JP2011096201A - Web page display program, web page display method, web page display device, and web page display system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quickly switch Web pages to be displayed for providing a new use of the Internet. <P>SOLUTION: The Web page display program included in a predetermined Web page causes a computer to execute an initialization procedure and a switching procedure. The initialization procedure includes: acquiring a list of URLs from an external device, generating, for every two or more URLs contained in the acquired list of URLs, a display component for displaying Web pages corresponding to the URLs to the predetermined Web page, causing a Web browser to acquire Web pages from the corresponding URLs and draw the acquired Web pages for each display component, and visualizing a part of the display component while hiding the other display components. The switching means includes: hiding a part or all of the display components which has been visualized, in response to an instruction input to switch display object to the predetermined Web page, and visualizing at least part of the hidden display component. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a web page display program, a web page display method, a web page display device, and a web page display system, and more particularly to a web page display program, a web page display method, a web page display device, and a web page display program. The present invention relates to a Web page display system.

  Currently, the general way of using the Internet is as follows. When the target Web site is known, the URL (Uniform Resource Locator) of the Web site is input to the Web browser, or the menu item of the Web site is selected from bookmarks. The web page is displayed on the web browser.

  Or, if the target website is unknown, the desired web site is displayed on the web browser by selecting the desired one from the search results obtained by entering the keyword into the search site. (For example, Patent Document 1).

  In addition, information can be traced from a link pasted on a web page displayed on the web browser.

  Thus, in order to use the Internet, the existence of a purpose has been indispensable in the user's consciousness. That is, it can be said that all operations such as inputting a URL, selecting a bookmark, inputting a keyword, or selecting a link are the result of decision making based on the purpose of the user. In the first place, in view of the fact that a Web page is obtained only when there is some input, it seems natural that a purpose exists when using the Internet.

JP 2006-48684 A

  However, from a different viewpoint, it is considered that the range of information that users can meet on the Internet is significantly narrowed due to the existence of the purpose. That is, if the purpose is assumed at the entrance of the Internet, the information that the user can obtain from the Internet is always limited to the target range, that is, only a small part of the vast amount of information on the Internet. End up. As a result, the user has not fully enjoyed the value of the Internet.

  Therefore, the present inventor is examining a completely new method of using the Internet. Specifically, it is the realization of an environment in which content on the Internet can be passively browsed, such as television and radio. For example, on TV, you can search for interesting programs by changing channels without any purpose. If the Internet can provide such passive usage, it can create accidental encounters with unknown information that the user does not expect, making the Internet more accessible. it can. For that purpose, it is considered that high speed operability which is not conventional is an important factor. Specifically, it is considered that the Web page to be displayed needs to be switched at high speed so as to switch the TV channel.

  The present invention has been made in view of the above points, and is a Web page display program capable of high-speed switching of Web pages to be displayed in order to provide a new usage form of the Internet, An object is to provide a web page display method, a web page display device, and a web page display system.

  In order to solve the above-described problem, the present invention provides a Web page display program included in a predetermined Web page, and acquires a list of URLs from an external device to a computer on which the predetermined Web page has been downloaded. A display component that displays a Web page corresponding to the URL for each of two or more URLs included in the list of generated URLs is generated for the predetermined Web page, and the Web from the corresponding URL is displayed for each display component. An initialization procedure for causing the web browser to acquire a page and drawing the acquired web page, to visualize some of the display components, and to make the display components other than the portion invisible, and the predetermined web A table of some or all of the display components that have been visualized according to the input of a display target switching instruction to the page The parts were invisible, at least a portion of the display components of the display component that was invisible to perform a switching procedure for visualization.

  Such a Web page display program can enable high-speed switching of Web pages to be displayed in order to provide a new usage form of the Internet.

  ADVANTAGE OF THE INVENTION According to this invention, in order to provide the new usage form of the internet, the high-speed switching of the web page made into display object can be performed.

It is a figure which shows the structural example of the web page display system in embodiment of this invention. It is a figure which shows the hardware structural example of the user terminal in embodiment of this invention. It is a figure which shows the function structural example of the web page display system in embodiment of this invention. FIG. 10 is a sequence diagram for explaining a processing procedure when a main page is downloaded to a Web browser and the main page is initially displayed. It is a figure which shows notionally the structure of the main page in this Embodiment. It is a figure which shows the structural example of delivery page information DB. It is a figure for demonstrating the method of making an inline frame invisible. It is a figure for demonstrating the behavior of the main page when the next button is clicked. It is a flowchart for demonstrating the process sequence performed according to clicking of the next button. It is a figure for demonstrating the behavior of the main page when the previous button is clicked. It is a flowchart for demonstrating the process sequence performed according to clicking of the front button.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration example of a Web page display system according to an embodiment of the present invention. In the figure, the Web page display system 1 includes user terminals 10a, 10b, 10c and the like (hereinafter, collectively referred to as “user terminal 10”), and an information providing server 20 and the like. The user terminal 10 and the information providing server 20 are connected via a network such as a LAN (Local Area Network) or the Internet.

  The user terminal 10 is a computer such as a PC (Personal Computer) provided with a Web browser 11. As long as the Web browser 11 can be mounted, an electronic device other than a PC may be used as the user terminal 10.

