JP5396872B2 - Terminal device and Web page data acquisition method - Google Patents

Description

  The present invention relates to a terminal device and a Web page data acquisition method that enable efficient browsing of Web pages.

  When a user uses a Web service for browsing a Web page on a Web server using a personal computer, a mobile phone, or a game device having a network access function, the sufficient Web service is used depending on the connection status with the network. There are things you can't do. Specifically, when the user is out or on the move, the network cannot be used at all, or even if the user can use the network, the access speed is not sufficient, or connection and disconnection to the network are repeated. In such a case, there arises a problem that the Web service cannot be used at all or cannot be used comfortably.

 In order to cope with this problem, there is a method in which the terminal device acquires the data of the Web page on the Web server that the user browsed in the past from the Web server and stores it. In this method, when a user browses a Web page and there is a problem in the use of the network, the terminal device does not acquire the Web page data from the Web server, but stores the Web page stored. It is a method of using the data.

 However, in this method, the web pages that can be browsed by the user when there is a problem in the use of the network are limited to the web pages browsed by the user in the past.

 Therefore, as another method, a method in which a Web page that is likely to be browsed by a user on the go or the like is specified by some method, and Web page data is acquired in advance from the corresponding Web server (prefetching method). Has been taken. As a method for specifying a Web page, various methods are conceivable, such as a method in which a user explicitly specifies a URL or the like, or a method of selecting a frequently used one from past Web page browsing history of the user. .

 The problem with the prefetching method is that, generally, a web page includes link destination information for specifying the URL of the linked web page linked from the web page. The extent to which data of the linked Web page is acquired. In general, since there is no restriction on the link of Web page links, it is practically impossible to acquire Web page data of all linked links one after another. In addition, when only the data of the web page that was browsed first is acquired, when the user browses the web page, other web pages linked from there cannot be browsed at all, which is convenient. It will be greatly damaged.

 In order to cope with this problem, Patent Document 1 discloses a method of limiting the data of a linked web page to be acquired based on the depth of the hierarchy from the first browsed web page. Here, the hierarchy means the depth of a link extending from a given Web page to each Web page. For example, the hierarchy of a web page directly linked to a given web page is one hierarchy. Further, the hierarchy of the Web page linked from the Web page whose hierarchy is one is two.

JP 2000-099438 A

 However, in recent Web pages, there are not a few cases where one Web page includes one hundred or more link destination information.

 For this reason, in the prefetching method, as disclosed in Patent Document 1, even if there is a restriction by hierarchy, the amount of data that needs to be acquired may be enormous. Further, when the terminal device is a mobile phone or a game machine, there is a limitation on storage capacity.

 Therefore, in the method described in Patent Document 1, the number of layers that can be prefetched is limited to a very few layers, and there is a problem that efficient prefetching cannot be performed.

  The objective of this invention is providing the terminal device and Web data acquisition method which can solve the subject mentioned above.

In order to achieve the above object, the terminal device of the present invention provides:
An acquisition unit for acquiring data of a first Web page on a Web server via a network;
A structure analysis unit that groups address information indicating the location of a second Web page linked from the acquired first Web page;
An input unit that allows a user to select a group for acquiring data of the second Web page from the grouped groups;
A prefetching unit that acquires data of a second Web page to which address information belongs to a group selected by the user from a Web server via the network;
A storage unit for storing data of the acquired first and second Web pages;
A display unit for displaying the data of the acquired first and second Web pages.

In order to achieve the above object, the Web page data acquisition method of the present invention includes:
An acquisition step of acquiring data of a first Web page on a Web server via a network;
A structure analysis step of grouping address information indicating the location of a second Web page linked from the acquired first Web page;
An input step for allowing a user to select a group for obtaining data of the second Web page from the grouped groups;
A prefetching step of acquiring data of a second Web page to which address information belongs to a group selected by the user from a Web server via the network;
A storage step of storing the acquired data of the first and second Web pages;
And displaying the acquired data of the first and second Web pages.

  According to the present invention, the terminal device groups address information indicating the location of another Web page linked to the Web page acquired from the Web server, and specified by the address information corresponding to the group selected by the user. Get Web page data.

  Therefore, since the address information is grouped, the user can select data to be prefetched more easily. Further, the terminal device has a plurality of layers because the data amount of the Web page to be acquired is limited by prefetching the data of the Web page specified by the address information corresponding to the group selected by the user. Efficient prefetching can also be performed for Web pages.

