JP2009187282A - Information terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information terminal which can prevent the leakage of important information by simple security control and can perform the processing of write or the like to Web site information even when not connected to a network. <P>SOLUTION: An information display terminal is the information terminal provided with attachable/detachable one, two or more information display sheet devices and holding means. The information terminal includes: an input means; a communication means for discriminating a network class connected with network communication processing; an access control means for controlling access to a prescribed access destination using the respective information display sheet devices on the basis of the network class; and a display control means for controlling display to the display part of the corresponding information display sheet device using the site information of the access destination corresponding to the respective information display sheet devices and input data from the input means and performing different display control according to the class of the connected network. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an information terminal, and can be applied to an information terminal capable of storing and displaying information such as a schedule and an address book using electronic paper, for example.

  In recent years, development of electronic paper technology has progressed as a display device for electronic information having visibility and portability, which are advantages of paper. Electronic paper is an image that displays an image by applying an electric field between two substrates. Once an image is displayed, it is a reflection that continues to display the same image for a long time without applying voltage to each pixel. A type display.

  This electronic paper, for example, is thinner and lighter than a liquid crystal display device, and further saves power, so that it is strongly required to be used as a display device in the future.

  By the way, notebooks, for example, have been widely used since ancient times as items for easily writing schedules, address books, memos, and the like. Therefore, a portable information terminal that can be written down like a notebook using electronic paper or can acquire necessary electronic information through a network is expected (see Non-Patent Document 1).

  When providing a portable information terminal that can be connected to a network, it is necessary to provide communication security and user security according to the usage mode of the portable information terminal.

  Patent Document 1 describes a technique in which a wireless device has a function of estimating a current situation and performs control according to the situation estimated in the wireless device.

  In Patent Document 2, the information processing apparatus has a GPS function, and security restrictions based on received GPS information (for example, file access right, specific file encryption, network service setting, browser security, virus checker security, specific application) This technology describes the technology that prohibits startup.

Special table 2004-535000 gazette JP 2006-127293 A "FLEPia (registered trademark)" press release, Fujitsu Frontech Limited Fujitsu Laboratories Ltd., April 20, 2007, search on December 21, 2007, Internet, http://www.frontech.fujitsu.com/ release / prs070420.html

  Since a portable information terminal using electronic paper as described in Non-Patent Document 1 has a communication function, it can easily acquire Web site information on the Web. For example, shared information such as in-house schedule information and purchase information is generally shared on a website, but such shared information can be acquired using this type of portable information terminal.

  However, for example, in order to reduce the influence of virus infection, it is desirable to restrict access to malicious sites with viruses, etc., but this type of portable information terminal is characterized by easy and simple processing. Therefore, application of complicated security control as in the past is not suitable.

  In addition, the technologies described in Patent Documents 1 and 2 are technologies that assume a display device that does not have memory characteristics, such as a liquid crystal display device, and are connected to a network when acquiring Web data from a Web site. It is assumed that

  Even if this type of portable information terminal is not connected to a network, electronic paper can hold display information at the time of connection. In consideration of user convenience, it is desirable that Web site information can be written even when not connected to a network.

  However, even if an attempt is made to input information when not connected to the network, the information displayed on the electronic paper is an image displayed with the electronic paper characteristics, and the displayed Web information is displayed on the portable information terminal. It is not retained. Therefore, it is not possible to perform processing such as writing information on the Web site as it is.

  Furthermore, this type of portable information terminal can be taken outside while displaying the important information as described above for a long time. Therefore, it is also desired to prevent leakage of important information.

  As described above, according to the present invention, leakage of important information can be prevented by simple security control, not complicated security control, and writing to website information can be performed even when the network is not connected. An information terminal capable of performing processing is provided.

