JP2008299367A - Retrieval system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quickly retrieve content stored in a terminal provided with a display device with a memory property. <P>SOLUTION: If a WWW browser of a computer device 20 receives an HTML file with a built-in script for implementing a retrieval function for a document from an electronic paper device 10, a retrieval function for the HTML file is implemented in the WWW browser. The computer device 20, when retrieving a file stored in the electronic paper device 10, acquires an index file stored in the electronic paper device 10, retrieves an input keyword in the acquired index file, and then displays a file name associated with the keyword in the index file. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technology for searching for content.

  There is a terminal disclosed in Patent Document 1 as a terminal including a display device having a so-called memory property that continuously displays the same image for a long time without supplying power. This terminal stores content received from other devices, displays the stored content on a display device having a storage property, and displays content such as catalogs, books, and documents created by a user.

JP 2004-102661 A

By the way, although a plurality of documents can be stored in the terminal, when the number of stored documents increases, it becomes difficult for the user to understand what documents are stored in the terminal. In this case, a means for searching for a document in the terminal is required, but a CPU (Central Processing Unit) for embedded use such as that used in the terminal disclosed in Patent Document 1 adopts an advanced search means. There is a possibility that the load on the CPU becomes high and affects other processes. Further, when performing a search in a computer device, it is necessary to switch the display when a large number of search results are displayed, and display the search results. However, a display device including an electrophoretic display element or a display including a cholesteric liquid crystal In a display device having a storage property such as a device, it takes time to rewrite the display, so that it is difficult to quickly switch and display a search result according to a user operation, and it takes time for the user to find a desired document. It will take.

  The present invention has been made under the background described above, and an object of the present invention is to provide a technique for quickly searching for content stored in a terminal having a display device having storage ability. It is in.

  In order to solve the above-described problems, the present invention stores content data representing content, page data representing a page for retrieving the content, and a program for realizing a function for retrieving the content data. And a page request message receiving means for receiving a page request message for requesting the page data, and when the page request message is received by the page request message receiving means, the program and the page data are stored from the storage means. Content data stored in the storage unit having a content transmitting unit that transmits the read program and the page data to the external computer device that has transmitted the page request message, and a display element having storage capability Means for displaying the content represented by Display device, page request message transmitting means for transmitting the page request message, content receiving means for receiving the program and page data transmitted from the content transmitting means, displaying the contents of the page data, There is provided a search system including a computer device having browser means for realizing a function of searching for the content data by executing a program received by the content receiving means.

In the present invention, when the program is executed by the browser unit, the computer device is an index that associates a word included in content represented by content data with a file name of content data including the word. An index file generation unit that generates a file may be realized, a keyword input by a user may be searched in the index file, and a search result may be displayed by the browser unit.

  In the present invention, the display device generates unique information receiving means for receiving unique information for uniquely identifying a user, and generates an encryption key and a decryption key based on the unique information received by the unique information receiving means. And a key transmitting means for transmitting the key generated by the key generating means to the external computer device.

  Further, in the present invention, when the program is executed by the browser unit, the computer device receives an encryption key transmitted from the key transmission unit, and stores the index file generated by the index file generation unit. An encryption means for encrypting with the received encryption key, and an index file transmission means for transmitting the index file encrypted by the encryption means to the display device, wherein the display device transmits the index file The index file transmitted by the means may be received, and the received index file may be stored in the storage means.

  In the present invention, the computer device acquires an index file stored in the storage unit and a decryption key for decrypting the index file from the display device, and is input to a page represented by the page data. The keyword may be searched in the index file, and the search result may be displayed by the browser means.

  In the present invention, the unique information may be biological information of a user of the display device.

  In the present invention, the computer device has content data acquisition means for acquiring content data stored in the storage means, and the index file generation means is the content acquired by the content data acquisition means. The index file may be generated from data.

[Configuration of the embodiment]
(overall structure)
FIG. 1 is a diagram showing each device according to an embodiment of the present invention. A wireless communication network 30 that is a wireless local area network (LAN) is connected to the Internet 40. The server device 50 is a device that functions as a WWW (world wide web) server, and is connected to the Internet 40. The electronic paper device 10 and the computer device 20 can communicate with each other via a wireless communication network 30 to exchange various messages, files, data, and the like. In addition, the computer device 20 can communicate with the server device 50 via the wireless communication network 30 and the Internet 40, and can exchange various messages, files, data, and the like with each other. Yes. In the present embodiment, a large number of electronic paper devices 10, computer devices 20, and server devices 50 are connected to a network and can communicate with each other. However, in order to prevent the drawing from becoming complicated, FIG. In FIG. 1, one electronic paper device 10, one computer device 20, and one server device 50 are shown.

(Configuration of the computer device 20)
The computer device 20 is a so-called personal computer device on which an operating system operates. As illustrated in FIG. 2, the computer apparatus 20 includes a control unit 201, a storage unit 205, a communication unit 206, an operation unit 207, and a display unit 208.

  The communication unit 206 has a communication interface function for performing wireless communication, and communicates with other devices via the wireless communication network 30 under the control of the control unit 201. The operation unit 207 includes a keyboard (not shown) and a mouse (not shown) for operating the computer device 20. The display unit 208 includes a liquid crystal display, and displays various images such as characters and graphic images and a menu screen for operating the computer device 20 under the control of the control unit 201. The storage unit 205 includes a hard disk device, and stores an OS program that realizes an operating system function, a browser program that realizes a WWW browser function capable of executing a script, and the like in the computer device 20. The storage unit 205 stores various files and data used by the computer device 20.

