtain the measurement distance 24 and stores it in the storage unit 21. The measurement distance 24 is used for adjusting the size of information, particularly the character size.

  The connected device information 25 is information for identifying a device connected to the information terminal 1, and, for example, a model number unique to the device, a manufacturing number, or the like is used. The connection device information 25 is transmitted from the connection device 50 to the terminal 1 and stored in the storage unit 21 by a link establishment procedure performed when the device is connected to the terminal.

  The input line information 26 is information for specifying the drawing direction of the input line input by the input unit 12 and is used for setting the orientation of the terminal by the orientation determination unit 14. When the input unit 12 is a touch panel, an input line is input by moving a finger that touches the touch panel in a predetermined direction. For example, in order to set the orientations of the four terminals shown in FIG. 2B, four types of input lines as described later are used. Before displaying information on the display unit 11 of the terminal, the user inputs any input line, and the control unit 10 detects the drawing direction of the input line and stores it as input line information 26. The orientation determination unit 14 compares the stored input line information 26 with the input line information 22 of the predetermined orientation information 22 shown in FIG. 2B, and sets the orientation of the terminal corresponding to the matched input line information. . Based on the orientation of the terminal, the orientation of information displayed on the display unit 11 is determined.

  FIG. 2 shows an explanatory diagram of an embodiment of the orientation information 22 and the character adjustment information 23-1 used in the present invention. The orientation information 22 is information indicating the relationship between the orientation of the terminal 1 and the input line, and is information for setting an upward direction of information displayed on the display unit 11. In other words, when the display screen of the display unit 11 is an area surrounded by four sides and information such as an image is displayed on the display unit 11, which side is the upper side of the image. It is information which shows. As shown in FIG. 2B, the orientation information 22 is input line information for specifying the drawing direction of the input line and the upper side of the display screen among the four sides constituting the display screen of the display unit 11. The upper side information for specifying the located side is stored in association with each other.

  FIG. 2A shows an example of the display screen of the touch panel of the display unit 11. The display screen is an area surrounded by four sides (L1, L2, L3, L4), and an intersection of the side L1 and the side L2 is set as a reference point P0. FIG. 2B shows an example of the orientation information 22. Here, directions (1 to 4) of four terminals are shown, and input line information corresponding to each direction and upper side information for specifying an upper side are associated with each other and stored.

  FIG. 3 shows an explanatory diagram of an embodiment of the drawing direction of the input line and the display direction of information according to the present invention. The input line specifies the drawing direction of the line segment input by the user using the touch panel, and FIG. 3A to FIG. 3D show the four input directions of the input line. As shown in FIG. 2A, the input line is input in a state where the reference point P0 is at the upper left. For example, the input line of “direction 1” in FIG. 2B is defined as “horizontal: left-> right”, and this input line is a user touching the touch panel as shown in FIG. Means a line in which the finger is moved from left to right.

  The upper side (upper side information) indicates the side located in the upper direction of the information displayed on the display screen. For example, the upward side of “direction 1” is the side L1 of the display screen. This means that when an input line that moves from left to right in the horizontal direction is input as the corresponding input line, the upward direction of the information displayed on the display screen is set as the side L1.

  FIGS. 3E to 3H are explanatory diagrams of an example of the direction of information to be displayed. When the input lines shown in FIGS. 3A to 3D are input, information is displayed in directions as shown in FIGS. 3E to 3H, respectively. For example, when the input line of “direction 1” shown in FIG. 3A is input, the upward side corresponding to “direction 1” of the direction information 22 of FIG. 2B is “L1”. As shown in FIG. 3E, information is displayed so that the side L1 of the display screen is in the upward direction.

  Further, the “direction 2” in FIG. 2B is such that, when the input line is inputted from the bottom to the top in the vertical direction as shown in FIG. 3B, the upper side becomes “L2”. Means to display information. In this case, as shown in FIG. 3F, information is displayed in the horizontal direction so that L2 which is the left side of the display screen is in the upward direction.

  Further, the “direction 3” in FIG. 2B is such that when the input line is input from the right to the left in the horizontal direction as shown in FIG. 3C, the upper side becomes “L3”. Means to display information. In this case, as shown in FIG. 3G, information is displayed such that the lower side L3 is in the upward direction. Further, the “direction 4” in FIG. 2B is such that, when the input line is input from the top to the bottom in the vertical direction as shown in FIG. 3D, the side in the top direction becomes “L4”. Means to display information. In this case, as shown in FIG. 3H, information is displayed so that L4 on the right side is in the upward direction.

  In the present invention, the orientation determination unit 14 determines which one of the four “terminal orientations” of the orientation information 22 shown in FIG. 2B corresponds to the input line input by the user. The display information is generated so that the upper side to be displayed is the upper direction of the information displayed on the display screen. Thus, the upper side of the display screen is determined by the direction of the input line input by the user, and information can be displayed so that the upper side is the upper direction of the displayed information.

