JP2011134137A - Information display device and display control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely prevent information leakage caused by peeping while suppressing reduction in the browsing property of information. <P>SOLUTION: An information display device including at least a display part and a storage part for storing display information and browsing restriction information in which a browsing restriction part in the display information is described are stored, further includes: a determination part for determining whether the browsing restriction part is included in a page to be displayed on the basis of the browsing restriction information and whether the other person other than the user of the information display device (or the other person other than a person having browsing authority to the browsing restriction part) is present in the vicinity of the information display device; and a display control part which when the browsing restriction part is included in the page to be displayed in the display of the display information on the display part and the other person (or the other person other than a person having browsing authority to the browsing restriction part) is present in the vicinity of the information display device, changes a display form to a form in which at least the browsing restriction part can not be easily viewed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an information display device and a display control program, and more particularly to an information display device used in a room in which entry / exit is managed and a display control program that operates in the information display device.

  In recent years, an increasing number of users browse documents such as documents and books using an apparatus including a display device such as an electronic paper, an electronic book, a personal computer, a PDA (Personal Digital Assistants), and a mobile phone. When browsing confidential information with limited browsing using such a device (hereinafter referred to as an information display device), if there is another person near the device, the displayed confidential information may be leaked. .

  Some of the electronic papers described above have memory properties. For example, an electronic paper having a structure in which a transparent conductive electrode is formed on the inner surfaces of a pair of transparent film substrates, and a conductive black toner and an electrically insulating white toner are sealed between the electrodes, When a voltage is applied to the black toner, the black toner moves and replaces the white toner to change the color, so that the display continues even when the power is turned off. Therefore, especially in the case of such an electronic paper, the display remains unless the display is intentionally erased, and the risk of information leakage increases.

  In order to deal with such a problem of information leakage, the following Patent Document 1 discloses that information is not displayed when the user is permitted to browse by personal authentication and the terminal is outside the viewable area. An electronic information terminal that prevents information leakage by disclosing information when taken out is disclosed.

  Further, in Patent Document 2 below, a movable visible area is provided on the display, and only one line including the part operated by the user, such as an input location, or the front and rear lines are visible. A system for reducing information leakage is disclosed.

JP 2006-53688 A Japanese Unexamined Patent Publication No. 7-175458

  As described above, Patent Document 1 proposes a method for preventing information leakage by confirming whether the user has the authority to view information when displaying confidential information. However, in this method, when the user is browsing the information using the display device, it is not considered that the information leaks when the other person peeks at the display device. There is a problem that it cannot be prevented.

  Patent Document 2 proposes a method of reducing information leakage due to peeping by limiting the display to a range where the user is operating. However, with this method, there is a problem in that the visibility of information is always reduced and the work efficiency is lowered because the display is limited even when there is no human being around and there is no risk of information leakage.

  The present invention has been made in view of the above-mentioned problems, and its main object is to provide an information display device capable of reliably preventing information leakage due to peeping while suppressing deterioration of information browsing property, and To provide a display control program.

  To achieve the above object, the present invention is an information display device comprising at least a display unit and a storage unit for storing display information and browsing restriction information in which a browsing restriction part in the display information is described. A determination unit for determining whether the page to be displayed based on the browsing restriction information includes the browsing restriction portion and whether there is another person other than the user of the information display device in the vicinity of the information display device; When displaying the display information on the display unit, if the viewing restriction part is included in the page to be displayed and there is another person in the vicinity of the information display device, at least the viewing restriction part is visually recognized. And a display control unit for changing to a difficult display form.

  The present invention is also a display control program that operates on an information display device including a display unit, and the information display device is stored in advance based on browsing restriction information in which a browsing restriction portion in the display information is described. A determination unit for determining whether the page to be displayed includes the browsing restriction portion and whether there is a person other than the user of the information display device in the vicinity of the information display device, and the display information on the display unit When the display restriction portion is included in the page to be displayed and there is another person in the vicinity of the information display device, at least the display restriction portion is changed to a display form that is difficult to view. Function as a part.

  In the present invention, the browsing restriction information defines a person who has browsing authority for each of the browsing restriction portions, and the determination unit displays the browsing on a page displayed based on the browsing restriction information. It is determined whether a restriction part is included, and whether there is a person other than a person who has a viewing authority for the browsing restriction part in the vicinity of the information display device, and the display control unit When displaying the display information, the page to be displayed is included in the browsing restriction portion, and when there is a person other than the person who has browsing authority for the browsing restriction portion in the vicinity of the information display device, It can be set as the structure which changes to the display form which is hard to visually recognize at least the said browsing restriction part.

  According to the information display device and the display control program of the present invention, it is possible to reliably prevent information leakage due to peeping while suppressing a decrease in information browsing property.

