WO2016152367A1 - Display device, display system, display control method, and program - Google Patents

Display device, display system, display control method, and program Download PDF

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Publication number
WO2016152367A1
WO2016152367A1 PCT/JP2016/055524 JP2016055524W WO2016152367A1 WO 2016152367 A1 WO2016152367 A1 WO 2016152367A1 JP 2016055524 W JP2016055524 W JP 2016055524W WO 2016152367 A1 WO2016152367 A1 WO 2016152367A1
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Prior art keywords
display
unit
data
display device
function
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PCT/JP2016/055524
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French (fr)
Japanese (ja)
Inventor
久美子 高塚
良和 新井
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日本電気株式会社
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Publication of WO2016152367A1 publication Critical patent/WO2016152367A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators

Definitions

  • the present invention relates to a display device, a display system, a display control method, and a program.
  • Patent Document 1 discloses a technique for erasing display contents displayed on a display device when a certain time has elapsed since power supply is stopped.
  • Patent Document 2 has a usage time limit and the number of times of use for a display device used by a plurality of users, and information is leaked in a mechanism for collecting the display device when those limits are exceeded. Techniques for preventing this are disclosed. For example, as an event that requires the collection of the display device, the expiration of the usage period or the number of uses, the malfunction of the display device are detected, and when these events are detected, the display content of the display device is sent to the collection destination address It describes how to change to information and delete data from memory.
  • Patent Document 1 there is a risk of information leakage because the display of secret information continues if the circuit for erasing the display content of the display device stops operating due to dropping before the display content is erased.
  • the method of Patent Document 2 is based on the premise that the display content can be changed or the data can be deleted from the memory even after an operation failure is detected. In the event of a failure that prevents the function to be performed, there is still a risk that confidential information will remain displayed and information will be leaked.
  • an object of the present invention is to provide a display device, a display system, a display control method, and a program that solve the above-described problem.
  • the present invention provides a display unit that displays data in a non-volatile manner, a prediction unit that predicts the loss of the display rewriting function of the device itself, and changes the display of the display unit when the prediction unit predicts the loss of the function. And a screen control unit.
  • the present invention also includes the display device and a server terminal device connected to the display device, wherein the display data saving unit saves the data stored in the storage unit to the server terminal device. Also provide.
  • the present invention also provides a display control method for displaying data in a non-volatile manner on a display device, predicting the loss of the display rewriting function of the device, and changing the display when the loss of the function is predicted.
  • the present invention also causes a computer of a display device that displays data in a non-volatile manner to function as means for predicting the loss of the display rewriting function of the device itself, and means for changing the display when the loss of the function is predicted. It is a program for.
  • the present invention it is possible to predict the occurrence of a failure that makes it impossible to change the display content of the display device, and to erase the display.
  • FIG. 1 is a diagram showing a minimum configuration of a display device according to an embodiment of the present invention.
  • the display device 10 of the present invention includes at least a display unit 11, a prediction unit 13, and a screen control unit 14.
  • the display unit 11 displays data in a nonvolatile manner. “Non-volatile display” means that after a certain display data is displayed, the display data is continuously displayed even after power supply is stopped.
  • the display unit 11 is, for example, an electrophoretic display.
  • An electrophoretic display is a display medium that consumes power only when data is rewritten, and display data remains even when the power is turned off.
  • the display unit 11 can input data with a dedicated pen, for example.
  • the prediction unit 13 predicts the loss of the display rewriting function of the display device 10. As described above, once data is displayed on the display unit 11, the display remains unless the screen control unit 14 described below rewrites the display data. The prediction unit 13 predicts the loss of the display data rewriting function by the screen control unit 14. The loss of the rewriting function occurs, for example, when a strong impact due to dropping or the like is applied to the display device 10, a strong force that deforms the casing is applied, or a malfunction occurs due to deterioration in a circuit that performs screen control. The prediction unit 13 detects acceleration applied to the display device 10, deformation (distortion), and circuit malfunction, and predicts the loss of the display rewriting function based on the detection result.
  • the screen control unit 14 controls display contents displayed on the display unit 11.
  • the screen control unit 14 displays data desired by the user on the display unit 11 or erases the data displayed on the display unit 11.
  • the data desired by the user is, for example, data stored in the storage unit 12 described later or data input to the display unit 11.
  • the screen control unit 14 changes (erases) the display of the display unit 11 when the prediction unit 13 predicts the loss of the display rewriting function.
  • FIG. 2 is a diagram showing an example of a display system in an embodiment according to the present invention.
  • the display system includes a display device 10 and a data management device 20.
  • the data management device 20 is connected to one or a plurality of display devices 10 via a network (NW).
  • the display device 10 includes a display unit 11, a storage unit 12, a prediction unit 13, a screen control unit 14, a display data saving unit 15, a display data acquisition unit 16, a communication unit 17, a detection sensor 18, A display rewriting instruction unit 19.
  • the display unit 11, the prediction unit 13, and the screen control unit 14 are as described with reference to FIG.
  • the storage unit 12 stores data to be displayed on the display unit 11.
  • the display data saving unit 15 saves the data by transmitting the data stored in the storage unit 12 to the data management device 20 (backs up the data).
  • the display data acquisition unit 16 acquires data to be displayed on the display unit 11 from the data management device 20, and writes and stores the data in the storage unit 12.
  • the communication unit 17 communicates with the data management device 20.
  • the detection sensor 18 is a sensor that detects information for determining the loss of the display rewriting function.
  • the display rewriting instruction unit 19 issues a display rewriting command to the screen control unit 14. For example, when the user performs an operation to instruct display of certain data on the display device 10, the display rewriting instruction unit 19 instructs the screen control unit 14 to display data instructed by the user.
  • the data management device 20 includes an authentication unit 21, a display data distribution unit 22, a storage unit 23, and a communication unit 24.
  • the authentication unit 21 authenticates the display device 10 when there is a connection request from the display device 10.
  • the display data distribution unit 22 selects data to be distributed to the display device 10 when there is a data request from the display device 10. Further, the display data distribution unit 22 acquires saved data from the display device 10 when there is a data save request from the display device 10.
  • the storage unit 23 stores data to be distributed to the display device 10. Further, the save data acquired by the display data distribution unit 22 is stored.
  • the communication unit 24 communicates with the display device 10.
  • the data management device 20 manages data (contents and the like) displayed on the display device 10 for each display device 10.
  • the display device 10 acquires data from the data management device 20 in accordance with a user operation and displays the data on the display unit 11. Further, when the data displayed on the display unit 11 is changed by the user, the display device 10 transmits the changed data to the data management device 20 to take a backup.
  • the data displayed on the display device 10 includes secret information. Since the display unit 11 has a property that display data remains even when power supply is stopped, unless the user intentionally deletes the data, the display unit 11 remains in a state where confidential information is displayed. There is a risk that information will be leaked. Even if the user succeeds in erasing the display on the display unit 11, secret information is stored in the storage unit 12. Therefore, since the secret information stored in the storage unit 12 may be stolen when the entire display device 10 is stolen, the user must erase the secret information stored in the storage unit 12. For such information leakage risk, for example, when a certain period of time elapses after data is displayed, it is considered to perform control to delete the data displayed on the display unit 11 and delete the data stored in the storage unit 12. It is done. However, with such control alone, for example, when the display device 10 is dropped and broken down, the circuit that executes the control is damaged, and the display of the secret information remains on the display unit 11. Or the secret information may remain in the storage unit 12.
  • FIG. 3 is a schematic view of a display device according to an embodiment of the present invention.
  • the display device 10 includes strain sensors 18A to 18D and an acceleration sensor 18E.
  • the display device 10 includes one or a plurality of energization sensors (not shown) that perform energization check of a control circuit that displays data on the display unit 11.
  • the strain sensor 18 ⁇ / b> A is disposed along the upper edge of the display unit 11
  • the strain sensor 18 ⁇ / b> B is disposed along the right edge of the display unit 11.
  • the sensor 18 ⁇ / b> C is disposed along the lower edge of the display unit 11, and the strain sensor 18 ⁇ / b> D is disposed along the left edge of the display unit 11.
  • the prediction unit 13 predicts that deformation of the housing such as bending that leads to loss of the display rewriting function will occur when the amount of distortion of the display device 10 detected by the strain sensors 18A to 18D exceeds a predetermined threshold.
  • the acceleration sensor 18 ⁇ / b> E is disposed at an arbitrary position of the display device 10 and detects an acceleration related to the movement of the display device 10. When the acceleration detected by the acceleration sensor 18E exceeds a predetermined threshold, the prediction unit 13 predicts that an impact leading to the loss of the display rewriting function will occur.
  • an energization sensor (not shown) detects the voltage of the circuit in a state where a current flows through the control circuit. The predicting unit 13 predicts that when the voltage detected by the energization sensor is out of a predetermined range, a malfunction of the circuit leading to the loss of the display rewriting function will occur.