  The character adjustment information 23-1 is information indicating the relationship between the measurement distance 24 measured by the distance measurement unit 13 and the size of the character (character size) displayed on the display screen of the display unit 11. FIG. 2C shows an explanatory diagram of one embodiment of the character adjustment information 23-1. FIG. 2C shows the measurement distance range and the corresponding character size. For example, when the measured distance is 0 to 10 cm, it means that the character size of the displayed character is set to S01. The character size is indicated, for example, by the number of points conventionally used, and a value such as 8 points is set as “S01”. Here, when the measurement distance is relatively short, it is considered that the distance between the terminal 1 and the user is short, and the user can easily see the display screen and can identify small characters. It is preferable to set a relatively small value as the size (character size).

  On the other hand, when the measurement distance is relatively long, such as 90 to 100 cm, the distance between the terminal 1 and the user is long, and it is considered that the user is in a state in which it is difficult to see the display screen. Is preferably set. That is, in FIG. 2C, the character size S01 is the smallest and the character size S10 is set to the largest numerical value. The numerical range of the measurement distance in FIG. 2C is an example and is not limited to this. The numerical value as shown in FIG. 2C may be fixedly set in advance. Since the visibility of the screen varies depending on the user's visual acuity, age, installation environment, and the like, the user may be able to change the measurement distance and the character size by themselves.

  Further, instead of the character adjustment information 23-1 in FIG. 2C, a calculation formula corresponding to the relationship graph between the distance and the character size shown in FIG. 4 may be stored. If the measurement distance is acquired, the character size corresponding to the distance is obtained from the relation graph of FIG. FIG. 4 shows an example of a relationship graph between the measurement distance and the character size, and shows a case where the measurement distance and the character size are directly proportional. However, the relationship between the two is not limited to a direct proportion, and other relationship graphs may be used.

  The character adjustment information 23-1 may store one set of information in advance, but may store a plurality of sets of character adjustment information 23-1 associated with each connected device 50. By using different character adjustment information 23-1 for each connected device, the character size corresponding to the connected device can be adjusted. Also, the character adjustment information 23-1 in FIG. 2 and the flowchart in FIG. 5 to be described later show an embodiment in which the size of the displayed character is adjusted based on the measurement distance 24 while paying attention to the display character. However, it is not limited to this.

  As described above, the information displayed on the display unit includes graphics, symbols, images (still images, moving images), etc. in addition to characters. For example, the correspondence between the measurement distance and the size of the display image is shown. The image adjustment information may be created in advance, and the size of the image displayed on the display unit 11 may be adjusted based on the measurement distance 24. That is, based on the measured distance, the size of each information may be adjusted for each type of information displayed on the display unit.

<Information terminal orientation discrimination processing and character size adjustment processing>
FIG. 5 shows a flowchart of an embodiment of the information terminal orientation determination process and the character size adjustment process of the present invention. Here, when the connection device 50 is connected to the terminal 1, the terminal 1 starts the host function, determines the orientation of the terminal by the input operation of the input line by the user, and then measures the distance to the user Set the size of characters to be displayed. Thereafter, the character information displayed on the display unit 11 is displayed in a character size corresponding to the measurement distance.

Further, the distance between the terminal 1 and the user is periodically measured, and when the measured distance changes to another numerical value, the character size is changed to a character size corresponding to the changed distance. That is, every time the distance between the terminal and the user changes, the character size is adjusted corresponding to the distance.
However, if the character size is frequently changed, it is assumed that it will be a malfunction or usability will deteriorate.Therefore, a timer is installed and the same distance is measured for a certain time after detecting a change in distance Alternatively, it is preferable to change the character size by determining that the distance has changed when the change width is within a predetermined range for a predetermined time or more after detecting the change in the distance.

  In step S <b> 1, the connection detection unit 16 checks whether or not the connection device 50 is connected to the terminal 1. Here, as described above, whether or not the connection is established is detected based on whether or not the cable is connected and whether or not the link establishment procedure using the radio signal is completed. If it is detected in step S2 that the connected device 50 is connected, the process proceeds to step S3, and if not, the process returns to step S1.

When it is detected that the connection device 50 is connected, the identification information of the connection device 50 is stored in the storage unit 21 as the connection device information 25. In step S3, the control unit 10 starts the host function.
The host function means a function that becomes a “parent” for connecting peripheral devices. The corresponding devices are divided into “host” and “device”. “Host” is a terminal capable of controlling connection to “device”, and “device” transmits data only after receiving a control signal from “host”.

  In step S4, the orientation determination unit 14 asks the user to input an input line in order to set the orientation of the terminal, and detects the input operation. That is, the drawing direction of the input line is detected. Here, for example, a message requesting the user to input an input line for setting the orientation of the terminal is displayed on the display unit 11, and any one of the input lines in FIGS. Wait for input.