It is a figure which shows an example of a structure of the communication system with which the terminal device of this embodiment is applied. It is a block diagram which shows the structure of the terminal device of this embodiment. It is a figure which shows the structure of prefetch address information. It is a flowchart which shows an example of operation | movement of the terminal device at the time of registering prefetch address information. It is a figure which shows an example of the result of having performed the structure analysis of Web page data. It is a flowchart which shows an example of operation | movement of the terminal device at the time of utilizing a Web service.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram illustrating an example of a configuration of a communication system to which a terminal device according to the present embodiment is applied.

  The communication system according to the present embodiment provides a terminal device 100 used when a user 10 uses a Web service, a computer network 200 such as the Internet or a corporate network, and a Web service to the terminal device 100 via the computer network 200. And a Web server device 300 to be provided.

  The terminal device 100 may be a game device having a network connection function, an in-vehicle terminal, a television, or the like in addition to a PC (Personal Computer) and a mobile phone.

  The Web server device 300 provides a Web service that distributes Web pages such as news providing sites, SNS (Social Networking Service) sites, video sharing sites, and blog sites via the computer network 200.

  In addition, the Web server device 300 manages Web page data (HTML file, XML file, image file, database, script file, etc.) constituting the Web service, and the Web page data is transmitted via the computer network 200. Assume a configuration of a general Web server device having an HTTP (HyperText Transfer Protocol) server function for transmission and reception with the terminal device 100.

  FIG. 2 is a block diagram illustrating a configuration of the terminal device 100.

  In the following description, Web page data that the terminal device 100 acquires from the Web server device 300 based on the URL specified by the user 10 is referred to as “Web page data”. Further, the data of the Web page that the terminal device 100 acquires from the Web server device 300 based on the URL specified by the link destination information indicating the link to another Web page included in the “Web page data” is displayed as “Link destination”. It is called “Web page data”.

  The terminal device 100 includes an input unit 101, a Web application execution control unit 102, an output unit 103, a communication control unit 104, and a prefetch control unit 110.

  The input unit 101 outputs operation information of an operation input by the user 10 to the Web application execution control unit 102. Specific examples of the input unit 101 include a keyboard and a mouse.

  The web application execution control unit 102 acquires the web page data of the URL specified by the user 10 via the input unit 101 from the web server device 300. The web application execution control unit 102 manages the prefetch control unit 104 in order to acquire link destination web page data from the web server device 300. In addition, the Web application execution control unit 102 causes the output unit 103 to display a screen for requesting the user 10 to answer the acquired Web page data or whether a predetermined operation is necessary.

 The output unit 103 is a display unit that displays a screen for requesting the user 10 to answer web page data or whether a predetermined operation is necessary. A specific example of the output unit 103 is a display or the like.

  The communication control unit 104 controls communication with the Web server device 300.

  The prefetch control unit 110 acquires and stores link destination web page data from the web server device 300 based on the URL group selected by the user 10 under the management of the web application execution control unit 102. The URL group will be described later.

  Hereinafter, the internal configuration of the prefetch control unit 110 will be described.

  The prefetch control unit 110 includes a structure analysis unit 111, a prefetch address information setting unit 112, a prefetch address information registration unit 113, a data prefetch unit 114, a prefetch data use control unit 115, and a prefetch data storage unit 116. Have.

 The structure analysis unit 111 analyzes the structure of the Web page data output from the Web application execution control unit 102, and implements grouping of URLs specified by the link destination information included therein. In addition, as a result of the structural analysis, the structural analysis unit 111 generates unique ID information for each URL group obtained by grouping URLs specified by link destination information and the URL. Then, the structure analysis unit 111 outputs the result of the structure analysis and the generated ID information to the Web application execution control unit 102. The ID information generated for each URL group is referred to as a group ID.

 The prefetch address information setting unit 112 uses the URL specified by the user 10 via the input unit 101 and the group ID of the URL group that the user 10 has selected to acquire link destination Web page data as the prefetch address information. Register in the registration unit 113. Note that the URL and group ID registered as prefetch address information are output from the Web application execution control unit 102.

