JP2009020301A - Web page browsing program, web page display method, terminal device and network system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To determine whether WEB page data downloaded is confidential, and automatically narrow the view angle of a liquid crystal screen when displaying a WEB page determined to be confidential on the liquid crystal screen. <P>SOLUTION: The WEB page browsing program makes a computer execute steps of: downloading WEB page data (S10); determining whether the WEB page data is confidential; issuing, when the data is determined to be confidential, a view angle narrowing instruction for indicating narrowing of the view angle of the liquid crystal screen for displaying WEB pages (S12); and issuing a WEB page data display instruction for indicating display of the WEB page data on the liquid crystal screen. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a WEB page browsing program, a WEB page display method, a terminal device, and a network system.

  Using the Internet connection function of a mobile communication terminal such as a mobile phone, a user can browse a WEB page regardless of location. The Internet connection function has been strengthened, and there has been an increased chance that information related to individual users such as authentication IDs, passwords, WEB mails, personalized pages, and the like are displayed on the liquid crystal screen of the mobile communication terminal device. While the mobile communication terminal device is convenient to use regardless of location, there is a problem that when a user browses a WEB page while the user is out, the surrounding people can see personal information.

  In order to solve this problem, a filter that narrows the viewing angle of the liquid crystal screen has been released. By sticking this filter on the liquid crystal screen, the problem that the personal information displayed on the liquid crystal screen can be seen by surrounding people has been solved to some extent. However, the application of the filter causes a problem that the viewing angle is always narrowed even when the user views the liquid crystal screen.

  Japanese Patent Application Laid-Open No. 2001-344050 (refer to Patent Document 1) describes an invention of an information processing apparatus including a display unit capable of controlling the width of a viewing angle. The information processing apparatus includes control means for controlling the display section to narrow the viewing angle during the input of data for authenticating the user. Patent Document 1 is specialized in an ID / password input screen. It is considered impossible to deal with various existing authentication methods such as matrix authentication. The content is specialized for notebook computers.

  Japanese Unexamined Patent Application Publication No. 2004-62094 (see Patent Document 2) describes an invention of a portable terminal device. In this portable terminal device, the information display means displays information. The viewing angle changing means is disposed on the display surface of the information display means. The viewing angle control means changes the viewing angle of the information display means that is visible through the viewing angle changing means by controlling the viewing angle of the viewing angle changing means. In Patent Document 2, viewing angle control is performed manually or for each type of application.

  Japanese Patent Laying-Open No. 2006-319554 (see Patent Document 3) describes an invention of a portable information terminal device. In this portable information terminal device, the display restriction information storage means stores display restriction information indicating whether or not the screen data is secret data associated with user data. The display mode designation information storage means stores rewritable display mode designation information for designating either the first display mode in which the secret data is not displayed or the second display mode in which the secret data is displayed according to the display restriction information. . The application execution means selects user data to be displayed based on the display mode designation information and displays the user data on the screen. The viewing angle control means narrows the viewing angle of the display screen based on the display mode designation information.

  Patent Document 3 adds a function to a program corresponding to a file system of basic software. Display restriction information is stored in the portable information terminal device in association with user data stored in the terminal based on an operation input by the user. Based on this display restriction information, all user data is classified into secret data and non-secret data. Note that paragraph 0065 of Patent Document 3 suggests that data corresponding to display restriction information is embedded in the data file, but corresponds to display restriction information for all contents provided by the web server. It would be impractical to embed data to do.

JP 2001-344050 A JP 2004-62094 A JP 2006-319554 A

  An object of the present invention is to determine whether or not the downloaded WEB page data is confidential. Another object of the present invention is to automatically narrow the viewing angle of a liquid crystal screen when a WEB page determined to be confidential is displayed on the liquid crystal screen.

  A WEB page browsing program according to an aspect of the present invention causes a computer to execute a downloading step, a determining step, a step of issuing a viewing angle narrowing command, and a step of issuing a WEB page data display command. . The downloading step downloads WEB page data. The determining step determines whether or not the WEB page data has confidentiality. The step of issuing the viewing angle narrowing command issues a viewing angle narrowing command for instructing to narrow the viewing angle of the liquid crystal screen displaying the WEB page when it is determined that the viewing angle is concealed. The step of issuing a WEB page data display command issues a WEB page data display command for instructing to display the WEB page data on the liquid crystal screen.

  The WEB page display method according to another aspect of the present invention displays a WEB page by performing the following operations by executing a WEB page browsing program. Download WEB page data. It is determined whether the WEB page data has confidentiality. When it is determined that the information has the confidentiality, a view angle narrowing instruction is issued to instruct to narrow the view angle of the liquid crystal screen displaying the WEB page. A WEB page data display command is issued for instructing to display the WEB page data on the liquid crystal screen.

