JP6206085B2 - Information processing apparatus, display control method, and display control program - Google Patents

Description

  The present invention relates to an information processing apparatus, a display control method, and a display control program.

  Currently, devices such as PCs (Personal Computers) and tablet devices are widely used. Although a lot of information is displayed on the display of the device, the information displayed on the display may be limited due to security reasons. For example, the information includes personal information.

  Here, there is a proposal for controlling display on the display by tilting the device or rotating the device. In this proposal, it is determined in which direction the display unit of the mobile terminal device is oriented. When the display unit is oriented in a direction different from the predetermined reference direction, the use is limited only to the information display operation and screen scroll operation except for the secret information of the mobile terminal device. When an operation for displaying the secret information is performed, the non-secret information is displayed on the display unit.

JP 2011-182338 A

  By the way, in the above proposal, no secret information can be displayed without displaying secret information regardless of which user operates the device. However, it is unclear whether the non-secret information displayed on the display is information that may be displayed to the operated user. That is, any user can operate the device, but information that should not be shown depending on the user may be displayed on the display.

  In one aspect, an object of the present invention is to provide an information processing apparatus, a display control method, and a display control program that can improve information security.

  In one aspect, an information processing apparatus having a sensor, an imaging unit, and a control unit is provided. The sensor detects the orientation of the display surface of the display device. The imaging unit images the front of the display surface. When the control unit detects that the orientation of the display surface has been changed by the sensor, the control unit performs face authentication based on the image captured by the imaging unit, and the content of information displayed on the display device according to the result of the face authentication To control.

  In one aspect, a display control method is provided. In this display control method, when the computer detects that the orientation of the display surface of the display device has changed based on the detection result of the sensor, the face is based on the image captured by the imaging unit that images the front of the display surface. Authentication is performed, and the content of information displayed on the display device is controlled according to the result of face authentication.

  Moreover, in one aspect, a display control program that causes a computer to execute the same processing as the above display control method is provided.

  In one aspect, information security can be improved.

It is a figure which shows the information processing apparatus of 1st Embodiment. It is a figure which shows the information processing apparatus of 2nd Embodiment. It is a figure which shows the state which inclined the display of information processing apparatus. It is a figure which shows the state which rotated the whole information processing apparatus and changed the direction of the display. FIG. 3 is a diagram illustrating a hardware example of an information processing apparatus. It is a figure which shows the structural example of the function of information processing apparatus. It is a figure which shows the example of an inclination and azimuth | direction management table. It is a figure which shows the example of a display control management table. It is a figure which shows the example of a display information table. It is a figure which shows the example of a user table. It is a flowchart which shows the example of a monitoring process (the 1). It is a flowchart which shows the example of the display control process accompanying inclination change. It is a flowchart which shows the example of a monitoring process (the 2). It is a flowchart which shows the example of the display control process accompanying azimuth | direction change. It is a figure which shows the specific example of the display content change of 2nd Embodiment. It is a figure which shows the example of a display content control of 2nd Embodiment. It is a figure which shows an example of the user table utilized in 3rd Embodiment.

Hereinafter, the present embodiment will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a diagram illustrating the information processing apparatus according to the first embodiment. The information processing apparatus 1 is an apparatus that can perform face authentication. The information processing apparatus 1 includes a storage unit 1a, a sensor 1b, an imaging unit 1c, a control unit 1d, and a display device 1e. The display device 1e has a display surface 1f.

  The storage unit 1a may be a volatile storage device such as a RAM (Random Access Memory) or a non-volatile storage device such as an HDD (Hard Disk Drive) or a flash memory. The control unit 1d may include a CPU (Central Processing Unit), a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), and the like. The control unit 1d may be a processor that executes a program. As used herein, the “processor” may include a set of multiple processors (multiprocessor).

The storage unit 1a stores, for example, face authentication information 2 and output information 3.
In the face authentication information 2, face information for each user that is referred to during face authentication is registered. The face information is information for specifying a user from face information shown in the image, such as an image obtained by capturing the user's face or a feature amount of the user's face extracted from the image. For example, in the face authentication information 2, face information A1 for specifying the user A and face information B1 for specifying the user B are registered.

  The output information 3 is information indicating a correspondence relationship between a user specified by face authentication and information regarding display contents that can be displayed or cannot be displayed to the user. In the example of FIG. 1, display content A2 that can be displayed to the user A and display content B2 that can be displayed to the user B are registered in the output information 3. In this example, when the user A is specified as a result of the face authentication, the display content A2 is displayed on the display surface 1f. For example, when the user B is specified as a result of the face authentication, the display content B2 is displayed on the display surface 1f.

  The sensor 1b detects the orientation of the display surface 1f of the display device 1e. This will be described in the lower part of FIG. For example, the X axis is taken in the vertical direction and the Y axis is taken in the horizontal direction. Further, a Z axis (not shown) is taken in the horizontal direction and the direction orthogonal to the Y axis. The display surface 1f of the display device 1e rotates around the Z axis as a central axis. For example, the sensor 1b detects an angle in a direction in which the display surface 1f faces with the X-axis direction as a reference angle (that is, an angle of 0 °) and the clockwise direction in FIG. 1 as a positive direction. In the lower left state of FIG. 1, the sensor 1b detects the orientation of the display surface 1f as an angle θ1, and in the lower right state of FIG. 1, the sensor 1b detects the orientation of the display surface 1f as an angle θ2.

  The imaging unit 1c images the front of the display surface 1f. Thereby, the user's face which is browsing the display surface 1f can be imaged. For example, the imaging unit 1c images the face of the user A when the orientation of the display surface 1f is the angle θ1. Here, before the user's face is imaged, the display surface 1f displays a message indicating that the user who images the face authentication may be asked for consent, and when the consent is obtained, the user's face is imaged. It may be.

  The control unit 1d monitors the change in the direction of the display surface 1f detected by the sensor 1b. In addition, the control unit 1d instructs the imaging unit 1c to capture an image. The control unit 1d performs face authentication based on the image captured by the imaging unit 1c. For example, the control unit 1d refers to the face authentication information 2 and performs face authentication by comparing the face information extracted from the image captured by the image capturing unit 1c with the face information registered in the face authentication information 2. . The control unit 1d displays output information 3 corresponding to the result of face authentication on the display surface 1f. If face authentication cannot be performed, dedicated information corresponding to the case where face authentication cannot be performed may be displayed. For example, the control unit 1d displays on the display surface 1f that the face authentication has failed.

  Further, the control unit 1d detects from the sensor 1b that the orientation of the display surface 1f has started to change, and hides information displayed on the display surface 1f while the orientation of the display surface 1f is changing. Also good. This is to prevent the user A from seeing information that the user A was viewing while the orientation of the display surface 1 f is changing.