  • FIG. 4 is a diagram showing an example of a display erasure processing flow in one embodiment according to the present invention.
  • a process in which the prediction unit 13 predicts the loss of the display rewriting function and the screen control unit 14 erases or changes the display on the display unit 11 will be described with reference to FIG.
  • the display device 10 downloads display data from the data management device 20 (step S11).
  • the display data acquisition unit 16 requests the data management device 20 for display data to be displayed on the display unit 11 specified by the user by an operation of the user.
  • the communication unit 17 transmits the identification information of the requested display data, and authentication information such as an ID and a password to the data management device 20.
  • the communication unit 24 receives the display data identification information and authentication information, and outputs the display data identification information and authentication information to the authentication unit 21.
  • the authentication unit 21 authenticates the authentication information received from the display device 10 as to whether or not the user can download the display data. When the authentication fails, the communication unit 24 notifies the display device 10 of the authentication failure. When the authentication is successful, the authentication unit 21 outputs the display data identification information to the display data distribution unit 22.
  • the display data distribution unit 22 reads the display data indicated by the identification information from the storage unit 23 and transmits it to the display device 10 via the communication unit 24. In the display device 10, the display data acquisition unit 16 writes the display data acquired via the communication unit 17 in the storage unit 12.
  • the display rewriting instruction unit 19 instructs the screen control unit 14 to display the display data designated by the user.
  • the screen control unit 14 reads the display data designated by the user from the storage unit 12 and displays it on the display unit 11 (step S12).
  • the display rewriting instruction unit 19 thereafter instructs the screen control unit 14 to rewrite the display such as page turning based on the user's operation.
  • the screen control unit 14 rewrites the display in response to an instruction from the display rewriting instruction unit 19.
  • the screen control unit 14 also writes the input data input to the display unit 11 by the user in the storage unit 12 in association with the display data.
  • the prediction unit 13 checks the distortion amount of the display device 10, the acceleration of the display device 10, and the energization check of the display control circuit from the detection sensor 18. A voltage value or the like is acquired, and the loss of the display rewriting function is predicted (step S13). For example, the prediction unit 13 erases the display on the display unit 11 or rewrites the display content when the display device 10 is further deformed when the strain amount acquired from the strain sensors 18A to 18D exceeds a predetermined threshold. The circuit that provides the function is expected to fail.
  • the position where the circuit providing the display rewriting function is arranged and the position of the distortion detected by the distortion sensors 18A to 18D are compared, and the position where the distortion is detected is in the vicinity of the circuit.
  • loss of the display rewriting function may be predicted.
  • a distortion in a certain direction occurs near the position where the circuit that provides the display rewriting function is arranged (for example, when a twist is added) and the amount of distortion exceeds a predetermined threshold, it is displayed. Loss of the rewriting function may be predicted.
  • the prediction unit 13 when the acceleration acquired from the acceleration sensor 18E or the speed calculated based on the acceleration exceeds a predetermined threshold, the prediction unit 13 applies an impact to the display device 10 and erases the display on the display unit 11. Or a circuit that provides a function of rewriting display contents is predicted to fail. For example, when the display device 10 falls and collides with the ground, the storage unit 12 stores the threshold of the falling speed when the circuit that provides the display rewriting function fails, and the prediction unit 13 receives the acceleration sensor 18E from the acceleration sensor 18E. It may be determined that the display device 10 is falling from the acquired acceleration for a predetermined time, and if the dropping speed at that time exceeds the threshold value, the display rewriting function is lost.
  • the prediction unit 13 displays the display on the display unit 11 when the voltage value acquired from the energization sensor is not within a predetermined range for a predetermined circuit (for example, the above-described control circuit) included in the display device 10.
  • a predetermined circuit for example, the above-described control circuit
  • the prediction part 13 estimates the loss of a display rewriting function based on the performance which the screen control part 14 actually performs a display rewriting process.
  • the prediction unit 13 monitors the time from when the display rewriting instruction unit 19 gives a display rewriting instruction to the screen control unit 14 until the screen control unit 14 rewrites the display.
  • the prediction unit 13 rewrites the display content. Expect to lose function.
  • the display rewriting instruction unit 19 instructs the screen control unit 14 to rewrite the display, and the ratio that the screen control unit 14 actually performs the display rewriting process (instructed 10 times, but in practice the display rewriting process is performed only 5 times.
  • the prediction unit 13 predicts that the function of rewriting the display content is lost.
  • the prediction unit 13 loses the function of rewriting the display contents. Predict.
  • the display rewriting instruction unit 19 gives a display rewriting instruction to the screen control unit 14, an error is returned from the screen control unit 14 and the screen control unit 14 does not receive the instruction. For example, when the number of times an error is returned exceeds a predetermined threshold, the prediction unit 13 predicts that the function of rewriting the display content is lost.
  • the prediction unit 13 predicts that the function of rewriting the display content is lost.
  • step S13 When the prediction unit 13 does not predict the loss of the display rewriting function (step S13; No), the processing from step S12 is repeated.
  • the prediction unit 13 predicts the loss of the display rewriting function (step S13; Yes)
  • the prediction unit 13 outputs a signal instructing to stop the display to the screen control unit 14.
  • the screen control unit 14 erases the display on the display unit 11 (step S14).
  • the screen control unit 14 rewrites the data displayed on the display unit 11 with other data having no confidentiality.
  • the display data saving unit 15 stores the data (update data) recorded in association with the display data added or changed by the user with respect to the display data before being erased or rewritten in step S14. Is uploaded to the data management device 20 via the communication unit 17 (step S15). Specifically, the display data saving unit 15 requests the data management apparatus 20 to back up the update data.
  • the communication unit 17 transmits identification information of display data in which update data exists, update data, and authentication information such as an ID and a password to the data management apparatus 20.
  • the communication unit 24 receives display data identification information, update data, and authentication information, and outputs the display data identification information and authentication information to the authentication unit 21.
  • the authentication unit 21 authenticates the authentication information received from the display device 10.
  • the communication unit 24 notifies the display device 10 of the authentication failure.
  • the authentication unit 21 outputs the display data identification information, update data, and authentication information to the display data distribution unit 22.
  • the display data distribution unit 22 writes the update data in the storage unit 23 in association with the identification information, authentication information, and current time of the display data.
  • step S16 When the display data saving unit 15 transmits update data or the like to the data management device 20 via the communication unit 17, the screen control unit 14 stores the update data written in association with the display data and the display data from the storage unit 12. Delete (step S16).
  • the display device 10 it is predicted that a situation will occur in which the display device 10 cannot be erased due to failure or destruction, and the secret information displayed on the display unit 11 is erased, or the storage unit 12 stores the information. Secret information to be deleted.
  • the display device 10 breaks down or is destroyed before the display is erased in a display device having an information leakage prevention function that can erase secret information when the power is turned off or when browsing confidential information is terminated. It is possible to prevent the risk that the display remains on the screen.
  • storage part 12 is deleted in that case, it can prevent taking out secret information from the display apparatus 10 which the third party failed.
  • the case where the display data (content) displayed on the display unit 11 is deleted or the data in the storage unit 12 is deleted has been described as an example. Only when the display data displayed in 11 is confidential information, display erasure / rewriting and data deletion from the storage unit 12 may be performed.
  • the storage unit 12 stores the identification information of the display data, the classification flag that classifies whether the information is secret information, and the display data in association with each other, and the prediction unit 13 sets the value of the classification flag. Only when the display data indicates that it is secret information, the processing after step S13 may be performed.
  • the display data currently displayed on the display unit 11 is not secret information, but the storage unit 12 also stores other display data. If the secret information is included in the display data, only the secret information is stored. May be deleted from the storage unit 12. In that case, the prediction unit 13 may check the value of the division flag for all the contents stored in the storage unit 12, and may perform the processing after step S13 only when secret information is included. . In this way, for example, when a person who wants to obtain confidential information steals the display device 10 and tries to obtain confidential information by taking out the storage unit 12 by destroying other than the storage unit 12. Can reduce the risk.
  • FIG. 5 is a diagram showing an example of a display data recovery processing flow in an embodiment according to the present invention.
  • the display data recovery process will be described with reference to FIG.
  • the prediction unit 13 predicts that the display rewriting function of the display device 10 is lost, but it is assumed that the display device 10 does not actually lose the display rewriting function.
  • the process described with reference to FIG. 5 is a process necessary for the user to continuously browse the display data deleted by the prediction of the prediction unit 13 on the display device 10.
  • the display data acquisition part 16 requests
  • the communication unit 17 transmits the identification information and authentication information of the requested display data to the data management device 20.
  • the authentication unit 21 acquires identification information and authentication information of display data via the communication unit 24, and authenticates whether or not the user can download the display data (step S22).
  • the communication unit 24 notifies the display device 10 of the authentication failure. If the authentication is successful, the authentication unit 21 outputs display data identification information to the display data distribution unit 22.