  In order to solve such a problem, the information display terminal according to the first aspect of the present invention is provided with one or more detachable information display sheet devices each having display control means for the display unit, and the information display sheet device. An information terminal comprising a holder means capable of: (1) an input means for capturing input data by a user operation; and (2) a communication means for performing network communication processing and discriminating a connected network type. And (3) access control means for controlling access to a predetermined access destination using each information display sheet device based on the network type, and (4) site information of an access destination corresponding to each information display sheet device The display data on the display unit of the corresponding information display sheet device is controlled using the input data from the input means, and connected to the network Characterized in that it comprises a display control means for performing different display control depending of the network type.

  According to the present invention, leakage of important information can be prevented by simple security control, not complicated security control, and processing such as writing to website information can be performed even when not connected to the network. be able to.

(A) 1st Embodiment Below, the 1st Embodiment of the information terminal of this invention is described in detail, referring drawings.

  In the first embodiment, as an example of the information terminal of the present invention, a case where the present invention is applied to an electronic paper system notebook to which one or a plurality of electronic papers can be attached is illustrated.

(A-1) Configuration of First Embodiment FIG. 1 is an external perspective view showing an external image of an electronic paper system notebook according to the first embodiment. In FIG. 1, an electronic paper system notebook 1 according to the first embodiment includes at least a holder portion 2 and an electronic paper display portion (hereinafter also referred to as a sheet portion) 3.

  The holder unit 2 is connected to the sheet unit 3 by inserting one or a plurality of electronic papers of the sheet unit 3, and can bundle a plurality of electronic papers. Moreover, the holder part 2 can take various forms. In FIG. 1, the shape which has a bottom part and covers one long side and one short side of the sheet | seat part 3 is illustrated as the example.

  The electronic paper display unit (sheet unit) 3 has one or a plurality of electronic papers. The electronic paper display unit 3 includes a display part as electronic paper and a control unit that performs display control thereof. In the following description, the electronic paper display unit (sheet unit) 3 exemplifies a case where a plurality of sheets are inserted into the holder unit 2, but in the case where the electronic paper display unit (or sheet unit) 3 is simply expressed. One electronic paper display unit is shown. That is, the functions described below are described as functions provided in one electronic paper display unit 3.

  The holder unit 2 includes a control unit that performs operation control on the inserted sheet unit 3. The seat unit 3 also includes control means. Although the hardware configuration of the control means of the holder unit 2 and the sheet unit 3 is omitted, for example, a unit including a CPU, ROM, RAM, EEPROM, or the like can be applied.

  FIG. 2 is a functional block diagram showing a main internal configuration of the electronic paper system notebook 1 according to the first embodiment.

  In FIG. 2, the functions of the electronic paper system notebook 1 of the first embodiment mainly include a communication function unit 10, an electronic paper display control function unit 20, an electronic paper display function unit 30, and a character input function unit 40. It is what you have.

  Further, the communication function unit 10 includes at least an antenna function unit 11, a web access function unit 12, and an access control function unit 13, and the electronic paper display control function unit 20 includes a web display control function unit 21, web operation data storage. It has at least a function unit 22 and a Web input data storage function unit 23.

  Here, it is desirable that the electronic paper display control function unit 20 and the electronic display function unit 30 are function units executed in each electronic paper (that is, the sheet unit 3). In addition, the communication function unit 10 and the character input function unit 40 can be applied as function units that are executed by either the electronic paper (that is, the sheet unit 3) or the holder unit 2.

  The communication function unit 10 performs network communication. The communication function unit 10 performs wireless communication, and the wireless communication method is not particularly limited and can be widely applied. For example, various wireless LAN systems (for example, a so-called WiFi (registered trademark) system, a WiMAX (registered trademark), a short-range wireless communication system such as Bluetooth (registered trademark)), and the like can be applied.

  The antenna function unit 11 captures an incoming radio wave, performs a reception process such as a demodulation process, and a transmission process such as a modulation process of transmission data to emit a radio signal.