  The control unit 201 includes a CPU 202, a ROM (Read Only Memory) 203 storing an IPL (Initial Program Loader), and a RAM (Random Access Memory) 204. In the control unit 201, when power is supplied from a power source (not shown), the CPU 202 executes the IPL stored in the ROM 203. When the CPU 202 executes IPL, the OS program stored in the storage unit 205 is executed by the CPU 202, and the input / output functions such as input from the operation unit 207 and screen output, control of the storage unit 205, etc. Functions can be realized and a browser program can be executed. When the browser program is executed, the computer device 20 functions as a client device that communicates with a device functioning as a WWW server.

(Configuration of server device 50)
The server device 50 is a server device that operates as a WWW server. As illustrated in FIG. 3, the server device 50 includes a control unit 501, a storage unit 505, a communication unit 506, and an operation unit 507.

The communication unit 506 has a communication interface function, and communicates with other devices via the Internet 40 under the control of the control unit 501. The operation unit 507 has a keyboard (not shown) for operating the server device 50. The storage unit 505 has a hard disk device, and stores an OS program that causes the server device 50 to realize the function of the operating system, a server program that realizes the function of the WWW server, and the like.
The storage unit 505 stores various files such as a file to be transmitted to a client device. In the present embodiment, the storage unit 505 stores a plurality of HTML files, which are files representing documents and described according to HTML (HyperText Markup Language), in a specific area of the storage unit 505.
The storage unit 505 stores an index file. The index file is a file used when searching for an HTML file, and is a file in which information representing a word is associated with information on the file name of a file having the word in the document.

  The control unit 501 includes a CPU 502, a ROM 503 that stores an IPL, and a RAM 504. In the control unit 501, when power is supplied from a power source (not shown), the CPU 502 executes the IPL stored in the ROM 503. When the CPU 502 executes IPL, the OS program and the server program stored in the storage unit 505 are executed by the CPU 502, and the server device 50 functions as a WWW server and communicates with a device serving as a client.

(Configuration of electronic paper device 10)
The electronic paper device 10 is a device that displays images of content such as documents and electronic books, and is used by a plurality of users. As illustrated in FIG. 4, the electronic paper device 10 includes a control unit 101, a display unit 102, an operation unit 103, a communication unit 104, and a sensor unit 105.

  The display unit 102 is connected to the control unit 101 and includes a display device including a display element having memory properties. This display device is a display device having a so-called memory property in which, after an image is displayed, the same image is continuously displayed for a long time without applying voltage to each element. The display unit 102 is connected to the control unit 101, and displays an image representing a document, an operation screen for operating the electronic paper device 10, and the like under the control of the control unit 101. Note that an image display method in the display device is not limited to a specific method, and for example, an electrophoretic display method or a display method using a cholesteric liquid crystal may be used.

The operation unit 103 is connected to the control unit 101 and has various buttons for operating the electronic paper device 10. When the button of the operation unit 103 is operated, a signal indicating the operated button is output to the control unit 101. The control unit 101 specifies an instruction from the user based on this signal and the screen displayed on the display unit 102, and controls each unit according to the specified instruction.
The communication unit 104 connected to the control unit 101 has a communication interface function for performing wireless communication, and communicates with other devices via the wireless communication network 30 under the control of the control unit 101.

  The sensor unit 105 is connected to the control unit 101 and includes a fingerprint sensor 105 </ b> A that reads the fingerprint of the user of the electronic paper device 10. The sensor unit 105 reads the fingerprint of the user's finger with the fingerprint sensor 105 </ b> A under the control of the control unit 101, and sends the feature point data representing the feature point of the read fingerprint or the fingerprint data representing the read fingerprint to the control unit 101. Output.

The control unit 101 includes a CPU 101A, a ROM 101B, a RAM 101C, and a nonvolatile memory 101D, and a control program executed by the CPU 101A is stored in the ROM 101B.
The non-volatile memory 101D is a memory that retains stored contents even when power is not supplied, and is a script (program) written in a script language, which is used to create and edit a document in a WWW browser realized in the computer device 20. A script for realizing functions such as file encryption and decryption and a search script for realizing a function for searching for files are stored. The nonvolatile memory 101D stores a plurality of HTML files (content data) described according to HTML.
The nonvolatile memory 101D also includes an encryption key used when encrypting the file, a decryption key used when decrypting the encrypted file, feature point data output from the sensor unit 105, encryption The file name of the recorded file is stored. The nonvolatile memory 101D stores a user table TB1 having the format shown in FIG. In the user table TB1, data representing the name of a user who has the right to use the electronic paper device 10 is stored in the “user name” field. In the “feature point” field, a file name of feature point data representing the feature point of the fingerprint of the user who has the right to use the electronic paper device 10 is stored.

In the control unit 101, when power is supplied from a power source (not shown), the control program stored in the ROM 101B is executed by the CPU 101A. When the CPU 101A executes the control program, each unit is controlled by the control unit 101, a WWW server function for communicating with a client device according to HTTP (HyperText Transfer Protocol), a function for storing a file in the nonvolatile memory 101D, a nonvolatile memory Various functions such as a function of displaying an image represented by a file stored in 101D on the display unit 102 and a function of displaying an operation screen for operating the electronic paper device 10 on the display unit 102 are realized in the electronic paper device 10. .
Further, when the control program is executed by the CPU 101A, the fingerprint sensor 105 has a function of storing the feature point data output from the fingerprint sensor 105A in the nonvolatile memory 101D.
A function for comparing the feature point data output from A and the feature point data stored in the nonvolatile memory 101D to authenticate the user, and an encryption key and a decryption key from the fingerprint data output from the fingerprint sensor 105A Various functions related to the security of the electronic paper device 10 and the file, such as a function to be generated, are realized.