  • the display data distribution unit 22 reads the display data indicated by the identification information and the update data associated with the identification information from the storage unit 23 and transmits them to the display device 10 via the communication unit 24.
  • the display data acquisition unit 16 acquires display data corresponding to the user information via the communication unit 17 (step S23), and writes the acquired display data and the like in the storage unit 12.
  • the screen control unit 14 reads the display data requested from the storage unit 12 to the data management device 20 and displays it on the display unit 11 (step S24).
  • the user can acquire the backup of display data from the data management apparatus 20, and can browse the display data before deletion.
  • the prediction unit 13 predicts that the display rewriting function of the display device 10 is lost, and the display device 10 actually loses the display rewriting function, the user obtains a new display device 10 and displays the display rewriting function.
  • a backup of the display data can be acquired from the data management device 20.
  • Each process in the display device 10 described above is stored in a computer-readable recording medium in the form of a program, and the program is read and executed by the computer of the display device 10 to execute the above-described processing.
  • the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like.
  • the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.
  • the program may be for realizing a part of the functions described above. Furthermore, what can implement
  • the data management device 20 is an example of a server terminal device.
  • the present invention it is possible to predict the occurrence of a failure that makes it impossible to change the display content of the display device, and to erase the display.

Abstract

Provided is a display device that comprises: a display unit for displaying data in a nonvolatile manner; a prediction unit for predicting the loss of display rewriting function in the device in which the prediction unit is installed; and a screen control unit for changing what is presented on the display unit when the prediction unit predicts the loss of the display rewriting function. Also provided is a display system that includes the display device and a server terminal device connected to the display device and wherein a display data backup unit saves the data stored in a storage unit in the server terminal device.

Description

表示装置、表示システム、表示制御方法及びプログラムDisplay device, display system, display control method, and program
　本発明は、表示装置、表示システム、表示制御方法及びプログラムに関する。 The present invention relates to a display device, a display system, a display control method, and a program.
　電子ペーパー等を用いた表示装置の場合、電源をオフにしても一旦表示したデータを表示させたままにすることができる。このような表示装置に秘密情報を表示すると電源オフ後も秘密情報の表示が残るため、情報流出のリスクがある。この問題に対し、例えば、特許文献１には、給電の停止から一定時間が経過すると表示装置に表示された表示内容を消去する技術が開示されている。 In the case of a display device using electronic paper or the like, the data once displayed can be kept displayed even when the power is turned off. If secret information is displayed on such a display device, the secret information remains displayed even after the power is turned off, and there is a risk of information leakage. To deal with this problem, for example, Patent Document 1 discloses a technique for erasing display contents displayed on a display device when a certain time has elapsed since power supply is stopped.
　また、特許文献２には、複数のユーザで使用する表示装置に利用期限や利用回数が定められていて、それらの制限を超えた場合にその表示装置を回収する仕組みの中で、情報流出を防ぐための技術が開示されている。例えば、表示装置の回収が必要になるイベントとして、利用期限や利用回数への到達、表示装置の動作不良を検出し、それらのイベントが検出されると、表示装置の表示内容を回収先の宛先情報に変更し、メモリからデータを削除する方法が記載されている。 Further, Patent Document 2 has a usage time limit and the number of times of use for a display device used by a plurality of users, and information is leaked in a mechanism for collecting the display device when those limits are exceeded. Techniques for preventing this are disclosed. For example, as an event that requires the collection of the display device, the expiration of the usage period or the number of uses, the malfunction of the display device are detected, and when these events are detected, the display content of the display device is sent to the collection destination address It describes how to change to information and delete data from memory.
特開２００４－６９９６５号公報JP 2004-69965 A 特開２０１２－３２９２６号公報JP 2012-32926 A
　しかし、特許文献１の方法では、表示内容を消去する前に落下などで表示装置の表示内容を消去する回路が動作しなくなった場合、秘密情報の表示が継続するため、情報流出のリスクがある。
　また、特許文献２の方法は、動作不良を検出した後であっても、表示内容の変更やメモリからのデータ削除が可能であることを前提としており、落下による衝撃で表示内容の変更などを行う機能が発揮できなくなるような故障が生じた場合には、やはり、秘密情報の表示が残り、情報が流出するリスクがあった。 However, in the method of Patent Document 1, there is a risk of information leakage because the display of secret information continues if the circuit for erasing the display content of the display device stops operating due to dropping before the display content is erased. .
In addition, the method of Patent Document 2 is based on the premise that the display content can be changed or the data can be deleted from the memory even after an operation failure is detected. In the event of a failure that prevents the function to be performed, there is still a risk that confidential information will remain displayed and information will be leaked.
　そこで本発明は、上述した解題を解決する表示装置、表示システム、表示制御方法及びプログラムを提供することを目的としている。 Therefore, an object of the present invention is to provide a display device, a display system, a display control method, and a program that solve the above-described problem.
　本発明は、データを不揮発的に表示する表示部と、自装置の表示書き換え機能の喪失を予測する予測部と、前記予測部が前記機能の喪失を予測した場合、前記表示部の表示を変更する画面制御部と、を備える表示装置を提供する。 The present invention provides a display unit that displays data in a non-volatile manner, a prediction unit that predicts the loss of the display rewriting function of the device itself, and changes the display of the display unit when the prediction unit predicts the loss of the function. And a screen control unit.
　本発明はまた、上記表示装置と、当該表示装置と接続されたサーバ端末装置と　を備え、前記表示データ退避部は、前記記憶部に記憶された当該データを前記サーバ端末装置に退避する表示システムも提供する。 The present invention also includes the display device and a server terminal device connected to the display device, wherein the display data saving unit saves the data stored in the storage unit to the server terminal device. Also provide.
　本発明はまた、表示装置にデータを不揮発的に表示し、当該装置の表示書き換え機能の喪失を予測し、前記機能の喪失を予測した場合、前記表示を変更する表示制御方法も提供する。 The present invention also provides a display control method for displaying data in a non-volatile manner on a display device, predicting the loss of the display rewriting function of the device, and changing the display when the loss of the function is predicted.
　本発明はまた、データを不揮発的に表示する表示装置のコンピュータを、自装置の表示書き換え機能の喪失を予測する手段、前記機能の喪失を予測した場合、前記表示を変更する手段、として機能させるためのプログラムである。 The present invention also causes a computer of a display device that displays data in a non-volatile manner to function as means for predicting the loss of the display rewriting function of the device itself, and means for changing the display when the loss of the function is predicted. It is a program for.
　本発明によれば、表示装置の表示内容が変更できなくなるような故障の発生を予測し、表示を消去することができる。 According to the present invention, it is possible to predict the occurrence of a failure that makes it impossible to change the display content of the display device, and to erase the display.
本発明に係る一実施形態における表示装置の最小構成を示す図である。It is a figure which shows the minimum structure of the display apparatus in one Embodiment which concerns on this invention. 本発明に係る一実施形態における表示システムの一例を示す図である。It is a figure which shows an example of the display system in one Embodiment which concerns on this invention. 本発明に係る一実施形態における表示装置の概略図である。It is the schematic of the display apparatus in one Embodiment which concerns on this invention. 本発明に係る一実施形態における表示消去処理フローの一例を示す図である。It is a figure which shows an example of the display deletion processing flow in one Embodiment which concerns on this invention. 本発明に係る一実施形態における表示データリカバリー処理フローの一例を示す図である。It is a figure which shows an example of the display data recovery process flow in one Embodiment which concerns on this invention.
　以下、本発明の表示装置を、図１～図５を参照して説明する。
　図１は、本発明に係る一実施形態における表示装置の最小構成を示す図である。
　本発明の表示装置１０は、図１に示すように、少なくとも表示部１１と、予測部１３と、画面制御部１４と、を備える。
　表示部１１は、データを不揮発的に表示する。不揮発的に表示とは、ある表示データを表示させた後、給電を停止した後もその表示データを表示し続けることをいう。表示部１１は、例えば、電気泳動ディスプレイである。電気泳動ディスプレイは、データの書き換え時のみ電力を消費し、電源を停止しても表示データが残る表示媒体である。また、表示部１１は、例えば、専用ペンによるデータ入力が可能である。 The display device of the present invention will be described below with reference to FIGS.
FIG. 1 is a diagram showing a minimum configuration of a display device according to an embodiment of the present invention.
As shown in FIG. 1, the display device 10 of the present invention includes at least a display unit 11, a prediction unit 13, and a screen control unit 14.
The display unit 11 displays data in a nonvolatile manner. “Non-volatile display” means that after a certain display data is displayed, the display data is continuously displayed even after power supply is stopped. The display unit 11 is, for example, an electrophoretic display. An electrophoretic display is a display medium that consumes power only when data is rewritten, and display data remains even when the power is turned off. The display unit 11 can input data with a dedicated pen, for example.