  The antenna function unit 11 determines a connected network based on a received radio wave, and gives the determination result to the access control function unit 13. Thereby, since the network to which the electronic paper system notebook 1 belongs can be determined, it can be determined whether the network is within the in-house network range or the outside network range.

  The access control function unit 13 receives a determination result of the network to which the electronic paper system notebook 1 belongs from the antenna function unit 11, and performs access control to the network based on the determination result.

  Specifically, when the determination result is within the in-house network range, the access control function unit 13 allows access to the website through the in-house network. On the other hand, when the determination result is within the external network range, the access control function unit 13 does not allow access to the Web site through the network.

  That is, the access control function unit 13 issues an access instruction to the Web access function unit 12 when it is within the corporate network range. Further, when it is within the outside network range, the access control function unit 13 does not give an access instruction to the Web access function unit 12.

  For example, if the external network is a public wireless LAN, the Web access control function unit 13 holds an ID and password for connecting to the public wireless LAN, and access is permitted only when authentication is successful. You may do it.

  As described above, by restricting access to the external network, it is possible to restrict access to a malicious Web site, thereby suppressing the influence of virus infection.

  Further, the access control function unit 13 instructs the web access function unit 12 to access the website when the network changes from the outside network to the in-house network based on the determination result from the antenna function unit 11. The input data stored in the Web input data storage function unit 23 is read, and the input data is transmitted to a corresponding Web site on the in-house network.

  The access control function unit 13 may automatically perform an access instruction or input data transmission process when moving from the external network to the internal network. In addition, an access instruction to the website is automatically issued through the in-house network, and then the user is notified of the successful access, and the input data transmission process is performed after receiving the data transmission operation instruction from the user. Good. Further, the user may be notified that the user is within the range of the in-house network, and after receiving an operation instruction from the user, an access instruction to the website and an input data transmission process may be performed.

  Furthermore, the access control function unit 13 notifies the Web display control function unit 21 (to be described later) that Web access is restricted when the access control function unit 13 is in an external network where access is restricted.

  When receiving an access instruction from the access control function unit 12, the Web access function unit 12 performs an access process to the Web site through the antenna function unit 11 through the network. Also, the web access function unit 12 receives desired website information from the website that has been successfully accessed via the antenna function unit 11, and gives the website information to the web display control function unit 21.

  When the access control function unit 13 receives access restriction, the Web access function unit 12 does not perform access processing to the network.

  The electronic paper display control function unit 20 converts the website data acquired from the communication function unit 10 into display data, and provides the display data to the electronic paper display function unit 30. The electronic paper display control function unit 20 has a data separation function for separating display data into vertical and horizontal driver signals.

  The web display control function unit 21 controls processing such as creation and editing of website information based on the website data acquired through the web access function unit 12 and the input data input by the user. . The input data includes operation instruction data and character data as will be described later.

  Here, when the notebook 1 is within the in-house network range, the in-house network is accessible, so the Web display control function unit 21 can acquire the website data from the website on the in-house network. In this case, the Web display control function unit 21 receives user operation and acquires input data from the character input function unit 40 via the Web input data storage function unit 23. Thereby, the Web display control function unit 21 performs processing using the Web site data and the input data.

  On the other hand, when the notebook 1 is within the access-restricted outside network range, the Web site cannot be accessed through the network, and Web data cannot be acquired. In this case, the Web display control function unit 21 reads Web operation data from a Web operation data storage function unit 22 (to be described later), reads input data from the Web input data storage function unit 23, and performs processing on the Web site information. Thereby, even when the website cannot be accessed due to the access restriction, the process for the website information can be performed.

  Further, the Web display control function unit 21 performs display restriction such that part or all of the display is erased with respect to the Web site information to be displayed based on the Web site data to be displayed.

  Here, various methods can be applied as a method of determining the display restriction of part or all of the display information by the Web display control function unit 21.