  The reason is that the information display device including the display unit displays the display information on the display unit and the determination unit that determines whether the page to be displayed includes the browsing restriction portion and whether there is another person in the vicinity of the device. In this case, when the page to be displayed includes a viewing restriction portion and there is another person in the vicinity of the device, at least a display control unit that changes the display restriction portion to a display form that is difficult to visually recognize is provided. .

  In addition, the information display device including the display unit includes a determination unit that determines whether the page to be displayed includes the browsing restriction portion and whether there is another person who does not have the browsing authority for the browsing restriction portion in the vicinity of the device. When displaying the display information on the display unit, if the page to be displayed includes a viewing restriction portion and there is another person who does not have the viewing authority for the viewing restriction portion in the vicinity of the device, at least the viewing restriction This is because it includes a display control unit that changes the display form into a display form that is difficult to visually recognize.

It is a figure which shows typically an example of the information display control system which concerns on 1st Example of this invention. It is a block diagram which shows the structure of the entrance / exit management apparatus which concerns on 1st Example of this invention. It is a block diagram which shows the structure of the information display apparatus which concerns on 1st Example of this invention. 1 is a perspective view schematically showing an example of an information display device according to a first example of the present invention. It is a perspective view which shows typically the other example of the information display apparatus which concerns on 1st Example of this invention. It is a figure which shows the information (an example of a resident list and a browsing restriction list) utilized with the information display control system which concerns on 1st Example of this invention. It is a flowchart figure which shows operation | movement of the entrance / exit management apparatus based on 1st Example of this invention. It is a flowchart figure which shows operation | movement (display control operation | movement) of the information display apparatus which concerns on 1st Example of this invention. It is a figure which shows an example (partial deletion display) of the screen displayed on the information display apparatus which concerns on 1st Example of this invention. It is a flowchart figure which shows operation | movement (warning operation | movement) of the information display apparatus which concerns on 1st Example of this invention. It is a figure which shows an example (warning display) of the screen displayed on the information display apparatus which concerns on 1st Example of this invention. It is a flowchart figure which shows operation | movement (warning and page turning control operation | movement) of the information display apparatus which concerns on 1st Example of this invention. It is a flowchart figure which shows the operation | movement (redisplay control operation | movement) of the information display apparatus which concerns on 1st Example of this invention. It is a figure which shows an example (redisplay of an erasure | elimination part) of the screen displayed on the information display apparatus which concerns on 1st Example of this invention. It is a figure which shows the information (an example of a browsing restriction list) utilized with the information display control system which concerns on 2nd Example of this invention. It is a flowchart figure which shows operation | movement (display control operation | movement) of the information display apparatus which concerns on 2nd Example of this invention. It is a flowchart figure which shows operation | movement (warning operation | movement) of the information display apparatus which concerns on 2nd Example of this invention. It is a figure which shows an example (warning display) of the screen displayed on the information display apparatus which concerns on 2nd Example of this invention. It is a flowchart figure which shows the operation | movement (warning and page turning control operation | movement) of the information display apparatus which concerns on 2nd Example of this invention.

  As shown in the background art, when viewing confidential information on an information display device, if there is another person (another who does not have the authority to view confidential information) in the vicinity of the device, the information is leaked. Resulting in. In particular, in an information display device including a memory-type display device, even if the power is turned off, the display remains on the screen, which increases the risk of information leakage.

  For such a problem of information leakage, even if the user is personally authenticated and it is confirmed whether the user has the authority to view the information, the peeping by others cannot be prevented. In addition, if the display is limited to a range where the user is operating, the display is limited even when there is no other person around, so the information browsing property is degraded.

  Therefore, in one embodiment of the present invention, in an information display device including a display device, it is determined whether a page to be displayed includes a browsing restriction portion and whether there is another person in the vicinity of the device, and the page to be displayed is displayed. When a viewing restricted portion is included and there is another person in the vicinity of the device, control is performed to change at least the viewing restricted portion to a display form that is difficult to visually recognize.

  In addition, in a display control program that operates on an information display device including a display device, whether a page to be displayed includes a browsing restriction part, and whether there is another person who does not have browsing authority for the browsing restriction part in the vicinity of the device If the page to be displayed includes a viewing restriction portion and there is another person who does not have the viewing authority for the viewing restriction portion in the vicinity of the device, at least display the viewing restriction portion so that it is difficult to view. Control to change.

  As a result, it is possible to reliably prevent information leakage due to peeping while suppressing deterioration of information browsing.

  In order to describe the above-described embodiment of the present invention in more detail, an information display device and a display control program according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram schematically showing the configuration of the information display control system of the present embodiment, FIG. 2 is a block diagram showing the configuration of an entrance / exit management device, and FIG. 3 is a block showing the configuration of the information display device. 4, 4 and 5 are perspective views showing an example of the information display device. Moreover, FIG. 6 is a figure which shows an example of a room entrant list and a browsing restriction list, and FIG. 7 is a flowchart figure which shows operation | movement of an entrance / exit management apparatus. 8, 10, 12, and 14 are flowcharts showing the operation of the information display apparatus, and FIGS. 9, 11, and 13 are examples of screens displayed on the information display apparatus.