　予測部１３は、表示装置１０の表示書き換え機能の喪失を予測する。上述のとおり、表示部１１に一旦、データの表示を行うと、次に説明する画面制御部１４が表示データの書き換えを行わない限り、その表示が残る性質を有している。
　予測部１３は、画面制御部１４による表示データの書き換え機能の喪失を予測する。書き換え機能の喪失は、例えば、表示装置１０に落下などによる強い衝撃が加わったり、筐体を変形させる強い力が加わったり、画面制御を行う回路に劣化などによる不具合が生じた場合に起こる。
　予測部１３は、表示装置１０に加わる加速度、変形（歪）、回路の動作不良を検出し、その検出結果に基づいて表示書き換え機能の喪失を予測する。 The prediction unit 13 predicts the loss of the display rewriting function of the display device 10. As described above, once data is displayed on the display unit 11, the display remains unless the screen control unit 14 described below rewrites the display data.
The prediction unit 13 predicts the loss of the display data rewriting function by the screen control unit 14. The loss of the rewriting function occurs, for example, when a strong impact due to dropping or the like is applied to the display device 10, a strong force that deforms the casing is applied, or a malfunction occurs due to deterioration in a circuit that performs screen control.
The prediction unit 13 detects acceleration applied to the display device 10, deformation (distortion), and circuit malfunction, and predicts the loss of the display rewriting function based on the detection result.
　画面制御部１４は、表示部１１に表示される表示内容を制御する。例えば、画面制御部１４は、表示部１１にユーザが所望するデータを表示したり、表示部１１に表示されたデータを消去したりする。
　ユーザが所望するデータとは、例えば、後述する記憶部１２が記憶するデータ、または、表示部１１に対して入力されたデータである。特に、本実施形態においては、画面制御部１４は、予測部１３が表示書き換え機能の喪失を予測した場合、表示部１１の表示を変更（消去）する。 The screen control unit 14 controls display contents displayed on the display unit 11. For example, the screen control unit 14 displays data desired by the user on the display unit 11 or erases the data displayed on the display unit 11.
The data desired by the user is, for example, data stored in the storage unit 12 described later or data input to the display unit 11. In particular, in the present embodiment, the screen control unit 14 changes (erases) the display of the display unit 11 when the prediction unit 13 predicts the loss of the display rewriting function.
　図２は、本発明に係る一実施形態における表示システムの一例を示す図である。
　図２に示す通り、表示システムは、表示装置１０と、データ管理装置２０とを含んで構成される。データ管理装置２０は、１台または複数台の表示装置１０、とネットワーク（ＮＷ）を介して接続されている。
　表示装置１０は、表示部１１と、記憶部１２と、予測部１３と、画面制御部１４と、表示データ退避部１５と、表示データ取得部１６と、通信部１７と、検出センサ１８と、表示書換指示部１９と、を備える。
　表示部１１と、予測部１３と、画面制御部１４については、図１を用いて説明したとおりである。
　記憶部１２は、表示部１１に表示するデータを記憶する。
　表示データ退避部１５は、記憶部１２が記憶するデータをデータ管理装置２０に送信することで、そのデータを退避させる（当該データのバックアップを行う）。
　表示データ取得部１６は、データ管理装置２０から表示部１１に表示するデータを取得し、記憶部１２に書き込んで記憶させる。
　通信部１７は、データ管理装置２０との通信を行う。
　検出センサ１８は、表示書き換え機能の喪失を判定するための情報を検出するセンサである。
　表示書換指示部１９は、画面制御部１４に表示書き換え命令を行う。例えば、ユーザがあるデータの表示を指示する操作を表示装置１０に行った場合、表示書換指示部１９は、ユーザが指示したデータの表示を画面制御部１４に指示する。 FIG. 2 is a diagram showing an example of a display system in an embodiment according to the present invention.
As shown in FIG. 2, the display system includes a display device 10 and a data management device 20. The data management device 20 is connected to one or a plurality of display devices 10 via a network (NW).
The display device 10 includes a display unit 11, a storage unit 12, a prediction unit 13, a screen control unit 14, a display data saving unit 15, a display data acquisition unit 16, a communication unit 17, a detection sensor 18, A display rewriting instruction unit 19.
The display unit 11, the prediction unit 13, and the screen control unit 14 are as described with reference to FIG.
The storage unit 12 stores data to be displayed on the display unit 11.
The display data saving unit 15 saves the data by transmitting the data stored in the storage unit 12 to the data management device 20 (backs up the data).
The display data acquisition unit 16 acquires data to be displayed on the display unit 11 from the data management device 20, and writes and stores the data in the storage unit 12.
The communication unit 17 communicates with the data management device 20.
The detection sensor 18 is a sensor that detects information for determining the loss of the display rewriting function.
The display rewriting instruction unit 19 issues a display rewriting command to the screen control unit 14. For example, when the user performs an operation to instruct display of certain data on the display device 10, the display rewriting instruction unit 19 instructs the screen control unit 14 to display data instructed by the user.
　データ管理装置２０は、認証部２１と、表示データ配信部２２と、記憶部２３と、通信部２４と、を備える。
　認証部２１は、表示装置１０からの接続要求があった場合に、その表示装置１０の認証を行う。
　表示データ配信部２２は、表示装置１０からデータの要求があった場合に、表示装置１０へ配信するデータを選択する。また、表示データ配信部２２は、表示装置１０からデータの退避要求があった場合に、表示装置１０から退避データを取得する。
　記憶部２３は、表示装置１０へ配信するデータを記憶する。また、表示データ配信部２２が取得した退避データを記憶する。
　通信部２４は、表示装置１０との通信を行う。 The data management device 20 includes an authentication unit 21, a display data distribution unit 22, a storage unit 23, and a communication unit 24.
The authentication unit 21 authenticates the display device 10 when there is a connection request from the display device 10.
The display data distribution unit 22 selects data to be distributed to the display device 10 when there is a data request from the display device 10. Further, the display data distribution unit 22 acquires saved data from the display device 10 when there is a data save request from the display device 10.
The storage unit 23 stores data to be distributed to the display device 10. Further, the save data acquired by the display data distribution unit 22 is stored.
The communication unit 24 communicates with the display device 10.
　本実施形態の表示システムにおいて、データ管理装置２０は、表示装置１０で表示するデータ（コンテンツなど）を、表示装置１０ごとに管理している。
　表示装置１０は、ユーザの操作に応じて、データ管理装置２０からデータを取得し、表示部１１にそのデータを表示する。また、表示装置１０は、表示部１１に表示したデータに対してユーザからの変更があった場合などに、その変更後のデータをデータ管理装置２０に送信して、バックアップを取る。 In the display system of the present embodiment, the data management device 20 manages data (contents and the like) displayed on the display device 10 for each display device 10.
The display device 10 acquires data from the data management device 20 in accordance with a user operation and displays the data on the display unit 11. Further, when the data displayed on the display unit 11 is changed by the user, the display device 10 transmits the changed data to the data management device 20 to take a backup.
　ところで、表示装置１０に表示するデータには、秘密情報も含まれる。表示部１１は、給電を停止しても表示データが残る性質を有しているので、ユーザが意図してデータを消去しなければ、表示部１１には秘密情報が表示されたままの状態となり、情報が流出するリスクがある。また、ユーザが表示部１１の表示を消すことに成功したとしても、記憶部１２には、秘密情報が記憶されている。その為、表示装置１０ごと盗難された場合などに、記憶部１２が記憶する秘密情報を盗み取られる可能性があるため、ユーザは、記憶部１２が記憶する秘密情報を消去しなければならない。
　このような情報流出リスクに対し、例えば、データの表示後一定期間が経過すると、表示部１１に表示されたデータを消去し、記憶部１２が記憶するデータを削除する制御を行うことなどが考えられる。しかしながら、そのような制御だけでは、例えば、表示装置１０を落としてしまい故障させてしまった場合などに、その制御を実行する回路が破損され、表示部１１に秘密情報の表示が残ったままになったり、記憶部１２に秘密情報が残ったままになったりする可能性がある。 By the way, the data displayed on the display device 10 includes secret information. Since the display unit 11 has a property that display data remains even when power supply is stopped, unless the user intentionally deletes the data, the display unit 11 remains in a state where confidential information is displayed. There is a risk that information will be leaked. Even if the user succeeds in erasing the display on the display unit 11, secret information is stored in the storage unit 12. Therefore, since the secret information stored in the storage unit 12 may be stolen when the entire display device 10 is stolen, the user must erase the secret information stored in the storage unit 12.
For such information leakage risk, for example, when a certain period of time elapses after data is displayed, it is considered to perform control to delete the data displayed on the display unit 11 and delete the data stored in the storage unit 12. It is done. However, with such control alone, for example, when the display device 10 is dropped and broken down, the circuit that executes the control is damaged, and the display of the secret information remains on the display unit 11. Or the secret information may remain in the storage unit 12.