  For example, for important information that is difficult to leak outside the company, information indicating whether the entire display of the website is deleted or whether it is partially deleted, the file name of the website, the header portion of the document data, etc. It is described in. Then, it is possible to apply a method for determining what kind of erasure is performed by the Web display control function unit 12 determining the information.

  As for how to implement partial or full display restriction, for example, in electronic paper, by applying a voltage corresponding to the part of the part to be erased, only part of the part can be erased. it can. Further, the entire website information can be erased by applying a voltage to the entire surface of the electronic paper.

  The web display control function unit 21 may delete the web operation data stored in the web operation data storage function unit 22 for important information.

  The Web operation data storage function unit 22 stores Web operation data of the Web site, receives a read instruction from the Web display control function unit 21, and stores the stored Web operation data as a Web display control function unit. 21 is given.

  The Web input data storage function unit 23 stores input data from the character input function unit 40. The Web input data storage function unit 23 receives a read instruction from the Web display control function unit 21 and gives the stored input data to the Web display control function unit 21.

  The electronic paper display function unit 30 outputs and displays it on the display part of the sheet unit 3 based on the display data from the electronic paper display control function unit 20.

  FIG. 3 is a configuration diagram showing an internal configuration of the electronic paper display function unit 30. In FIG. 3, the electronic paper display control unit 30 includes at least a vertical driver unit 1111, a horizontal driver unit 1112, a drive portion 1113, and a display portion 1114.

  The vertical driver unit 1111 receives a vertical driver signal from the Web display control function unit 21 through S1111 and transmits a display signal to the drive unit 1113 based on the vertical driver signal. It is.

  The horizontal driver unit 1112 receives a horizontal driver signal from the Web display control function unit 21 through S1112 and transmits a display signal to the drive unit 1113 based on the horizontal driver signal. It is.

  The drive portion 1113 receives signals for display from the vertical driver unit 1111 and the horizontal driver unit 1112, and switches the display of the display portion 1114 by applying a positive or negative voltage to the display portion 1114. It is.

  The display portion 1114 switches the display on the front plate of the electronic paper according to the voltage from the drive portion 1113. The display method of the display portion 1114 is not particularly limited, and for example, a microcapsule type electrophoretic method, a cholesteric liquid crystal method, an electrochromic method, or the like can be applied.

  The character input function unit 40 reads a locus handwritten on the display surface of the sheet unit 3 by a user using a dedicated pen, and captures input data according to the input locus. The character input function unit 40 provides input data to the Web input data storage function unit 23.

  Various techniques can be applied as the character input function unit 40. For example, a method of reading information written by a stylus pen, a method of reading information written by a digital pen, and the like can be widely applied.

  For example, as a character input method using a stylus pen, the display portion 113 of the electronic paper display function unit 30 of the sheet unit 3 detects the position coordinates (x coordinate, y coordinate) of the tip of the stylus pen, and reads the locus. The method can be applied.

  For example, as a character input method using a digital pen, for example, an Anoto pattern method (a character input method using a camera-equipped electronic pen) can be applied, for example, fine dots are displayed on the display portion of the sheet unit 3, This is a method of reading an input trajectory by reading a dot with an electronic pen camera. For example, the Anoto Group, the mechanism of the Anoto function, the Internet, search on December 21, 2007, http://functionality.anoto.co.jp The technology disclosed in /cldoc/ajp24.htm can be applied. In this case, the holder unit 2 is provided with an analysis unit for reading and analyzing the input locus.

  In addition, for example, an ultrasonic method (for example, an air pen (registered trademark), etc.) can be applied, and the memory unit receives ultrasonic waves at two locations with a pen that emits ultrasonic waves, calculates pen coordinates by triangulation, and accumulates data. The method disclosed in, for example, Pentel Co., Ltd., Product Information, Principle of Operation-Digital Pen, Internet, December 21, 2007, http://www.airpen.jp/products/dousagenri.html Can be applied. In this case, the holder unit 2 is provided with a receiving unit and an analyzing unit that receive ultrasonic waves from the dedicated pen.