 FIG. 3 is a diagram illustrating an example of prefetch address information registered in the prefetch address information registration unit 113. In FIG. 3, the URL designated by the user 10 via the input unit 101 corresponds to URL 1 registered as the prefetch URL of the prefetch address information. In addition, the group ID of the URL group selected by the user 10 as acquisition of link destination Web page data corresponds to the group IDs 1, 2, 3-1, etc. registered as the prefetch link group ID.

 The prefetch address information registration unit 113 outputs the registered prefetch address information to the data prefetch unit 114.

 The data prefetching unit 114 is registered as a prefetching URL from the Web server device 300 via the communication control unit 104 with reference to the prefetching address information acquired from the prefetching address information registration unit 113 at a preset time or the like. Web page data and link destination Web page data of the URL Web page are acquired. That is, the terminal device 100 of the present invention acquires Web page data from the Web application execution control unit 102 or the data prefetching unit 114. Then, the data prefetch unit 114 stores the acquired web page data and link destination web page data in the prefetch data storage unit 116.

 The prefetch data usage control unit 115 specifies the web page URL stored in the prefetch data storage unit 116 and the link destination when the user 10 specifies the URL of the web page and tries to use the web service for browsing the web page. It is determined whether to use Web page data or to acquire Web page data from the Web server device 300. When the prefetch data use control unit 115 determines to use the web page data or the link destination web page data stored in the prefetch data storage unit 116, the web page data or the link destination web page corresponding to the specified URL is used. Data is acquired from the prefetch data storage unit 116. In addition, when the prefetch data use control unit 115 accesses the Web server device 300 and determines to acquire Web page data from the Web server device 300, the prefetch data usage control unit 115 transmits the Web page data from the Web server device 300 via the communication control unit 104. Get the data. Then, the prefetch data usage control unit 115 outputs the web page data acquired from the prefetch data storage unit 116 or the web server device 300 to the web application execution control unit 102.

 The prefetch data storage unit 116 outputs the saved link destination web page data to the prefetch data usage control unit 115.

  Next, the operation of the terminal device 100 will be described with reference to FIGS.

(1) Operation of Terminal Device 100 when Registering Prefetch Address Information FIG. 4 is a flowchart showing an example of operation of the terminal device 100 when the user 10 registers prefetch address information.

(1-1) Operation of Terminal Device 100 when Registering Prefetch URL of Prefetch Address Information User 10 requests Web application execution control unit 102 to start prefetch URL registration via input unit 101. (Step A1).

  The Web application execution control unit 102 displays on the output unit 103 a screen requesting specification of the URL of the Web page to be registered as the prefetch URL. Then, the web application execution control unit 102 accesses the web server device 300 based on the URL specified by the user 10 via the input unit 101 and acquires web page data from the web server device 300. Then, the Web application execution control unit 102 displays the acquired Web page data on the output unit 103 (Step A2).

  Next, the Web application execution control unit 102 outputs the URL of the Web page designated by the user 10 to the prefetch address information setting unit 112 of the prefetch control unit 110.

 The prefetch address information setting unit 112 registers the URL of the web page output from the web application execution control unit 102 in the prefetch address information registration unit 113 as the prefetch URL of the prefetch address information as shown in FIG. 3 (step A3). .

(1-2) Operation of terminal apparatus 100 when registering prefetch link group ID of prefetch address information When registration of the URL of the web page designated by the user 10 is completed, the web application execution control unit 102 then 10, the output unit 103 displays a screen requesting an answer as to whether or not it is necessary to acquire the link destination Web page data of the Web page specified by the link destination information included in the Web page data currently displayed on the output unit 103 (Step A4).

 When the user 10 replies to acquiring linked web page data (step A4: YES), the web application execution control unit 102 outputs the web page data currently displayed on the output unit 103 to the structure analysis unit 111, The structure analysis unit 111 is requested to analyze the structure of the Web page data.

 The structure analysis unit 111 performs a structure analysis of the Web page data output from the Web application execution control apparatus 102 (Step A5). Here, the URL specified by the link destination information included in the Web page data indicates the location of the data of the Web page constituting the Web service existing on the network. Generally, the type of information and the server Name, port number, folder name, file name, etc. The structure analysis unit 111 groups URLs for each information type, server name, port number, folder name, and file name, for example.

 FIG. 5 is a diagram illustrating an example of the result of structural analysis in the structural analysis unit 111.