  The information providing server 20 is a computer that provides the user terminal 10 with a Web page for providing the user of the user terminal 10 with a new operational feeling for the Internet. That is, the user can use the Internet with a new feeling of operation by the Web page obtained by the Web browser 11 of the user terminal 10 accessing the Web site of the information providing server 20. In the present embodiment, the new operational feeling means being passive and being able to browse information (Web page) at high speed.

  In the present embodiment, the user terminal 10 is an example of a Web page display device. The information providing server 20 is an example of an external device.

  FIG. 2 is a diagram illustrating a hardware configuration example of the user terminal according to the embodiment of the present invention. The user terminal 10 in FIG. 2 includes a drive device 100, an auxiliary storage device 102, a memory device 103, a CPU 104, an interface device 105, a display device 106, and an input device 107, which are mutually connected by a bus B. And have.

  A program for realizing processing in the user terminal 10 is provided by a recording medium 101 such as a CD-ROM. When the recording medium 101 on which the program is recorded is set in the drive device 100, the program is installed from the recording medium 101 to the auxiliary storage device 102 via the drive device 100. However, the program need not be installed from the recording medium 101 and may be downloaded from another computer via a network. The auxiliary storage device 102 stores the installed program and also stores necessary files and data.

  The memory device 103 reads the program from the auxiliary storage device 102 and stores it when there is an instruction to start the program. The CPU 104 realizes functions related to the user terminal 10 in accordance with a program stored in the memory device 103. The interface device 105 is used as an interface for connecting to a network. The display device 106 displays a GUI (Graphical User Interface) or the like by a program. The input device 107 includes a keyboard and a mouse, and is used for inputting various operation instructions.

  The information providing server 20 only needs to have the hardware configuration shown in FIG. However, the information providing server 20 does not necessarily require the display device 106 and the input device 107.

  FIG. 3 is a diagram illustrating a functional configuration example of the Web page display system according to the embodiment of the present invention.

  In the figure, the information providing server 20 includes a main page providing unit 21, a distribution page list providing unit 22, a distribution page information DB 23, a main page 500, and the like. The main page providing unit 21, the distribution page list providing unit 22, and the distribution page information DB 23 are realized by processing that a program installed in the information providing server 20 causes the CPU of the information providing server 20 to execute.

  The main page providing unit 21 provides the main page 500 to the user terminal 10 in response to a request from the user terminal 10. The main page 500 is a Web page for providing a new operational feeling for the Internet, and is stored in the auxiliary storage device of the information providing server 20.

  The distribution page list providing unit 22 provides the user terminal 10 with a list of distribution page information registered in the distribution page information DB 23 in response to a request from the user terminal 10. One delivery page information includes a URL (Uniform Resource Locator) of one delivery page. The distribution page is a Web page (HTML (HyperText Markup Language) data) selected in advance from the viewpoint of generally attracting the user's interest, such as “interesting” or “popular”. The delivery page information DB 23 is a database that stores a list of delivery page information using the auxiliary storage device of the information providing server 20. The selection of the distribution page and the registration of the distribution page information in the distribution page information DB 23 may be performed manually or automatically by means not shown.

Examples of distribution page selection criteria include the following.
(1) Contents related to the latest events, incidents, or accidents are posted.
(2) Contents related to keywords that are attracting attention in the world are posted.
(3) We get support from many Internet users.
(4) A person or website with strong influence recommends it.

In order to collect Web pages like (1) to (4), for example, the following information may be used.
(A) Latest news of news site (b) Ranking information of popular sites provided on a predetermined Web site (c) Keyword of interest on a predetermined search site (keyword whose number of input is rapidly increasing)
(D) Number of bookmarks in a website providing a shared bookmark Collected information such as (a) to (d) above, and obtained by searching based on the web page indicated by the information or the information A web page or the like to be used may be a delivery page.

  However, in the present embodiment, the distribution page selection criteria and the collection method are not limited to predetermined ones. It is sufficient that a state in which information related to at least a considerable number of distribution pages is registered in the distribution page information DB 23 is constructed. For example, a set of Web pages in which a news article on the latest or the current day is described may be used as a delivery page regardless of the above selection criteria.

  On the other hand, the user terminal 10 has a Web browser 11. The web browser 11 is a commonly used web browser, and it is not necessary to mount a special function for the present embodiment. FIG. 3 shows a state where the main page 500 is downloaded on the Web browser 11. When the main page 500 is downloaded onto the Web browser 11, the script program 12 (for example, JavaScript (registered trademark)) included in the main page 500 (described in the main page 500) is transmitted to the user terminal 10. Are functioned as an initialization unit 121, a page switching unit 122, and the like.

  The initialization unit 121 executes initialization processing related to the script program 12 when the main page 500 is downloaded to the Web browser 11. The initialization unit 121 acquires distribution page information for a predetermined number of pages from the information providing server 20 as part of the initialization process. The initialization unit 121 also accesses a URL included in the acquired distribution page information, acquires the distribution page, and causes the Web browser 11 to perform rendering (rendering) of the acquired distribution page. However, only one of the drawn distribution pages is visualized. The page switching unit 122 switches the distribution page to be visualized (that is, the distribution page to be displayed) among the drawn distribution pages.