　そこで、本実施形態では、表示部１１の表示書き換え機能の喪失や記憶部１２からデータを削除する機能が喪失される状況となることを予測し、表示部１１の表示を消去または変更したり、記憶部１２のデータを削除したりして、情報の流出を防止する。 Therefore, in this embodiment, it is predicted that the display rewriting function of the display unit 11 is lost or the function of deleting data from the storage unit 12 is lost, and the display on the display unit 11 is deleted or changed, The data in the storage unit 12 is deleted to prevent the information from being leaked.
　図３は、本発明に係る一実施形態における表示装置の概略図である。
　表示装置１０は、歪センサ１８Ａ～１８Ｄ、及び、加速度センサ１８Ｅを備えている。また、表示装置１０は、表示部１１にデータを表示する制御回路の通電チェックを行う、図示しない通電センサを１つまたは複数備えている。
　具体的には、図３で示されるように、歪センサ１８Ａは表示部１１の上縁部に沿うように配置され、歪センサ１８Ｂは表示部１１の右縁部に沿うように配置され、歪センサ１８Ｃは表示部１１の下縁部に沿うように配置され、歪センサ１８Ｄは表示部１１の左縁部に沿うように配置されている。
　予測部１３は、歪センサ１８Ａ～１８Ｄで検出された表示装置１０の歪量が所定の閾値を超えた場合、表示書き換え機能の喪失につながる曲げなどの筐体の変形が生じると予測する。
　加速度センサ１８Ｅは、表示装置１０の任意の位置に配置され、表示装置１０の移動に係る加速度を検出する。予測部１３は、加速度センサ１８Ｅで検出された加速度が所定の閾値を超えた場合、表示書き換え機能の喪失につながる衝撃が生じると予測する。
　図示しない通電センサは、例えば、上記制御回路に電流が流れている状態で当該回路の電圧を検出する。予測部１３は、通電センサの検出した電圧が所定の範囲外となった場合に、表示書き換え機能の喪失につながる回路の動作不良が生じると予測する。 FIG. 3 is a schematic view of a display device according to an embodiment of the present invention.
The display device 10 includes strain sensors 18A to 18D and an acceleration sensor 18E. In addition, the display device 10 includes one or a plurality of energization sensors (not shown) that perform energization check of a control circuit that displays data on the display unit 11.
Specifically, as shown in FIG. 3, the strain sensor 18 </ b> A is disposed along the upper edge of the display unit 11, and the strain sensor 18 </ b> B is disposed along the right edge of the display unit 11. The sensor 18 </ b> C is disposed along the lower edge of the display unit 11, and the strain sensor 18 </ b> D is disposed along the left edge of the display unit 11.
The prediction unit 13 predicts that deformation of the housing such as bending that leads to loss of the display rewriting function will occur when the amount of distortion of the display device 10 detected by the strain sensors 18A to 18D exceeds a predetermined threshold.
The acceleration sensor 18 </ b> E is disposed at an arbitrary position of the display device 10 and detects an acceleration related to the movement of the display device 10. When the acceleration detected by the acceleration sensor 18E exceeds a predetermined threshold, the prediction unit 13 predicts that an impact leading to the loss of the display rewriting function will occur.
For example, an energization sensor (not shown) detects the voltage of the circuit in a state where a current flows through the control circuit. The predicting unit 13 predicts that when the voltage detected by the energization sensor is out of a predetermined range, a malfunction of the circuit leading to the loss of the display rewriting function will occur.
　図４は、本発明に係る一実施形態における表示消去処理フローの一例を示す図である。
　図４を用いて、予測部１３が表示書き換え機能の喪失を予測し、画面制御部１４が表示部１１の表示を消去または変更する処理について説明する。
　まず、表示装置１０は、データ管理装置２０から表示データをダウンロードする（ステップＳ１１）。具体的には、ユーザの操作により、表示データ取得部１６は、ユーザが指定する、表示部１１に表示するための表示データを、データ管理装置２０へ要求する。通信部１７は、要求する表示データの識別情報、ＩＤとパスワード等の認証情報をデータ管理装置２０へ送信する。
　データ管理装置２０では、通信部２４が表示データの識別情報と認証情報を受信し、表示データの識別情報と認証情報とを認証部２１へ出力する。認証部２１は、表示装置１０から受信した認証情報について、そのユーザがその表示データをダウンロードできるかどうかについて認証を行う。
　認証が失敗した場合、通信部２４は、認証失敗を表示装置１０へ通知する。認証が成功した場合、認証部２１は、表示データの識別情報を、表示データ配信部２２へ出力する。表示データ配信部２２は、記憶部２３から識別情報が示す表示データを読み出して、通信部２４を介して表示装置１０に送信する。
　表示装置１０では、表示データ取得部１６が、通信部１７を介して取得した表示データを、記憶部１２に書き込む。 FIG. 4 is a diagram showing an example of a display erasure processing flow in one embodiment according to the present invention.
A process in which the prediction unit 13 predicts the loss of the display rewriting function and the screen control unit 14 erases or changes the display on the display unit 11 will be described with reference to FIG.
First, the display device 10 downloads display data from the data management device 20 (step S11). Specifically, the display data acquisition unit 16 requests the data management device 20 for display data to be displayed on the display unit 11 specified by the user by an operation of the user. The communication unit 17 transmits the identification information of the requested display data, and authentication information such as an ID and a password to the data management device 20.
In the data management device 20, the communication unit 24 receives the display data identification information and authentication information, and outputs the display data identification information and authentication information to the authentication unit 21. The authentication unit 21 authenticates the authentication information received from the display device 10 as to whether or not the user can download the display data.
When the authentication fails, the communication unit 24 notifies the display device 10 of the authentication failure. When the authentication is successful, the authentication unit 21 outputs the display data identification information to the display data distribution unit 22. The display data distribution unit 22 reads the display data indicated by the identification information from the storage unit 23 and transmits it to the display device 10 via the communication unit 24.
In the display device 10, the display data acquisition unit 16 writes the display data acquired via the communication unit 17 in the storage unit 12.
　次に、表示書換指示部１９は、ユーザが指定した表示データの表示を画面制御部１４に指示する。画面制御部１４は、記憶部１２からユーザが指定した表示データを読み出し、表示部１１に表示する（ステップＳ１２）。
　画面制御部１４が表示データを表示部１１に表示すると、その後も、表示書換指示部１９は、ユーザの操作に基づいて、ページ送りなど表示の書き換えを画面制御部１４に指示する。画面制御部１４は、表示書換指示部１９の指示を受けて、表示の書き換えを行う。また、画面制御部１４は、ユーザが表示部１１に入力した入力データを、表示データと紐付けて記憶部１２へ書き込むことも行う。 Next, the display rewriting instruction unit 19 instructs the screen control unit 14 to display the display data designated by the user. The screen control unit 14 reads the display data designated by the user from the storage unit 12 and displays it on the display unit 11 (step S12).
When the screen control unit 14 displays the display data on the display unit 11, the display rewriting instruction unit 19 thereafter instructs the screen control unit 14 to rewrite the display such as page turning based on the user's operation. The screen control unit 14 rewrites the display in response to an instruction from the display rewriting instruction unit 19. The screen control unit 14 also writes the input data input to the display unit 11 by the user in the storage unit 12 in association with the display data.
　画面制御部１４が表示部１１の表示データを書き換えるなどの制御を行っている間、予測部１３は、検出センサ１８から表示装置１０の歪量、表示装置１０の加速度、表示制御回路の通電チェックにおける電圧値などを取得し、表示書き換え機能の喪失を予測する（ステップＳ１３）。
　例えば、予測部１３は、歪センサ１８Ａ～１８Ｄから取得した歪量が所定の閾値を超えた場合に、それ以上表示装置１０が変形すると、表示部１１の表示を消去したり、表示内容を書き換えたりする機能を提供する回路が故障すると予測する。
　このとき、例えば、表示書き換え機能を提供する回路が配置された位置と、歪センサ１８Ａ～１８Ｄによって検出された歪の位置とを比較して、歪を検出した位置が当該回路の近傍であり、かつ、その歪量が所定の閾値を超えた場合に、表示書き換え機能の喪失を予測してもよい。
　あるいは、表示書き換え機能を提供する回路が配置された位置の近傍において、ある方向の歪が発生し（例えば、ひねりが加わった場合）、かつ、その歪量が所定の閾値を超えた場合に表示書き換え機能の喪失を予測してもよい。 While the screen control unit 14 performs control such as rewriting the display data of the display unit 11, the prediction unit 13 checks the distortion amount of the display device 10, the acceleration of the display device 10, and the energization check of the display control circuit from the detection sensor 18. A voltage value or the like is acquired, and the loss of the display rewriting function is predicted (step S13).