  In the terminal device according to another aspect of the present invention, the operation unit accepts an operation by the user. The transmission / reception unit downloads the WEB page data designated by the operation. The data processing unit processes the WEB page data. The liquid crystal display unit displays a WEB page. The viewing angle control unit controls the viewing angle of the liquid crystal display unit. The data processing unit includes a determination unit and a viewing angle narrowing command issuing unit. The determination unit determines whether or not the WEB page data has confidentiality. The viewing angle narrowing command issuing unit instructs the viewing angle control unit to narrow the viewing angle when the determining unit determines that the WEB page data has confidentiality. Issue a narrowing directive.

  A network system according to another aspect of the present invention includes a WEB server that distributes WEB page data, and a WEB client that downloads the WEB page data. The WEB server distributes WEB page data in which a confidentiality tag is embedded. The WEB client includes an operation unit, a transmission / reception unit, a data processing unit, a liquid crystal display unit, and a viewing angle control unit. The operation unit accepts an operation by the user. The transmission / reception unit downloads the WEB page data designated by the operation. The data processing unit processes the WEB page data. The liquid crystal display unit displays a WEB page. The viewing angle control unit controls the viewing angle of the liquid crystal display unit. The data processing unit includes a determination unit and a viewing angle narrowing command issuing unit. The determination unit determines whether or not the WEB page data has confidentiality. The viewing angle narrowing command issuing unit instructs the viewing angle control unit to narrow the viewing angle when the determining unit determines that the WEB page data has confidentiality. Issue a narrowing directive. The determination unit includes a tag search unit that searches for a confidential tag embedded in the WEB page data.

  According to the present invention, it is possible to determine whether or not the downloaded WEB page data is confidential. In addition, when a WEB page that is determined to be confidential is displayed on the liquid crystal screen, the viewing angle of the liquid crystal screen can be automatically narrowed.

[Embodiment 1] FIG. 1 shows an embodiment of a WEB page display method according to the present invention. In the display method in FIG. 1, the following operation is performed by executing the WEB page browsing program to display the WEB page. First, WEB page data is downloaded (S10). Next, it is determined whether or not the downloaded WEB page data has confidentiality (S11). If it is determined that the web page data is displayed, a viewing angle narrowing command is issued to instruct to narrow the viewing angle of the liquid crystal screen that displays the WEB page when the WEB page data is displayed ( S12). Further, a WEB page data display command is issued for instructing to display the WEB page data on the liquid crystal screen (S13).

[Embodiment 2] FIG. 2 shows an embodiment of a terminal apparatus according to the present invention. The terminal device 10 in FIG. 2 includes a liquid crystal display unit 11, a viewing angle control unit 12, an operation unit 13, a data processing unit 14, and a transmission / reception unit 15. The liquid crystal display unit 11 displays a WEB page. The viewing angle control unit 12 controls the viewing angle of the liquid crystal display unit 11. The operation unit 13 receives an operation by a user. The transmission / reception unit 15 downloads WEB page data designated by an operation by the user. The data processing unit 14 processes WEB page data. The data processing unit 14 in FIG. 2 includes a determination unit 16 and a viewing angle narrowing command issuing unit 17. The determination unit 16 determines whether the WEB page data has confidentiality. The viewing angle narrowing command issuing unit 17 instructs the viewing angle control unit 12 to narrow the viewing angle when the determining unit 16 determines that the WEB page data is confidential. Issue a directive.

  The determination unit 16 may include a tag search unit that searches for confidentiality tags embedded in WEB page data. Furthermore, when the confidentiality tag is searched, the determining unit 16 refers to a reference unit that refers to the confidentiality attribute of the confidentiality tag, and a confirmation unit that confirms whether the value of the confidentiality attribute is true. It can have. In addition, the terminal device 10 may further include a keyword storage unit that stores a confidentiality keyword. At this time, if the determination unit 16 cannot retrieve the confidentiality tag, the confidentiality keyword is stored. It is possible to use a keyword search unit for searching WEB page data. In addition, the terminal device 10 may further include a conditional expression storage unit that stores a confidentiality search conditional expression. At this time, if the determination unit 16 cannot search for the confidentiality tag, the terminal apparatus 10 It is possible to have a conditional expression search unit for searching WEB page data using a sex search conditional expression. In addition, the terminal device 10 may further include a keyword storage unit that stores a confidentiality keyword. At this time, the determination unit 16 uses the confidentiality keyword to search for WEB page data. It can have a search part. Further, the terminal device 10 may further include a conditional expression storage unit for storing a confidentiality search conditional expression. At this time, the determination unit 16 uses the confidentiality search conditional expression to It may have a conditional expression search unit for searching data.