[Operation of the embodiment]
(Operation when the user logs in to the electronic paper device 10)
First, an operation when the user logs in to the electronic paper device 10 will be described. When a user whose user name is “ichiro” operates the operation unit 103 to instruct the electronic paper device 10 to display a list of names of users who have the right to use the electronic paper device 10, the control unit 101 displays the user table. Read the user name stored in TB1. Then, the control unit 101 controls the display unit 102 to display the read name list on the display unit 102 (FIG. 6: step SA1). Here, since “ichiro”, “jiro”, and “saburo” are stored as user names in the user table TB 1, the stored user names are displayed on the display unit 102.

  When the user who has viewed this screen operates the operation unit 103 to select his / her user name “ichiro” (step SA2; YES), the control unit 101 associates it with the selected user name. The file name “f001” stored in the user table TB1 is read, and the feature point data of the read file name is read from the nonvolatile memory 101D and stored in the RAM 101C (step SA3). Then, the control unit 101 causes the display unit 102 to display a menu screen (FIG. 7) that prompts the user to place a finger on the fingerprint sensor 105A (step SA4).

  Here, when the user places the finger on the fingerprint sensor 105A and then performs an operation of pressing the OK button B1 in the menu screen (step SA5; YES), the fingerprint of the finger is read by the fingerprint sensor 105A, and the fingerprint is read. And the feature point data representing the feature points of the fingerprint are output from the sensor unit 105 to the control unit 101. Upon receiving the feature point data (step SA7), the control unit 101 compares the feature point data of the user name “ichiro” stored in the RAM 101C with the feature point data received from the sensor unit 105. If the fingerprint features represented by the feature point data do not match (step SA8; NO), the control unit 101 attempts to log in to the electronic paper device 10 by a person who does not have the user name “ichiro”. And an error message notifying that the electronic paper device 10 cannot be used is displayed on the display unit 102 (step SA9).

  On the other hand, when the feature of the fingerprint represented by the feature point data stored in the RAM 101C matches the feature of the fingerprint represented by the feature point data received from the sensor unit 105 (step SA8; YES), the control unit 101 performs electronic control. It is determined that the user of the paper device 10 has the right to use the electronic paper device 10, and the user is allowed to log in (step SA10). When the user is permitted to log in, the user can use various functions provided in the electronic paper device 10 until the user logs out. The electronic paper device 10 functions as a WWW server when a user logs in, and a device serving as a client can communicate with the electronic paper device 10.

(Operation when the file stored in the electronic paper device 10 is edited by the computer device 20 and stored in the computer device 20)
Next, an operation when editing an HTML file stored in the electronic paper device 10 will be described. A user who logs in to the electronic paper device 10 through the above-described operation first performs an operation to instruct execution of the browser program on the operation unit 207 in the computer device 20. Then, the browser program stored in the storage unit 205 is executed by the CPU 202.
(FIG. 8: S101), and a WWW browser window is displayed on the display unit 208. Next, the user inputs the URL (Uniform Resource Locator) of the electronic paper device 10 functioning as the WWW server into the address bar of the WWW browser (S102), and instructs the electronic paper device 10 to acquire a Web page. When the operation is performed, the communication unit 206 is controlled by the control unit 201, and an HTTP request for requesting a Web page is transmitted to the electronic paper device 10 via the wireless communication network 30 (S103).

  When the HTTP request is received by the communication unit 104 of the electronic paper device 10 (FIG. 9: Step SB1; YES), the control unit 101 generates an HTML file of a blank document and creates / creates the document in the WWW browser. A script for realizing the editing function is read from the nonvolatile memory 101D. Then, the control unit 101 incorporates a script into the generated HTML file (S104, step SB2), and controls the communication unit 104 to transmit the HTML file in which this script is incorporated to the computer device 20 (S105, step SB3). . When the HTML file is received by the communication unit 206, the HTML file in which the script is embedded is interpreted by the WWW browser, and as illustrated in FIG. 10, the image of the document represented by the HTML file and the creation / editing of the document An editing screen G including various buttons and text boxes related to the WWW browser is displayed in the window of the WWW browser (S106), and a document creation / editing function is realized in the WWW browser, so that a document related to the HTML file can be created / edited. It becomes possible.

  Next, the user performs an operation of clicking the item of the file button B on the toolbar of the WWW browser window. Then, the control unit 201 controls the display unit 208 to display the menu P1 as illustrated in FIG. When the user performs an operation of clicking an “Open” item in the menu P1, a menu screen for opening a document file is displayed on the display unit 208 as shown in FIG. When the user designates the electronic paper device 10 as the file location, a message requesting the file name of the HTML file stored in the electronic paper device 10 is transmitted from the computer device 20 to the electronic paper device 10 (S108). .