For example, the prediction unit 13 erases the display on the display unit 11 or rewrites the display content when the display device 10 is further deformed when the strain amount acquired from the strain sensors 18A to 18D exceeds a predetermined threshold. The circuit that provides the function is expected to fail.
At this time, for example, the position where the circuit providing the display rewriting function is arranged and the position of the distortion detected by the distortion sensors 18A to 18D are compared, and the position where the distortion is detected is in the vicinity of the circuit. In addition, when the amount of distortion exceeds a predetermined threshold, loss of the display rewriting function may be predicted.
Or, when a distortion in a certain direction occurs near the position where the circuit that provides the display rewriting function is arranged (for example, when a twist is added) and the amount of distortion exceeds a predetermined threshold, it is displayed. Loss of the rewriting function may be predicted.
　また、例えば、予測部１３は、加速度センサ１８Ｅから取得した加速度またはその加速度に基づいて計算した速度が所定の閾値を超えた場合に、表示装置１０に衝撃が加わり、表示部１１の表示を消去したり、表示内容を書き換えたりする機能を提供する回路が故障すると予測する。
　例えば、表示装置１０が落下して地面と衝突した場合に表示書き換え機能を提供する回路が故障するときの落下速度の閾値を記憶部１２が記憶しており、予測部１３は、加速度センサ１８Ｅから取得した所定時間における加速度から表示装置１０が落下していると判定し、更にそのときの落下速度が上記閾値を超えると、表示書き換え機能が喪失すると予測してもよい。
　また、例えば、予測部１３は、表示装置１０が備える所定の回路（例えば、上述の制御回路）について通電センサから取得した電圧値などが所定の範囲内にない場合に、表示部１１の表示を消去したり、表示内容を書き換えたりする機能を提供する回路が故障すると予測する。
　また、予測部１３は、表示書換指示部１９が表示の書き換えを指示した場合に、画面制御部１４が実際に表示書き換え処理を実行する実績に基づいて、表示書き換え機能の喪失を予測する。
　具体的には、例えば、予測部１３は、表示書換指示部１９が画面制御部１４に表示書き換え指示を行ってから、画面制御部１４が表示書き換えを行うまでの時間を監視する。そして、表示書換指示部１９が画面制御部１４に表示書き換え指示を行ってから、画面制御部１４が表示書き換えを行うまでの時間が所定の閾値以上の場合、予測部１３は、表示内容を書き換える機能が喪失すると予測する。
　あるいは、表示書換指示部１９が画面制御部１４に表示書き換え指示を行って、実際に画面制御部１４が表示書き換え処理を行った割合（１０回指示したが実際には５回しか表示書き換え処理を実行しないなど）が、所定の値に達しない場合、予測部１３は、表示内容を書き換える機能が喪失すると予測する。
　あるいは、表示書換指示部１９が画面制御部１４に表示書き換え指示を行ったにもかかわらず、画面制御部１４が表示の書き換えを行わない場合、予測部１３は、表示内容を書き換える機能が喪失すると予測する。
　また、例えば、表示書換指示部１９が画面制御部１４に表示書き換え指示を行っているにもかかわらず、画面制御部１４からエラーが返され、画面制御部１４がその指示を受け取らないような場合、例えば、エラーが返される回数が所定の閾値以上になると、予測部１３は、表示内容を書き換える機能が喪失すると予測する。あるいは、一時間以上、画面制御部１４が表示書き換え指示を受け取らないような場合、予測部１３は、表示内容を書き換える機能が喪失すると予測する。 For example, when the acceleration acquired from the acceleration sensor 18E or the speed calculated based on the acceleration exceeds a predetermined threshold, the prediction unit 13 applies an impact to the display device 10 and erases the display on the display unit 11. Or a circuit that provides a function of rewriting display contents is predicted to fail.
For example, when the display device 10 falls and collides with the ground, the storage unit 12 stores the threshold of the falling speed when the circuit that provides the display rewriting function fails, and the prediction unit 13 receives the acceleration sensor 18E from the acceleration sensor 18E. It may be determined that the display device 10 is falling from the acquired acceleration for a predetermined time, and if the dropping speed at that time exceeds the threshold value, the display rewriting function is lost.
In addition, for example, the prediction unit 13 displays the display on the display unit 11 when the voltage value acquired from the energization sensor is not within a predetermined range for a predetermined circuit (for example, the above-described control circuit) included in the display device 10. A circuit that provides a function of erasing or rewriting display contents is predicted to fail.
Moreover, when the display rewriting instruction | indication part 19 instruct | indicates rewriting of a display, the prediction part 13 estimates the loss of a display rewriting function based on the performance which the screen control part 14 actually performs a display rewriting process.
Specifically, for example, the prediction unit 13 monitors the time from when the display rewriting instruction unit 19 gives a display rewriting instruction to the screen control unit 14 until the screen control unit 14 rewrites the display. When the time from when the display rewriting instruction unit 19 instructs the screen control unit 14 to rewrite the display until the screen control unit 14 rewrites the display is equal to or greater than a predetermined threshold, the prediction unit 13 rewrites the display content. Expect to lose function.
Alternatively, the display rewriting instruction unit 19 instructs the screen control unit 14 to rewrite the display, and the ratio that the screen control unit 14 actually performs the display rewriting process (instructed 10 times, but in practice the display rewriting process is performed only 5 times. When the predetermined value is not reached, the prediction unit 13 predicts that the function of rewriting the display content is lost.
Alternatively, if the display rewriting instruction unit 19 instructs the screen control unit 14 to rewrite the display, but the screen control unit 14 does not rewrite the display, the prediction unit 13 loses the function of rewriting the display contents. Predict.
Further, for example, when the display rewriting instruction unit 19 gives a display rewriting instruction to the screen control unit 14, an error is returned from the screen control unit 14 and the screen control unit 14 does not receive the instruction. For example, when the number of times an error is returned exceeds a predetermined threshold, the prediction unit 13 predicts that the function of rewriting the display content is lost. Alternatively, when the screen control unit 14 does not receive the display rewriting instruction for one hour or longer, the prediction unit 13 predicts that the function of rewriting the display content is lost.
　予測部１３が表示書き換え機能の喪失を予測しない場合（ステップＳ１３；Ｎｏ）、ステップＳ１２からの処理を繰り返す。
　予測部１３が表示書き換え機能の喪失を予測した場合（ステップＳ１３；Ｙｅｓ）、予測部１３は、表示の停止を指示する信号を画面制御部１４へ出力する。
　これにより、画面制御部１４は、表示部１１の表示を消去する（ステップＳ１４）。または、画面制御部１４は、表示部１１に表示したデータを、秘密性がない他のデータに書き換える。 When the prediction unit 13 does not predict the loss of the display rewriting function (step S13; No), the processing from step S12 is repeated.
When the prediction unit 13 predicts the loss of the display rewriting function (step S13; Yes), the prediction unit 13 outputs a signal instructing to stop the display to the screen control unit 14.
Thereby, the screen control unit 14 erases the display on the display unit 11 (step S14). Alternatively, the screen control unit 14 rewrites the data displayed on the display unit 11 with other data having no confidentiality.
　次に、表示データ退避部１５は、ステップＳ１４で消去、もしくは書き換えられる前の表示データについて、ユーザが追加や変更を行った表示データと対応付けて記録されたデータ（更新データ）を記憶部１２から読みだして、通信部１７を介してデータ管理装置２０へアップロードする（ステップＳ１５）。
　具体的には、表示データ退避部１５は、更新データのバックアップをデータ管理装置２０へ要求する。通信部１７は、更新データが存在する表示データの識別情報、更新データ、ＩＤとパスワード等の認証情報をデータ管理装置２０へ送信する。
　データ管理装置２０では、通信部２４が表示データの識別情報、更新データ、認証情報を受信し、表示データの識別情報と認証情報とを認証部２１へ出力する。認証部２１は、表示装置１０から受信した認証情報について認証を行う。認証が失敗した場合、通信部２４は、認証失敗を表示装置１０へ通知する。認証が成功した場合、認証部２１は、表示データの識別情報、更新データ、認証情報を表示データ配信部２２へ出力する。表示データ配信部２２は、更新データを、表示データの識別情報及び認証情報及び現在時刻と対応付けて、記憶部２３へ書き込む。 Next, the display data saving unit 15 stores the data (update data) recorded in association with the display data added or changed by the user with respect to the display data before being erased or rewritten in step S14. Is uploaded to the data management device 20 via the communication unit 17 (step S15).
Specifically, the display data saving unit 15 requests the data management apparatus 20 to back up the update data. The communication unit 17 transmits identification information of display data in which update data exists, update data, and authentication information such as an ID and a password to the data management apparatus 20.