[Embodiment 3] FIG. 3 shows an embodiment of a network system according to the present invention. The network system in FIG. 3 includes a WEB server 20 and a WEB client 30. The WEB server 20 distributes WEB page data 21. The WEB client 30 downloads the WEB page data 21. The WEB server 20 in FIG. 3 distributes WEB page data 21 in which the confidentiality tag 22 is embedded. 3 includes an operation unit 31, a transmission / reception unit 32, a data processing unit 33, a liquid crystal display unit 34, and a viewing angle control unit 35. The operation unit 31 receives an operation by a user. The transmission / reception unit 32 downloads the WEB page data 21 designated by the operation by the user. The data processing unit 33 processes the WEB page data 21. The liquid crystal display unit 34 displays a WEB page. The viewing angle control unit 35 controls the viewing angle of the liquid crystal display unit 34. The data processing unit 33 in FIG. 3 includes a determination unit 36 and a viewing angle narrowing command issuing unit 37. The determination unit 36 determines whether the WEB page data 21 has confidentiality. The viewing angle narrowing command issuing unit 37 instructs the viewing angle control unit 35 to narrow the viewing angle when the determining unit 36 determines that the WEB page data 21 is confidential. Issue a narrowing directive. The determination unit 36 in FIG. 3 includes a tag search unit that searches for the confidentiality tag 22 embedded in the WEB page data 21.

  The WEB server 20 can deliver WEB page data in which a confidentiality tag having a confidentiality attribute is embedded. At this time, when the confidentiality tag is searched, the determination unit 36 determines the confidentiality. A reference unit that refers to the attribute and a confirmation unit that confirms the value of the confidentiality attribute may be included.

  Next, various embodiments relating to the mobile phone will be described in detail. A cellular phone described below has a function of automatically adjusting a viewing angle of a liquid crystal screen and a function of browsing a WEB page. The function of automatically adjusting the viewing angle of the liquid crystal screen can be realized by a known technique as described in Patent Document 3 above. The function of browsing a WEB page can be realized by mounting a known WEB page browsing program on a mobile phone. A computer is incorporated in the following mobile phone, and a WEB page browsing program is installed. In this WEB page browsing program, in addition to various steps for realizing a known browsing function, it is determined whether or not the WEB page data has confidentiality, and is determined to have confidentiality. In this case, a step of issuing a viewing angle narrowing command for instructing to narrow the viewing angle of the liquid crystal screen displaying the WEB page is added.

[Embodiment 4] The WEB page browsing program installed in the mobile phone executes a step of storing the confidentiality keyword in the keyword storage unit of the mobile phone before downloading the WEB page data. Here, it is assumed that the confidentiality keyword “password” given by default when the WEB page browsing program is installed is stored. The confidentiality keyword can be added or deleted by the user operating the mobile phone. Here, it is assumed that the confidentiality keyword “password” is added later by the user's operation input.

  FIG. 4 is a diagram showing an example of WEB page data. As described in <! DOCTYPE html…> on the first line, this WEB page data is an html (Hyper Text Markup Language) file. In the BODY section, enter "User ID and password. Please include. " Here, it is assumed that the WEB page data as shown in FIG. 4 is downloaded from the WEB server by the user operating the mobile phone and specifying a URL (Uniform Resource Locator). At this time, the WEB page browsing program of the mobile phone executes a step of determining whether or not the WEB page data in FIG. 4 has confidentiality. The WEB page browsing program searches the WEB page data of FIG. 4 with reference to the confidentiality keyword stored in the keyword storage unit. As a result, the character string “password” that matches the confidentiality keyword is detected from the WEB page data of FIG. The WEB page browsing program determines that the WEB page data in FIG. 4 has confidentiality. The WEB page browsing program that is determined to have confidentiality executes a step of issuing a viewing angle narrowing instruction that instructs to narrow the viewing angle of the liquid crystal screen of the mobile phone. Further, the WEB page browsing program executes a step of issuing a WEB page data display command for instructing to display WEB page data on the liquid crystal screen. In response to these commands, the function of automatically adjusting the viewing angle of the liquid crystal screen works while the web page data determined to be confidential is displayed on the liquid crystal screen. The viewing angle of the LCD screen is narrowed. As a result, the html file including the confidentiality keyword of FIG. 4 is displayed in a predetermined format with a narrow viewing angle.

[Embodiment 5] A WEB page browsing program installed in a mobile phone executes a step of storing a confidentiality search conditional expression in a conditional expression storage unit of the mobile phone in advance before downloading WEB page data. Here, it is assumed that the confidentiality search condition expression “password & user” given by default is stored when the WEB page browsing program is installed. This search conditional expression is a conditional expression including the keyword “password” and including the keyword “user”. The confidentiality search conditional expression can be automatically added or deleted. Here, the WEB page browsing program accesses a predetermined WEB server that manages the search condition formula, downloads the confidentiality search condition formula update program from there, and executes the program, thereby “password & user”. Assume that a confidentiality search conditional expression is added.