  When this message is received by the electronic paper device 10 (step SB7; YES), the control unit 101 acquires the file name of the HTML file stored in the non-volatile memory 101D (S109, step SB8). The file name is transmitted to the computer device 20 by controlling the communication unit 104 (S110, step SB9). When the file name is received by the computer device 20, the control unit 201 controls the display unit 208 to display the received file name in the region R in FIG. Here, when the user operates the operation unit 207 and clicks one of the file names displayed in the region R and performs an operation of designating a file to be opened (S111), the user is identified by the clicked file name. An HTTP request for requesting an HTML file is transmitted from the computer device 20 to the electronic paper device 10 (S112).

  When the HTTP request is received by the communication unit 104 (step SB4; YES), the control unit 101 reads out the requested HTML file from the nonvolatile memory 101D (S113, step SB5). Then, the control unit 101 controls the communication unit 104 to transmit the read HTML file to the computer device 20 (S114, step SB6). When the HTML file is received by the communication unit 206, the image of the document represented by the HTML file is displayed in the window of the WWW browser (S115), and the document related to the HTML file can be edited.

When the user can edit the document in the WWW browser, the user operates the operation unit 207 to edit the document. When there is an input from the user, such as when characters are input in the edit screen G of the WWW browser, the control unit 201 edits the HTML file in response to the input, and the input characters are displayed in the edit screen of the WWW browser. It is displayed (S116).

  When the user finishes editing the document, the user operates the operation unit 207 to perform an operation of clicking the item of the file button B on the toolbar displayed in the editing screen G of the WWW browser. Then, the control unit 201 controls the display unit 208 to display the menu P1 as illustrated in FIG. Then, when the user performs an operation of clicking the “Save As” item in the menu P1, a menu screen for saving the document is displayed on the display unit 208 as shown in FIG. Here, when the user inputs the file name of the document and sets the storage destination of the document in the computer device 20 and clicks the save button in the menu screen (S117), the document is encrypted. A message requesting an encryption key is transmitted from the communication unit 206 to the electronic paper device 10 (S118).

  When this message is received by the communication unit 104 (step SB10; YES), the control unit 101 sets an encryption key and a decryption key based on the user's fingerprint information output from the fingerprint sensor 105A when the user logs in. Generate (S119, Step SB11), and transmit the generated encryption key from the communication unit 104 to the computer device 20 (S120, Step SB12). When this encryption key is received by the communication unit 206, the control unit 201 encrypts the HTML file of the edited document with the received encryption key and stores it in a specific area (specific folder) of the storage unit 205. (S121). Also, the control unit 201 transmits the stored HTML file name to the electronic paper device 10 (S122). When this file name is received by the communication unit 104 (step SB13; YES), the control unit 101 stores the received file name in association with the generated encryption key and decryption key in the nonvolatile memory 101D. (S123, Step SB14).

(Operation when displaying a file stored in the computer device 20 on the computer device 20)
Next, an operation when the encrypted HTML file stored in the computer device 20 is displayed on the computer device 20 will be described. First, after logging in to the electronic paper device 10, the user activates a WWW browser on the computer device 20. Then, in a state where the electronic paper device 10 and the computer device 20 communicate with each other and the document creation / editing function is realized in the WWW browser, the user clicks the file button B item on the toolbar of the WWW browser window. Perform the operation. Then, the control unit 201 controls the display unit 208 to display the menu P1 as illustrated in FIG. Then, when the user performs an operation of clicking an “Open” item in the menu P1, a menu screen for opening a document file is displayed on the display unit 208 as shown in FIG.

  Here, the user sets the computer device 20 as the file location, inputs the file name of the file encrypted by the above-described operation as the file name of the document to be opened, and then clicks the open button in the menu screen. When the operation is performed (FIG. 14: S201), the HTML file having the input file name is read from the storage unit 205, and the file name of the read HTML file and a message requesting the decryption key are transmitted to the communication unit. The data is transmitted from 206 to the electronic paper device 10 (S202).

When the file name and message are received by the communication unit 104 (step SB15; YES), the control unit 101 reads the decryption key stored in the nonvolatile memory 101D in association with the received file name ( In step S203, step SB16), the read decryption key is transmitted from the communication unit 104 to the computer device 20 (step S204, step SB17). When the decryption key is received by the communication unit 206, the HTML file read from the storage unit 205 is decrypted (S205), and the document represented by the HTML file is displayed in the window of the WWW browser to edit the document. Is possible.

  In order to store the displayed document in the electronic paper device 10, the user first operates the operation unit 207 and clicks the item of the file button B on the toolbar displayed in the editing screen G of the WWW browser. Perform the operation. Then, the control unit 201 controls the display unit 208 to display the menu P1 as illustrated in FIG. Then, when the user performs an operation of clicking the “Save As” item in the menu P1, a menu screen for saving the document is displayed on the display unit 208 as shown in FIG. Here, when the user sets the storage destination of the document in the electronic paper device 10 and performs an operation of clicking the save button on the menu screen (S206), an HTML file representing the displayed document is received from the communication unit 206. It is transmitted to the electronic paper device 10 (S207). When the HTML file is received by the communication unit 104, the control unit 101 stores the received file in the nonvolatile memory 101D (S208).

(Operation when information stored in the server device is stored in the computer device 20)
Next, an operation when the HTML file stored in the server device 50 is stored in the computer device 20 will be described. First, after logging in to the electronic paper device 10, the user activates a WWW browser on the computer device 20. Then, in a state where the electronic paper device 10 and the computer device 20 communicate with each other and the document creation / editing function is realized in the WWW browser, the user clicks the file button B item on the toolbar of the WWW browser window. Perform the operation. Then, the control unit 201 controls the display unit 208 to display the menu P1 as illustrated in FIG. Then, when the user performs an operation of clicking the “Open file on server” item in the menu P1, a menu screen for inputting the URL of the file on the server as shown in FIG. Is displayed.