  A specific processing flow will be described. For example, when the orientation of the display surface 1 f is the angle θ 1, the user A is imaged, face authentication is performed, and the user A is specified. The control unit 1d displays the display content A2 corresponding to the user A on the display surface 1f. When the display device 1e is moved to the position of the angle θ2 by the user A, the sensor 1b detects that the direction of the display surface 1f is the angle θ2. The control unit 1d that monitors the change in the direction of the display surface 1f detects that the direction of the display surface 1f has changed from the angle θ1 to the angle θ2. The control unit 1d instructs the imaging unit 1c to capture an image. The imaging unit 1c images the face of the user B. The control unit 1d refers to the face authentication information 2 and performs face authentication based on the image captured by the imaging unit 1c. The control unit 1d identifies the user B from the face information B1 of the user B. The control unit 1d refers to the output information 3 and displays the display content B2 corresponding to the user B on the display surface 1f. Then, the display content is switched from A2 to B2.

  According to the first embodiment, the orientation of the display surface 1f is detected by the sensor 1b. When the control unit 1d detects that the orientation of the display surface 1f has changed, the imaging unit 1c acquires the facial information of the user in front of the display surface 1f. Then, the face authentication is performed by the control unit 1d, and display contents corresponding to the result of the face authentication are displayed on the display surface 1f.

  Here, as an example, let us consider a case where the display content is changed without performing face authentication when the orientation of the display surface 1f changes. Any user can change the orientation of the display surface 1f. For this reason, even if the display content is changed when a user changes the direction of the display surface 1f to face his / her direction, the display content after the change should not be shown to the user. May be included.

  On the other hand, according to the first embodiment, since the display content corresponding to the user specified by the face authentication is displayed on the display surface 1f, information that should not be shown to the user who is viewing the display surface 1f. Can be prevented from being displayed on the display surface 1f. Thus, since the content displayed on the display surface 1f can be changed for each user in front of the display surface 1f, the security of information can be improved.

[Second Embodiment]
FIG. 2 illustrates an information processing apparatus according to the second embodiment. The information processing apparatus 100 is a PC in which a display 101 is integrated. The display 101 is a liquid crystal display, an organic EL (Electro Luminescence) display, or the like. The information processing apparatus 100 can tilt the display surface of the display 101 with respect to the pedestal 100a.

  In addition, the information processing apparatus 100 includes a camera 102 that captures an image in front of the display surface of the display 101. For example, the camera 102 is mounted on the outer edge of the display 101. As will be described later, the information processing apparatus 100 has a function of performing face authentication based on an image captured by the camera 102. The camera 102 may be externally attached to the information processing apparatus 100.

  FIG. 2A is a diagram in which the display 101 of the information processing apparatus 100 is in a horizontal state. In the following description, as shown in FIG. 2A, the X axis and the Y axis are taken along the horizontal plane. When the pedestal 100a and the display 101 are in a horizontal state, the long side direction of the display 101 is the X-axis direction, and the short side direction is the Y-axis direction. The vertical direction is the Z-axis direction.

  FIG. 2B is a diagram of the information processing apparatus 100 observed from the X-axis direction in the state of FIG. Between the display 101 and the pedestal 100a of the information processing apparatus 100, there is a support column 100b that supports the display 101. A connecting portion between the display 101 and the column 100b becomes a movable portion when the inclination of the display 101 changes. In addition, an inclination sensor 103 is provided at a connection portion between the display 101 and the support column 100b. The tilt sensor 103 detects the tilt of the display 101. The inclination detected by the inclination sensor 103 is a relative angle of the display 101 with respect to the pedestal 100a.

FIG. 3 is a diagram illustrating a state in which the display of the information processing apparatus is tilted. FIG. 3A is a diagram in which one long side of the display 101 is inclined downward.
FIG. 3B is a diagram illustrating a state where one long side of the display 101 is tilted downward, as observed from the X-axis direction. As shown in FIG. 3B, the display 101 is rotatable about the X axis. Hereinafter, the rotation direction about the X-axis may be referred to as “first direction”, and the rotation angle with respect to the first direction may be referred to as “first direction angle”. Note that FIG. 3A is an example of a state in which the display 101 is rotated in the first direction.

  FIG. 3C is a diagram showing a state in which one short side of the display 101 is tilted downward as observed from the Y-axis direction. As shown in FIG. 3C, the display 101 is rotatable about the Y axis. Hereinafter, the rotation direction around the Y axis may be referred to as a “second direction”, and the rotation angle with respect to the second direction may be referred to as an “angle in the second direction”.

  Here, an angle detected by the tilt sensor 103 will be described assuming that the pedestal 100a of the display 101 is placed on a horizontal plane. The tilt sensor 103 detects the angle in the first direction and the angle in the second direction.

  The angle in the first direction is detected as follows. When the display 101 is in a horizontal state (that is, parallel to the Y axis), the tilt sensor 103 determines that the angle of the display 101 in the first direction is 0 °. For example, when the display 101 is moved in the counterclockwise direction in FIG. 3B, the tilt sensor 103 determines that the angle in the first direction has changed to the plus direction. For example, when the display 101 is moved 30 ° counterclockwise in FIG. 3B from the state where the angle in the first direction is 0 °, the tilt sensor 103 sets the angle in the first direction to 30 °. to decide. On the other hand, when the display 101 is moved clockwise in FIG. 3B, the tilt sensor 103 determines that the angle in the first direction has changed to the minus direction.

  The angle in the second direction is detected as follows. When the display 101 is in a horizontal state (that is, parallel to the X axis), the tilt sensor 103 determines that the angle of the display 101 in the second direction is 0 °. Further, for example, when the display 101 is moved in the counterclockwise direction of FIG. 3C, the tilt sensor 103 determines that the angle in the second direction has changed to the plus direction. For example, when the display 101 is moved 30 ° counterclockwise in FIG. 3C from the state where the angle in the second direction is 0 °, the tilt sensor 103 sets the angle in the second direction to 30 °. to decide. On the other hand, when the display 101 is moved clockwise in FIG. 3C, the tilt sensor 103 determines that the angle in the second direction has changed to the minus direction.

  FIG. 4 is a diagram illustrating a state in which the entire information processing apparatus is rotated and the orientation of the display is changed. FIG. 4A is a diagram illustrating a state in which one of the long sides of the display 101 is in contact with the pedestal 100a of the information processing apparatus 100 and the other long side of the display 101 is in contact with a horizontal plane. As shown in FIG. 4A, the information processing apparatus 100 can be used by leaning one long side of the display 101 and the pedestal 100a so as to contact the placement surface.

  In this state, the information processing apparatus 100 may be rotated about the Z axis. In this case, the orientation of the display surface of the display 101 also rotates around the Z axis. Hereinafter, the rotation direction around the Z axis may be referred to as a “third direction”, and the rotation angle with respect to the third direction may be referred to as an “angle in the third direction”.