  Suppose that the user downloads WEB page data as shown in FIG. 4 from the WEB server by operating the mobile phone and specifying the URL. At this time, the WEB page browsing program of the mobile phone executes a step of determining whether or not the WEB page data in FIG. 4 has confidentiality. The WEB page browsing program searches the WEB page data of FIG. 4 with reference to the confidentiality search condition formula stored in the search condition formula storage unit. As a result, a character string “Please input user ID and password” that satisfies the confidentiality conditional expression is detected from the WEB page data of FIG. The WEB page browsing program determines that the WEB page data in FIG. 4 has confidentiality. The WEB page browsing program that has been determined to have confidentiality executes a step of issuing a viewing angle narrowing instruction that instructs to narrow the viewing angle of the liquid crystal screen of the mobile phone. Further, the WEB page browsing program executes a step of issuing a WEB page data display command for instructing to display WEB page data on the liquid crystal screen. In response to these commands, the function of automatically adjusting the viewing angle of the liquid crystal screen works while the web page data determined to be confidential is displayed on the liquid crystal screen. The viewing angle of the LCD screen is narrowed. Thereby, an html file that satisfies the confidentiality conditional expression of FIG. 4 is displayed in a predetermined format with a narrow viewing angle.

  A keyword search using a confidentiality keyword and a keyword search using a confidentiality search conditional expression can be used in combination.

[Embodiment 6] The confidentiality tag 40 can be embedded in the html file distributed by the WEB server. FIG. 5 is a diagram showing another example of WEB page data. In the example of FIG. 5, the confidentiality tag 40 is embedded in the html file of FIG. The confidentiality tag 40 in FIG. 5 is surrounded by “<>” and includes a character string “confidential”. In this embodiment, the WEB page data shown in FIG. 5 is uploaded to the WEB server and downloaded from the WEB server in response to a request from the mobile phone.

  In the WEB page browsing program installed in the mobile phone, a step of searching whether or not the confidentiality tag 40 exists in the downloaded WEB page data is added. By this step, when the confidentiality tag 40 is searched, the WEB page browsing program can determine that the downloaded WEB page data has confidentiality. On the other hand, when the confidentiality tag 40 is not searched, the WEB page browsing program can determine that the downloaded WEB page data has no confidentiality.

  Suppose that the user downloads WEB page data as shown in FIG. 5 from the WEB server by operating the mobile phone and specifying the URL. At this time, the WEB page browsing program of the mobile phone executes a step of determining whether or not the WEB page data in FIG. 5 has confidentiality. In this determination, the WEB page browsing program searches for a character string “confidential” surrounded by “<>”. Then, the confidentiality tag 40 is searched. Since the confidentiality tag 40 is searched, the WEB page browsing program determines that the WEB page data in FIG. 5 has confidentiality. Since it is determined to have confidentiality, the WEB page browsing program executes a step of issuing a viewing angle narrowing instruction instructing to narrow the viewing angle of the liquid crystal screen of the mobile phone. Further, the WEB page browsing program executes a step of issuing a WEB page data display command for instructing to display WEB page data on the liquid crystal screen. In response to these commands, the function of automatically adjusting the viewing angle of the liquid crystal screen works while the web page data determined to be confidential is displayed on the liquid crystal screen. The viewing angle of the LCD screen is narrowed. As a result, the html file including the <confidential> tag in FIG. 5 is displayed in a predetermined format with a narrow viewing angle.

  On the other hand, it is assumed that the WEB page data as shown in FIG. 4 is downloaded from the WEB server by the user operating the mobile phone and specifying the URL. At this time, the WEB page browsing program of the mobile phone executes a step of determining whether or not the WEB page data in FIG. 4 has confidentiality. In this determination, the WEB page browsing program searches for a character string “confidential” surrounded by “<>”. The WEB page data in FIG. 4 does not include a confidentiality tag. Since the WEB page browsing program cannot search for the confidentiality tag, the WEB page data in FIG. 4 does not determine that the confidentiality tag is confidential. Since it was not determined to have confidentiality, the WEB page browsing program does not execute the step of issuing a viewing angle narrowing instruction instructing to narrow the viewing angle of the liquid crystal screen of the mobile phone. Alternatively, a step of issuing a viewing angle enlargement command for instructing to widen the viewing angle of the liquid crystal screen of the mobile phone is executed. Further, the WEB page browsing program executes a step of issuing a WEB page data display command for instructing to display WEB page data on the liquid crystal screen. In response to these commands, the function of automatically adjusting the viewing angle of the liquid crystal screen works while the web page data determined to have no confidentiality is displayed on the liquid crystal screen. The viewing angle of the LCD screen becomes wider. Thereby, the viewing angle of the liquid crystal screen of the mobile phone is not narrowed, and the html file not including the <confidential> tag of FIG. 4 is displayed in a predetermined format with the viewing angle wide.