  The character input function unit 40 has a data separation function and a character recognition function.

  The data separation function separates user input data into character data (for example, data that traces the input locus of a dedicated pen) and operation instruction data (for example, data such as clicks and drags). Is provided to the Web input data storage function unit 23.

  Here, as a data separation method, various methods can be applied according to the character input method of the character input function unit 40. For example, when a method using a stylus pen is applied as a character input method, the display portion 1113 of the electronic paper display function unit 30 of the sheet unit 3 includes a character input display portion for inputting characters with the stylus pen and an operation button with the stylus pen. And an operation instruction display part that allows pressing (clicking). When the input data from the character input function unit 40 is an area indicated by the character input display portion where the location indicated by the stylus pen is an area indicated by the character input display portion, the data is determined to be character data, and the area indicated by the operation instruction display portion In this case, a method for determining that the data is operation instruction data can be applied.

  The character recognition function receives character data separated by the data separation function, recognizes an input character based on the character data, converts the character to a character code based on the recognition result, and supplies the character code to the Web input data storage function unit 23. Is.

  Here, the character recognition processing by the character recognition function can widely apply existing character recognition processing. For example, a method for recognizing a character code by performing pattern matching with a character code database according to a recognition algorithm based on handwritten input start position (x coordinate, y coordinate) and handwritten trajectory data in a region of a character input display portion. Applicable.

  In this case, the character recognition function gives the recognized character code and the first position data (coordinate value) of the trajectory data to the Web input data storage function unit 23.

  Note that the type of character to be recognized depends on the character code database, but can be widely applied, for example, kanji, hiragana, katakana, alphabetic characters, numbers, and symbols.

(A-2) Operation of First Embodiment Next, a processing operation in the electronic paper system notebook 1 of the first embodiment will be described with reference to the drawings.

(A-2-1) Case of being within the in-house network range FIG. 4 is a flowchart when the notebook 1 is used to access a Web site for processing when the notebook 1 is in the range of the in-house network. is there.

  First, the network to which the notebook 1 belongs is always determined by the antenna function unit 11, and the determination result is given to the access control function unit 13.

  When an access request to the website is given by a user operation, the access control unit function unit 13 determines that the notebook 1 is within the in-house network range based on the determination result from the antenna function unit 11. (Step S101).

  Then, an access instruction to the Web site on the in-house network is given from the access control function unit 13 to the Web access function unit 12 (Step S102), and the Web access function unit 12 performs access processing to the Web site.

  When the access to the website is successful, the website information transmitted from the website is given to the web access function unit 12 via the antenna function unit 11 and given to the web display control function unit 21. Web site data from the Web site is converted into display data by the Web display control function unit 21, and the display data is given to the electronic paper display function unit 30. Thereby, the website information is displayed on the display portion of the electronic paper (step S103).

  Further, the Web display control function unit 21 stores the Web operation data acquired from the Web site in the Web operation data storage function unit 22 (Step S104).

  Here, FIG. 4 shows that the web operation data is saved every time the web data is acquired from the website. If the web operation data of the website can be saved, the web operation data needs to be saved thereafter. There is no.

  When input processing is performed on the character input function unit 40 by a user operation, input data by the user operation is given to the character input function unit 40, and the operation instruction data and character data determined based on the input data are This is given to the Web input data storage function unit 23 (step S105).

  Then, the Web display control function unit 21 performs processing for the Web site information using the Web data acquired from the Web site and the operation instruction data and character data read from the Web input data storage function unit 23 (step). S106).

  As processing for the Web site information, for example, in the case of form input (schedule data input, etc.), in order to transmit the data input in the form to a designated location on the Web site, the communication instruction unit 1082 is notified. Send command and send data.