  FIG. 4B is a diagram of the information processing apparatus 100 observed from the X-axis direction in the state of FIG. Here, the information processing apparatus 100 includes geomagnetic sensors 104 and 104a. The geomagnetic sensors 104 and 104a detect the orientation of the display surface of the display 101 on the horizontal plane as an angle from a predetermined reference direction. The reference direction is, for example, the north direction. For example, if the Y-axis direction is parallel to the reference direction, the geomagnetic sensors 104 and 104a have the third direction when the information processing apparatus 100 rotates clockwise around the Z-axis when viewed from above. Judge that the angle has changed in the positive direction. The angle in the third direction takes a value from 0 ° to 360 °, for example. When the information processing apparatus 100 rotates 360 ° from the state of 0 °, the angle in the third direction returns to 0 °. Note that the information processing apparatus 100 includes two geomagnetic sensors 104 and 104a, but may include only one geomagnetic sensor.

  In addition to the state shown in FIG. 4, the information processing apparatus 100 leans so that one of the short sides of the display 101 is in contact with the pedestal 100 a and the other short side and the pedestal 100 a are in contact with the placement surface. Can also be used. Even in this state, the angle of the third direction of the display 101 is detected by the geomagnetic sensors 104 and 104a in the same manner as described above.

  In the following description, the direction of the display surface of the display 101 detected by the tilt sensor 103 is referred to as “the tilt of the display 101”, and the direction of the display surface of the display 101 detected by the geomagnetic sensors 104 and 104a is “the display 101 Sometimes referred to as “azimuth”.

  When the information processing apparatus 100 according to the second embodiment detects that the tilt or orientation of the display 101 has changed based on the detection results of the tilt sensor 103 or the geomagnetic sensors 104 and 104a, the information processing apparatus 100 uses the face information captured by the camera 102 as a basis. Face authentication is performed, and the display content corresponding to the face authenticated user is displayed on the display 101. Thereby, the security of the displayed information is improved.

  FIG. 5 is a diagram illustrating a hardware example of the information processing apparatus. The information processing apparatus 100 includes a processor 111, a RAM 112, a flash memory 113, a wireless unit 114, an input device 115, a medium reading unit 116, a display 101, a camera 102, a tilt sensor 103, and geomagnetic sensors 104 and 104a. Each unit is connected via a bus or an interface of the information processing apparatus 100.

  The processor 111 controls information processing of the information processing apparatus 100. The processor 111 is, for example, a CPU, DSP, ASIC, or FPGA. The processor 111 may be a multiprocessor. The processor 111 may be a combination of two or more elements such as a CPU, a DSP, an ASIC, and an FPGA.

  The RAM 112 is a main storage device of the information processing apparatus 100. The RAM 112 temporarily stores at least part of an OS (Operating System) program and application programs to be executed by the processor 111. The RAM 112 stores various data used for processing by the processor 111.

  The flash memory 113 is an auxiliary storage device of the information processing apparatus 100. The flash memory 113 stores an OS program, application programs, and various data. The flash memory 113 may be a portable recording medium that is detachable from the information processing apparatus 100.

  The wireless unit 114 is an interface that can perform wireless communication. The wireless unit 114 can access the network to which the access point 11 is connected by communicating with the access point 11. The wireless unit 114 can transmit and receive programs and data to and from other computers connected to the network. Note that the information processing apparatus 100 may include an interface that can perform wired communication instead of the wireless unit 114 or in combination with the wireless unit 114.

  The input device 115 detects an operation input by the user and outputs an input signal to the processor 111. As the input device 115, for example, a touch panel or a keypad can be used.

  The medium reading unit 116 reads a program or data from the portable recording medium 12 or writes a program or data to the recording medium 12 in accordance with an instruction from the processor 111. For example, the recording medium 12 is a card-type recording medium (memory card) that can be attached to and detached from the medium reading unit 116. The medium reading unit 116 stores the program and data read from the recording medium 12 in the RAM 112 or the flash memory 113. The medium reading unit 116 may be a driving device that reads a program or data recorded on an optical disk using a laser beam or the like.

  In that case, an optical disk can be used as the recording medium 12. As the optical disc, for example, a DVD (Digital Versatile Disc), a DVD-RAM, a CD-ROM (Compact Disc Read Only Memory), a CD-R (Recordable) / RW (ReWritable), or the like can be used. For example, the medium reading unit 116 stores the program and data read from the optical disc in the RAM 112 or the flash memory 113 (or another storage device such as an HDD) in accordance with an instruction from the processor 111, for example.

  The display 101 displays an image according to a command from the processor 111. The camera 102 captures an image and transmits image data indicating the captured image to the processor 111.

  The tilt sensor 103 detects the respective angles of the first direction and the second direction of the display 101 and transmits the detection results to the processor 111. The geomagnetic sensors 104 and 104 a detect the angle of the display 101 in the third direction, and transmit the detection result to the processor 111.

  FIG. 6 is a diagram illustrating a configuration example of functions of the information processing apparatus. The information processing apparatus 100 includes a storage unit 120, a sensor unit 130, an imaging unit 140, a monitoring unit 150, and a display control unit 160.

  The storage unit 120 is realized using a predetermined storage area of the RAM 112 or the flash memory 113. The storage unit 120 stores information used for processing of the monitoring unit 150 and the display control unit 160. The information stored in the storage unit 120 includes a user table and a display information table. In the user table, information indicating a correspondence relationship between a user who browses the display 101 and screen display contents corresponding to the user is registered. In the display information table, information displayed on the display 101 is registered. The storage unit 120 also stores time. The storage unit 120 may store time information held in the OS.

  The sensor unit 130 is realized by the tilt sensor 103 and the geomagnetic sensors 104 and 104a. The sensor unit 130 detects an angle for each of the first direction, the second direction, and the third direction of the display 101. The sensor unit 130 may include a function of calculating each angle based on detection signals transmitted from the tilt sensor 103 and the geomagnetic sensors 104 and 104a. Such a function is realized by the processor 111 executing a predetermined program, for example.

  The imaging unit 140 is realized by the camera 102. The imaging unit 140 images the front of the display 101. Thereby, the face of the user who is browsing the display 101 can be imaged.

  The processing of the monitoring unit 150 and the display control unit 160 is realized by the processor 111 executing a predetermined program. For example, the processing of the monitoring unit 150 is realized by executing a resident program (a type of application program) for monitoring changes in the tilt or orientation of the display 101. The processing of the display control unit 160 is realized by executing an information display program (a kind of application program) for displaying information registered in the display information table of the storage unit 120. Alternatively, the processes of the monitoring unit 150 and the display control unit 160 may be realized by executing the same application program.

The monitoring unit 150 monitors the tilt or azimuth of the display 101 at regular time intervals. The constant time interval is, for example, an interval of 0.2 seconds.
The monitoring unit 150 determines whether or not the tilt of the display 101 is changing based on the detection result of the angle in the first direction or the second direction by the tilt sensor 103. For example, the monitoring unit 150 determines that the change in the tilt has started when the change in the angle over a predetermined time becomes equal to or greater than a predetermined threshold. Thereafter, the monitoring unit 150 determines that the change in the inclination has ended when the angle does not change for a certain time or more.