  In addition, when the confidentiality tag cannot be searched, a search using the keyword of the fourth embodiment, a search using the search condition expression of the fifth embodiment, or a search using both of them is further performed. The presence or absence may be determined.

[Embodiment 7] The confidentiality tag can have a confidentiality attribute. FIG. 6 is a diagram showing another example of WEB page data. In the example of FIG. 6, a confidentiality tag 41 having a confidentiality attribute is embedded instead of the confidentiality tag 40 of FIG. The confidentiality tag 41 in FIG. 6 is surrounded by “<>” and includes a character string “confidentiality” representing the confidentiality attribute. In this embodiment, the WEB page data of FIG. 6 is uploaded to the WEB server and downloaded from the WEB server in response to a request from the mobile phone.

  The WEB page browsing program installed in the mobile phone includes a step of searching whether or not a confidential tag exists in the downloaded WEB page data, and a confidentiality attribute when the confidential tag is searched. A step of referring to and a step of confirming whether or not the value of the confidentiality attribute is true are added. When these steps confirm that the value of the confidentiality attribute is true, the WEB page browsing program can determine that the downloaded WEB page data has confidentiality. On the other hand, when the confidentiality tag is not searched or when it is confirmed that the value of the confidentiality attribute is not true, the WEB page browsing program can determine that the downloaded WEB page data is not confidential. .

  Suppose that the user downloaded the WEB page data as shown in FIG. 6 from the WEB server by operating the mobile phone and specifying the URL. At this time, the WEB page browsing program of the mobile phone executes a step of determining whether or not the WEB page data in FIG. 6 has confidentiality. In this determination, the WEB page browsing program searches for a tag enclosed in “<>” that includes a character string “confidentiality”. Here, the confidentiality tag 41 is hit. Since the confidentiality tag 41 is searched, the WEB page browsing program refers to the value of “confidentiality” that is the confidentiality attribute and acquires “true”. Since the true value “true” is acquired, it is determined that the WEB page data in FIG. 6 has confidentiality. Since it is determined to have confidentiality, the WEB page browsing program executes a step of issuing a viewing angle narrowing instruction instructing to narrow the viewing angle of the liquid crystal screen of the mobile phone. Further, the WEB page browsing program executes a step of issuing a WEB page data display command for instructing to display WEB page data on the liquid crystal screen. In response to these commands, the function of automatically adjusting the viewing angle of the liquid crystal screen works while the web page data for which the confidentiality attribute is determined to be true is displayed on the liquid crystal screen. The viewing angle of the LCD screen is narrowed. Thereby, the html file including confidentiality = true in FIG. 6 is displayed in a predetermined format with a narrow viewing angle. At this time, when it is determined that the information has confidentiality, a description that the viewing angle of the liquid crystal screen is narrowed may be added to the WEB page data, and a WEB page data display command may be issued.

  On the other hand, when the value of the confidentiality attribute in the confidentiality tag 41 in FIG. 6 is set to false, the character string “confidentiality = false” can be described in the confidentiality tag. It is assumed that the mobile phone has downloaded WEB page data in which a confidentiality tag having such a confidentiality attribute value as false is embedded. At this time, the WEB page browsing program searches for the confidentiality tag, refers to the value of “confidentiality” that is the confidentiality attribute, and acquires “false”. Since the false value “false” is acquired, it is determined that the WEB page data does not have confidentiality. Since it is determined that the web page browsing program does not have confidentiality, the WEB page browsing program does not execute the step of issuing a viewing angle narrowing instruction that instructs to narrow the viewing angle of the liquid crystal screen of the mobile phone. Alternatively, a step of issuing a viewing angle enlargement command for instructing to widen the viewing angle of the liquid crystal screen of the mobile phone is executed. Further, the WEB page browsing program executes a step of issuing a WEB page data display command for instructing to display WEB page data on the liquid crystal screen. In response to these commands, the function of automatically adjusting the viewing angle of the liquid crystal screen works while the web page data determined to have no confidentiality is displayed on the liquid crystal screen. The viewing angle of the LCD screen becomes wider. As a result, the viewing angle of the liquid crystal screen of the mobile phone is not narrowed, and an html file including confidentiality = false is displayed in a predetermined format with a wide viewing angle. At this time, when it is determined that the information is not confidential, a description that the viewing angle of the liquid crystal screen is not narrowed may be added to the WEB page data, and a WEB page data display command may be issued.

[Eighth Embodiment] A large number of WEB servers are installed on the Internet, and various WEB page data are uploaded to each WEB server. Here, the confidentiality tag as shown in FIG. 6 is embedded in some WEB page data, and the confidentiality tag as shown in FIG. 6 is embedded in the other WEB page data. An embodiment in the case of not being present will be described.