  As shown in FIG. 1, the information display control system of the present embodiment is installed at an information display device 101 used inside a management area (for example, a room partitioned by a wall or the like) and at the entrance / exit of the management area, And a room entry / exit management device 201 that manages the person entering and leaving the room. The information display device 101 and the entrance / exit management device 201 are connected by a wired or wireless LAN (Local Area Network), Bluetooth (registered trademark), or the like. Hereinafter, a specific configuration of each apparatus will be described.

[Information Display Device 101]
The information display device 101 is a device including a display device, such as an electronic paper, an electronic book, a personal computer, a PDA, a mobile phone (see FIGS. 3 and 4), a CPU (Central Processing Unit) 102, A battery 103, an operation unit (touch panel) 104, a display unit 105, a display control unit 106, a storage unit 107, a communication unit 108, a determination unit 109, and the like are included.

  The CPU 102 executes the program read from the storage unit 107 and controls the operation of each unit.

  The battery 103 supplies power for driving each part of the information display apparatus 101.

  The operation unit 104 is a pressure-sensitive touch panel in which transparent electrodes are arranged in a grid pattern on the display unit 105. The operation unit 104 detects the XY coordinates of a force point pressed with a finger or a touch pen as a voltage value, and the detected position The signal is output to the CPU 102 as an operation signal.

  The display unit 105 is an electronic paper (EPD), liquid crystal display (LCD), or organic EL (electroluminescence) display that displays particles by moving fine particles floating in a transparent liquid by an electric field load. It consists of devices, etc., and displays various information such as characters, photos, figures, graphs, and tables.

  The display control unit 106 drives the display unit 105 and controls the display on the display unit 105 based on the determination result in the determination unit 109.

  The storage unit 107 includes a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. Various programs that operate on the CPU 102, setting information for controlling the operation of the information display device 101, a document file to be displayed, and the like. Display information, a browsing restriction list (details will be described later) described with respect to browsing restrictions on the display information, a room entrant list (details will be described later) acquired from the entrance / exit management device 201, and the like are stored.

  The communication unit 108 includes a network interface card (NIC), a modem, and the like, communicates with the entry / exit management device 201 by wired communication or wireless communication, and receives a resident list from the entry / exit management device 201.

  The determination unit 109 determines whether the page to be displayed based on the browsing restriction list includes information on which browsing is restricted (hereinafter referred to as a browsing restriction part), and the vicinity of the device based on the occupant list ( Here, it is determined whether there is another person (inside the room managed by the entry / exit management device 201).

  In FIG. 2, the display control unit 106 and the determination unit 109 are configured as hardware, but these may be configured as programs executed by the CPU 102. Further, although the operation unit 104 is a touch panel, it may be a keyboard or a mouse.

[Entry / exit management device]
The entrance / exit management device 201 is a device that authenticates the person entering and leaving the room, and controls the opening and closing of the door that partitions the inside and outside of the room according to the authentication result. As shown in FIG. The authentication unit 203, the storage unit 204, the communication unit 205, and the like.

  The CPU 202 executes the program read from the storage unit 204 and controls the operation of each unit.

  The room entry / exit person authentication unit 203 compares the information stored in the ID card or IC tag, biometric information such as fingerprints, voiceprints, and veins with the authentication information stored in the storage unit 204 to authenticate the room entry / exit person. .

  The storage unit 204 includes a ROM, a RAM, and the like. Various programs that operate on the CPU 202, setting information for controlling the operation of the entry / exit management device 201, authentication information for authenticating a person entering or leaving the room, and installation in the room Alternatively, a terminal list that specifies the information display device 101 that has been brought in, a room entry list that identifies persons who have entered the room, and the like are stored.

  The communication unit 205 includes a NIC, a modem, and the like, communicates with the information display device 101 by wireless communication or wired communication, and sends a room occupant list.

  1 to 3 are examples of the information display control system of the present embodiment, and the configuration thereof can be changed as appropriate. For example, in this embodiment, the entrance / exit management device 201 is configured to recognize the person entering and leaving the room and notify the result to the information display device 101. For example, the information display device 101 is provided with imaging means such as a camera. The image pickup unit may pick up an image of the vicinity of the apparatus and recognize a person using a known image processing technique to determine whether there is another person in the vicinity of the apparatus. In addition, the information display device 101 is provided with sound detecting means such as a microphone, and the sound detecting means detects the sound in the vicinity of the apparatus and recognizes footsteps and voices by using a known sound processing technique. It may be determined whether there is a person. In these cases, the entrance / exit management device 201 can be omitted, and the determination unit 109 of the information display device 101 can detect other people in the vicinity of the device based on the image captured by the imaging unit or the audio detected by the audio detection unit. It is possible to determine whether there is any.