  Also, for example, when pointing to a link (such as when selecting a date for inputting schedule data), a command to acquire link destination data is acquired in the communication instruction unit 1082 so as to acquire the Web site data of the link destination. Give the address data.

  As described above, since the website can be accessed when it is within the scope of the in-house network, the website is obtained by using the web data acquired from the website and the input data input from the character input function unit 40. Processing such as writing to can be performed.

  Even when the user is within the external network range where access is not restricted, the desired Web site can be accessed, and therefore, the same processing as that within the internal network range is possible.

(A-2-2) Case of Access within Restricted Outside Network Range FIG. 5 shows processing of website information using the notebook 1 when the notebook 1 is within the scope of the restricted outside network. It is a flowchart when performing.

  The network to which the notebook 1 belongs is always determined by the antenna function unit 11, and the determination result is given to the access control function unit 13.

  Then, when an access request to the website is given by the user operation, the access control unit function unit 13 determines that the notebook 1 is within the outside network range where the access is restricted based on the determination result from the antenna function unit 11. It is determined that there is (step S201).

  Then, an access restriction instruction for prohibiting Web access is given from the access control function unit 13 to the Web access function unit 12 (step S202), and access processing to the Web site is not performed.

  Further, the access control function unit 13 notifies the web display control function unit 21 that the web access is restricted (step S203). When notified of the access restriction, the web display control function unit 21 reads the web operation data from the web operation data storage function unit 22 (step S204).

  Then, the Web display control function unit 21 creates display data using the Web operation data (step S205), and the display data is given to the electronic paper display function unit 30 to display the display screen ( Step S206).

  When input processing is performed on the character input function unit 40 by the user operation, input data by the user operation is given to the character input function unit 40, and the operation instruction data and character data determined based on the input data Is provided to the Web input data storage function unit 23 and stored (step S208).

  In addition, when it is within the range of the external network, it is assumed that input data is held and various operations are not performed.

  Here, various methods can be applied to creation of display data and display screen display using Web operation data. For example, the following two methods can be applied.

  The first is a method of storing a program, such as Ajax, in which screen transitions are described, in the Web operation data storage function unit 22. In this case, by executing this program locally (notebook 1), display data for the website screen is created, and screen transition of the website display screen is also performed.

  The second is a method of storing a simple input form of a Web site in the Web operation data storage function unit 22. This method is a method that can be effectively applied to, for example, a program such as Ajax that does not describe screen transitions, or that restricts access to websites with restricted access. is there.

  FIG. 6 is an explanatory diagram illustrating a simple input form of a website that provides a schedule function, for example.

  In FIG. 6, SC1 is a normal Web site input form, and SC2 is a simple input form. Normally, when an input form such as SC1 is displayed and a place where a schedule is to be entered is clicked on the calendar screen, the schedule entry screen is displayed and the blanks (title, date, etc.) are entered.

  In the case of the simple input form, an input form such as SC2 is displayed, and inputs of the “title” of the schedule, “From” and “To” of the scheduled date of the schedule, “location”, and “description” of the schedule are accepted.

  At this time, it is necessary to set the intermediate form SC3 for mapping between the normal input form SC1 and the simple input form SC2 by using a tag as shown in SC3, for example.

  FIG. 7 is a diagram showing an example of a simple input form display screen. As shown in FIG. 7, a display example in which the entire calendar is displayed at the top of the window and the input form is displayed at the bottom can be applied.

(A-2-3) When shifting from an outside network with restricted access to an in-house network FIG. 8 shows the processing in the notebook 1 when the notebook 1 is moved from within the restricted outside network to the inside network. It is a flowchart to show.

  The network to which the notebook 1 belongs is always determined by the antenna function unit 11, and the determination result is given to the access control function unit 13.

  Then, the access control function unit 13 detects that the access has been shifted from the external network whose access is restricted to the internal network based on the determination result of the antenna function unit 11 (step S301).

