JP2010066555A - Content display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent leak of highly secret content information by managing the content information based on browsing time of day and time. <P>SOLUTION: Current time of day or elapsed time after a predetermine time point is recognized, and on the basis of the recognition result, available content information is recognized. Then, the available content information is displayed on a display section 104 of a content display A. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a content display device that displays content information.

  Printers and copiers are widely used in offices. For example, electronic data created and edited on a personal computer (hereinafter referred to as “PC”) can be viewed on a PC screen and output to paper from a printer. May be viewed. When electronic data created and edited on a PC is used as a conference material, a large amount of paper output from a printer or the like is output to a conference room and used for conference participants.

  However, since paper output from a printer or the like is not necessary, it is discarded, which is not preferable from the viewpoint of ecology. Therefore, there has been a demand for a method in which a user can easily carry and browse electronic data created and edited on a PC without outputting the data from a printer or the like to a paper.

  Therefore, in recent years, a technique of electronic paper that can be carried and viewed without being output on paper has been put into practical use, and may be used in offices and the like in the future. In addition, a technique for carrying a PC without a hard disk and browsing the electronic data by accessing the server from the PC when necessary is also considered.

As a technique of a display recording medium such as electronic paper, there is a technique described in Patent Document 1. The technology described in Patent Document 1 rationally controls individual document management based on user authority by changing the display mode of document images for each user using electronic paper that displays and holds document images in a rewritable manner. It is a technology to do.
JP 2006-30559 A

  By the way, when browsing electronic data using electronic paper or the like, it is necessary to consider security regarding the browsing time and time.

  For example, when electronic data is acquired from a server in an office and browsed by electronic paper or the like, there is no problem in acquiring electronic data related to work from the server and browsing freely during office hours. However, it is not necessary to freely view electronic data related to work outside working hours such as late at night. May leak. Furthermore, even if it is within working hours, for example, when electronic paper is carried outside the company to attend an outside meeting, it is possible to view electronic data related to work during the meeting time, but outside the meeting time (travel time, etc.) If electronic data related to business can be viewed, confidential information related to business may be leaked to a person outside the company.

  In addition, if electronic data related to work is stored in the electronic paper etc. from the server in the office and can be browsed for a long time, there is a possibility that the user may browse outside the office outside the working hours. There is a possibility that confidential information is inadvertently seen by other people while the information is being leaked and the confidential information is leaked.

  In the technique described in Patent Document 1, the display mode of a document image is changed for each user, but security is not considered with respect to browsing time and time, and it is not perfect in terms of confidentiality.

  Accordingly, an object of the present invention is to provide a content display device that manages content information based on browsing time, time, etc., and prevents leakage of highly confidential content information.

In order to achieve the above object, a content display device according to the present invention provides:
A holding unit that holds the content information and restriction information in which restriction of use of the content information is defined corresponding to time or a predetermined time;
A display unit for displaying the content information held by the holding unit;
An acquisition unit for acquiring at least one of time information or predetermined time information;
A control unit for controlling at least the display unit,
The controller can be used from the content information held in the holding unit based on the restriction information held in the holding unit and the time information or the predetermined time information acquired by the acquisition unit. It is characterized in that at least the display unit is controlled so as to grasp content information and display usable content information on the display unit.

  According to the content display device of the present invention, content information can be managed based on browsing time, time, etc., and leakage of highly confidential content information can be prevented.

  [Outline of Content Display Device] FIG. 1 is a schematic diagram showing a state in which a content display device and a PC are connected.

  A content display device A shown in FIG. 1 is a portable display terminal such as an electronic paper or a mobile personal computer. The content display device A stores (holds) a plurality of pieces of content information (images, sentences, etc.) therein, and the content information stored in the display unit 104 of the content display device A is displayed.

  The content information to be displayed on the display unit 104 among the content information stored in the content display device A is selected by the user through the selection unit 105.