  Here, when the user operates the operation unit 207 to input the URL of the HTML file stored in the server device 50 and performs an operation to instruct to acquire a Web page from the server device 50 ( 15: S301), the communication unit 206 is controlled by the control unit 201, and an HTTP request for requesting an HTML file is transmitted to the server device 50 via the wireless communication network 30 and the Internet 40 (S302).

  When the HTTP request is received by the communication unit 506, the control unit 501 reads the requested HTML file from the storage unit 505 (S303), and controls the communication unit 506 to transmit the read HTML file to the computer apparatus 20. (S304). When the HTML file is received by the communication unit 206, the image of the document represented by the HTML file is displayed in the window of the WWW browser (S305), and the document related to the HTML file can be edited.

  Thereafter, when this HTML file is stored in the computer device 20, the same operations (S306 to S312) as those after S117 described above are performed. Thereby, the HTML file acquired from the server device 50 is encrypted by the encryption key generated based on the fingerprint information of the user of the electronic paper device 10 and stored in the computer device 20.

According to the present embodiment, it is possible to create and edit a document in the window of the WWW browser without the user performing a program installation operation. Since the computer device 20 includes a display device with a fast rewriting speed, the display follows the user's operation, and document creation / editing can be performed efficiently.
Further, according to the present embodiment, the file stored in the electronic paper device 10 is generated from the biometric information unique to the user in the electronic paper device 10 and encrypted with the encryption key transmitted from the electronic paper device 10. Remembered. When the encrypted and stored file is displayed / edited on the computer device 20, the decryption key is obtained from the electronic paper terminal and the file is decrypted. Thus, the electronic paper device 10 is required for file encryption / decryption. Since the electronic paper device 10 can be used only by a person who is permitted to use the electronic paper device 10, a third party cannot use only the computer device 20 to display or edit the file. Can be prevented.

(Operation when searching for a file stored in the electronic paper device 10 (1))
Next, an operation when searching for an HTML file stored in the electronic paper device 10 will be described. First, after logging in to the electronic paper device 10, the user activates a WWW browser on the computer device 20 (FIG. 17: S401). Next, the user inputs the URL of the electronic paper device 10 functioning as a WWW server and the URL of the Web page for transitioning to the file search screen into the address bar of the WWW browser (S402). When an operation for instructing acquisition of a web page from the paper device 10 is performed, the communication unit 206 is controlled by the control unit 201 and an HTTP request for requesting the web page is transmitted to the electronic paper device 10 via the wireless communication network 30. (S403).

  When the HTTP request is received by the communication unit 104 of the electronic paper device 10, the control unit 101 reads the HTML file representing the Web page shown in FIG. 18 from the nonvolatile memory 101D (S404), and the read HTML file Is transmitted to the computer apparatus 20 by controlling the communication unit 104 (S405). When the HTML file is received by the communication unit 206, the received HTML file is interpreted by the WWW browser, and as shown in FIG. 18, a Web page for transitioning to a file search screen is displayed on the WWW browser. It is displayed in the window (S406).

  Next, the user performs an operation of clicking the “OK” button in the Web page shown in FIG. 18 (S407). Then, the control unit 201 transmits an HTTP request for requesting an HTML file of a Web page having a user interface for performing a file search to the electronic paper device 10 via the wireless communication network 30 (S408).

  When the HTTP request is received by the communication unit 104 of the electronic paper device 10, the control unit 101 generates an HTML file representing the requested Web page and a search script that causes the WWW browser to search for the file. Reading from the non-volatile memory 101D (S409). Then, the control unit 101 controls the communication unit 104 to transmit the read HTML file and search script to the computer device 20 (S410). When the HTML file and search script are received by the communication unit 206, the received HTML file is interpreted by the WWW browser and the received search script is executed (S411). Then, the search Web page illustrated in FIG. 19 is displayed in the window of the WWW browser (S412), and the function of searching for the file is realized in the computer device 20.

  Next, the user selects a place where the file search is performed. Specifically, in the screen shown in FIG. 19, the name of the device storing the file is displayed. For example, when searching for a file in the electronic paper device 10, the user operates the operation unit 207 to select (click) the item “electronic paper device” shown in FIG. 19. Then, after the user operates the operation unit 207 to input a character string as a file search keyword into the text box BX of the web page, the user performs an operation of clicking the “search” button in the web page (S413).

  When this operation is performed, the control unit 201 controls the communication unit 206 to transmit a message requesting an index file to the electronic paper device 10 (S414). Upon receiving this message, the electronic paper device 10 searches the nonvolatile memory 101D for an index file (S415). If the index file is not stored in the nonvolatile memory 101D, the control unit 101 transmits a message indicating that the index file is not stored from the communication unit 104 to the computer device 20 (S416).

  When this message is received by the communication unit 206, the control unit 201 controls the communication unit 104 to transmit a file request message for requesting an HTML file stored in the electronic paper device 10 to the electronic paper device 10. (S417). The electronic paper device 10 that has received this message reads the HTML file stored in the nonvolatile memory 101D, and transmits the read HTML file to the computer device 20 (S418).