  As described in the fourth embodiment, the confidentiality keyword is stored in advance in the keyword storage unit of the mobile phone. Further, as described in the fifth embodiment, the confidentiality search conditional expression is stored in the conditional expression storage unit of the mobile phone in advance. Furthermore, an html file in which the confidentiality tag is embedded as described in the seventh embodiment is created, and the html file in which the confidentiality tag is embedded is added to the WEB server storing the existing html file in which the confidentiality tag is not embedded. And upload. This confidentiality tag has a confidentiality attribute, and a true or false value is given to the confidentiality attribute. The mobile phone can access the WEB server and download an existing html file in which the confidential tag is not embedded, and can download new WEB page data in which the confidential tag is embedded.

  FIG. 7 is a flowchart for explaining a WEB page data display method in which the fourth embodiment and the fifth embodiment are combined with the seventh embodiment. In FIG. 7, when the user operates the mobile phone and designates a URL, WEB page data is downloaded from the WEB server (S20). At this time, the WEB page browsing program of the mobile phone executes a step of determining whether or not the WEB page data has confidentiality. In this determination, the WEB page browsing program searches for a tag enclosed in “<>” that includes the character string “confidentiality” (S21). When the confidentiality tag is searched (S22: Yes), the WEB page browsing program refers to the value of “confidentiality” that is the confidentiality attribute.

  When the true value is acquired (S23: true), the WEB page browsing program executes a step of issuing a viewing angle narrowing command for instructing to narrow the viewing angle of the liquid crystal screen of the mobile phone. In response to this command, the mobile phone narrows the viewing angle of the liquid crystal screen (S24). Further, the WEB page browsing program executes a step of issuing a WEB page data display command for instructing to display WEB page data on the liquid crystal screen. Thereby, the WEB page data is displayed on the liquid crystal screen with a narrow viewing angle. On the other hand, when a false value is acquired (S23: false), the WEB page browsing program does not execute a step of issuing a viewing angle narrowing instruction instructing to narrow the viewing angle of the liquid crystal screen of the mobile phone. Alternatively, a step of issuing a viewing angle enlargement command for instructing to widen the viewing angle of the liquid crystal screen of the mobile phone is executed. The mobile phone widens the viewing angle of the liquid crystal screen (S25). Further, the WEB page browsing program executes a step of issuing a WEB page data display command for instructing to display WEB page data on the liquid crystal screen. Thereby, the WEB page data is displayed on the liquid crystal screen with a wide viewing angle.

  On the other hand, when the confidentiality tag is not searched (S22: No), the WEB page browsing program executes a keyword search (S26). The keyword search can be executed using a keyword as described in the fourth embodiment, and can be executed using a search condition formula as described in the fifth embodiment. Or you may use both together. When this keyword search is hit (S27: Yes), the WEB page browsing program executes a step of issuing a viewing angle narrowing command for instructing to narrow the viewing angle of the liquid crystal screen of the mobile phone. In response to this command, the mobile phone narrows the viewing angle of the liquid crystal screen (S28). Further, the WEB page browsing program executes a step of issuing a WEB page data display command for instructing to display WEB page data on the liquid crystal screen. Thereby, the WEB page data is displayed on the liquid crystal screen with a narrow viewing angle. On the other hand, when the keyword search is not hit (S27: No), the WEB page browsing program does not execute the step of issuing a viewing angle narrowing command for instructing to narrow the viewing angle of the liquid crystal screen of the mobile phone. Alternatively, a step of issuing a viewing angle enlargement command for instructing to widen the viewing angle of the liquid crystal screen of the mobile phone is executed. The mobile phone widens the viewing angle of the liquid crystal screen (S29). Further, the WEB page browsing program executes a step of issuing a WEB page data display command for instructing to display WEB page data on the liquid crystal screen. Thereby, the WEB page data is displayed on the liquid crystal screen with a wide viewing angle.

  If the presence / absence of the confidentiality tag is determined based on the presence / absence of the confidentiality tag as shown in FIG. 5, inconvenience occurs when the confidentiality tag is not searched in the WEB page data. In other words, if the confidentiality tag is not searched, the WEB page browsing program does not have the confidentiality of the WEB page data created without considering confidentiality or the confidentiality of the WEB page data. It will be difficult to judge. For example, if the confidentiality tag is not searched in the WEB page data next to the Web page data for which the confidentiality tag is searched, whether the viewing angle is continuously narrowed or the viewing angle is widened It becomes unclear. As shown in FIG. 6, if the confidentiality attribute is given a value of “false” to indicate that there is no confidentiality, such a problem does not occur and the viewing angle can be widened. In addition, a confidentiality attribute can be added to each of a plurality of WEB page data in one html file, and the viewing angle of the liquid crystal screen is narrowed only during the display of the WEB page data having the true confidentiality attribute. be able to. In this case, when the WEB page data with the confidentiality attribute being true and the WEB page data with the confidentiality attribute being false are simultaneously displayed on the liquid crystal screen, the confidentiality attribute has priority over the truth.