  The operation of the information display control system configured as described above will be outlined.

  The entrance / exit management device 201 monitors persons entering and exiting the room, and manages the persons in the room by describing them in the room entry list. Further, the entrance / exit management device 201 periodically communicates with the information display device 101, manages the information display device 101 installed or brought into the room by describing it in the terminal list, and is on the terminal list. The occupant list is transmitted to the information display device 101.

  For example, as shown in FIG. 6A, information (name, affiliation / group, ID, etc.) of the person who entered the room is described in the room entry list. In the terminal list, information (device ID, MAC (Media Access Control) address, etc.) for specifying the information display device 101 installed or brought into the room is described. In this embodiment, since it is a question whether there is a person entering the room (that is, it is not a matter of who the person is in the room), it is not always necessary to specify the person who has entered the room, and the room entry list is not necessarily identified. May describe the number of visitors and the presence or absence of visitors.

  On the other hand, the information display apparatus 101 acquires a room occupant list from the room entrance / exit management apparatus 201. Then, it is determined whether there is another person in the room based on the acquired occupant list, and it is determined whether a page to be displayed is included in the page to be displayed based on the previously stored browsing restriction list. If the page to be displayed includes a viewing restriction part, change the display restriction part or the entire page to a display form that is difficult to view (for example, fill it with a specific color or pattern, or convert it to a background color) Or converting the image into a predetermined image or deleting the display).

  For example, as shown in FIG. 6B, the browsing restriction list describes the file name of the document file when restricting the browsing of the entire document file, and restricting the browsing of a specific page of the document file. When the file name and page number of the document file are described, and when viewing of a specific area of a specific page of the document file is restricted, the file name and page number of the document file and the coordinates of the restricted area (upper left coordinates) , Lower right coordinates) are described, and when restricting the browsing of specific words on a specific page of a document file, the file name and page number of the document file and the words whose browsing is restricted are described.

  The detailed operation of the information display control system will be described below with reference to the drawings.

  First, operation | movement of the entrance / exit management apparatus 201 is demonstrated with reference to the flowchart figure of FIG. As described above, when the information display apparatus 101 itself can determine whether there is another person in the vicinity of the apparatus, the entrance / exit management apparatus 201 is not necessary.

  When the power supply is turned on, the entry / exit management device 201 clears the occupant list and the terminal list (S101), and monitors the connection request / disconnection request from the information display device 101 and the entrants / exiters (S102).

  When there is a connection request from the information display device 101, the information display device 101 is added to the terminal list (S103), and a room attendee list is transmitted to the information display device 101 (or the number and presence / absence of people in the room are determined). Notification) (S104).

  If there is a disconnection request from the information display device 101, the information display device 101 is deleted from the terminal list (S105).

  If there is a room entry, the person is added to the room entry list (S106), and the addition of the person is notified to all information display devices 101 on the terminal list (S107). Note that only the information for specifying the added person may be notified, the updated list of occupants may be transmitted again, or the number and presence of the occupants may be notified.

  If the user leaves the room, the person is deleted from the room entrant list (S108), and the deletion of the person is notified to all the information display devices 101 on the terminal list (S109). In this case as well, only the information for identifying the deleted person may be notified, the updated list of occupants may be transmitted again, or the number and the presence / absence of occupants may be notified.

  Next, the operation of the information display apparatus 101 will be described with reference to the flowchart of FIG. 8 and the display example of FIG. It is assumed that viewing restrictions for each display information are set in advance, and the display information and the viewing restriction list are stored in the storage unit 107 in advance.

  When the information display device 101 is turned on, the information display device 101 is connected to the room entry / exit management device 201 (S201), and the room entry list (or the number and presence of people entering the room) is entered from the room entry / exit management device 201. Is stored in the storage unit 107 (S202).

  Next, the reception of the notification from the entrance / exit management device 201 and the page turning operation (for example, pressing of the page turning key) are monitored (S203), and when the notification from the entrance / exit management device 201 is received, Based on the notification, the resident list (or the number and presence of resident persons) is updated (S204).

  Next, the determination unit 109 determines whether or not a page to be displayed (next page in the case of page turning) includes a browsing restriction part based on a browsing restriction list stored in advance (S205). When the viewing restriction part is included, a person other than the user of the information display device 101 enters the room based on the list of occupants acquired from the entry / exit management device 201 (or the number or presence of occupants). Is determined (S206). If the information display device 101 includes an imaging unit or a voice detection unit, it is determined whether another person has entered the room based on the image captured by the imaging unit or the voice detected by the voice detection unit. May be.

  If the page to be displayed includes a browsing restriction portion (Yes in S205) and another person has entered the room (Yes in S206), the display control unit 106 controls the display of the page ( S207). For example, the viewing restriction part (entire page, specific area, specific word) in the page to be displayed is painted in black, painted in the same color as the background, overlaid with a predetermined pattern, or replaced with a pre-stored image Then, the display form of the browsing restriction portion is changed to a display form that is difficult to visually recognize. FIG. 9 shows an example in which a specific area in the page is painted black.