  When the computer device 20 receives the HTML file transmitted by the electronic paper device 10, the computer device 20 stores the received HTML file in the RAM 204. Then, the contents of the document represented by the stored HTML file are analyzed to generate an index file (S419). When an index file is generated, words are extracted from the document as in a known index search, and a file containing the extracted words is associated with the extracted words. . When the generation of the index file ends, the control unit 201 first transmits the generated index file to the electronic paper device 10 (S420). When receiving the transmitted index file, the electronic paper device 10 stores the received index file in the nonvolatile memory 101D (S421).

  Further, the computer device 20 that has finished transmitting the index file to the electronic paper device 10 searches the generated index file for the keyword input in the text box BX (S422). When a keyword is found in the index file, the file name associated with the keyword is displayed in the window of the WWW browser as shown in FIG. 20 (S423).

(Operation when searching for a file stored in the electronic paper device 10 (2))
Next, an operation when an index file is stored in the electronic paper device 10 when searching for an HTML file stored in the electronic paper device 10 will be described. Also in this operation, the operations from step S401 to S414 in FIG. 17, that is, the user executes the browser program after logging in to the electronic paper device 10, and the “search” button on the Web page shown in FIG. The operation until the message requesting the index file is sent to the electronic paper device 10 is performed in the same manner as described above.

  The electronic paper device 10 that has received the message requesting the index file searches the nonvolatile memory 101D for the index file (FIG. 21: S415). Here, when the index file is stored in the nonvolatile memory 101D, the control unit 101 reads the stored index file, and transmits the read index file from the communication unit 104 to the computer device 20 (S501).

  When the computer device 20 receives the index file transmitted by the electronic paper device 10, the computer device 20 stores the received index file in the RAM 204. Then, the computer device 20 searches the index file stored in the RAM 204 for the keyword input in the text box BX (S502). When a keyword is found in the index file, the file name associated with the keyword is displayed in the window of the WWW browser as shown in FIG. 20 (S503).

(Operation when searching for a file stored in the computer 20 (1))
Next, an operation when searching for an HTML file for the electronic paper device 10 stored in the computer device 20 will be described. Also in this operation, the operations from Steps S401 to S412 in FIG. 17, that is, from when the user logs in to the electronic paper device 10 until the browser program is executed and the Web page shown in FIG. 19 is displayed. The operation is performed in the same manner as described above.

  Now, in a state where the operations from step S401 to step S412 are performed and the screen shown in FIG. 19 is displayed, the user selects a location where a file to be searched is stored. Specifically, the user operates the operation unit 207 to select the item “My Computer” shown in FIG. The user then operates the operation unit 207 to input a character string as a file search keyword into the text box BX of the web page, and then clicks a “search” button in the web page (FIG. 22: S601).

  When this operation is performed, the control unit 201 searches the storage unit 205 for an index file (S602). Here, when the index file is not stored in the storage unit 205, the control unit 201 is stored in a specific area of the storage unit 205 (an area where the HTML file created by the above-described operation is stored). An index file is generated by analyzing the contents of each document represented by the plurality of HTML files. Specifically, first, a file name of each HTML file stored in the storage unit 205 and a message requesting a decryption key for each file are transmitted from the communication unit 206 to the electronic paper device 10 (S603).

  When the file name and message are received by the communication unit 104, the control unit 101 reads the decryption key stored in the nonvolatile memory 101D in association with the received file name (S604), and reads the decryption that has been read. The key is transmitted from the communication unit 104 to the computer device 20 (S605). When the decryption key is received by the communication unit 206, the HTML file encrypted and stored in the storage unit 205 is decrypted (S606).

  Then, the control unit 201 analyzes the contents of the document represented by the decrypted HTML file and generates an index file (S607). When the generation of the index file is completed, the control unit 201 searches the index file that has generated the keyword input in the text box BX (S608). When a keyword is found in the index file, the file name associated with the keyword is displayed in the window of the WWW browser as shown in FIG. 20 (S609).

  The control unit 201 controls the communication unit 206 to transmit a message requesting an encryption key for encrypting the generated index file to the electronic paper device 10 (S610). When this message is received by the communication unit 104, the control unit 101 generates an encryption key and a decryption key based on the user's fingerprint information output from the fingerprint sensor 105A when the user logs in (S611). The generated encryption key is transmitted from the communication unit 104 to the computer device 20 (S612). When this encryption key is received by the communication unit 206, the control unit 201 encrypts the generated index file with the received encryption key and stores it in the storage unit 205 (S613). In addition, the control unit 201 transmits the file name of the stored index file to the electronic paper device 10 (S614). When the file name is received by the communication unit 104, the control unit 101 stores the received file name in association with the generated encryption key and decryption key in the nonvolatile memory 101D (S615).

(Operation when searching for a file stored in the computer 20 (2))
Next, an operation when an index file is stored in the computer device 20 when searching for an HTML file stored in the computer device 20 will be described. Also in this operation, the operations from Steps S401 to S412 in FIG. 17, that is, from when the user logs in to the electronic paper device 10 until the browser program is executed and the Web page shown in FIG. 19 is displayed. The operation is performed in the same manner as described above.

  Now, in a state where the operations from step S401 to step S412 are performed and the screen shown in FIG. 19 is displayed, the user selects a location where a file to be searched is stored. Specifically, the user operates the operation unit 207 to select the item “My Computer” shown in FIG. Then, the user operates the operation unit 207 to input a character string as a file search keyword into the text box BX of the Web page, and then performs an operation of clicking a “Search” button in the Web page (FIG. 23: S701).