  In addition, the monitoring unit 150 determines whether or not the orientation of the display 101 is changing based on the detection result of the angle in the third direction by the geomagnetic sensors 104 and 104a. As a procedure for determining whether or not the azimuth is changing, a procedure similar to that for determining whether or not the inclination is changing is used.

  Based on the determination by the monitoring unit 150, the display control unit 160 hides the information displayed on the display 101 during the period in which the tilt or orientation changes. Here, the displayed information is display information obtained by executing the information display program.

  In addition, when the period in which the tilt or azimuth is changed ends, the display control unit 160 determines whether the tilt or azimuth of the display 101 has changed by a threshold angle or more. When changed, the display control unit 160 instructs the imaging unit 140 to perform imaging. Here, the display control unit 160 may display on the display 101 that the face authentication may be performed before the imaging unit 140 captures an image, or that the subject to be imaged asks for consent. 140 is instructed to image. The display control unit 160 performs face authentication based on the captured information. The display control unit 160 refers to the user table and the customer table, and causes the display 101 to display display contents corresponding to the face authentication result.

  FIG. 7 is a diagram illustrating an example of a tilt / orientation management table. The tilt / orientation management table 121 is referred to and updated by the monitoring unit 150 in order to monitor the tilt and orientation of the display 101. The tilt / orientation management table 121 is stored in the storage unit 120.

  The inclination / azimuth management table 121 includes items of inclination (first direction and second direction), direction, time, inclination changing flag, direction changing flag, inclination monitoring threshold, direction monitoring threshold, and elapsed time. Including.

  In the tilt item, an angle in the first direction and an angle in the second direction of the display 101 detected by the tilt sensor 103 are registered. In the azimuth item, the angle of the third direction of the display 101 detected by the geomagnetic sensors 104 and 104a is registered. In the time item, the last update time of the angle in the tilt item or the azimuth item is registered.

  Information indicating whether or not the tilt of the display 101 is changing is registered in the item of the tilt changing flag. Information indicating whether or not the direction of the display 101 is changing is registered in the item of the direction changing flag. In both the inclination changing flag and the azimuth changing flag, “true” is registered when changing, and “false” is registered when changing.

  In the items of the tilt monitoring threshold, the azimuth monitoring threshold, and the elapsed time, values that are determined in advance before the start of processing are basically registered. The angle for determining that the tilt of the display 101 has changed is registered in the tilt monitoring threshold item. The angle for determining that the orientation of the display 101 has changed is registered in the direction monitoring threshold item. In the elapsed time item, a time for determining that the change in the tilt or orientation of the display 101 has been stopped is registered.

  FIG. 8 is a diagram illustrating an example of the display control management table. The display control management table 122 is referred to and updated by the display control unit 160 in order to control information displayed on the display 101. The display control management table 122 is stored in the storage unit 120.

  The display control management table 122 includes items of determination user, inclination (first direction and second direction), azimuth, inclination determination threshold (first direction and second direction), and direction determination threshold. .

  The user name of the user specified by face authentication last time is registered in the determination user item. In the item of tilt, the tilt of the display 101 (the angle in the first direction and the angle in the second direction) previously determined by the display control unit 160 is registered. In the azimuth item, the azimuth (angle of the third direction) of the display 101 determined last time by the display control unit 160 is registered.

In the items of the inclination determination threshold value (first direction and second direction) and the direction determination threshold value, values determined in advance before the start of the processing are basically registered.
In the tilt determination threshold value, threshold values of angles in the first direction and the second direction indicating conditions for performing face authentication are registered. In the example of FIG. 8, “30 ° or more and −30 ° or less” is registered as the inclination determination threshold value in the first direction. This indicates that face authentication is performed when the angle in the first direction is 30 ° or more or −30 ° or less. In this case, only a value of 30 ° or more or −30 ° or less is registered in the item of tilt in the first direction by the processing of the display control unit 160 described later.

  In the azimuth determination threshold item, an angle threshold value in the third direction indicating a condition for performing face authentication is registered. In the example of FIG. 8, “60 °” is registered as the orientation determination threshold. This indicates that face authentication is performed when the angle in the third direction changes by 60 ° or more.

  FIG. 9 is a diagram illustrating an example of the display information table. In the display information table 123, information displayed on the display 101 is registered. The display information table 123 is stored in the storage unit 120. The display information table 123 includes items of user, date of birth, telephone number, password, approval date, and approver.

  In the user item, the user name of the user whose information is to be displayed is registered. The date of birth of the corresponding user is registered in the date of birth item. In the telephone number field, the telephone number of the corresponding user is registered. In the password item, a password used by the user is registered. The date of approval of the registration of the item of this record is registered in the item of approval date. The name of the person who approved the registration of the item of this record is registered in the item of the approver.

  For example, in the display information table 123, information that the user is U1, the date of birth is 1980/6/14, the telephone number is Tel1, the password is PS1, the approval date is 2010/1/20, and the approver is K1 is registered. The This is because the date of birth 1980/6/14, telephone number Tel1, password PS1, approval date 2010/1/20, and approver K1 are registered as information about the user U1 displayed on the display 101. Show.

  FIG. 10 is a diagram illustrating an example of a user table. In the user table 124, information for identifying which information to be displayed on the display 101 among the information for face authentication and the information registered in the display information table 123 as a result of face authentication is registered. The user table 124 is stored in the storage unit 120. The user table 124 includes items of user, face authentication information, date of birth, telephone number, password, approval date / approver, and registration date.

  The user name of the user who views the display 101 is registered in the user item. The user registered in the user table 124 may overlap with the user registered in the display information table 123, or may be completely different. In the face authentication information item, face information for each user that is referred to during face authentication is registered.

  The items of birth date, telephone number, and password correspond to the birth date, phone number, and password items of the display information table 123, respectively. Further, the approval date / approver item corresponds to the approval date and the approver item in the display information table 123. In the items of user, date of birth, telephone number, and password, information for identifying whether or not the information registered in the corresponding item in the display information table 123 is permitted to be displayed on the display 101 is registered. The In the item of approval date / approver, information indicating whether the display of the approval date in the display information table 123 and the information registered in the item of the approver is allowed to be displayed on the display 101 is registered.

  For example, in the user table 124, the user is U1, the face authentication information is FI1, the date of birth is true, the phone number is true, the password is true, the approval date / approver is false, and the registration date is 2010/1/16. Information is registered. This indicates that the face authentication information for specifying the user U1 is FI1. Further, when the user U1 is specified by the face authentication, the date of birth, the phone number, and the password are permitted to be displayed among the items related to the user to be displayed on the display 101. The person's display is not allowed. Moreover, it shows that the date when these items were registered is 2010/1/16.