  On the other hand, if the page to be displayed has no viewing restriction portion (No in S205) or no other person has entered the room (No in S206), the display control unit 106 displays the entire page as a normal display. The form is displayed (S208).

  Then, the processes in steps S203 to S208 are repeated until an instruction to stop display is given or the power of the information display apparatus 101 is turned off.

  In this way, when the page to be displayed includes a viewing restriction portion and another person enters the vicinity of the device (in the room), the viewing restriction portion or the entire page is changed to a display form that is difficult to visually recognize. Thus, it is possible to reliably prevent information leakage due to peeping while suppressing deterioration of information browsing.

  In the flowchart of FIG. 8, when the page to be displayed includes a viewing restriction part and another person has entered the room, the display restriction part and the entire page are immediately controlled. In addition, or instead of the above display control, the user of the information display apparatus 101 can be alerted. The operation in that case will be described with reference to the flowchart of FIG. 10 and the display example of FIG.

  First, after performing the processing of S201 to S204 in FIG. 8, the determination unit 109 includes a browsing restriction portion on a page to be displayed (the next page in the case of page turning) based on a browsing restriction list stored in advance. (S211), and if the page to be displayed includes a browsing restriction portion, the list of occupants acquired from the entry / exit management device 201 (or the number or presence of occupants, or images captured by the imaging means, Based on the voice detected by the voice detection means, it is determined whether another person has entered the room (S212).

  When the page to be displayed does not include the browsing restriction portion (No in S211), or when no other person enters the room (No in S212), the display control unit 106 displays the entire page in the normal display form. (S214), and the process returns to S203 in FIG.

  On the other hand, if the page to be displayed includes a viewing restriction part (Yes in S211) and another person has entered the room (Yes in S212), the display control unit 106 displays a warning and is careful. Is aroused (S213). For example, before displaying the page, a warning is displayed to notify that there is another person in the room. If another person enters the room while the page is displayed, a warning is displayed over the page. FIG. 11 shows an example in which warning display is performed on the currently displayed page. In addition, when displaying warnings over the page, the warning display can be displayed at any location, but the parts other than the warning display are visible and there is a risk that the viewing restriction part may be peeped. The warning display is preferably displayed so as to be superimposed on the browsing restricted portion or displayed on the entire screen.

  Then, the display control unit 106 waits for an instruction for warning display (S215). When the display is instructed, the entire page is displayed in the normal display form (S217), and when the display is not instructed (display) When the control is instructed), the display restriction portion or the entire page is changed to a display form that is difficult to visually recognize (S216). Thereafter, the process returns to S203 in FIG. 8 and the same processing is repeated.

  In the flowchart of FIG. 10, when a page-restricted portion is included in the next page in the page turning, the next page is displayed by changing the view-restricted portion to a display form that is difficult to visually recognize, but the operation of the page turning itself is controlled. You can also. In that case, as shown in the flowchart of FIG. 12, after performing the processing of S221 to S224 as in FIG. 10, an instruction for warning display is waited (S225). When page turning is instructed, the display control unit 106 changes the display restriction portion to a display form that is difficult to view and displays the next page, or extracts a page that does not have a view restriction portion, as described above. The page is displayed (S226). On the other hand, when page turning is not instructed, the process returns to S203 in FIG. 8 and the same processing is repeated.

  In this way, if the page to be displayed contains a viewing restriction part and another person has entered the vicinity of the device (inside the room), a warning is displayed to draw attention and process according to the instruction. By carrying out, information leakage due to peeping can be surely prevented and user convenience can be improved.

  In the above description, it is assumed that all the browsing restriction parts in the page are displayed or not, but even if there is another person away from the device, the browsing restriction part and the entire page are completely seen. It's inconvenient that you can't. In view of this, it is possible to display the browsing restricted portion or the entire page for a specific operation. The operation in that case will be described with reference to the flowchart of FIG. 13 and the display example of FIG. Note that the flowchart of FIG. 13 shows the operation when the display is controlled in S207 of FIG. 8 and S216 of FIG.

  The information display apparatus 101 monitors screen touch (S231).

  If the screen is touched, the touched coordinates are acquired based on the signal from the touch panel (S232), and it is determined whether the touch coordinates are within the viewing restricted portion (S233).

  If the touch coordinates are within the viewing restricted portion, the portion is redisplayed (changed to a normal display form) (S234), and the redisplay state is maintained while the screen touch continues. The right side of FIG. 14 is an example of redisplay when a portion of the graph in the page is touched.

  Thereafter, the process returns to S231, and when the screen touch is released, if the viewing restricted portion is redisplayed, the viewing restricted portion is again erased (again, changed to a display form that is difficult to visually recognize) (S235).