  When this operation is performed, the control unit 201 searches the storage unit 205 for an index file (S702). Here, when the index file is stored in the storage unit 205, the control unit 201 sends the file name of the stored index file and a message requesting the decryption key from the communication unit 206 to the electronic paper device 10. (S703).

  When the file name and message are received by the communication unit 104, the control unit 101 reads the decryption key stored in the nonvolatile memory 101D in association with the received file name (S704), and reads the decryption that has been read. The key is transmitted from the communication unit 104 to the computer device 20 (S705). When the decryption key is received by the communication unit 206, the index file is read from the storage unit 205, and the read index file is decrypted by the received decryption key (S706).

  When the decoding of the index file is completed, the control unit 201 searches the index file that has generated the keyword input in the text box BX (S707). When a keyword is found in the index file, the file name associated with the keyword is displayed in the window of the WWW browser as shown in FIG. 20 (S708).

[Modification]
As mentioned above, although embodiment of this invention was described, this invention is not limited to embodiment mentioned above, It can implement with another various form. For example, the present invention may be implemented by modifying the above-described embodiment as follows.

  The communication network that relays communication between the electronic paper device 10 and the computer device 20 may be a wired communication network instead of a wireless communication network. Further, the electronic paper device 10 and the computer device 20 may communicate with each other wirelessly (communication by radio waves or light) or via a cable connection without going through a communication network.

  In the above-described embodiment, the script realizes the document creation / editing function in the WWW browser. However, the script may realize a function such as a form creation / editing function and a drawing function. . Further, the file representing the document is not limited to the format according to HTML, but may be another file format. Further, the program that causes the computer device 20 to realize the content editing function is not limited to the program described according to the script language, and may be a program described according to another language.

Further, in the electronic paper device 10 that has received the HTTP request, an HTML file that does not have a new content may be generated, and the selected script may be incorporated into the generated HTML file and transmitted to the computer device 20. When this HTML file is edited in the WWW browser, a new file name may be added to the HTML file and stored in the electronic paper device 10. According to this aspect, not only can an already created HTML file be edited, but also a new HTML file can be created and stored in the electronic paper device 10.

  In the above-described embodiment, when the electronic paper device 10 performs user authentication and generation of an encryption key / decryption key, a fingerprint is used. However, it differs depending on the user, such as an iris or finger vein pattern. If it is a thing, you may make it authenticate a user and produce | generate an encryption key / decryption key using other biometric information instead of a fingerprint. Further, the information based on the generation of the encryption key / decryption key is not biometric information but may be other information such as an identifier uniquely assigned to the user as long as the information uniquely identifies the user. Good.

  In the embodiment described above, the encryption key and the decryption key are generated based on the fingerprint information representing the user's fingerprint, but the MAC (Media Access Control) address of the electronic paper device 10 and the biometric information unique to the user are stored. An encryption key and a decryption key may be generated based on both. According to this configuration, it is possible to perform file encryption and decryption only when a specific user uses a specific electronic paper device 10, and the security of the file can be increased. Further, when a paid document file is downloaded from the server device 50, the downloaded file is encrypted / decrypted with an encryption key / decryption key generated based on the MAC address and the user's biological information. Also good.

  In the above-described embodiment, it is preferable to clear the information in the cache of the WWW browser after the WWW browser is terminated.

  In the above-described embodiment, when a file is decrypted by the computer device 20 and then encrypted again and stored in the computer device 20, the computer device 20 requests an encryption key from the electronic paper device 10, and the electronic paper The apparatus 10 may newly generate an encryption key and a decryption key based on the fingerprint information output from the sensor unit 105, and may transmit the generated encryption key to the computer apparatus 20. The fingerprint information varies slightly every time the user logs in. According to this configuration, since the same encryption key is not reused and one encryption key and decryption key are associated with one file, the security of the file can be improved.

  In the embodiment described above, it is also possible to search the HTML file stored in the server device 50 using the search script. Specifically, in the state in which the screen shown in FIG. 19 is displayed, the user clicks the item “network”, inputs a keyword in the text box BX, and clicks the search button. When the search button is clicked, the computer device 20 displays a screen for inputting a URL representing the location where the HTML file is stored in the server device 50. Here, when a URL is input, a message requesting an index file is transmitted to the server device 50 specified by the URL. The server device 50 that has received this message transmits the stored index file to the computer device 20 when the index file is stored. When the computer device 20 receives the index file, the computer device 20 searches the received index file for the keyword input in the text box BX.

When the index file is transmitted from the server device 50 to the computer device 20, first, an encryption key is acquired from the electronic paper device 10, the acquired encryption key is transmitted to the server device 50, and the server device 50 Then, the index file may be encrypted and transmitted to the computer apparatus 20. Then, the computer device 20 acquires from the electronic paper device 10 a decryption key for decrypting the encrypted index file (a decryption key paired with the encryption key that encrypted the index file), and the acquired decryption key The keyword file may be searched by decrypting the index file.
Alternatively, the index file acquired from the server device 50 may be encrypted with an encryption key, then transmitted to the server device 50, and stored in the server device 50. Next, when the computer device 20 searches for a file stored in the server device 50, the computer device 20 acquires the index file encrypted and stored in the server device 50, and the acquired index file is stored in the server device 50. The search may be performed after decryption.
If the index file is not stored in the server device 50, the HTML file stored in the server device 50 is acquired, an index file is generated from the acquired file, and a keyword is searched in the generated index file. You may do it.