In the data management device 20, the communication unit 24 receives display data identification information, update data, and authentication information, and outputs the display data identification information and authentication information to the authentication unit 21. The authentication unit 21 authenticates the authentication information received from the display device 10. When the authentication fails, the communication unit 24 notifies the display device 10 of the authentication failure. When the authentication is successful, the authentication unit 21 outputs the display data identification information, update data, and authentication information to the display data distribution unit 22. The display data distribution unit 22 writes the update data in the storage unit 23 in association with the identification information, authentication information, and current time of the display data.
　表示データ退避部１５が、通信部１７を介して更新データなどをデータ管理装置２０へ送信すると、画面制御部１４は、表示データと表示データに対応付けて書き込まれた更新データを記憶部１２から削除する（ステップＳ１６）。 When the display data saving unit 15 transmits update data or the like to the data management device 20 via the communication unit 17, the screen control unit 14 stores the update data written in association with the display data and the display data from the storage unit 12. Delete (step S16).
　本実施形態によれば、表示装置１０が故障や破壊によって表示の消去ができなくなるような状況が起こることを予測し、表示部１１に表示された秘密情報を消去したり、記憶部１２が記憶する秘密情報を削除したりすることができる。
　これにより、電源オフ時や秘密情報の閲覧終了をトリガーにして秘密情報を消去できる情報流出防止機能を備えた表示装置において、表示の消去が行われる前に、表示装置１０が故障や破壊した際に表示が残ってしまうリスクを防止することができる。また、その際、記憶部１２の秘密情報を削除するので、第三者が故障した表示装置１０から秘密情報を取り出すことを防止することができる。 According to the present embodiment, it is predicted that a situation will occur in which the display device 10 cannot be erased due to failure or destruction, and the secret information displayed on the display unit 11 is erased, or the storage unit 12 stores the information. Secret information to be deleted.
As a result, when the display device 10 breaks down or is destroyed before the display is erased in a display device having an information leakage prevention function that can erase secret information when the power is turned off or when browsing confidential information is terminated. It is possible to prevent the risk that the display remains on the screen. Moreover, since the secret information of the memory | storage part 12 is deleted in that case, it can prevent taking out secret information from the display apparatus 10 which the third party failed.
　なお、上記の処理フローでは、表示部１１に表示されている表示データ（コンテンツ）について、表示を消去したり記憶部１２のデータを削除したりする場合を例に説明を行ったが、表示部１１に表示されたている表示データが秘密情報である場合のみ、表示の消去・書き換え及び記憶部１２からのデータ削除を行うようにしてもよい。
　この場合、記憶部１２には、表示データの識別情報と、秘密情報かどうかを区分する区分フラグと、表示データと、が対応付けられて書き込まれており、予測部１３は、区分フラグの値が表示データが秘密情報であることを示す場合のみ、ステップＳ１３以降の処理を行うようにしてもよい。 In the above processing flow, the case where the display data (content) displayed on the display unit 11 is deleted or the data in the storage unit 12 is deleted has been described as an example. Only when the display data displayed in 11 is confidential information, display erasure / rewriting and data deletion from the storage unit 12 may be performed.
In this case, the storage unit 12 stores the identification information of the display data, the classification flag that classifies whether the information is secret information, and the display data in association with each other, and the prediction unit 13 sets the value of the classification flag. Only when the display data indicates that it is secret information, the processing after step S13 may be performed.
　また、現在表示部１１に表示されている表示データは秘密情報ではないが、記憶部１２は、他の表示データも記憶しており、その中に秘密情報が含まれている場合、秘密情報だけを記憶部１２から削除するようにしてもよい。その場合、予測部１３は、記憶部１２が記憶するすべてのコンテンツに対して区分フラグの値をチェックし、秘密情報が含まれている場合のみ、ステップＳ１３以降の処理を行うようにしてもよい。
　このようにすれば、例えば、秘密情報を入手したい者が、表示装置１０を盗難し、記憶部１２以外を破壊して記憶部１２を取出して秘密情報を入手しようと試みた場合などの情報流出のリスクを軽減することができる。 In addition, the display data currently displayed on the display unit 11 is not secret information, but the storage unit 12 also stores other display data. If the secret information is included in the display data, only the secret information is stored. May be deleted from the storage unit 12. In that case, the prediction unit 13 may check the value of the division flag for all the contents stored in the storage unit 12, and may perform the processing after step S13 only when secret information is included. .
In this way, for example, when a person who wants to obtain confidential information steals the display device 10 and tries to obtain confidential information by taking out the storage unit 12 by destroying other than the storage unit 12. Can reduce the risk.
　図５は、本発明に係る一実施形態における表示データリカバリー処理フローの一例を示す図である。
　図５を用いて、表示データのリカバリー処理について説明を行う。
　前提として、図４で説明した処理フローによって、表示データのバックアップをデータ管理装置２０へ保存し、表示装置１０の記憶部１２からその表示データを削除してあるものとする。また、予測部１３は、表示装置１０の表示書き換え機能が喪失すると予測したが実際には、表示装置１０は表示書き換え機能を喪失しなかったものとする。
　図５で説明する処理は、ユーザが予測部１３の予測によって削除された表示データを引き続き表示装置１０で閲覧するために必要な処理である。 FIG. 5 is a diagram showing an example of a display data recovery processing flow in an embodiment according to the present invention.
The display data recovery process will be described with reference to FIG.
As a premise, it is assumed that a backup of display data is stored in the data management device 20 and the display data is deleted from the storage unit 12 of the display device 10 by the processing flow described in FIG. In addition, the prediction unit 13 predicts that the display rewriting function of the display device 10 is lost, but it is assumed that the display device 10 does not actually lose the display rewriting function.
The process described with reference to FIG. 5 is a process necessary for the user to continuously browse the display data deleted by the prediction of the prediction unit 13 on the display device 10.
　まず、ユーザの操作により、表示データ取得部１６は、ユーザが指定する表示データを、データ管理装置２０へ要求する（ステップＳ２１）。具体的には、通信部１７は、要求する表示データの識別情報、認証情報をデ、ータ管理装置２０へ送信する。
　データ管理装置２０では、認証部２１が、通信部２４を介して表示データの識別情報と認証情報を取得し、そのユーザがその表示データをダウンロードできるかどうかについて認証を行う（ステップＳ２２）。認証が失敗した場合、通信部２４は、認証失敗を表示装置１０へ通知する。
　認証が成功した場合、認証部２１は、表示データの識別情報を表示データ配信部２２へ出力する。表示データ配信部２２は、記憶部２３から、識別情報が示す表示データ及び識別情報に対応付けられた更新データを読み出して、通信部２４を介して表示装置１０に送信する。 First, the display data acquisition part 16 requests | requires the display data which a user designates to the data management apparatus 20 by a user's operation (step S21). Specifically, the communication unit 17 transmits the identification information and authentication information of the requested display data to the data management device 20.
In the data management apparatus 20, the authentication unit 21 acquires identification information and authentication information of display data via the communication unit 24, and authenticates whether or not the user can download the display data (step S22). When the authentication fails, the communication unit 24 notifies the display device 10 of the authentication failure.
If the authentication is successful, the authentication unit 21 outputs display data identification information to the display data distribution unit 22. The display data distribution unit 22 reads the display data indicated by the identification information and the update data associated with the identification information from the storage unit 23 and transmits them to the display device 10 via the communication unit 24.
　表示装置１０では、表示データ取得部１６が、通信部１７を介してユーザ情報に対応した表示データなどを取得し（ステップＳ２３）、取得した表示データなどを記憶部１２に書き込む。
　次に画面制御部１４は、記憶部１２から、データ管理装置２０へ要求した表示データを読みだして、表示部１１に表示する（ステップＳ２４）。 In the display device 10, the display data acquisition unit 16 acquires display data corresponding to the user information via the communication unit 17 (step S23), and writes the acquired display data and the like in the storage unit 12.
Next, the screen control unit 14 reads the display data requested from the storage unit 12 to the data management device 20 and displays it on the display unit 11 (step S24).
　これにより、ユーザは、表示データが表示書き換え機能喪失の予測により削除された場合であっても、データ管理装置２０から表示データのバックアップを取得して、削除前の表示データを閲覧することができる。
　なお、予測部１３が、表示装置１０の表示書き換え機能が喪失すると予測し、実際に、表示装置１０は表示書き換え機能を喪失した場合、ユーザは、新たな表示装置１０を入手し、表示書き換え機能を喪失した表示装置１０と同じ認証情報を設定することで、データ管理装置２０から表示データのバックアップを取得することができる。 Thereby, even if it is a case where display data is deleted by prediction of a display rewriting function loss, the user can acquire the backup of display data from the data management apparatus 20, and can browse the display data before deletion. .
Note that when the prediction unit 13 predicts that the display rewriting function of the display device 10 is lost, and the display device 10 actually loses the display rewriting function, the user obtains a new display device 10 and displays the display rewriting function. By setting the same authentication information as that of the display device 10 that has lost the display data, a backup of the display data can be acquired from the data management device 20.