  Here, the display of the browsing restriction portion is controlled based on the screen touch, but the display may be controlled based on pressing of a specific key instead of the screen touch. In addition, here, only the touched browsing restriction portion is redisplayed / reerasured, but all the browsing restriction portions and the entire page may be redisplayed / reerasured.

  Also, here, the viewing restriction portion is re-erased when the screen touch is released, but the method of re-displaying / re-erasing is arbitrary, for example, once the screen touch is released and then touched again, the viewing restriction portion. May be re-erased, or when the specific button is pressed, the browsing restriction portion is redisplayed, and when the specific button is pressed again or another specific button is pressed, the browsing restriction portion is re-erased. Good.

  Next, an information display device and a display control program according to the second embodiment of the present invention will be described with reference to FIGS. FIG. 15 is a diagram illustrating an example of the browsing restriction list. 16, 17 and 19 are flowcharts showing the operation of the information display device, and FIG. 18 is a diagram showing an example of a screen displayed on the information display device.

  In the first embodiment described above, when the page to be displayed includes a browsing restriction part and there is another person in the room, the display of the browsing restriction part is controlled. In the case where the person has the viewing authority for the viewing restricted portion, there is no risk of information leakage even if the display is not controlled. Therefore, in this embodiment, when the page to be displayed includes the browsing restriction part and there is another person who does not have the browsing authority for the browsing restriction part in the room, the display of the browsing restriction part is controlled. .

  In this case, the basic configuration of the information display device 101 and the entrance / exit management device 201 is the same as that of the first embodiment described above, but the entrance list created by the entrance / exit management device 201 identifies individual entrance users. Information to do is essential. Further, in the browsing restriction list stored in the storage unit 107 of the information display device 101, as shown in FIG. 15, a person (browsing permission person) who has the browsing authority for each browsing restriction part is described.

  In addition, the determination unit 109 of the information display device 101 determines whether a page to be displayed is included in the page to be displayed based on the browsing restriction list, and restricts the browsing in the room based on the browsing restriction list and the resident list. It is determined whether there is another person who does not have the viewing authority for the part, and the display control unit 106 controls the display of the display unit 105 based on the determination result of the determination unit 109.

  In addition, the information display device 101 is provided with an imaging unit such as a camera and the face image of the person permitted to browse is stored in the storage unit 107. The imaging unit captures the vicinity of the device, and a person using a known image processing technique. , It may be determined whether there is another person in the vicinity of the apparatus who does not have the browsing authority for the browsing restricted portion. In addition, the information display device 101 is provided with a voice detection means such as a microphone, and the voice print of the person who is permitted to browse is stored in the storage unit 107. The voice detection means detects the voice near the device, and uses a known voice processing technique. Then, by recognizing the voiceprint, it may be determined whether there is another person who does not have the browsing authority for the browsing restricted portion in the vicinity of the apparatus. In these cases, the entrance / exit management device 201 can be omitted.

  Hereinafter, the operation of the information display apparatus 101 will be described with reference to the flowchart of FIG. Since the operation of the entrance / exit management device 201 is the same as that of the first embodiment (FIG. 7), description thereof is omitted. Further, the redisplay / reerase operation in the information display apparatus 101 is the same as that in the first embodiment (FIG. 13), and thus the description thereof is omitted.

  When the information display device 101 is turned on, the information display device 101 is connected to the room entry / exit management device 201 (S301), acquires the room occupant list from the room entry / exit management device 201, and stores it in the storage unit 107. (S302).

  Next, the reception of the notification from the entrance / exit management device 201 and the page turning operation (for example, pressing of the page turning key) are monitored (S303), and when the notification from the entrance / exit management device 201 is received, The resident list is updated based on the notification (S304).

  Next, the determination unit 109 determines whether or not a page to be displayed (the next page in the case of page turning) includes a browsing restriction part based on a browsing restriction list stored in advance (S305). If the viewing restriction part is included, based on the viewing restriction list and the room entry list acquired from the entry / exit management device 201, is there another person who does not have the viewing authority for the viewing restriction part in the room? That is, it is determined whether or not at least one of the room entrants specified in the room occupant list does not correspond to the person permitted to browse specified in the browsing restriction list (S306). In the case where the information display device 101 includes an imaging unit and a voice detection unit, the browsing authority is given to the browsing restricted portion in the room based on the image captured by the imaging unit and the voice detected by the voice detection unit. It may be judged whether another person who does not have entered the room.

  If the page to be displayed includes a viewing restriction portion (Yes in S305) and another person who does not have the viewing authority for the viewing restriction portion enters the room (Yes in S306), the display control unit 106 controls the display of the page as shown in FIG. 9 of the first embodiment (S307). For example, the viewing restriction part (entire page, specific area, specific word) in the page to be displayed is painted in black, painted in the same color as the background, overlaid with a predetermined pattern, or replaced with a pre-stored image Then, the display form of the browsing restriction portion is changed to a display form that is difficult to visually recognize.