 As shown in FIG. 5, 10 URLs (URL1-1, 1-2, 1-3, 2-1, 2-1) are obtained by link destination information included in Web page data acquired based on URL1 specified by the user 10. 2-2, 2-3, 3-1-1, 3-1-2, 3-2-1, 3-2-2) are specified. The URL is represented in the order of “information type” — “folder name” — “file name”, for example. In the example of FIG. 5, URLs 1-1, 1-2, 1-3 and 2-1, 2-2, 2-3 have the same “information type”. URLs 3-1-1, 3-1-2, 3-2-1, and 3-2-2 indicate that “information type” is common, but “folder names” are different URLs. ing.

 The structure analysis unit 111 first performs grouping for each “information type”. Since the URLs 1-1, 1-2, and 1-3 have a common “information type” of “1”, they are regarded as one group (URL group 1). Similarly, the URLs 2-1, 2-2, and 2-3 have a common “information type” of “2”, and thus are set as one group (URL group 2). In addition, since the URL groups 3-1-1, 3-1-2, 3-2-1, 3-2-2 have the same “information type” as “3”, one group (URL group 3 ). Here, since the URLs 3-1-1 and 3-1-2 and the URLs 3-2-1 and 3-2-2 have different “folder names” of “1” and “2”, the structure analysis unit 111 Further, the URL group 3 is grouped. That is, the structure analysis unit 111 sets the URLs 3-1-1 and 3-1-2 that have the same "folder name" as "1" as one group (URL group 3-1), and similarly the "folder name" URLs 3-2-1 and 3-2-2 that are common to “2” are set as one group (URL group 3-2). That is, the structure analysis unit 111 can also make the URL group multi-layered so that the URL group 3 includes two URL groups (URL groups 3-1 and 3-2).

 As described above, the structure analysis unit 111 groups URLs according to URL components or the like. In the above-described example, an example is shown in which URLs are grouped by “type of information” and “folder name” constituting the URL, but the present invention is not limited to this.

 Then, the structure analysis unit 111 generates unique ID information for each URL group and URL, and then outputs the structure analysis result and the generated ID information to the Web application execution control unit 102.

 The web application execution control unit 102 redisplays the web page data currently displayed on the output unit 103 based on the structural analysis result output from the structural analysis unit 111 (step A6). At this time, it is possible to provide various user interfaces for displaying the Web page data and selecting the URL group so that the user 10 can easily select the URL group from which the linked Web page data is desired. It is. As a user interface, there is a method in which link destination information on Web page data is displayed in a different color for each URL group so that the user 10 can easily distinguish and select a URL group to be prefetched. Further, when the user 10 once clicks on link destination information in the Web page data displayed on the output unit 103 by using the input unit 101 such as a mouse, the user 10 enters a URL group including the URL specified by the link destination information. When all the link destination information included is colored, and the link destination information is clicked again, all the link destination information included in the upper (parent) URL group on the structural analysis tree in FIG. There is also a method in which the colored link destination information is used as the link destination information of the URL group selected by the user by repeating the coloring. Although two methods have been described here as examples, the method of causing the user 10 to select a URL group to be prefetched using the result of the structural analysis is not limited to these.

 Next, when the user 10 selects a URL group for acquiring linked Web page data via the input unit 101 (step A7), the Web application execution control unit 102 selects a group corresponding to the URL group selected by the user 10. The ID is output to the prefetch address information setting unit 112.

 The prefetch address information setting unit 112 registers the group ID output from the Web application execution control unit 102 in the prefetch address information registration unit 113 as a prefetch link group ID of the prefetch address information as shown in FIG. A8).

 That is, in the prefetch address information registration unit 113, as shown in FIG. 3, the URL designated by the user 10 is registered as the prefetch URL of the prefetch address information. Further, in the prefetch address information registration unit 113, the group ID of the URL group selected when the user 10 acquires the link destination web page data for each prefetch URL is registered as the prefetch link group ID of the prefetch address information.

(1-3) Operation of terminal device 100 when additionally registering prefetch URL of prefetch address information On the other hand, when the user 10 replies that link destination web page data is not acquired (step A4: NO), web application execution The control unit 102 displays, on the output unit 103, a screen that requests the user 10 to reply to whether or not additional registration is necessary as a prefetch URL of a URL of a different Web page (step A9). When the user 10 replies that the prefetch URL is not additionally registered (step A9: NO), the Web application execution control unit 102 ends the prefetch URL registration, displays the fact on the output unit 103, and notifies the user 10 Notification is made (step A10).