  Then, the input data input when the access control function unit 13 is in the outside network is read from the Web input data storage function unit 23, and the input data is given to the Web access function unit 12 (step S302). .

  Then, the Web access function unit 12 performs an access process to the Web site, and the input data input when it is in the external network is transmitted to the Web site (step S303).

  Thereafter, the stored data stored in the Web input data storage function unit 23 is deleted (step S304).

  Here, various methods can be applied for erasing stored data. For example, (a) a method of erasing the input data immediately after transmission of the input data, and (b) transmission of the input data is confirmed. (E.g., after receiving a response signal from a website), and (c) after transmitting input data, confirming that the information has been reflected and then deleting the data. it can. The method (c) can be realized by, for example, a method of erasing the stored data when receiving confirmation instructions by a user operation while displaying the results one after another on the electronic paper system notebook 1.

  By doing as described above, input data input by the user is transmitted to the Web site when switching to the in-house network when it is within the range of the external network where access is restricted.

  When a plurality of input data is stored, all input data is transmitted in the order of input time. Also, if there is an instruction to input different input data in the same form, it is overwritten.

(A-2-4) Web Site Information Display Control Processing Next, the display control processing of the Web display control function unit 21 when displaying the Web site screen on the display portion of the electronic paper display function unit 30 will be described with reference to FIG. This will be described with reference to FIG.

  FIG. 9 is a flowchart showing Web site information display control processing. FIG. 10 is a diagram illustrating an example of a display screen that is display-controlled.

  In FIG. 9, when Web site data is given to the Web display control function unit 21 (Step S401), the Web display control function unit 21 determines whether or not the display control identification information is included in the Web site data (Step S401). Step S402).

  Here, as the identification information for erasing the display of the partial area, for example, a tag for partially erasing the website data can be applied. In addition, an identifier indicating the entire erasure, the partial area erasure, the display data erasure, or the like can be applied to the title, the header portion, or the like.

  In step S402, when it is detected that the identification information indicating that the display of the partial area is deleted in the Web site data, the Web display control function unit 21 deletes the display of the corresponding area. Display data for making the voltage in the region uniform is created (step S403).

  As shown in FIG. 10A, the electronic paper display function unit 30 displays a screen from which the display of the area is erased (step S404).

  In step S402, when it is detected that the website data includes identification information indicating that the entire area display is to be deleted, the Web display control function unit 21 deletes the entire screen display. Display data for making the voltage of the entire screen uniform is created (step S405).

  Then, as shown in FIG. 10B, the electronic paper display function unit 30 displays a screen from which the entire screen is erased (step S406).

  Further, in step S402, when it is detected that the website screen is displayed on the website data, and after the display, the identification information indicating that the display data of the website screen is deleted is included, the web display control is performed. The function unit 21 creates display data for the website screen, and the electronic paper display function unit 30 displays the website screen (step S407).

  Thereafter, as shown in FIG. 10C, the Web display control function unit 21 deletes the display data for the displayed Web site screen (step S408). As a result, the displayed Web site screen is held in the electronic paper, but the display data is deleted, so that security is maintained.

(A-3) Effects of First Embodiment As described above, according to the first embodiment, the following effects can be expected.

(1) According to the first embodiment, it is possible to simultaneously control access to a website corresponding to a connected network and display control of website information, including the case where information has already been displayed. .

(2) According to the first embodiment, it is possible to provide access and display control by a simple method, specializing in access to a website and display of website information. Data can be input while isolated from the network that can be accessed.

(3) According to the first embodiment, by performing display control, it is possible to perform only display without saving as Web site data, and the degree of freedom for setting security according to the status of the information terminal. Can be set high.

(B) Other Embodiments (B-1) In the first embodiment, the case where the access control function unit separates the in-house network from the outside network is illustrated for convenience of explanation. It is not limited to some.

(B-2) In the first embodiment, for convenience of explanation, the case where one electronic paper is connected to the holder unit has been described. However, a plurality of electronic papers are connected to the holder unit. Also, the various processes described above can be performed.