  It is preferable that the viewing angle is adjusted during the entire period when the WEB page data is displayed on the liquid crystal screen. However, after the WEB page data display command is issued, the viewing angle narrowing command or the viewing angle expansion is performed. The viewing angle may be adjusted after the command is issued and the WEB page data is displayed on the liquid crystal screen. Of course, before the WEB page data display command is issued, the viewing angle narrowing command or the viewing angle widening command is issued and the viewing angle is adjusted, and then the WEB page data is displayed on the liquid crystal screen. Good.

  As described above, various embodiments have been described by taking a mobile phone as an example of a terminal device serving as a WEB client. These embodiments can be applied to a notebook personal computer, an electronic notebook, and a PDA (Personal Digital Assistant) in addition to a cellular phone. It can also be applied to desktop computers arranged in open spaces such as Internet cafes.

[Effect of Embodiment] According to the above embodiment, personal information included in a user ID input screen, a password input screen, a WEB mail screen, a personalized screen, etc. displayed during browsing using the browser function of the mobile phone is stored. Can be protected. When these screens are displayed, the mobile phone can automatically identify confidential tags and confidential keywords embedded in the html file, and can automatically change the viewing angle of the liquid crystal screen. Therefore, it is not necessary for the user to attach a filter to the liquid crystal screen and manually adjust the viewing angle as in the conventional case, and the viewing angle of the liquid crystal screen can be changed very easily.

FIG. 1 is a diagram showing an embodiment of a WEB page display method according to the present invention. FIG. 2 is a diagram illustrating an embodiment of a terminal device according to the present invention. FIG. 3 is a diagram showing an embodiment of a network system according to the present invention. FIG. 4 is a diagram showing an example of WEB page data. FIG. 5 is a diagram showing another example of WEB page data. FIG. 6 is a diagram showing another example of WEB page data. FIG. 7 is a flowchart for explaining a method of displaying WEB page data.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Terminal device 11, 34 Liquid crystal display part 12, 35 View angle control part 13, 31 Operation part 14, 33 Data processing part 15, 32 Transmission / reception part 16, 36 Judgment part 17, 37 View angle narrowing command issuing part 20 WEB server 21 WEB page data 22, 40, 41 Confidentiality tag 30 WEB client 38 Tag search unit

Claims (23)