When the server device 50 provides an HTML file to the user for a fee, an index file generated in advance in the server device 50 is stored, and the index file is acquired by the computer device 20 and searched. It may be.
Also in this case, the index file in the server device 50 may be encrypted and transmitted to the computer device 20, and the search may be performed after the index file is decrypted in the computer device 20.

  In the embodiment described above, the electronic paper device 10 may generate an index file for files stored in the electronic paper device 10. Then, the index file generated by the electronic paper device 10 may be transmitted to the computer device 20 and searched by the computer device 20. When the electronic paper device 10 generates an index file, it is preferable to generate the index file while the display device control processing such as processing related to display is not performed.

In the above-described embodiment, each device encrypts and stores an HTML file and an index file, but may store them without performing encryption.
In the above-described embodiment, the content data is an HTML file, but the data representing the content is not limited to the HTML file, and may be another file format.

It is the figure which showed the apparatus which concerns on embodiment of this invention. 2 is a hardware configuration diagram of a computer device 20. FIG. 2 is a hardware configuration diagram of a server device 50. FIG. 2 is a hardware configuration diagram of the electronic paper device 10. FIG. It is the figure which illustrated the format of user table TB1. 3 is a flowchart showing a flow of processing performed by the electronic paper device 10. 3 is a diagram showing a screen displayed on the electronic paper device 10. FIG. It is a sequence diagram for demonstrating operation | movement of embodiment. 3 is a flowchart showing a flow of processing performed by the electronic paper device 10. FIG. 6 is a diagram illustrating a screen displayed on the computer device 20. FIG. 6 is a diagram illustrating a screen displayed on the computer device 20. FIG. 6 is a diagram illustrating a screen displayed on the computer device 20. FIG. 6 is a diagram illustrating a screen displayed on the computer device 20. It is a sequence diagram for demonstrating operation | movement of embodiment. It is a sequence diagram for demonstrating operation | movement of embodiment. FIG. 6 is a diagram illustrating a screen displayed on the computer device 20. It is a sequence diagram for demonstrating operation | movement of embodiment. FIG. 6 is a diagram illustrating a screen displayed on the computer device 20. 5 is a diagram illustrating a search screen displayed on the computer device 20. FIG. 5 is a diagram illustrating a search screen displayed on the computer device 20. FIG. It is a sequence diagram for demonstrating operation | movement of embodiment. It is a sequence diagram for demonstrating operation | movement of embodiment. It is a sequence diagram for demonstrating operation | movement of embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Electronic paper apparatus, 20 ... Computer apparatus, 30 ... Wireless communication network, 40 ... Internet, 50 ... Server apparatus, 101 ... Control part, 101A ... CPU, 101B ... ROM, 101C ... RAM, 101D ... nonvolatile memory, 102 ... display unit, 103 ... operation unit, 104 ... communication unit, 105 ... sensor unit, 105A ... Fingerprint sensor, 201 ... control unit, 202 ... CPU, 203 ... ROM, 204 ... RAM, 205 ... storage unit, 206 ... communication unit, 207 ... operation unit, 208: Display unit, 501 ... Control unit, 502 ... CPU, 503 ... ROM, 504 ... RAM, 505 ... Storage unit, 506 ... Communication unit, 507 ... Operation part

Claims (7)

Storage means for storing content data representing content, page data representing a page for retrieving the content, and a program for realizing a function for retrieving the content data;
Page request message receiving means for receiving a page request message for requesting the page data;
When the page request message is received by the page request message receiving means, the program and the page data are read from the storage means, and the read program and page data are transmitted to the external computer. Content transmitting means for transmitting to the device;
A display device comprising: a display element having a storage property; and display means for displaying content represented by content data stored in the storage means;
Page request message transmitting means for transmitting the page request message;
Content receiving means for receiving the program and page data transmitted from the content transmitting means;
Browser means for displaying the content of page data and realizing the function of searching for the content data by executing the program received by the content receiving means;
Search system having The computer device includes:
When the program is executed by the browser unit, an index file generation unit that generates an index file in which a word included in content represented by content data is associated with a file name of content data including the word is realized. And
The search system according to claim 1, wherein a keyword input by a user is searched in the index file, and a search result is displayed by the browser means. The display device
Unique information receiving means for receiving unique information for uniquely identifying a user;
Key generation means for generating an encryption key and a decryption key based on the unique information received by the unique information receiving means;
The search system according to claim 2, further comprising: a key transmission unit that transmits the key generated by the key generation unit to the external computer device. The computer device, when the program is executed by the browser means,
An encryption unit that receives the encryption key transmitted from the key transmission unit and encrypts the index file generated by the index file generation unit with the received encryption key;
An index file transmitting means for transmitting the index file encrypted by the encryption means to the display device;
The display device
The search system according to claim 3, wherein the index file transmitted by the index file transmission unit is received, and the received index file is stored in the storage unit. The computer device includes:
Obtaining an index file stored in the storage means and a decryption key for decrypting the index file from the display device;
The search system according to claim 4, wherein a keyword input to a page represented by the page data is searched in the index file, and a search result is displayed by the browser means.   The search system according to claim 3, wherein the unique information is biological information of a user of the display device. The computer device includes:
Content data acquisition means for acquiring content data stored in the storage means;
The search system according to any one of claims 2 to 6, wherein the index file generation unit generates the index file from the content data acquired by the content data acquisition unit.

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