  Hereinafter, the processing procedure of the Web page display system 1 will be described. FIG. 4 is a sequence diagram for explaining a processing procedure when the main page is downloaded to the Web browser and the main page is initially displayed. In the initial state of the figure, the main page 500 is not downloaded to the Web browser 11.

  When the user inputs a URL for the main page 500 to the Web browser 11, the Web browser 11 sends an acquisition request (HTTP (HyperText Transfer Protocol) request) for the main page 500 to the URL, that is, to the information providing server 20. Transmit (S101). In response to the acquisition request for the main page 500, the main page providing unit 21 of the information providing server 20 returns an HTTP response including the main page 500 to the web browser 11 (S102).

  In response to the reception of the main page 500, the Web browser 11 draws the main page 500 and displays it on the display device 106 (S103).

  FIG. 5 is a diagram conceptually showing the structure of the main page in the present embodiment. In the figure, a main page 500 has an operation panel 510, a content area 520, an additional information area 530, and the like.

  The content area 520 is an area in which display components for displaying content, that is, distribution pages, are arranged. A plurality of the display components exist at the same time, and are managed in an ordered manner. In this embodiment, an example in which an inline frame is used as such a display component will be described. This is because it is preferable to use an inline frame in view of the specifications of current JavaScript (registered trademark), HTML, and Web browser 11. However, display components other than the inline frame may be used according to the update of the specifications of each technology.

  An inline frame is a frame defined by an <IFRAME> tag in HTML, and has a characteristic that other web pages can be displayed on a certain web page. In the present embodiment, each in-line frame (hereinafter simply referred to as “frame”) is assigned with a distribution page downloaded by subsequent processing and rendered. That is, the content area 520 after the distribution page is downloaded is in a state where a plurality of frames each having the distribution page drawn therein are arranged. However, when the delivery page is drawn in each of the plurality of frames, the display state in the content area 520 is confused. Therefore, in this embodiment, in order to avoid such confusion, one frame is always visualized and the other frames are made invisible.

  More specifically, each frame has three types of states: “current”, “prefetch”, and “history”. The current state refers to the state currently being visualized. Only one frame can be in the current state. Accordingly, only one of the plurality of frames is visualized and occupies the entire content area 520. At the timing when the main page 500 is first displayed, the first frame is in the current state.

  The pre-reading state refers to a state positioned after the frame in the current state in ordering between frames (hereinafter simply referred to as “display order”). The history state refers to a state located before the frame of the current state in the display order. Frames in the prefetched state or the history state are not visualized (invisible). The frame in the current state, the frame in the prefetched state, and the frame in the history state are referred to as “current frame”, “prefetched frame”, and “history frame”, respectively.

  The operation panel 510 includes a previous button 511, a next button 512, a URL display text box 513, and the like. The previous button 511 and the next button 512 are buttons for receiving an instruction to switch the current frame. The URL display text box 513 displays the URL of the distribution page assigned to the current frame (ie, the currently displayed distribution page).

  The additional information area 530 is an area for displaying additional information of the distribution page assigned to the current frame.

  In step S103, no frame has been created, and no delivery page has been downloaded. Therefore, the main page 500 in step S103 is in a state where the operation panel 510, the empty content area 520, and the empty additional information area 530 are displayed.

  In response to the display of the main page 500, the initialization unit 121 acquires parameters used by the script program 12 and sets event handlers for operations on the operation panel 510 (S104). As parameters, the maximum number of prefetch frames and the maximum number of history frames are acquired. The maximum number of prefetch frames is the maximum number of frames held as prefetch frames. The maximum number of history frames is the maximum number of frames held as history frames. Each parameter is set, for example, in an invisible (hidden) form of the main frame. Therefore, the initialization unit 121 acquires each parameter from the form.

  The event handler setting is a function for causing the user terminal 10 to function as the page switching unit 122 among the functions included in the script program 12, when the previous button 511 and the next button 512 are clicked. To register as an event handler.

  Subsequently, the initialization unit 121 transmits an acquisition request for a list of distribution page information to the information providing server 20 (S105). In the acquisition request, the acquisition reference position and the acquisition number are specified as parameters. The acquisition range for the distribution page information that is ordered and registered in the distribution page information DB 23 is specified by the acquisition reference position and the acquisition number. That is, the acquisition reference position indicates the starting point of the acquisition range. The number of acquisitions indicates the number of distribution page information acquired sequentially from the starting point. When the main page 500 is displayed, “1” is designated as the acquisition reference position. That is, it is the head in the ordering of the delivery page information DB 23. In the present embodiment, “20” is designated as the number of acquisitions. Therefore, in step S105, the acquisition of 20 pieces of delivery page information from the top is requested.

  Subsequently, the distribution page list providing unit 22 of the information providing server 20 acquires the distribution page information corresponding to the acquisition reference position and the acquisition number specified in the distribution page information list acquisition request from the distribution page information DB 23 and acquires them. The delivered page information is returned to the initialization unit 121 (S106).

  FIG. 6 is a diagram illustrating a configuration example of the distribution page information DB. In the figure, the distribution page information DB 23 manages distribution page information such as order, URL, title, and additional information for each distribution page. The order is the order of delivery pages. The order is handled as the display order of the distribution pages on the user terminal 10 side. URL is the URL of the delivery page. The title is the title of the distribution page. The additional information is arbitrary additional information related to the distribution page.