  As shown in FIG. 1, the content display device A is set in the cradle K and charged. A PC (personal computer) is connected to the cradle K. When content information is stored in the content display device A, the content display device A is set in the cradle K, and predetermined content information is transferred from the PC to the content display device A through the screen of the PC or the display unit 104 of the content display device A. .

  Note that the content display device A may be directly connected to the PC via USB or IEEE 1394 without using the cradle K, and the content information may be transferred from the PC to the content display device A. Further, the content information may be transferred from the PC to the content display device A through a wireless LAN or BlueTooth.

  FIG. 2 is a block diagram of the content display apparatus A and shows a typical configuration. The content display device A and the PC exchange content information via the communication unit 107.

  The control unit 101 controls the operation of each unit in the content display apparatus A, and specifically includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like.

  The holding unit 102 holds content information transferred from the PC, and may be any device that can store information, such as a hard disk. The holding unit 102 also holds restriction information in which restriction on the use of content information is defined corresponding to time or an elapsed time (predetermined time) from a predetermined time point. By using this restriction information, the display unit The content information displayed on 104 is limited.

  The acquisition unit 103 acquires information about time (time information) or information about elapsed time from a predetermined time point (predetermined time information). Like the restriction information stored in the storage unit 102, the acquisition unit 103 Content information displayed on the display unit 104 is limited by using the acquired time information and the like. The time information is acquired from a predetermined server that can communicate with radio waves. The acquisition unit 103 has a built-in timer, and acquires, for example, an elapsed time from when the content display device A is turned on and an elapsed time from when the content information is displayed on the display unit 104.

  The display unit 104 displays content information that can be used in the content display device A. The display unit 104 is in a touch panel format, and writing or the like can be performed on content information displayed on the display unit 104. The display unit 104 is a known display unit such as liquid crystal, organic EL, or plasma.

  The selection unit 105 selects content information to be displayed on the display unit 104 or selects what operation is to be executed in the content display device A.

  The notification unit 106 notifies a user who uses the content display apparatus A of a predetermined warning or the like, and notifies the user through the display unit 104 or through sound.

  [Content Information Usage Restriction] The content display device A shown in FIGS. 1 and 2 is a portable display terminal. For example, in the office, content information related to work is acquired from a PC and viewed on the content display device A. There is no problem in freely browsing content information related to work during office hours. However, if content information related to work can be freely browsed outside working hours such as late at night, confidential information related to the work may be leaked to an intruder into the office, for example. Therefore, the content information that can be browsed by the content display device A is limited based on time and time. Hereinafter, this point will be described in detail.

  [Restriction on Use of Content Information Based on Time] First, an operation for grasping content information that can be used on the basis of time will be described. FIG. 3 is a flowchart showing an operation of grasping content information that can be used on the basis of time and displaying the content information on the display unit. Note that the determination steps (steps S5, S8, and S11) in FIG.

  When the power of the content display device A is turned on by the user and there is a use start request (a request indicating the start of use) (step S1), the acquisition unit 103 in the content display device A is information on the current time. Time information is acquired (step S2). The acquired time information is temporarily stored in the holding unit 102.

  When the time information is acquired in step S2, the content information that can be used at the current time and the content information that cannot be used are grasped (step S3).

  The grasp of the content information that can be used and the content information that cannot be used is executed based on the time information acquired in step S2 and the restriction information that defines the restriction on the use of the content information corresponding to the time. The restriction information is held in the holding unit 102 in the content display apparatus A, and is, for example, data table information as shown in Tables 1 and 2 below. In the present embodiment, it is assumed that 50 pieces of content information of content 1 to content 50 are held in the holding unit 102.

  In Table 1, the security level is set for each time, and is divided into three stages according to the time. For example, if the time acquired in step S2 is between 8:30 and 17:10, it is understood that all the content information of content 1 to content 50 held in the holding unit 102 is usable content information. . For example, if the time acquired in step S2 is between 7:00 and 8:30, or between 17:10 and 22:00, content that can use the contents 2 to 50 held in the holding unit 102 is available. It is understood that it is information, and it is understood that the content 1 is content information that can be partially used.