  On the other hand, if there is no viewing restriction portion in the display information (No in S305), or no other person who does not have the viewing authority for the viewing restriction portion enters the room (No in S306), the display control unit 106 displays the entire page in a normal display format (S308).

  Then, the processes in steps S303 to S308 are repeated until an instruction to stop display is given or the power of the information display apparatus 101 is turned off.

  In this way, when the page to be displayed includes a viewing restriction part and another person who does not have the viewing authority for the viewing restriction part enters the vicinity of the device (in the room), the viewing restriction part or the page is displayed. By changing to a display form that is difficult to visually recognize as a whole, it is possible to more surely prevent information leakage due to peeping while suppressing deterioration of information browsing.

  In the flowchart of FIG. 16, when a page to be displayed includes a viewing restriction portion and another person who does not have the viewing authority for the viewing restriction portion enters the room, the viewing restriction portion or the page is immediately displayed. Although the entire display is controlled, the user of the information display device 101 can be alerted in addition to the display control or instead of the display control. The operation in that case will be described with reference to the flowchart of FIG. 17 and the display example of FIG.

  First, after performing the processing of S301 to S304 in FIG. 16, the determination unit 109 includes a browsing restriction portion on a page to be displayed (next page in the case of page turning) based on a browsing restriction list stored in advance. (S311), and if the page to be displayed includes a browsing restriction portion, the browsing restriction list and the occupant list acquired from the entry / exit management device 201 (or the image or voice detection means captured by the imaging means) Based on the detected voice), it is determined whether or not another person who does not have the viewing authority for the viewing restricted portion has entered the room (S312).

  Display control is performed when the page to be displayed does not include the viewing restriction portion (No in S311), or no other person who does not have the viewing authority for the viewing restriction portion enters the room (No in S312). The unit 106 displays the entire page in the normal display form (S314), returns to S303 in FIG. 16, and repeats the same processing.

  On the other hand, if the page to be displayed includes a viewing restriction portion (Yes in S311) and another person who does not have the viewing authority for the viewing restriction portion enters the room (Yes in S312), the display is displayed. The control unit 106 displays a warning and calls attention (S313). For example, before displaying the page, a warning is displayed to notify that there is another person who does not have the viewing authority for the viewing restricted portion in the room. In addition, when another person who does not have the viewing authority for the viewing restricted portion enters the page while displaying the page, a warning is displayed on the page. FIG. 18 shows an example in which a warning is displayed over a displayed page. In addition, when displaying warnings over the page, the warning display can be displayed at any location, but the parts other than the warning display are visible and there is a risk that the viewing restriction part may be peeped. The warning display is preferably displayed so as to be superimposed on the browsing restricted portion or displayed on the entire screen.

  Then, the display control unit 106 waits for an instruction for warning display (S315). When the display is instructed, the entire page is displayed in a normal display form (S317), and when the display is not instructed (display) In the same manner as described above, the display restriction portion or the entire page is changed to a display form that is difficult to visually recognize (S316). Thereafter, the process returns to S303 in FIG. 16 and the same processing is repeated.

  In the flowchart of FIG. 17, when a page-restricted portion is included in the next page in the page turning, the next page is displayed by changing the view-restricted portion to a display form that is difficult to visually recognize, but the operation of the page turning itself is controlled. You can also. In that case, as shown in the flowchart of FIG. 19, after performing the processing of S321 to S324 as in FIG. 16, an instruction for warning display is waited (S325). When page turning is instructed, the display control unit 106 changes the display restriction portion to a display form that is difficult to view and displays the next page, or extracts a page that does not have a view restriction portion, as described above. The page is displayed (S326). On the other hand, when page turning is not instructed, the process returns to S303 in FIG. 16 and the same processing is repeated.

  In this way, if the page to be displayed includes a viewing restriction part and another person who does not have the viewing authority for the viewing restriction part enters the vicinity of the device (in the room), a warning is displayed. By calling attention and performing processing according to instructions, it is possible to reliably prevent information leakage due to peeping and improve user convenience.

  In the present embodiment as well, similar to the first embodiment, the redisplay / re-erase of the browsing restriction portion or the entire page may be controlled for a specific operation.

  Further, the present invention is not limited to the description of the above embodiment, and the configuration and control thereof can be appropriately changed without departing from the gist of the present invention. For example, in each of the above embodiments, the viewing restriction portion and the display method of the entire page are changed to make it difficult to visually recognize, but for example, the display unit 105 of the information display device 101 is an LCD, and the backlight device is a predetermined pixel unit. When the LED (Light Emitting Diode) group which can irradiate backlight light is comprised, you may make it difficult to visually recognize a browsing restriction part and the whole page by controlling lighting / extinction of each LED. In addition, when an optical member capable of controlling the transmittance and field of view for each region is provided on the display surface side of the display unit 105, the transmittance and field of view of each region are limited so that the viewing restricted portion and the entire page are visually recognized. It may be difficult.