  Here, “1” is designated as the acquisition reference position, and “20” is designated as the number of acquisitions. Therefore, a list of delivery page information recorded in the records with the order of 1 to 20 is returned to the initialization unit 121. The initialization unit 121 records a list of received distribution page information in the memory device 103. Hereinafter, a list of distribution page information recorded in the memory device 103 is referred to as an “acquired list”.

  Subsequently, the initialization unit 121 generates (the maximum number of prefetched frames + 1) frames at the size of the content area 520 (S107). Here, +1 is the current frame. For example, if the maximum number of prefetch frames is “2”, three frames are generated. The initialization unit 121 assigns the order of distribution pages assigned to each frame. For example, when three frames are generated, the order of 1 to 3 is given to each frame. The order given to each frame is used as the display order between frames. In addition, the initialization unit 121 visualizes the frame with the youngest order (that is, the head), and makes the other frames invisible. That is, the first frame is set to the current state, and the other frames are set to the prefetched state. A value indicating the order of frames in the current state is hereinafter referred to as “current position”. In the initial state, the current position is “1”.

  FIG. 7 is a diagram for explaining a method of making a frame invisible. If the script program 12 is JavaScript (registered trademark), the position of the frame is specified by either a pixel value or a percentage. In the figure, an example in which the position is specified by a percentage is shown.

  When the position is designated by the percentage, the width of the window of the Web browser 11 (substantially the width of the main page 500) is set to 100%. In the figure, an example in which the width of the main page 500 is X pixels is shown. Therefore, the X pixel is 100%. Therefore, in the present embodiment, the initialization unit 121 sets the initial value of the left position of the generated frame to −150%. The -150% position is as shown in FIG. That is, the position is shifted to the left by (X + X / 2) pixels from the left position of the main page 500. As a result, the frame area does not overlap the display area of the main page 500 at all. Therefore, the frame is not displayed, that is, is made invisible.

  As is clear from FIG. 7, the absolute value of the left position may be a value smaller than −150%. For example, it may be -110%. In FIG. 7, for convenience, the vertical position of the frame coincides with the position of the content area 520. However, as long as the left position is sufficiently deviated, the vertical position is whatever. Good. Furthermore, although an example in which the frame is shifted leftward has been described in the present embodiment, it may be shifted rightward or up-down as long as it does not overlap the main page 500.

  On the other hand, the arrangement position of the frame that is not made invisible, that is, the top frame, is a position where the entire area of the frame overlaps the content area 520. However, initially, all the frames may be made invisible, and only the top frame may be made visible after the delivery page is drawn in the frame.

  Subsequently, the initialization unit 121 sets the title included in the distribution page information with the youngest order (that is, the top) among the distribution page information included in the acquired list as the title of the main page 500, The URL is displayed in the URL display text box 513, and the additional information is displayed in the additional information area 530 (S108).

  Subsequently, the initialization unit 121 sets, for each frame, a URL of distribution page information having an order that matches the frame in the distribution page information included in the acquired list (S109). That is, URLs are set in order from the youngest of the distribution page information in order from the youngest of the frames. In the script program 12, the frame is handled as an object. Accordingly, in step S109, a URL is set for a predetermined property of each frame object.

  In response to the setting of the URL for the frame, the Web browser 11 acquires (downloads) the distribution page from the Web site related to the URL set for the frame by normal HTTP communication (S110, S111). Subsequently, the Web browser 11 draws the acquired delivery page in a frame (S112). Steps S110 to S112 are executed in the background for each frame for which a URL has been set. However, only the top frame is visualized. Therefore, the displayed distribution page is only the one drawn for the top frame. Note that “executed in the background” means being executed asynchronously with the processing of the initialization unit 121.

  Thus, the process related to the initial display of the main page 500 is completed, and the Web browser 11 waits for input from the user. That is, the top delivery page is displayed in the content area 520 of the main page 500, and the additional information area 530 related to the top delivery page is displayed in the additional information area 530.

  In this state, the behavior of the main page 500 when the user clicks the next button 512 will be described. FIG. 8 is a diagram for explaining the behavior of the main page when the next button is clicked.

  In FIG. 8, (A) shows the case where the n + 3th frame is the current frame. In this case, two frames before the current frame correspond to history frames, and two frames after the current frame correspond to prefetch frames. When the next button 512 is clicked in this state, each frame shifts to the state shown in (B). That is, the current frame shifts to the history frame. Further, the (n + 4) th prefetch frame immediately after the current frame shifts to the current frame. At this time, since the distribution page is already drawn in the new current frame, it is possible to give the user a feeling as if the new distribution page was displayed in the content area 520 in an instant. When the number of prefetched frames is less than the maximum number of prefetched frames, a new prefetched frame is generated in an invisible state, and a new distribution page is drawn on the prefetched frame. In the figure, the (n + 6) th frame is generated as a prefetch frame. Further, when the number of frames in the history state exceeds the maximum number of history frames, the first history frame is discarded. Here, the term “discard” means that a frame object is discarded. The reason for discarding the frames is to reduce the memory consumption. In the figure, the (n + 1) th history frame is discarded. FIG. 8 shows an example in which the maximum number of prefetch frames and the maximum number of history frames are “2”.

  The above behavior is realized by the processing procedure shown in FIG. 9 executed by the page switching unit 122. FIG. 9 is a flowchart for explaining a processing procedure executed in response to the click of the next button.