  Next, processing when the monitoring unit 150 monitors whether or not the tilt of the display 101 has changed from the angle of the display 101 detected by the tilt sensor 103 will be described. In the following FIGS. 11 and 12, it is assumed that the display 101 is rotated in the first direction.

  FIG. 11 is a flowchart illustrating an example of the monitoring process (part 1). In the following, the process illustrated in FIG. 11 will be described in order of step number. Further, for example, in the tilt item of the tilt / orientation management table 121, information that the first direction is 0 ° and the second direction is 0 ° is registered as an initial value when the monitoring unit 150 is activated for the first time. . Hereinafter, it is assumed that the inclination in the first direction is monitored.

  (Step S11) The monitoring unit 150 acquires the current inclination of the display 101 (that is, the angle in the first direction) from the sensor unit 130. In addition, the monitoring unit 150 acquires the current time from the storage unit 120.

  (Step S12) The monitoring unit 150 refers to the inclination / orientation management table 121 and determines whether or not “inclination changing flag = true”. If “inclination changing flag = true”, the process proceeds to step S17. If it is not “inclination changing flag = true”, the process proceeds to step S13.

  (Step S <b> 13) The monitoring unit 150 determines whether the current tilt of the display 101 has changed by a threshold value or more than the tilt in the first direction registered in the tilt / orientation management table 121. As the threshold value, a value registered in the tilt monitoring threshold item of the tilt / orientation management table 121 is used.

  This determination is provided in order to prevent the user from determining that the tilt of the display 101 has changed since the user generally changes the tilt of the display 101 slightly. As a result, the display is not concealed when there is a slight change in tilt, and usability is improved.

  For example, when the current inclination of the display 101 is −15 ° and the inclination registered in the inclination / orientation management table 121 is 60 °, the current display 101 starts from the inclination registered in the inclination / orientation management table 121. There was a change of 75 ° (60 ° − (− 15 °)). The monitoring unit 150 determines that the current inclination has changed by a threshold value of 5 ° or more.

If the threshold value has changed, the process proceeds to step S14. If it has not changed more than the threshold, the process is terminated.
(Step S14) The monitoring unit 150 detects that the tilt of the display 101 has started to change. Then, the monitoring unit 150 notifies the display control unit 160 that the tilt of the display 101 has started to change.

(Step S <b> 15) The monitoring unit 150 registers true in the tilt changing flag of the tilt / orientation management table 121.
(Step S <b> 16) The monitoring unit 150 registers the tilt and time of the display 101 acquired in step S <b> 11 in the tilt / orientation management table 121. Then, the process ends.

  (Step S <b> 17) The monitoring unit 150 determines whether the current inclination of the display 101 is different from the inclination registered in the inclination / orientation management table 121. If not, the process proceeds to Step S16. If they are the same, the process proceeds to step S18.

  (Step S <b> 18) The monitoring unit 150 has acquired the time acquired in Step S <b> 11 more than the elapsed time (threshold value) registered in the tilt / direction management table 121 from the time registered in the tilt / direction management table 121. Judge whether you are doing. For example, when the time acquired in step S11 is 17: 22: 11.2 and the time registered in the tilt / orientation management table 121 is 17: 22: 10.6, the monitoring unit 150 sets the threshold value to 0.5 seconds. It is determined that the above has elapsed.

If the time has exceeded the threshold, the process proceeds to step S19. If the time has not exceeded the threshold, the process ends.
(Step S <b> 19) The monitoring unit 150 registers false in the tilt changing flag of the tilt / orientation management table 121.

  (Step S20) The monitoring unit 150 detects that the change in the tilt of the display 101 has stopped. Then, the monitoring unit 150 notifies the display control unit 160 that the change in the tilt of the display 101 has stopped. Then, the process ends.

  The process of FIG. 11 described above is repeatedly executed at predetermined time intervals. As a result, the monitoring unit 150 monitors changes in the tilt of the display 101 at predetermined time intervals. The predetermined time interval is, for example, an interval of 0.2 seconds.

Next, the contents processed by the display control unit 160 when the tilt of the display 101 changes will be described.
FIG. 12 is a flowchart illustrating an example of the display control process associated with the tilt change. In the following, the process illustrated in FIG. 12 will be described in order of step number. Hereinafter, it is assumed that the inclination in the first direction has changed. Further, it is assumed that a window corresponding to the information display program (hereinafter referred to as “information display window”) is displayed on the display 101. In the information display window, for example, information on any user registered in the display information table 123 is displayed.

  (Step S <b> 31) Upon receiving notification from the monitoring unit 150 that the tilt of the display 101 has started to change, the display control unit 160 hides the display content of the information display window. This notification is output in step S14 of FIG. As a concealment method, for example, there is a method of filling the information display window with a specific color or pattern. At this time, character information such as “display switching” may be displayed in the information display window. The concealed display content is stored in the storage unit 120 (for example, the RAM 112).

  The reason for hiding the display content in step S31 is that while the tilt of the display 101 continues to change, it is not possible to determine who is viewing the display 101, and it is not possible to accurately determine displayable information. Because.

  (Step S32) The display control unit 160 determines whether the change in the tilt of the display 101 has stopped. That is, it is determined whether the display control unit 160 has received a notification from the monitoring unit 150 that the change in the tilt of the display 101 has stopped. This notification is output in step S20 of FIG. If the change in inclination stops, the process proceeds to step S33. If the change in inclination has not stopped, the process proceeds to step S32.

  (Step S <b> 33) The display control unit 160 acquires the current inclination (angle in the first direction) of the display 101 from the sensor unit 130. The display control unit 160 refers to the threshold value for tilt determination in the display control management table 122 and determines whether the current tilt of the display 101 satisfies a condition for performing face authentication such as 30 ° or more or −30 ° or less. . For example, the display control unit 160 determines that the condition is satisfied when the current inclination of the display 101 is −40 °. If the condition is satisfied, the process proceeds to step S34. If the condition is not satisfied, the process proceeds to step S39.

  (Step S <b> 34) The display control unit 160 instructs the imaging unit 140 to capture an image. The imaging unit 140 images the user's face. The display control unit 160 refers to the user table 124 and performs face authentication based on the image captured by the imaging unit 140. For example, when the image captured by the imaging unit 140 is similar to the face image FI2, the display control unit 160 identifies the user captured by the imaging unit 140 as the user U2.

  In step S34, it is desirable that the display control unit 160 displays on the display 101 a request for consent to perform face authentication before instructing the imaging unit 140 to perform imaging. The display control unit 160 instructs the imaging unit 140 to capture an image when consent is obtained by the operation of the viewer of the display 101. On the other hand, if the consent is not obtained, the display control unit 160 displays a message such as “Information cannot be displayed” on the display 101 while hiding the display content, and ends the process. In this case, the display content remains hidden, but the process of FIG. 12 is executed by changing the tilt of the display 101 again, whereby the display of information can be resumed.