  When an input operation is detected in step S5, the orientation determination unit 14 obtains the input line that has been input and the input line information of the orientations of the four terminals that are stored in advance as shown in FIG. Compare and determine the orientation of the terminal. For example, when an input line is input by the user using a touch panel that is one of the input units 12, the input line corresponds to “direction 2” among the directions of the four terminals in FIG. If it is determined that the line is a line, “direction 2” is stored as the input line information 26. Thereafter, when information is displayed on the display unit 11, the information is displayed based on the orientation of the terminal indicated by the input line information 26. In the case of “direction 2”, the information is displayed such that the side L2 of the display screen is the upward side.

  In step S6, the distance measuring unit 13 measures the distance to the user. Here, for example, infrared light is output from the light emitting unit 13-1, and the distance is measured by detecting the infrared light reflected by the light receiving unit 13-2 and hitting the user. The measured distance is stored as a measurement distance 24.

  In step S7, it is checked whether or not the reflected light is detected by the light receiving unit 13-2 and the distance measurement is successful. If the distance measurement with the user is successful, the process proceeds to step S8, and if not, the process proceeds to step S9. If the distance measurement fails and the process proceeds to step S9, the character size is not adjusted, and the character information is displayed with the preset character size or the currently displayed character size. Good.

  In step S8, the character adjustment unit 15-1 adjusts the character size of the character displayed on the display unit 11 based on the stored measurement distance 24. When the character adjustment information 23-1 as shown in FIG. 2C is stored in advance, the display character is changed to a character size corresponding to the measurement distance 24 and displayed on the display unit 11. In step S9, the control unit 10 performs timer monitoring to confirm the continuation state. Here, a time (for example, 3 seconds) corresponding to a timer value preset in the storage unit 21 is counted. After completing the counting of this time, the process proceeds to step S10.

  In step S10, as in step S2, it is checked whether the connected device is connected. If it is confirmed in step S10 that the connected device is connected, the process returns to step S6, and the processes from step S6 to S10 are repeated. In step S10, when it is confirmed that the connected device is not connected, the process ends.

  As described above, in the present invention, the distance measuring unit 13 is provided, the distance between the terminal 1 and the user is measured, and the size of the displayed character is automatically adjusted based on the measured distance. Since the infrared light emitting part and the light receiving part constituting the distance measuring part 13 are devices that are provided at low cost, the apparatus configuration is simpler than that of a conventional apparatus that has a camera and adjusts display characters by image recognition. Manufacturing cost and power consumption can be reduced. Further, in order to set the orientation of the terminal, it is necessary for the user to perform an input operation on the input line. However, since the adjustment of the character size is automatically performed based on the distance measurement by the distance measurement unit 13, the user Therefore, it is not necessary to perform an input operation for changing the character size, and the burden of the user's input operation can be reduced. In addition, the character adjustment information 23-1 as shown in FIG. 2C is set by the user in advance for each user, so that the information is displayed after adjusting the character size to be readable for the user. be able to.

DESCRIPTION OF SYMBOLS 1 Information terminal 10 Control part 11 Display part 12 Input part 13 Distance measurement part 13-1 Light emission part 13-2 Light reception part 14 Direction discrimination | determination part 15 Information adjustment part 15-1 Character adjustment part 16 Connection detection part 21 Storage part 22 Orientation information 23 Adjustment information 23-1 Character adjustment information 24 Measurement distance 25 Connection device information 26 Input line information 50 Connection device 51 Input device 51-1 Mouse 51-2 Keyboard

Claims (5)

A display for displaying information;
A distance measuring unit for measuring a distance between the surface on which the display unit is arranged and a user;
A storage unit that stores in advance adjustment information indicating a relationship between the measured distance and the size of information displayed on the display unit;
Using the distance measured by the distance measuring unit and the adjustment information stored in the storage unit, the size of the information to be displayed on the display unit is the size of the information corresponding to the measured distance. An information terminal comprising an information adjustment unit to be changed. The information displayed on the display unit includes characters,
The adjustment information stored in the storage unit is character adjustment information indicating the relationship between the measured distance and the size of the character displayed on the display unit,
The information adjustment unit uses the measured distance and the character adjustment information to change the character size to be displayed on the display unit to a character size corresponding to the measured distance. The information terminal according to claim 1, wherein the information terminal is an adjustment unit.   The information terminal according to claim 1, wherein the distance measuring unit includes a light emitting unit that outputs infrared rays and a light receiving unit that detects reflected light of the output infrared rays. An input unit for inputting an input line drawn in a predetermined direction;
An orientation discriminator for discriminating the orientation of the information terminal,
The storage unit stores in advance orientation information for setting an upward direction of information displayed on the display unit,
The direction information includes input line information for specifying a drawing direction of the input line, and upper side information for specifying an upper side of the display screen among four sides constituting the display screen of the display unit, Are stored in association with each other,
The orientation determining unit determines the orientation of the information terminal by selecting the upper side information associated with the input line information of the orientation information that matches the drawing direction of the input line input by the input unit. The information terminal according to claim 1, wherein the information terminal is an information terminal. A connection detection unit for detecting that a connection device connected by wire or wireless is connected;
When the connection detection unit detects that a connection device is connected, the direction determination unit performs determination of the direction of the information terminal and the information adjustment unit changes the size of the information. The information terminal according to claim 4.