  In response to the click of the next button 512, the page switching unit 122 makes the current frame invisible (S201). Subsequently, the page switching unit 122 visualizes the prefetch frame next to the current frame (S202). As a result, the current frame becomes a history frame, and the next frame after the current frame becomes a new current frame. As a result, the new current frame is displayed in the content area 520 in an instant.

  Subsequently, the page switching unit 122 causes the title included in the distribution page information having the new current frame order in the acquired list to be the title of the main page 500, and displays the URL in the URL display text box 513. The additional information is displayed in the additional information area 530 (S203). By updating the title of the main page 500, the URL display text box 513, and the additional information related to the distribution page of the current frame, the user can easily confirm the attribute information of the currently displayed distribution page. it can.

  Subsequently, the page switching unit 122 determines whether or not the number of elements from the distribution page information corresponding to the current position to the last distribution page information in the acquired list is less than the acquisition number (S204). The number of acquisitions is the number of acquisitions specified in the distribution page information list acquisition request in step S105 of FIG. 4, and is “20” in the present embodiment.

  If the determination result in step S204 is affirmative (Yes in S204), the page switching unit 122 provides a list of distribution page information following the end of the acquired list by information processing similar to steps S105 and S106 in FIG. Obtained from the providing server 20 (S205). Specifically, a value obtained by adding 1 to the order of the distribution page information at the end of the acquired list is set as the acquisition reference position, and “20” is specified as the acquisition number, and an acquisition request for a list of distribution page information is provided. A list of delivery page information transmitted to the server 20 and returned in response to the acquisition request is received by the page switching unit 122. The page switching unit 122 adds a list of newly acquired distribution page information following the end of the acquired list. It is theoretically possible to acquire all the distribution page information registered in the distribution page information DB 23 when the main page 500 is displayed. However, when the number of entries of distribution page information is enormous, acquiring enormous distribution page information at once via the network increases the processing load and delays the state in which the main page 500 can be operated. The possibility of being overwhelmed increases. Therefore, as in the present embodiment, it is preferable that the distribution page information is acquired gradually.

  If the determination result of step S204 is negative (No in S204), step S205 is not executed.

  Subsequently, the page switching unit 122 determines whether or not the number of prefetched frames after execution of step S202 is less than the maximum number of prefetched frames (S206). If the determination in step S206 is affirmative (Yes in S206), the page switching unit 122 generates a new frame invisible (S207). The page switching unit 122 assigns the next order (n + 6 in FIG. 8) of the last read-ahead frame to the generated frame. As a result, the generated frame becomes the last read-ahead frame in the order between frames. Subsequently, the page switching unit 122 sets, for the generated prefetch frame, the URL of the delivery page information having an order that matches the order of the prefetch frame in the delivery page information included in the acquired list. (S208). In accordance with the URL setting for the prefetch frame, the web browser 11 acquires (downloads) the distribution page from the website related to the URL set in the prefetch frame by normal HTTP communication, and the acquired distribution page Draw in the look-ahead frame. However, since the prefetch frame is invisible, the delivery page is not displayed in the content area 520.

  Steps S207 and S208 are repeatedly executed until the number of prefetched frames reaches the maximum number of prefetched frames (S206). If a large number of frames are generated at a time (in a short period of time), resources such as the CPU 104 may be insufficient. Therefore, the loop of steps S207 and S208 may be repeated with an interval of about 1 second.

  When the number of prefetched frames is greater than or equal to the maximum number of prefetched frames from the beginning, or when the number of prefetched frames reaches the maximum number of prefetched frames by executing steps S207 and S208 (No in S206), the page switching unit 122 Determines whether or not the maximum number of history frames has been exceeded (S209). If the determination in step S209 is negative, the page switching unit 122 ends the process in FIG. If the determination in step S209 is affirmative (Yes in S209), the page switching unit 122 discards the history frames in order from the top until the number of history frames reaches the maximum number of history frames (S210), and then performs the process of FIG. Terminate. However, the distribution page information of the distribution page corresponding to the discarded history frame is not deleted from the acquired list. This is because it is used when the previous button 511 is clicked, as will be described later.

  Note that the processing of FIG. 9 is performed extremely quickly with respect to human perception. This high speed is maintained even when step S208 is executed and the distribution page is downloaded and drawn for a new prefetch frame. This is because the download and drawing are executed by the Web browser 11 in the background of the process of FIG. 9 (that is, asynchronously with the process of FIG. 9). The interval between the loops of steps S207 and S208 can also be realized in the background. For example, when JavaScript (registered trademark) is used as the script program 12, if a function for executing steps S207 and S208 is specified in the first argument of setInterval, which is a standard function of JavaScript (registered trademark), Steps S207 and S208 can be repeatedly executed in the background at a predetermined interval (for example, about 1 second).

  Therefore, the user can continuously click the next button 512. The distribution page to be displayed next is already drawn in the next prefetch frame. As a result, it is possible to give the user an operational feeling that the distribution pages to be displayed in the content area 520 change one after another at high speed.

  Next, the behavior of the main page 500 when the user clicks the previous button 511 will be described. FIG. 10 is a diagram for explaining the behavior of the main page when the previous button is clicked.