  (Step S35) The display control unit 160 determines whether the determination user registered in the display control management table 122 and the user specified by face authentication are the same user. If not the same user, the process proceeds to step S36. If they are the same user, the process proceeds to step S39.

  (Step S36) The display control unit 160 identifies the concealed display content held in the storage unit 120 based on the user record identified by the face authentication in step S34 among the records in the user table 124. Change to suit the user. Thereby, only the information permitted to be displayed to the user (viewer) specified by the face authentication among the information related to the user displayed in the information display window before concealment is included in the display content. A specific example of changing the display contents will be described later.

(Step S <b> 37) The display control unit 160 registers the user ID of the user specified by the face authentication in the determination user item of the display control management table 122.
(Step S38) The display control unit 160 registers the tilt of the display 101 acquired in step S33 in the display control management table 122. This step S38 is executed only when the tilt of the display 101 satisfies the condition in step S33. For this reason, the inclination registered in the inclination / orientation management table 121 is only a value in a range (30 ° or more or −30 ° or less) that satisfies the condition in step S33.

  (Step S39) The display control unit 160 releases the concealment of the information display window, and displays the concealed display content held in the storage unit 120 on the information display window. Then, the process ends.

  In step S39, if it is determined in step S35 that the user is the same user, that is, if it is determined that the viewer of the display 101 has changed, the display content changed in step S36 is displayed in the information display window. The On the other hand, if it is determined in step S35 that the viewer has not changed, the same display content as before the concealment is displayed in the information display window.

  According to the processing of FIG. 12 described above, when it is determined in step S33 that the display 101 satisfies the condition that the inclination of the display 101 is 30 ° or more or −30 ° or less and the viewer is changed in step S35, a new one is obtained. The display in the information display window is switched so that only information permitted for the viewer is displayed. Thereby, the security of information to be displayed can be improved.

  Note that the case where it is determined in step S35 that the viewer has changed is usually a case where the tilt of the display 101 has changed greatly. Here, if the movable range in the first direction of the display 101 is within 60 ° (within ± 30 ° with respect to the horizontal plane), the condition that the inclination is 30 ° or more or −30 ° or less in step S33. The case where it is determined that the viewer has changed in step S35 is a case where the inclination of the display 101 has changed by 60 ° or more. That is, in the process of FIG. 12, when the inclination of the display 101 changes by 60 ° or more as a threshold, the display content is changed if the viewer specified by face authentication is different from the previous viewer.

  In addition, in FIG. 11 and FIG. 12, the case where the display 101 is rotated in the first direction has been described. When the display 101 is rotated in the second direction, the angle in the second direction is obtained from the sensor unit 130 instead of the angle in the first direction, and the same processing as in FIGS. Is done.

  Next, assuming that the information processing apparatus 100 is rotated in the third direction, the orientation of the display 101 changes from the angle of the third direction of the display 101 detected by the monitoring unit 150 by the geomagnetic sensors 104 and 104a. A process for monitoring whether or not it is being performed will be described.

  FIG. 13 is a flowchart illustrating an example of the monitoring process (part 2). In the following, the process illustrated in FIG. 13 will be described in order of step number. In addition, for example, information of 0 ° as an initial value is registered in the azimuth item of the tilt / orientation management table 121 when the monitoring unit 150 is activated for the first time.

  (Step S <b> 41) The monitoring unit 150 acquires the current angle of the third direction of the display 101 from the sensor unit 130. In addition, the monitoring unit 150 acquires the current time from the storage unit 120.

  (Step S <b> 42) The monitoring unit 150 refers to the tilt / orientation management table 121 and determines whether or not “azimuth changing flag = true”. If “azimuth changing flag = true”, the process proceeds to step S47. If it is not “azimuth changing flag = true”, the process proceeds to step S43.

  (Step S43) The monitoring unit 150 determines whether the current angle of the third direction of the display 101 has changed by a threshold value or more than the angle registered in the direction item of the tilt / direction management table 121. As the threshold value, a value registered in the “azimuth monitoring threshold value” field of the tilt / azimuth management table 121 is used.

  For example, when the angle of the third direction of the current display 101 is 30 ° and the angle registered in the azimuth item of the tilt / azimuth management table 121 is 0 °, the current display 101 is 30 ° (30 ° −0 °). The monitoring unit 150 determines that the current angle in the third direction has changed by a monitoring threshold of 5 ° or more.

  For example, when the azimuth of the display 101 changes from the position of the angle 270 ° to the position of the angle 0 ° with respect to the rotation direction in which the detected angle increases, the monitoring unit 150 sets 0 ° to 360 °. Calculate the difference. That is, in this case, the monitoring unit 150 obtains a difference of 360 ° -270 °, not a difference of 0 ° -270 °.

If it has changed by more than the threshold for monitoring, the process proceeds to step S44. If it has not changed more than the monitoring threshold, the process is terminated.
(Step S44) The monitoring unit 150 detects that the orientation of the display 101 has started to change. Then, the monitoring unit 150 notifies the display control unit 160 that the orientation of the display 101 has started to change.

(Step S <b> 45) The monitoring unit 150 registers true in the direction changing flag of the tilt / direction management table 121.
(Step S46) The monitoring unit 150 registers the angle and time of the third direction of the display 101 acquired in step S41 in the items of direction and time of the tilt / orientation management table 121. Then, the process ends.

  (Step S <b> 47) The monitoring unit 150 determines whether the current angle of the third direction of the display 101 is different from the angle registered in the direction item of the tilt / direction management table 121. If not, the process proceeds to Step S46. If they are the same, the process proceeds to step S48.

  (Step S <b> 48) The monitoring unit 150 has acquired the time acquired in Step S <b> 41 from the time registered in the tilt / orientation management table 121 by an elapsed time (threshold) or more registered in the tilt / orientation management table 121. Judge whether you are doing. If the time has exceeded the threshold, the process proceeds to step S49. If the time has not exceeded the threshold, the process ends.

(Step S <b> 49) The monitoring unit 150 registers false in the direction changing flag of the tilt / direction management table 121.
(Step S50) The monitoring unit 150 detects that the change in orientation of the display 101 has stopped. Then, the monitoring unit 150 notifies the display control unit 160 that the change in the orientation of the display 101 has stopped. Then, the process ends.

  The above processing of FIG. 13 is repeatedly executed at predetermined time intervals. Thereby, the monitoring unit 150 monitors the change in the orientation of the display 101 at predetermined time intervals. The predetermined time interval is, for example, an interval of 0.2 seconds.

Next, the contents processed by the display control unit 160 when the orientation of the display 101 is changed will be described.
FIG. 14 is a flowchart illustrating an example of a display control process that accompanies azimuth change. In the following, the process illustrated in FIG. 14 will be described in order of step number. It is assumed that an information display window is displayed on the display 101, and for example, information on any user registered in the display information table 123 is displayed on the information display window.