  Table 2 defines the time that can be used for each content, the time that can be partially used, and the time that cannot be used. For example, if the time acquired in step S2 is 11:00 on May 30, the content 1 held in the holding unit 102 is grasped as content information that can be used (only the time as shown in Table 2). You may also try to understand it by taking into account the date).

  When the content information that can be used and the content information that cannot be used are grasped in step S3, the usable content information is displayed on the display unit 104 in the content display device A (step S4). On the other hand, content information that cannot be used is not displayed on the display unit 104 in consideration of confidentiality. By restricting the use of content information based on time information in this way, it is possible to browse usable content information while preventing leakage of highly confidential content information.

  Although the display operation of the content information is performed on the display unit 104, the content information that cannot be used may be displayed on the display unit 104 with degraded visibility (for example, blurring characters or images). In this way, leakage of content information with high confidentiality can be similarly prevented.

  For the partially usable content information grasped by using the restriction information shown in Tables 1 and 2, for example, only the first five characters of the content information are displayed as shown in FIG. As shown in FIG. 5, only bibliographic items may be displayed, or only some information may be displayed on the display unit 104. In this way, not all the content information is browsed, but a part of the content information is effective.

  Further, when displaying the content information that can be used in step S4, only a part of the content information that can be used first is displayed, and when the user selects, the entire content information may be displayed.

  In addition, when the content information that can be used and the content information that cannot be used are grasped in step S3, only the content information that can be used may be displayed as a list, and if it is desired to browse, the content information in the list may be selected. Moreover, the content information that can be used and the content information that cannot be used are displayed as a list, and even if a request for browsing the content information that cannot be used is requested, it is not displayed, or the visibility is deteriorated. The content information that can be used and the content information that cannot be used in the list may be displayed separately, or usable time information may be displayed. Moreover, you may notify a user that it cannot browse now at the time of a browsing request.

  In step S3, the content information that can be used and the content information that cannot be used are grasped once based on the time information, and the content information that can be used in step S4 is displayed on the display unit 104 based on the result. In order to ensure confidentiality, content information that can be used by acquiring time information regularly is grasped and content information that cannot be used.

  In step S5, for example, it is determined whether or not a predetermined time has elapsed since the time information was acquired (step S2). Whether or not a predetermined time has elapsed is determined using a measurement time of a timer built in the acquisition unit 103.

  If it is determined in step S5 that the predetermined time has passed (step S5; Yes), the current time information is acquired by the acquisition unit 103 in the same manner as in step S2 (step S6), and the restriction information shown in Tables 1 and 2 is used. The content information that can be used at the current time and the content information that cannot be used are grasped (step S7).

  Then, the usable content information or the like grasped in step S7 is compared with the usable content information or the like grasped before, and it is determined whether or not to change the displayed content information (step S8).

  If it is determined in step S8 that the content information to be displayed is to be changed (step S8; Yes), the notification unit 106 notifies that the type of content information to be displayed is to be changed (step S9), and is grasped in step S7. The available content information is displayed on the display unit 104 of the content display apparatus A (step S10), and the unavailable content information is not displayed on the display unit 104 in consideration of confidentiality. In other words, even when the user is browsing the content information, if the content information being browsed is recognized as content information that cannot be used as a result of acquiring time information, that fact is notified, and the content information that can be used, The type of content information that cannot be used is changed (the condition of content information that can be used may be displayed in one corner of the display unit 104). In this way, if the notification unit 106 notifies that the content information type is to be changed, the user can continue to use the content display device A without a sense of incongruity.

  In addition, after the notification in step S9, the user selects whether or not to change the display of the content information through the selection unit 105, and the content displayed on the display unit 104 only when the display change is selected. The type of information may be changed. In this way, the user's intention can be reflected.