  In FIG. 8, (A) shows the case where the n + 3th frame is the current frame. In this case, two frames before the current frame correspond to history frames, and two frames after the current frame correspond to prefetch frames. When the previous button 511 is clicked in this state, each frame shifts to the state shown in (B). That is, the current frame shifts to the prefetch frame. In addition, the history frame immediately before the current frame (n + 2) shifts to the current frame. At this time, since the delivery page is already drawn in the new current frame, the user can feel as if the previous delivery page was displayed in the content area 520 in an instant.

  The above behavior is realized by the processing procedure shown in FIG. 11 executed by the page switching unit 122. FIG. 11 is a flowchart for explaining a processing procedure executed in response to clicking the previous button.

  In response to the click of the previous button 511, the page switching unit 122 determines whether or not the order given to the current frame is “1”, that is, the order of the distribution pages drawn in the current frame is “1”. It is determined whether or not (S301). When the order of the current frame is “1” (Yes in S301), there is no delivery page before the delivery page of the current frame, and thus the page switching unit 122 ends the process of FIG. When the frame with the order “1” becomes the current frame, the forward button 511 may be grayed out (inoperable). In that case, the check in step S301 is not necessary.

  When the current frame order is not “1” (No in S301), the page switching unit 122 determines whether or not there is a history frame (S302). Specifically, it is determined whether or not there is a frame assigned a lower order than the current frame. When the history frame exists (Yes in S302), the page switching unit 122 makes the current frame invisible (S303). Subsequently, the page switching unit 122 visualizes the history frame immediately before the current frame (S304). As a result, the current frame becomes a prefetch frame, and the history frame immediately before the current frame becomes a new current frame. As a result, the new current frame is displayed in the content area 520 in an instant.

  Subsequently, the page switching unit 122 causes the title included in the distribution page information having the new current frame order in the acquired list to be the title of the main page 500, and displays the URL in the URL display text box 513. The additional information is displayed in the additional information area 530 (S305).

  On the other hand, when there is no history frame (No in S302), the page switching unit 122 generates a new frame invisible (S306). The page switching unit 122 gives the order before the current frame to the generated frame. As a result, the generated frame becomes the first history frame in the order between frames. Subsequently, the page switching unit 122 sets, for the generated history frame, the URL of the delivery page information having an order that matches the order of the history frame in the delivery page information included in the acquired list. (S307). In accordance with the URL setting for the prefetch frame, the Web browser 11 acquires (downloads) the distribution page from the Web site related to the URL set in the history frame by normal HTTP communication, and the acquired distribution page Draw in the look-ahead frame. However, since the prefetch frame is invisible, the delivery page is not displayed in the content area 520. Further, the download and drawing are executed in the background.

  Subsequently, the page switching unit 122 determines whether or not the number of prefetched frames exceeds the maximum number of prefetched frames (S308). If the determination in step S308 is affirmative (Yes in S308), the page switching unit 122 discards the prefetch frames in order from the tail until the number of prefetch frames reaches the prefetch frame maximum number (S309).

  If the determination in step S308 is negative (No in S308), or after completion of discarding the prefetched frame, the page switching unit 122 executes steps S303 to S305 described above. As a result, the history frame generated in step S306 becomes the current frame, and the distribution page drawn for the new current frame is displayed in the content area 520.

  As is clear from FIG. 11, in the present embodiment, when the previous button 511 is clicked, the generation of the history frame and the discard of the last prefetched frame are not executed every time. That is, the history frame is regenerated or the like when the previous button 511 is continuously clicked and there are no more history frames. As a result, the processing when there is a history page is simplified. This is because, as a usage form of the main page 500, it is considered that the possibility that the previous button 511 is continuously clicked is low.

  In FIG. 9 or FIG. 11, an example has been described in which the frame is generated and other frames are discarded when a new prefetch frame or history frame is necessary. However, an existing frame may be reused. That is, the frame to be discarded in the present embodiment may be reused as the frame to be generated. In this way, securing of a newly required frame may be performed by new generation or may be performed by reusing an existing frame.

  In addition, the history frame number check (S209 in FIG. 9) or the prefetch frame number check (S308 in FIG. 11) is not performed every time the next button 512 or the previous button 511 is clicked. May be performed once.

  In the above description, the example in which the display target is changed in order for each page has been described. However, jumping to a specific page may be possible. In this case, buttons corresponding to a predetermined number of distribution pages may be displayed in order on the operation panel 510. The range of the delivery page on which the button is displayed may be limited to the delivery page drawn in the history frame, the current frame, or the look-ahead frame, or the delivery page may be displayed for the range drawn in the frame. You may further expand in the front-back direction of the order. In order to make it easy to visually recognize the correspondence between each button and the delivery page, each button may display at least one of the title of the corresponding delivery page and a thumbnail image. The thumbnail image may be generated in advance on the information providing server 20 side and included as part of the distribution page information.

  If any button is clicked, if the button relates to a delivery page after the delivery page (current page) drawn in the current frame, the page switching unit 122 performs the processing described in FIG. Execute. However, what is visualized in step S202 (that is, a new current frame) is a frame in which a delivery page corresponding to the selected button is drawn.

  On the other hand, if the clicked button relates to the delivery page before the current page, the page switching unit 122 executes the processing described in FIG. However, what is visualized in step S304 is a frame in which a delivery page corresponding to the selected button is drawn.