 On the other hand, when the user 10 replies that the URL of a different Web page is additionally registered as a prefetch URL (step A9: YES), the terminal device 100 repeats the processing from step A2. That is, the terminal device 100 also performs the operations from step A2 to step A8 for the URL (URL2) to be additionally registered, and the URL specified by the user 10 in the prefetch address information registration unit 113 or the user 10 selects it. The URL group ID is registered as prefetch address information.

 In step A9, for example, the URL indicated by URL 1-1 in FIG. 5 is additionally registered as a pre-read URL, and the operations from step A2 to step A8 are repeated, whereby the web page of the web page specified by URL 1-1 Structural analysis can also be performed on data. Then, the structure analysis unit 111 is identified from the Web page specified by the user 10 by combining the structure analysis result for the Web page specified by the URL specified by the user 10 and including the URL 1-1 as the link destination information. It is also possible to create a hierarchical structure analysis tree including Web pages having

(2) Operation of terminal device 100 when acquiring linked web page data from prefetched address information Next, the terminal device 100 performs web server device 300 based on the prefetched address information registered in the prefetched address information registration unit 113. The operation when acquiring linked web page data from the web page will be described.

 The data prefetching unit 114 obtains prefetch address information from the prefetch address information registration unit 113, and obtains the web page data of the web page of the URL registered as the prefetch URL from the obtained prefetch address information. In addition, the data prefetching unit 114 determines the URL of the web page from which the link destination web page data is acquired from the prefetch address information. Then, the data prefetching unit 114 accesses the web server device 300 based on the determined URL, acquires the link destination web page data from the web server device 300, and uses the obtained web page data and link destination web page data as the prefetch data. The data is stored in the storage unit 116.

(2-1) Operation of Terminal Device 100 when Determining URL of Web Page for Obtaining Linked Web Page Data from Prefetch Address Information Next, the data prefetch unit 114 obtains linked web page data from the prefetch address information The operation of determining the URL of the Web page to be described will be described based on the specific examples described in FIGS.

 First, the data prefetching unit 114 accesses the Web server apparatus 300 based on URL1, URL2, and URL3 registered as prefetch URLs of the prefetch address information, and acquires each Web page data from the Web server apparatus 300. Next, the data prefetching unit 114 determines whether or not it is necessary to acquire the link destination Web page data included in the Web page data for each of the Web page data acquired based on URL1, URL2, and URL3. This is determined with reference to the prefetch address information. Taking URL1 as an example, group IDs 1, 2, and 3-1 are registered as prefetch link group IDs. Therefore, the data prefetching unit 114 performs structural analysis again on the Web page data acquired by URL1, and creates a structural analysis tree by the same method as shown in FIG. Then, the data prefetching unit 114 determines the URL in which the prefetched link group ID is registered in the prefetched address information, as the URL of the web page for acquiring the link destination web page data, from the group of the generated structural analysis tree. In the examples of FIGS. 3 and 5, since group IDs 1, 2, and 3-1 are registered as prefetch link group IDs in the prefetch address information, the URL 1-1 included in the group IDs 1, 2, and 3-1 in FIG. , 1-2, 1-3, 2-1, 2-2, 2-3, 3-1-1, 3-1-2 are determined as URLs that require acquisition of linked Web page data. Similarly, the data prefetching unit 114 performs structural analysis on the Web page data acquired by URL2, and creates a structural analysis tree. Then, the data prefetching unit 114 links the linked web page based on the group ID (group IDs 2-1 and 2-2 in FIG. 3) registered as the prefetched link group in the prefetched address information and the created structural analysis tree. The URL of a Web page that requires data acquisition is determined. In addition, the data prefetching unit 114 does not perform further prefetching because the prefetch link group ID is not registered in the prefetch address information for URL3.

 In the above example, the data prefetching unit 114 performs the structural analysis on the Web page data acquired based on the prefetching URL. However, the present invention is not limited to this. It is also possible to obtain the result.

(3) Operation of Terminal Device 100 When User 10 Uses Web Service Next, an operation when the user 10 uses the Web service will be described with reference to FIGS. 2 and 6.