  When it is determined that the content information displayed in step S8 is not to be changed (step S8; No), the same usable content information as previously grasped is displayed on the display unit 104 in the content display device A and cannot be used. The content information is not displayed on the display unit 104 in consideration of confidentiality.

  Unless the power is turned off, the operations from step S5 to S10 are repeated.

  As described above, if content information that can be used and content information that cannot be used by periodically acquiring time information is grasped, leakage of highly confidential content information can be prevented continuously.

  [Restriction on Use of Content Information Based on Elapsed Time from Predetermined Time] Next, an operation for grasping content information that can be used on the basis of time elapsed from a predetermined time will be described. FIG. 6 is a flowchart showing an operation of grasping content information that can be used on the basis of the elapsed time from a predetermined time point and displaying the content information on the display unit. Note that the determination steps (steps S23, S26, and S29) in FIG.

  When the power of the content display apparatus A is turned on by the user and there is a use start request (a request indicating the start of use) (step S21), the content information held in the holding unit 102 is displayed on the display unit 104. (Step S22). In step S22, the use of content information is not restricted, and all content information held in the holding unit 102 can be displayed.

  Next, the time from the display operation in the display unit 104 is measured by a timer built in the acquisition unit 103, and it is determined whether or not a predetermined time has elapsed (step S23). The predetermined time is a predetermined time, and is a time determined for periodically restricting the use of the content information.

  If it is determined in step S23 that the predetermined time has elapsed (step S23; Yes), the acquisition unit 103 acquires the elapsed time information (predetermined time information) (step S24), and the content information that can be used based on the elapsed time information The contents information that cannot be used is grasped (step S25).

  The grasping of the usable content information and the unusable content information is executed based on the elapsed time information acquired in step S24 and the restriction information in which the use restriction of the content information is defined corresponding to the predetermined time. The restriction information is held in the holding unit 102 in the content display apparatus A, and is, for example, data table information as shown in Tables 3 and 4 below. It is assumed that 50 pieces of content information of content 1 to content 50 are held in the holding unit 102.

  In Table 3, a security level is set for each elapsed time after being displayed on the display unit 104, and is divided into three stages according to the elapsed time. For example, if the elapsed time acquired in step S24 is the time that has passed for one day since it was displayed on the display unit 104, the content information that can use all the content information of the content 1 to the content 50 held in the holding unit 102 It is grasped that it is. Further, for example, if the elapsed time acquired in step S24 is the time when five days have elapsed since it was displayed on the display unit 104, the restriction information shown in Table 3 is used, and the contents 2 to 2 held in the holding unit 102 are used. 50 is grasped as content information that can be used. Further, it is understood that the content 1 is content information that can be partially used.

  Table 4 defines an elapsed time that can be used for each content, an elapsed time that can be partially used, and an elapsed time that cannot be used. For example, if the elapsed time acquired in step S24 is a time two days after being displayed on the display unit 104, the content 1 is grasped as usable content information, but the content 2 is unusable content information. It is grasped that there is. As shown in Table 4, the content information may be deleted from the holding unit 102 after a predetermined time has elapsed.

  When the content information that can be used and the content information that can be used are grasped in step S23, it is determined whether or not to change the displayed content information (step S26).

  If it is determined in step S26 that the displayed content information is to be changed (step S26; Yes), the notification unit 106 notifies that the type of content information to be displayed is to be changed (step S27), and then grasped in step S25. The usable content information is displayed on the display unit 104 of the content display device A (step S28), and the unavailable content information is not displayed on the display unit 104 in consideration of confidentiality.

  When it is determined that the content information displayed in step S26 is not changed (step S26; No), the same usable content information as previously grasped is displayed on the display unit 104 in the content display device A and cannot be used. The content information is not displayed on the display unit 104 in consideration of confidentiality.