  (Step S61) Upon receiving notification from the monitoring unit 150 that the orientation of the display 101 has started to change, the display control unit 160 hides the display content of the information display window. This notification is output in step S44 of FIG. As a concealment method, the same method as in FIG. 12 can be used. The concealed display content is stored in the storage unit 120 (for example, the RAM 112).

  (Step S62) The display control unit 160 determines whether or not the change in the orientation of the display 101 has stopped. That is, it is determined whether the display control unit 160 has received a notification from the monitoring unit 150 that the change in the orientation of the display 101 has stopped. This notification is output in step S50 of FIG. If the azimuth change stops, the process proceeds to step S63. If the azimuth change has not stopped, the process proceeds to step S62.

  (Step S <b> 63) The display control unit 160 acquires the current angle in the third direction of the display 101 from the sensor unit 130. The display control unit 160 refers to the items of the azimuth and the azimuth determination threshold in the display control management table 122 and determines whether the current angle in the third direction of the display 101 has changed by more than the azimuth determination threshold. For example, when the angle of the third direction of the current display 101 is 180 ° and the angle registered in the azimuth item of the display control management table 122 is 0 °, the angle of the third direction of the current display 101 is This means that the angle has changed by 180 ° (180 ° -0 °). In this case, the display control unit 160 determines that the orientation determination threshold has changed by 60 ° or more. If it has changed from the threshold for determination, the process proceeds to step S64. If not changed from the determination threshold, the process proceeds to step S69.

  (Step S64) The display control unit 160 instructs the imaging unit 140 to capture an image. The imaging unit 140 images the user's face. The display control unit 160 refers to the user table 124, performs face authentication based on the image captured by the imaging unit 140, and identifies a user who is browsing the display 101.

  As in the case of step S34 in FIG. 12, in this step S64, the display control unit 160 also informs the display 101 that it is possible to perform face authentication before instructing the imaging unit 140 to perform imaging. It is desirable to display. The display control unit 160 instructs the imaging unit 140 to capture an image when consent is obtained by the operation of the viewer of the display 101. On the other hand, if the consent is not obtained, the display control unit 160 displays a message such as “Information cannot be displayed” on the display 101 while hiding the display content, and ends the process.

  (Step S65) The display control unit 160 determines whether the determination user registered in the display control management table 122 and the user specified by face authentication are the same user. In the case of the same user, the process proceeds to step S69. If not the same user, the process proceeds to step S66.

  (Step S66) The display control unit 160 identifies the concealed display content held in the storage unit 120 based on the user record identified by the face authentication in step S64 among the records in the user table 124. Change to suit the user. Thereby, only the information permitted to be displayed to the user (viewer) specified by the face authentication among the information related to the user displayed in the information display window before concealment is included in the display content.

(Step S <b> 67) The display control unit 160 registers the user ID of the user specified by face authentication in the determination user item of the display control management table 122.
(Step S68) The display control unit 160 registers the angle of the third direction of the display 101 acquired in step S41 in the azimuth item of the display control management table 122.

  (Step S <b> 69) The display control unit 160 releases the concealment of the information display window, and displays the concealed display content stored in the storage unit 120 on the information display window. Then, the process ends.

  According to the processing of FIG. 14 described above, when it is determined in step S63 that the orientation of the display 101 has changed by a threshold value or more, face authentication is performed in step S64. If it is determined in step S65 that the viewer has changed, the display in the information display window is switched so that only information permitted for the new viewer is displayed in step S69. Thereby, the security of information to be displayed can be improved.

  FIG. 15 is a diagram illustrating a specific example of display content change according to the second embodiment. For example, it is assumed that the user U1 and the user U2 are in symmetrical positions. The information processing apparatus 100 is installed between the user U1 and the user U2. The display 101 faces the user U1.

  Further, as an example, it is assumed that the users U1 and U2 are employees of the same company, and the information display window of the display 101 displays a scene in which information of the user U11 who is a customer is displayed. In this case, information on the user U11 registered in the display information table 123 is displayed in the information display window.

  FIG. 15A is a diagram illustrating a state in which the user U1 is imaged and face authentication is performed, and display content corresponding to the user U1 is displayed on the display 101. FIG. Here, it is assumed that “true” is registered in the items of birth date, telephone number, and password in the record of the user U1 in the user table 124. In this case, as shown in FIG. 15A, in the information display window, as the information of the user U11 registered in the display information table 123, “name: U11”, “birth date: 1980/4/14”, “Telephone number: Tel11” and “Password: PS11” are displayed. Here, it is assumed that the name is allowed to be displayed unconditionally.

  FIG. 15B is a diagram illustrating a state in which the orientation of the display 101 is changed toward the user U2 by the user U1. On the display 101, the display content in the information display window is hidden. At the same time, the display 101 displays to the user U2 a request for consent to perform face authentication. For example, an OK button may be displayed on the screen if the user agrees, or an NG button may be displayed on the screen if the user does not agree, and the presence or absence of consent may be determined by pressing any button.

When the user U2 performs an operation to agree to face authentication, the information processing apparatus 100 performs face authentication on the user U2.
FIG. 15C is a diagram illustrating a state in which display content corresponding to the user U2 is displayed on the display 101 as a result of the user U2 being specified by face authentication. Here, in the record of the user U2 in the user table 124, it is assumed that “true” is registered in each item of the date of birth and telephone number, and “false” is registered in each item of the password. In this case, in the information display window, the date of birth and the telephone number of the user U11 remain displayed, but the password is hidden.

  In this way, when the display 101 is directed toward the user U2, it is possible to prevent the display of information on items that are not preferable for the user U2. In the example of information browsing in the company as described above, for example, items that are permitted to be displayed and items that are not permitted are set in the user table 124 according to the title or department of the user who browses the information. That's fine.

  As another example, a scene where information is viewed by an employee of a company and a customer can be considered. For example, a scene where the user U1 who is an employee and the user U2 who is a customer browse the information of the user U2 registered in the display information table 123 can be considered. In this case, for example, the display content can be controlled so that information managed only within the company (for example, the approval date and the approver shown in FIG. 9) is not shown to the customer.

  FIG. 16 is a diagram illustrating an example of display content control according to the second embodiment. For example, it is assumed that the user U1 and the user U3 are in symmetrical positions. The information processing apparatus 100 is installed between the user U1 and the user U3. The display 101 faces the user U1.

  FIG. 16A is a diagram illustrating a state in which the user U1 is imaged and face authentication is performed, and display content corresponding to the user U1 is displayed on the display 101. FIG. The display content is personal information of the user U1.

  FIG. 16B is a diagram illustrating a state in which the orientation of the display 101 is changed toward the user U3 by the user U1. When the user U3 performs an operation to agree to face authentication, the information processing apparatus 100 performs face authentication on the user U3.