 FIG. 6 is a flowchart illustrating an example of the operation of the terminal device 100 when the user 10 uses the Web service. In the following description, the data of the web page acquired by the data prefetching unit 114 from the web server 300 and stored in the prefetching data storage unit 116 is referred to as “prefetching data”.

 The user 10 designates the URL of the Web page via the input unit 101, and requests the use of a Web service for browsing the Web page (Step B1).

 Next, the Web application execution control unit 102 transmits the URL corresponding to the Web page designated by the user 10 via the input unit 101 to the prefetch data usage control unit 115, and the data of the Web page corresponding to the URL is transmitted. Acquisition is requested (step B2).

 The prefetch data usage control unit 115 acquires web page data from the web server device 300 via the computer network 200 in response to a web page data acquisition request from the web application execution control unit 102, or prefetching. It is determined whether to use the prefetched data stored in the data storage unit 116 (step B3). As a determination method at the time of determination, a method of determining whether or not the computer network 200 can be used at present, a method of specifying which Web page data to use when the user 10 uses a Web service, or There are various methods such as a method in which a user determines in advance a URL for using prefetched data stored in the prefetched data storage unit 116 and a URL for acquiring Web page data from the Web server device 300.

 When the prefetch data usage control unit 115 determines to acquire Web page data from the Web server device 300 (step B3: NO), the prefetch data usage control unit 115 acquires Web page data from the Web server device 300 via the communication control unit 104 ( Step B5). On the other hand, when it is determined that the prefetch data stored in the prefetch data storage unit 116 is to be used (step B3: YES), the prefetch data usage control unit 115 acquires prefetch data corresponding to the designated URL from the prefetch data storage unit 116. (Step B4). Then, the prefetch data usage control unit 115 outputs the web page data acquired from the server device 300 or the prefetch data storage unit 116 to the web application execution control unit 102.

 The Web application execution control unit 102 displays the Web page data acquired from the prefetch data usage control unit 115 on the output unit 103 (step B6).

  The terminal device and the Web page data acquisition method according to the present invention are suitable for use in a PC, a mobile phone, or a terminal device having a network function.

DESCRIPTION OF SYMBOLS 100 Terminal apparatus 200 Computer network 300 Web server apparatus 101 Input part 102 Web application execution control part 103 Output part 104 Communication control part 110 Prefetch control part 111 Structure analysis part 112 Prefetch address information setting part 113 Prefetch address information registration part 114 Data prefetch part 115 Prefetched data use control unit 116 Prefetched data storage unit

Claims (2)

An acquisition unit for acquiring data of a first Web page on a Web server via a network;
A structure analysis unit that groups address information indicating the location of a second Web page linked from the acquired first Web page;
An input unit that allows a user to select a group for acquiring data of the second Web page from the grouped groups;
A prefetching unit that acquires data of a second Web page to which address information belongs to a group selected by the user from a Web server via the network;
A storage unit for storing data of the acquired first and second Web pages;
A display unit for displaying the data of the acquired first and second Web pages;
In response to the browsing request for the first and second Web pages, the storage unit or the Web server is used as the data acquisition destination of the first and second Web pages requested to be browsed depending on whether or not the network is available. A data usage control unit that determines any of
The display unit displays Web page data acquired from the acquisition destination determined by the data use control unit, and displays link destination information for specifying address information of the second Web page on the first Web page. The terminal device that displays the link destination information in a different color for each of the grouped groups . An acquisition step of acquiring data of a first Web page on a Web server via a network;
A structure analysis step of grouping address information indicating the location of a second Web page linked from the acquired first Web page;
An input step for allowing a user to select a group for obtaining data of the second Web page from the grouped groups;
A prefetching step of acquiring data of a second Web page to which address information belongs to a group selected by the user from a Web server via the network;
A storage step of storing the acquired data of the first and second Web pages;
A display step for displaying the data of the acquired first and second Web pages;
Depending on the read request of the first and second 2Web pages, where to obtain the data of the first and second 2Web pages the browse request, the network depending on whether available, first in the storage step And a data use control step for determining either the data storage destination of the second Web page or the Web server,
In the display step, the Web page data acquired from the acquisition destination determined in the data use control step is displayed, and on the first Web page, link destination information specifying the address information of the second Web page is displayed. A Web page data acquisition method for displaying the link destination information in a different color for each of the grouped groups .

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