  When multiple electronic papers are connected to the holder part, the holder part uses the sheet identification information assigned to each sheet part to manage which sheet part is connected to which holder part connector. Part.

  For example, consider a case where the holder unit includes a communication function unit that collectively performs communication processing of all the sheet units. In this case, referring to the connection management information of the sheet part of the connection management function part, the communication function part 10 can perform access control associated with the sheet identification information of each sheet part.

  Note that the communication function unit described in the first embodiment may be included in each sheet unit. In this case, the communication function unit of each sheet unit does not include the above connection management unit. Communication processing can be performed individually.

1 is an external perspective view of an electronic paper system notebook according to a first embodiment. It is an internal block diagram which shows the internal structure of the electronic paper system notebook of 1st Embodiment. It is an internal block diagram of the electronic paper display function part of 1st Embodiment. It is a flowchart which shows the process with respect to Web site information within the company network range of 1st Embodiment. It is a flowchart which shows the process with respect to Web site information within the external network range of 1st Embodiment. It is explanatory drawing explaining the simple input form of the Web site of 1st Embodiment. It is a figure which shows the example of a display screen of the simple input form of 1st Embodiment. It is a flowchart which shows the process at the time of transfer to the internal network from the external network where access was restricted of 1st Embodiment. It is a flowchart which shows the display control process of the website information of 1st Embodiment. It is a figure which shows the example of the display screen by which the display control of 1st Embodiment was carried out.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Electronic paper system notebook, 2 ... Holder part, 3 ... Electronic paper display part (sheet | seat part), 10 ... Communication function part, 11 ... Antenna function part, 12 ... Web access function part, 13 ... Access control function part, 20 ... Electronic paper control display function part, 21 ... Web display control function part, 22 ... Web operation data storage function part, 23 ... Web input data storage function part, 30 ... Electronic paper display function part, 40 ... Character input function part.

Claims (9)

An information terminal comprising one or a plurality of detachable information display sheet devices each having display control means for a display unit, and holder means to which each of the information display sheet devices can be attached,
Input means for capturing input data by user operation;
A communication means for performing network communication processing and determining the type of the connected network;
Access control means for controlling access to a predetermined access destination using each information display sheet device based on the network type;
Using the site information of the access destination corresponding to each information display sheet device and the input data from the input means, display control to the display unit of the corresponding information display sheet device is performed, An information terminal comprising: display control means for performing different display control depending on a network type of the network to be operated.   When the access control means connects to the first network, it performs access processing to the access destination of each information display sheet device, and when it connects to the second network, it accesses to the access destination of each information display sheet device. An information terminal characterized by not performing processing. The display control means is
An operation information holding unit for holding operation information of the site information of the access destination;
When connecting to the second network, a display execution unit that displays site information based on the operation information read from the operation information holding unit;
The information terminal according to claim 1, further comprising: an input data holding unit that holds one or a plurality of input data input from the input unit. When switching from the second network to the first network,
The access control means performs access processing to the access destination of each information display sheet device,
The said display control means is what makes each said input data currently hold | maintained at the said input data holding means transmit with respect to the access destination of each said information display sheet apparatus. Information terminal.   When the display control unit is connected to the first network, the site information acquired from the access destination of each information display sheet device is displayed through the communication unit, and the site information using the input data is processed. The information terminal according to claim 1, wherein the information terminal is a thing. The site information includes display control identification information indicating display control of the site display screen,
6. The information terminal according to claim 1, wherein the display control means performs display control according to the content of the display control identification information.   The information terminal according to claim 6, wherein the display control unit instructs display erasure of a partial area of the display screen of the site information.   The information terminal according to claim 6, wherein the display control unit instructs to erase the entire display screen of the site information.   7. The information terminal according to claim 6, wherein the display control means deletes the data of the site information after displaying the display screen of the site information.

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