Downloading WEB page data;
Determining whether the WEB page data is confidential;
Issuing a viewing angle narrowing instruction for instructing to narrow a viewing angle of a liquid crystal screen for displaying a WEB page when it is determined that the confidentiality is provided;
A WEB page browsing program for causing a computer to execute a WEB page data display command for instructing to display the WEB page data on the liquid crystal screen. The step of determining whether or not to have the confidentiality includes
Retrieving a confidentiality tag embedded in the WEB page data;
The WEB page browsing program according to claim 1, further comprising: determining whether or not there is confidentiality based on a search result of the confidentiality tag. The step of determining whether or not to have the confidentiality includes
A step of referring to a confidentiality attribute of the confidentiality tag when the confidentiality tag is searched;
Checking whether the value of the confidentiality attribute is true;
The WEB page browsing program according to claim 2, further comprising: determining whether or not there is confidentiality based on the value. Prior to the step of downloading, further comprising storing a confidentiality keyword;
The step of determining whether or not to have the confidentiality includes
Searching for the WEB page data using the confidentiality keyword when the confidentiality tag could not be searched;
The WEB page browsing program according to claim 2, further comprising: determining whether or not there is confidentiality based on a search result using the confidentiality keyword. Prior to the downloading step, the method further comprises a step of storing a confidentiality search condition formula,
The step of determining whether or not to have the confidentiality includes
Searching the WEB page data using the confidentiality search conditional expression when the confidentiality tag could not be searched;
The WEB page browsing program according to any one of claims 2 to 4, further comprising: determining whether or not there is confidentiality based on a search result using the confidentiality search conditional expression. Prior to the step of downloading, further comprising storing a confidentiality keyword;
The step of determining whether or not to have the confidentiality includes
Searching the WEB page data using the confidentiality keyword;
The WEB page browsing program according to any one of claims 1 to 3, further comprising: determining whether or not there is confidentiality based on a search result using the confidentiality keyword. Prior to the downloading step, the method further comprises a step of storing a confidentiality search condition formula,
The step of determining whether or not to have the confidentiality includes
Searching the WEB page data using the confidentiality search conditional expression;
The WEB page browsing program according to claim 1, further comprising a step of determining the presence or absence of confidentiality based on a search result using the confidentiality search conditional expression. Download the web page data
Determining whether the WEB page data is confidential;
When it is determined that the confidentiality is determined, a viewing angle narrowing instruction is issued to instruct to narrow the viewing angle of the liquid crystal screen that displays the WEB page.
A WEB page display method for displaying a WEB page by executing a WEB page browsing program to issue a WEB page data display command for instructing to display the WEB page data on the liquid crystal screen. When determining whether to have the confidentiality,
Search for confidentiality tags embedded in the WEB page data;
The WEB page display method according to claim 8, wherein presence / absence of confidentiality is determined based on a search result of the confidentiality tag. When determining whether to have the confidentiality,
When the confidentiality tag is searched, referring to the confidentiality attribute of the confidentiality tag,
Check whether the value of the confidentiality attribute is true,
The WEB page display method according to claim 9, wherein presence / absence of confidentiality is determined based on the value. Prior to downloading, storing confidentiality keywords;
When determining whether to have the confidentiality,
When the confidentiality tag cannot be searched, the WEB page data is searched using the confidentiality keyword,
The WEB page display method according to claim 9 or 10, wherein presence / absence of confidentiality is determined based on a search result using the confidentiality keyword. Prior to downloading, the confidentiality search condition formula is stored,
When determining whether to have the confidentiality,
When the confidentiality tag cannot be searched, the WEB page data is searched using the confidentiality search conditional expression.
The WEB page display method according to claim 9, wherein presence / absence of confidentiality is determined based on a search result using the confidentiality search conditional expression. Prior to downloading, storing confidentiality keywords;
When determining whether to have the confidentiality,
Search the WEB page data using the confidentiality keyword,
The WEB page display method according to claim 8, wherein presence / absence of confidentiality is determined based on a search result using the confidentiality keyword. Prior to downloading, the confidentiality search condition formula is stored,
When determining whether to have the confidentiality,
Search the WEB page data using the confidentiality search conditional expression,
The WEB page display method according to claim 8, wherein presence / absence of confidentiality is determined based on a search result using the confidentiality search conditional expression. An operation unit that accepts user operations;
A transmission / reception unit for downloading WEB page data designated by the operation;
A data processing unit for processing the WEB page data;
A liquid crystal display for displaying a WEB page;
A viewing angle control unit for controlling the viewing angle of the liquid crystal display unit,
The data processing unit
A determination unit for determining whether or not the WEB page data has confidentiality;
When the determination unit determines that the WEB page data has confidentiality, the viewing angle narrowing command is issued to instruct the viewing angle control unit to narrow the viewing angle. A terminal device having a control command issuing unit. The determination unit
The terminal device according to claim 15, further comprising a tag search unit that searches for a confidentiality tag embedded in the WEB page data. The determination unit
When the confidentiality tag is searched, a reference unit that refers to the confidentiality attribute of the confidentiality tag;
The terminal device according to claim 16, further comprising: a confirmation unit that confirms whether or not the value of the confidentiality attribute is true. A keyword storage unit for storing the confidentiality keyword;
The determination unit
The terminal device according to claim 15, further comprising a keyword search unit that searches the WEB page data using the confidentiality keyword when the confidentiality tag cannot be searched. A conditional expression storage unit for storing a confidentiality search conditional expression;
The determination unit
The terminal device according to claim 15, further comprising: a conditional expression search unit that searches the WEB page data using the confidentiality search conditional expression when the confidentiality tag cannot be searched. . A keyword storage unit for storing the confidentiality keyword;
The determination unit
The terminal device according to claim 15, further comprising a keyword search unit that searches the WEB page data using the confidentiality keyword. It further has a conditional expression storage unit for storing the confidentiality search conditional expression,
The determination unit
The terminal device according to any one of claims 15 to 17 and 20, further comprising a conditional expression search unit that searches the WEB page data using the confidentiality search conditional expression. A WEB server for delivering WEB page data;
A WEB client for downloading the WEB page data;
The WEB server
Deliver WEB page data embedded with confidentiality tags,
The WEB client
An operation unit that accepts user operations;
A transmission / reception unit for downloading WEB page data designated by the operation;
A data processing unit for processing the WEB page data;
A liquid crystal display for displaying a WEB page;
A viewing angle control unit for controlling the viewing angle of the liquid crystal display unit,
The data processing unit
A determination unit for determining whether or not the WEB page data has confidentiality;
When the determination unit determines that the WEB page data has confidentiality, the viewing angle narrowing command is issued to instruct the viewing angle control unit to narrow the viewing angle. And the Directive Issuing Department
The determination unit
A network system including a tag search unit for searching for a confidential tag embedded in the WEB page data. The WEB server
Deliver WEB page data embedded with confidentiality tags with confidentiality attributes,
The determination unit
When the confidentiality tag is searched, a reference unit that refers to the confidentiality attribute;
The network system according to claim 22, further comprising: a confirmation unit that confirms the value of the confidentiality attribute.

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