　なお、上述した表示装置１０における各処理の過程は、プログラムの形式でコンピュータ読み取り可能な記録媒体に記憶されており、このプログラムを表示装置１０のコンピュータが読み出して実行することによって、上記処理が行われる。
　ここでコンピュータ読み取り可能な記録媒体とは、磁気ディスク、光磁気ディスク、ＣＤ－ＲＯＭ、ＤＶＤ－ＲＯＭ、半導体メモリ等をいう。また、このコンピュータプログラムを通信回線によってコンピュータに配信し、この配信を受けたコンピュータが当該プログラムを実行するようにしてもよい。 Each process in the display device 10 described above is stored in a computer-readable recording medium in the form of a program, and the program is read and executed by the computer of the display device 10 to execute the above-described processing. Is called.
Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.
　また、上記プログラムは、前述した機能の一部を実現するためのものであってもよい。
　さらに、前述した機能をコンピュータシステムにすでに記録されているプログラムとの組み合わせで実現できるもの、いわゆる差分ファイル（差分プログラム）であってもよい。
　また、表示装置１０は、１台のコンピュータで構成されていても良いし、通信可能に接続された複数のコンピュータで構成されていてもよい。 The program may be for realizing a part of the functions described above.
Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.
Moreover, the display apparatus 10 may be comprised with one computer, and may be comprised with the some computer connected so that communication was possible.
　その他、本発明の趣旨を逸脱しない範囲で、上記した実施の形態における構成要素を周知の構成要素に置き換えることは適宜可能である。また、この発明の技術範囲は上記の実施形態に限られるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。
　また、データ管理装置２０は、サーバ端末装置の一例である。 In addition, it is possible to appropriately replace the components in the above-described embodiments with known components without departing from the spirit of the present invention. The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
The data management device 20 is an example of a server terminal device.

　この出願は、２０１５年３月２０日に出願された日本出願特願２０１５－０５７９７２号を基礎とする優先権を主張し、その開示の全てをここに取り込む。
This application claims priority based on Japanese Patent Application No. 2015-057972 filed on Mar. 20, 2015, the entire disclosure of which is incorporated herein.
　本発明によれば、表示装置の表示内容が変更できなくなるような故障の発生を予測し、表示を消去することができる。 According to the present invention, it is possible to predict the occurrence of a failure that makes it impossible to change the display content of the display device, and to erase the display.
１０・・・表示装置
１１・・・表示部
１２・・・記憶部
１３・・・予測部
１４・・・画面制御部
１５・・・表示データ退避部
１６・・・表示データ取得部
１７・・・通信部
２０・・・データ管理装置
２１・・・認証部
２２・・・表示データ配信部
２３・・・記憶部
２４・・・通信部 DESCRIPTION OF SYMBOLS 10 ... Display apparatus 11 ... Display part 12 ... Memory | storage part 13 ... Prediction part 14 ... Screen control part 15 ... Display data saving part 16 ... Display data acquisition part 17 ... Communication unit 20 ... Data management device 21 ... Authentication unit 22 ... Display data distribution unit 23 ... Storage unit 24 ... Communication unit

Claims (12)

  1. 　データを不揮発的に表示する表示部と、
    　自装置の表示書き換え機能の喪失を予測する予測部と、
    　前記予測部が前記機能の喪失を予測した場合、前記表示部の表示を変更する画面制御部と、
    　を備える表示装置。     A display unit for displaying data in a nonvolatile manner;
    A prediction unit for predicting the loss of the display rewriting function of the own device;
    When the prediction unit predicts the loss of the function, a screen control unit for changing the display of the display unit,
    A display device comprising:
  2. 　前記予測部は、所定の回路に対する通電チェックの結果に基づいて、表示書き換え機能が喪失すると予測する、
    　請求項１に記載の表示装置。     The prediction unit predicts that the display rewriting function is lost based on a result of energization check for a predetermined circuit.
    The display device according to claim 1.
  3. 　前記予測部は、自装置の筐体の歪量が所定の閾値以上の場合、表示書き換え機能が喪失すると予測する、
    　請求項１から請求項２の何れか１項に記載の表示装置。     The prediction unit predicts that the display rewriting function is lost when the amount of distortion of the casing of the device is equal to or greater than a predetermined threshold.
    The display device according to claim 1.
  4. 　前記予測部は、自装置に加わる速度または加速度が所定の閾値以上の場合、表示書き換え機能が喪失すると予測する、
    　請求項１から請求項３の何れか１項に記載の表示装置。     The prediction unit predicts that the display rewriting function is lost when the speed or acceleration applied to the device is equal to or greater than a predetermined threshold.
    The display device according to any one of claims 1 to 3.
  5. 　前記画面制御部に表示の書き換え指示を行う表示書換指示部、
    　をさらに備え、
    　前記予測部は、前記表示書換指示部が表示の書き換えを指示した場合に、前記画面制御部が表示書き換え処理を実行する実績に基づいて、表示書き換え機能の喪失を予測する、
    　請求項１から請求項４の何れか１項に記載の表示装置。     A display rewrite instruction unit for instructing display rewriting to the screen control unit,
    Further comprising
    The predicting unit predicts the loss of the display rewriting function based on the result of the screen control unit executing the display rewriting process when the display rewriting instruction unit instructs to rewrite the display.
    The display device according to any one of claims 1 to 4.
  6. 　前記画面制御部は、前記表示部に表示したデータが秘密情報である場合に、前記表示部の表示を変更する
    　請求項１から請求項５の何れか１項に記載の表示装置。     The display device according to any one of claims 1 to 5, wherein the screen control unit changes display of the display unit when data displayed on the display unit is confidential information.
  7. 　前記データを記憶する記憶部、
    　をさらに備え、
    　前記画面制御部は、前記予測部が前記機能の喪失を予測した場合、前記記憶部から前記データを消去する、
    　請求項１から請求項６の何れか１項に記載の表示装置。     A storage unit for storing the data;
    Further comprising
    The screen control unit erases the data from the storage unit when the prediction unit predicts the loss of the function,
    The display device according to any one of claims 1 to 6.
  8. 　前記画面制御部が前記表示部の表示を変更する場合に、前記記憶部に記憶された当該データを、自装置に接続された他装置に退避する表示データ退避部をさらに備える
    　請求項７に記載の表示装置。     The display data saving unit for saving the data stored in the storage unit to another device connected to the device when the screen control unit changes the display on the display unit. Display device.
  9. 　前記他装置に退避したデータを当該他装置から取得し、前記記憶部に記録する表示データ取得部、
    　をさらに備える請求項８に記載の表示装置。     A display data acquisition unit that acquires data saved in the other device from the other device and records the data in the storage unit;
    The display device according to claim 8, further comprising:
  10. 　請求項８または請求項９に記載の表示装置と、
    　前記表示装置と接続されたサーバ端末装置と、
    　を備え、
    　前記表示データ退避部は、前記記憶部に記憶された当該データを、前記サーバ端末装置に退避する、
    　表示システム。     A display device according to claim 8 or 9,
    A server terminal device connected to the display device;
    With
    The display data saving unit saves the data stored in the storage unit to the server terminal device;
    Display system.
  11. 　表示装置にデータを不揮発的に表示し、
    　当該装置の表示書き換え機能の喪失を予測し、
    　前記機能の喪失を予測した場合、前記表示を変更する、
    　表示制御方法。     Display the data in a non-volatile manner on the display device,
    Predict the loss of the display rewrite function of the device,
    When the loss of the function is predicted, the display is changed.
    Display control method.
  12. 　データを不揮発的に表示する表示装置のコンピュータを、
    　自装置の表示書き換え機能の喪失を予測する手段、
    　前記機能の喪失を予測した場合、前記表示を変更する手段、
    　として機能させるためのプログラム。     A display device computer that displays data in a nonvolatile manner,
    Means for predicting the loss of the display rewriting function of the device itself,
    Means for changing the display if the loss of the function is predicted;
    Program to function as.
PCT/JP2016/055524 2015-03-20 2016-02-24 Display device, display system, display control method, and program WO2016152367A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005215498A (en) * 2004-01-30 2005-08-11 Seiko Epson Corp Display device
JP2005257755A (en) * 2004-03-09 2005-09-22 Seiko Epson Corp Display apparatus and image erasing method
JP2006350190A (en) * 2005-06-20 2006-12-28 Fuji Xerox Co Ltd Electronic paper and security system
JP2007102110A (en) * 2005-10-07 2007-04-19 Seiko Epson Corp Storage type display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005215498A (en) * 2004-01-30 2005-08-11 Seiko Epson Corp Display device
JP2005257755A (en) * 2004-03-09 2005-09-22 Seiko Epson Corp Display apparatus and image erasing method
JP2006350190A (en) * 2005-06-20 2006-12-28 Fuji Xerox Co Ltd Electronic paper and security system
JP2007102110A (en) * 2005-10-07 2007-04-19 Seiko Epson Corp Storage type display device

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