  INDUSTRIAL APPLICABILITY The present invention is applicable to an information display device that displays information, and more particularly to an information display device that is used in an area where entry / exit is managed.

101 Information Display Device 102 CPU
DESCRIPTION OF SYMBOLS 103 Battery 104 Operation part 105 Display part 106 Display control part 107 Memory | storage part 108 Communication part 109 Judgment part 201 Entrance / exit management apparatus 202 CPU
203 Entering / exiting person authentication unit 204 Storage unit 205 Communication unit

Claims (14)

An information display device comprising at least a display unit and a storage unit that stores display information and browsing restriction information in which a browsing restriction part in the display information is described,
A determination unit that determines whether the browsing restriction portion is included in a page to be displayed based on the browsing restriction information, and whether there is another person other than the user of the information display device in the vicinity of the information display device;
When displaying the display information on the display unit, if the viewing restriction part is included in the page to be displayed and there is another person in the vicinity of the information display device, at least the viewing restriction part is hardly visible. An information display device comprising: a display control unit that changes to a display form. In the browsing restriction information, a person who has browsing authority for each of the browsing restriction parts is defined,
The determination unit includes the browsing-restricted portion in a page to be displayed based on the browsing-restricted information, and another person other than a person who has browsing authority for the browsing-restricted portion in the vicinity of the information display device Determine if there is
When the display control unit displays the display information on the display unit, the display restriction part is included in a page to be displayed, and the viewing authority is given to the browsing restriction part in the vicinity of the information display device. The information display device according to claim 1, wherein when there is another person other than the person who has the information, at least the browsing restriction portion is changed to a display form that is difficult to visually recognize. The vicinity of the information display device is inside the management area where the information display device is used,
2. The determination unit according to claim 1, wherein the determination unit determines whether there is another person inside the management area based on the occupant information acquired from a management device that manages entry / exit to the management area. 2. The information display device according to 2. The information display device includes an imaging unit or a voice detection unit,
2. The determination unit according to claim 1, wherein the determination unit analyzes the image captured by the imaging unit or the audio detected by the audio detection unit to determine whether there is another person in the vicinity of the information display device. 2. The information display device according to 2. The browsing restriction part can be set in at least one of file unit, page unit, region unit, word unit,
The display control unit fills with a predetermined color, overlays a predetermined pattern, replaces with a predetermined image, backlight, only the browsing restriction portion in the page to be displayed or the entire page to be displayed. 5. The information display device according to claim 1, wherein any one process of turning off the light is performed.   The display control unit monitors a specific operation, and performs control to change the display form that is difficult to visually recognize to a normal display form when the specific operation is performed. The information display device according to any one of the above.   The information display device according to claim 6, wherein the display control unit performs control to return the normal display form to the display form that is difficult to visually recognize when the specific operation is not performed.   The information display device according to claim 6, wherein when the second specific operation is performed, the display control unit performs control to return the normal display form to the display form that is difficult to visually recognize. The specific operation is a touch of a touch panel arranged on the display unit,
The information display device according to claim 6, wherein the display control unit changes the touched restricted portion to the normal display form.   The information display device according to claim 1, wherein the display control unit performs a warning display before changing to a display form in which at least the browsing restricted portion is difficult to visually recognize.   The information display device according to claim 10, wherein the display control unit displays the page in a normal display form when the display of the page is instructed after performing the warning display.   When the page turning is instructed after performing the warning display, the display control unit changes at least the browsing restricted portion to a display form that is difficult to visually recognize, and displays the next page, or the browsing restricted portion The information display device according to claim 10, wherein pages that do not include are extracted and displayed. A display control program that operates on an information display device including a display unit,
The information display device;
The page to be displayed based on the browsing restriction information in which the browsing restriction part in the display information described in advance is included, and the use of the information display device in the vicinity of the information display device A determination unit for determining whether there is another person other than the person,
When displaying the display information on the display unit, if the viewing restriction part is included in the page to be displayed and there is another person in the vicinity of the information display device, at least the viewing restriction part is hardly visible. A display control program that functions as a display control unit that changes to a display form. In the browsing restriction information, a person who has browsing authority for each of the browsing restriction parts is defined,
The determination unit includes the browsing restriction portion included in a page to be displayed based on the browsing restriction information, and another person other than a person who has browsing authority for the browsing restriction portion in the vicinity of the information display device. Determine if there is
When the display control unit displays the display information on the display unit, the page to be displayed includes the browsing restriction part, and the browsing authority is given to the browsing restriction part in the vicinity of the information display device. The display control program according to claim 13, wherein when there is another person other than the person who has the display restriction, at least the browsing restriction portion is changed to a display form that is difficult to visually recognize.

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