  Note that thumbnail images corresponding to distribution pages that have already been browsed may be displayed in color, and thumbnail images corresponding to distribution pages that have not been browsed may be displayed in gray (black and white display).

  By the way, immediately after the main page 500 is displayed on the Web browser 11 and the distribution page is displayed in the current frame for the first time (immediately after step S112), downloading and drawing to the distribution page to other prefetch frames are completed. There is no possibility. Therefore, even if the user clicks the next button 512 in this state, it is difficult to realize the high-speed page switching that the main page 500 aims at. Therefore, the following device may be used.

  Usually, an upper limit is set for the number of connections (number of sockets) that the Web browser 11 can open simultaneously. For this reason, if many distribution pages are downloaded simultaneously, the number of connections available for downloading per page is reduced. In order to avoid this, immediately after the main page 500 is displayed, the number of frames to be generated is reduced compared to the normal time so that the download of the distribution page is completed at a higher speed. Specifically, a predetermined number of frames smaller than the maximum number of frames to be finally generated (maximum number of prefetch frames + maximum number of history frames + 1) is generated in step S107. Thereafter, for example, the number of frames is gradually increased according to the user's operation. By doing so, the discomfort given to the user can be reduced. This embodiment also employs such a method. That is, first, (the maximum number of prefetched frames + 1) frames are generated. Thereafter, when the number of prefetch frames falls below the maximum number of prefetch frames in response to the click of the next button 512 (Yes in S206), the prefetch frames are added (S208).

  Further, immediately after the main page 500 is displayed, a delivery page that is likely to be drawn at a relatively high speed may be preferentially downloaded. This is realized by the information providing server 20 returning a list of distribution page information corresponding to the distribution page in response to an initial distribution page information list acquisition request. For example, for a predetermined number of records from the beginning of the delivery page information DB 23, delivery page information corresponding to such a delivery page may be registered.

  Delivery pages that do not take time to draw are determined based on the size of the HTML source, the number of images embedded in the HTML source, the number and size of external objects such as CSS (Cascading Style Sheets), or JavaScript (registered trademark). do it. Alternatively, the information providing server 20 may measure the drawing speed of the distribution page in advance and make a determination based on the measurement time.

Further, in the present embodiment, an example in which the arrangement position of the frame is shifted with respect to the invisibility of the frame has been described. However, the frame invisibility method is not limited to this. For example, the invisibility of the frame may be realized by manipulating the property of the frame (frame object) as follows.
(1) Set “hidden” in the visibility property (set “visible” for visualization).
(2) Set “none” in the display property (set “block” for visualization).
(3) Set 0 in the property property for designating transparency (set to 100 for visualization).
(4) Set 0 to the width and height properties for designating the display size (set the original value when visualizing).
(5) The z-index property for designating the overlapping order is set to maximize the value of the current frame.

  Note that the method of shifting the arrangement position adopted in the present embodiment is based on viewpoints such as switching speed, compatibility between Web browsers, and stability of behavior in comparison with the methods described in (1) to (5) above. Has the advantage of the best balance. However, the invisibility may be realized by another method or a property operation based on a new specification in accordance with future changes in the implementation of the Web browser.

  In the present embodiment, the example in which the content area 520 is always occupied by one frame has been described. However, two or more frames may be arranged side by side (so as not to overlap) in the content area 520 so that a plurality of distribution pages can be browsed simultaneously. That is, the content area 520 may be divided by a plurality of frames. In this case, the behavior in response to the click of the next button 512 or the previous button 511 may shift the frame to be visualized by one or may replace all the frames to be visualized.

  As described above, according to the main page 500 in the present embodiment, the distribution page registered in the distribution page information DB 23 can be browsed without causing the user to input a keyword or the like. Therefore, the user can browse a Web page that does not depend on the user's purpose, and the user can passively use the Internet. As a result, it is possible to create an accidental encounter with unknown information that the user does not expect.

  However, if the Web pages registered in the delivery page information DB 23 are simply displayed in order, it is not practical. Practicality here is recognized as being convenient for the user, and means acquiring a large number of users and spreading among a large number of users. For example, as with the search results of search sites that are commonly found in the past, simply displaying a list of links to distribution pages on the main page 500 provides the user with a feeling of being passive. I can't do it. In the end, the user needs to make a decision as to which of the links to view.

  Therefore, the main page 500 according to the present embodiment causes the Web browser 11 to download and draw a predetermined number of distribution pages in advance, and holds the drawn page even if it is not a display target. . Therefore, page switching can be realized at a very high speed in accordance with a user operation (such as an operation on the next button 512 or the previous button 511). Due to this high speed, the user can zapping the distribution pages one after another as if switching the TV channel, and what is interesting or popular is fast (to the user's thinking speed). At an adapted speed). That is, by switching pages at high speed, it is possible to provide the user with an environment where the distribution page can be browsed somehow in a situation where there is no particular purpose. As a result, the possibility of ensuring the utility of the main page 500 can be significantly improved.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to such specific embodiment, In the range of the summary of this invention described in the claim, various deformation | transformation・ Change is possible.