  Unless the power is turned off, the operations from step S23 to S28 are repeated.

  In step S23, the elapsed time after the content information is displayed on the display unit 104 is measured by a timer built in the acquisition unit 103 to determine whether a predetermined elapsed time has elapsed. Without limitation, for example, the elapsed time after the content information is held in the holding unit 102 may be measured by a timer to determine whether or not a predetermined elapsed time has passed.

  As described above, if content information that can be used and content information that cannot be used by acquiring predetermined time information periodically are grasped, leakage of content information with high confidentiality can be continuously prevented.

  In addition, this invention is not limited to the said embodiment, Even if there exists a change and addition in the range which does not deviate from the summary of this invention, it is contained in this invention.

  In the operation shown in FIG. 3, the current time information is acquired when a predetermined time has elapsed, and the content information that can be used and the content information that cannot be used are ascertained from the time information. Then, the content information that can be used and the content information that cannot be used may be grasped from the time information.

  In addition to restricting the use of content information based on time information and predetermined time information, the user information using the content display device A is also taken into consideration to grasp usable content information and unavailable content information. You may do it.

  Further, not only the content information that can be used in the content display device A is displayed on the display unit 104, but also the content information that cannot be used is allowed to be transferred to other content display devices. Transfer to the display device may be prohibited.

It is the schematic which shows the state with which the content display apparatus and PC were connected. It is a block diagram of a content display device. It is a flowchart figure which shows the operation | movement which grasps | ascertains the content information which can be utilized on the basis of time, and displays content information on a display part. It is explanatory drawing which shows the display form of the content in a content display apparatus. It is explanatory drawing which shows the display form of the content in a content display apparatus. It is a flowchart figure which shows the operation | movement which grasps | ascertains the content information which can be utilized on the basis of the elapsed time from a predetermined time, and displays content information on a display part.

Explanation of symbols

A content display device 101 control unit 102 holding unit 103 acquisition unit 104 display unit 105 selection unit 106 notification unit 107 communication unit

Claims (10)

A holding unit that holds the content information and restriction information in which restriction of use of the content information is defined corresponding to time or a predetermined time;
A display unit for displaying the content information held by the holding unit;
An acquisition unit for acquiring at least one of time information or predetermined time information;
A control unit for controlling at least the display unit,
The controller can be used from the content information held in the holding unit based on the restriction information held in the holding unit and the time information or the predetermined time information acquired by the acquisition unit. A content display apparatus that controls at least the display unit so as to grasp content information and display usable content information on the display unit. The control unit is usable from the content information held in the holding unit based on the restriction information held in the holding unit and the time information or the predetermined time information acquired by the acquisition unit. The content display apparatus according to claim 1, wherein at least the display unit is controlled so that content information that is not available is recognized and content information that cannot be used is not displayed on the display unit. The control unit is usable from the content information held in the holding unit based on the restriction information held in the holding unit and the time information or the predetermined time information acquired by the acquisition unit. The content display apparatus according to claim 1, wherein at least the display unit is controlled so as to grasp content information that is not available and to display the content information that cannot be used on the display unit with degraded visibility. The content display device according to any one of claims 1 to 3, wherein the control unit controls at least the display unit so that only a part of the usable content information is displayed on the display unit. 5. The content display device according to claim 1, wherein the control unit controls at least the display unit so that only information related to a bibliographic item among the available content information is displayed on the display unit. The content display device according to claim 1, wherein the acquisition unit acquires the time information periodically. The content display device according to claim 1, wherein the predetermined time information is information relating to an elapsed time since the content information is held in the holding unit. The content display device according to claim 1, wherein the predetermined time information is information relating to an elapsed time since the display of the content information on the display unit. The content display device according to any one of claims 1 to 8, further comprising a notification unit that notifies the fact that the type of content information displayed from the display unit is changed. The content display device according to claim 1, further comprising a selection unit that selects whether to change the type of content information displayed by the display unit.

Images