  FIG. 16C is a diagram illustrating a state in which face authentication has failed because the user U3 information is not registered in the user table 124 as a result of performing face authentication of the user U3. In this case, for example, the display control unit 160 may cause the display 101 to display a user registration screen for registering information in the user table 124.

  According to the second embodiment described above, the sensor unit 130 detects the tilt or orientation of the display 101. When it is detected that the tilt or azimuth of the display 101 has changed by a predetermined threshold value or more, the imaging unit 140 acquires face information of the user in front of the display 101. Then, face authentication is performed by the display control unit 160, and display content corresponding to the result of face authentication is displayed on the display 101.

  Here, as an example, let us consider a case where the display content is changed without performing face authentication when the tilt or orientation of the display 101 changes. Any user can change the tilt or orientation of the display 101. For this reason, when a user changes the orientation of the display 101 to face his / her direction, even if the display content is changed, the display content after the change includes information that should not be shown to the user. May be included.

  On the other hand, according to the second embodiment, since the display content corresponding to the user specified by the face authentication is displayed on the display 101, information that should not be shown to the user watching the display 101 is displayed. 101 can be prevented from being displayed. Thus, since the content displayed on the display 101 can be changed for each user in front of the display 101, the security of information can be improved.

  In the tilt change process and the azimuth change process, face authentication may be performed without performing the determination process as to whether or not the orientation of the display 101 has changed by a threshold value or more. That is, step S33 may not be performed in the tilt change process, and step S63 may not be performed in the direction change process.

  Further, in the tilt change process and the azimuth change process, after face authentication, the screen may be switched to a password input screen and the user may be requested to input a password. For example, the display control unit 160 performs face authentication for the user U1 and identifies the user U1. The display control unit 160 switches to the password input screen and requests the user U1 to input a password. User U1 inputs password PS1. Since the password PS1 of the user U1 registered in the display information table 123 matches the password PS1 input by the user U1, the display control unit 160 can reconfirm that the face-authenticated user is the user U1. Thus, security can be improved by requiring the user to input a password after face authentication.

[Third Embodiment]
The information processing apparatus 100 according to the second embodiment can be modified as follows. Hereinafter, the information processing apparatus according to the third embodiment will be described using the same reference numerals as those in the second embodiment.

  The information processing apparatus according to the third embodiment logs on with an individual account for each user specified by face recognition. Thereby, the display setting can be changed or the data that can be referred to can be restricted for each user who views the display 101.

  FIG. 17 is a diagram illustrating an example of a user table used in the third embodiment. The user table 124a is referred to by the display control unit 160. The user table 124a is stored in the storage unit 120. In the third embodiment, the process of the display control unit 160 is realized by executing an OS program, for example.

The user table 124a includes items of user, face authentication information, account name, password, personal information, character size, screen enlargement rate, and registration date.
The user name of the user who views the display 101 is registered in the user item. In the face authentication information item, face information for each user that is referred to during face authentication is registered. In the account name item, an account ID (Identifier) of the user at the time of logon is registered. In the password item, a password input at the time of logon is registered. Various personal information related to the user is registered in the item of personal information.

  In the character size item, information indicating the character size is registered. In the screen magnification factor item, information indicating the screen magnification factor is registered. The date of registration of the item of this record is registered in the item of registration date.

  When the tilt or azimuth of the display 101 changes by a predetermined threshold or more and the face authentication is successful, the display control unit 160 refers to the user record specified by the face authentication among the records in the user table 124a. Then, the display control unit 160 automatically performs logon account switching processing (that is, re-logon) using the specified user account name and password. For example, the display control unit 160 may display a password input screen and perform authentication by comparing the input password with a registered password.

  After switching the logon account, the display control unit 160 performs display based on the character size and screen enlargement rate registered for the identified user. In addition, the display control unit 160 can permit only the display of the personal information about the specified user, and can prohibit the display of the personal information about other users registered in the user table 124a.

  Note that the information processing of the first to third embodiments can be realized by causing a processor included in the information processing apparatus of each embodiment to execute a program. The program can be recorded on a computer-readable recording medium (for example, an optical disc, a memory device, a memory card, etc.).

  When distributing the program, for example, a portable recording medium in which the program is recorded is provided. It is also possible to store the program in a storage device of another computer and distribute the program via a network. The computer stores, for example, a program recorded on a portable recording medium or a program received from another computer in a storage device, and reads and executes the program from the storage device. However, a program read from a portable recording medium may be directly executed, or a program received from another computer via a network may be directly executed.

In addition, at least a part of the information processing described above can be realized by an electronic circuit such as a DSP, ASIC, or PLD (Programmable Logic Device).
Although the present invention has been described based on the illustrated embodiment, the present invention is not limited to this, and the configuration of each part can be replaced with any configuration having the same function. Moreover, other arbitrary structures and processes may be added to the present invention.

DESCRIPTION OF SYMBOLS 1 Information processing apparatus 1a Memory | storage part 1b Sensor 1c Image pick-up part 1d Control part 1e Display apparatus 1f Display surface 2 Face authentication information 3 Output information

Claims (7)

A sensor for detecting the orientation of the display surface of the display device;
An imaging unit for imaging the front of the display surface;
Based on the detection result by the sensor, the information displayed on the display device is concealed while the orientation of the display surface continues to change, and when the change of the orientation of the display surface is finished, the imaging unit performs face authentication based on the captured image, and a control section for controlling the content of the information to be displayed on the display device in accordance with a result of the face authentication,
An information processing apparatus comprising:   The information processing apparatus according to claim 1, wherein when the face authentication is successful, the control unit displays information permitted for the user specified by the face authentication on the display device. The control unit causes the display device to display a screen for requesting consent for imaging before the image capturing unit captures an image. When consent is obtained by an operation input, the control unit displays the image on the image capturing unit. 3. The information processing apparatus according to claim 1, wherein face authentication is performed by imaging. The sensor according to any one of claims 1 to 3, characterized in that a tilt sensor for detecting a relative rotation angle of the display surface relative to the reference direction defined on said information processing apparatus Information processing device. The sensor information processing apparatus according to any one of claims 1 to 3, characterized in that a geomagnetic sensor for detecting a rotational angle of the horizontal plane of the display surface relative to the predetermined orientation. Computer
-Out based on the detection result of the sensor for detecting the angle of the display surface of the display device, while the orientation of the display surface continues to change, to conceal the display device information that was displayed,
When the change in orientation of the display surface is completed , face authentication is performed based on an image captured by an imaging unit that captures the front of the display surface,
Depending on the result of the face authentication, controls the content of the information to be displayed on said display device,
A display control method characterized by the above. -Out based on the detection result of the sensor for detecting the angle of the display surface of the display device, while the orientation of the display surface continues to change, to conceal the display device information that was displayed,
When the change in orientation of the display surface is completed , face authentication is performed based on an image captured by an imaging unit that captures the front of the display surface,
Depending on the result of the face authentication, controls the content of the information to be displayed on said display device,
Display control program for causing computer to execute processing

Images