DESCRIPTION OF SYMBOLS 1 Web page display system 10 User terminal 11 Web browser 12 Script program 20 Information provision server 21 Main page provision part 22 Distribution page list provision part 23 Distribution page information DB
100 drive device 101 recording medium 102 auxiliary storage device 103 memory device 104 CPU
105 interface device 106 display device 107 input device 121 initialization unit 122 page switching unit 500 main page B bus

Claims (19)

A web page display program included in a predetermined web page,
To the computer on which the predetermined web page has been downloaded,
A list of URLs is acquired from an external device, a display component that displays a Web page corresponding to the URL for each of two or more URLs included in the acquired URL list is generated for the predetermined Web page, For each display component, the Web browser is caused to execute acquisition of a Web page from a corresponding URL and drawing of the acquired Web page so that a part of the display component is visualized, and the display components other than the part are not displayed. Initialization procedure to visualize,
In response to an input of a display target switching instruction for the predetermined Web page, at least a part of the display parts that have been made invisible by making part or all of the display parts that have been made visible become invisible Web page display program for executing a switching procedure for visualizing the display component. Each of the display components is given a display order,
The Web page display program according to claim 1, wherein the switching procedure determines the display component to be visualized based on the display order in response to an input of the switching instruction.   The switching procedure secures the display component corresponding to at least one URL of URLs from which Web pages are not acquired from the list of acquired URLs according to the visualization or invisibility of the display components, The Web page display program according to claim 1 or 2, which causes the Web browser to execute acquisition of a Web page from a URL corresponding to a display component and drawing of the acquired Web page. The initialization procedure acquires a part of a list of URLs stored in the external device,
The Web page display program according to any one of claims 1 to 3, wherein the switching procedure acquires a list of URLs other than the part from the external device in accordance with the visualization or invisibility of the display component.   5. The Web page according to claim 4, wherein the initialization procedure acquires a list of URLs of Web pages that are likely to be drawn at a relatively high speed with respect to the Web page acquired in the switching procedure from the external device. Display program.   The display component is made invisible by arranging an area of the display component outside the area of the main page, and visualized by arranging an area of the display component in the area of the main page. The Web page display program according to any one of 1 to 5. A web page display method executed by a computer having a web browser,
An acquisition procedure in which the Web browser acquires a predetermined Web page;
A list of URLs is acquired from an external device, a display component that displays a Web page corresponding to the URL for each of two or more URLs included in the acquired URL list is generated for the predetermined Web page, For each display component, the Web browser is caused to execute acquisition of a Web page from a corresponding URL and drawing of the acquired Web page so that a part of the display component is visualized, and the display components other than the part are not displayed. Initialization procedure to visualize,
In response to an input of a display target switching instruction for the predetermined Web page, at least a part of the display parts that have been made invisible by making part or all of the display parts that have been made visible become invisible Web page display method comprising: a switching procedure for visualizing the display component. Each of the display components is given a display order,
The Web page display method according to claim 7, wherein the switching procedure determines the display component to be visualized based on the display order in response to an input of the switching instruction.   The switching procedure secures the display component corresponding to at least one URL of URLs from which Web pages are not acquired from the list of acquired URLs according to the visualization or invisibility of the display components, The Web page display method according to claim 7 or 8, wherein the Web browser executes execution of acquisition of a Web page from a URL corresponding to a display component and drawing of the acquired Web page. The initialization procedure acquires a part of a list of URLs stored in the external device,
10. The Web page display method according to claim 7, wherein, in the switching procedure, a list of URLs other than the part is acquired from the external device according to visualization or invisibility of the display component.   The Web page according to claim 10, wherein the initialization procedure acquires a list of URLs of Web pages that are highly likely to be rendered relatively quickly with respect to the Web page acquired in the switching procedure from the external device. Display method.   The display component is made invisible by arranging an area of the display component outside the area of the main page, and visualized by arranging an area of the display component in the area of the main page. The web page display method according to any one of 7 to 11. Web page display means for acquiring and displaying a predetermined Web page;
A list of URLs is acquired from an external device, a display component that displays a Web page corresponding to the URL for each of two or more URLs included in the acquired URL list is generated for the predetermined Web page, For each display component, the Web browser is caused to execute acquisition of a Web page from a corresponding URL and drawing of the acquired Web page so that a part of the display component is visualized, and the display components other than the part are not displayed. Initialization means for visualizing; and
In response to an input of a display target switching instruction for the predetermined Web page, at least a part of the display parts that have been made invisible by making part or all of the display parts that have been made visible become invisible Web page display device having switching means for visualizing the display component. Each of the display components is given a display order,
The Web page display device according to claim 13, wherein the switching unit determines the display component to be visualized based on the display order in response to an input of the switching instruction.   The switching means secures the display component corresponding to at least one URL of URLs from which Web pages are not acquired from the list of acquired URLs according to the visualization or invisibility of the display components, The web page display apparatus according to claim 13 or 14, wherein the web browser executes execution of acquisition of a web page from a URL corresponding to a display component and drawing of the acquired web page. The initialization unit acquires a part of a list of URLs stored in the external device,
The Web page display device according to any one of claims 13 to 15, wherein the switching unit acquires a list of URLs other than the part from the external device in accordance with visualization or invisibility of the display component.   The web page according to claim 16, wherein the initialization unit obtains a list of URLs of web pages that are likely to be rendered at a relatively high speed with respect to the web page obtained by the switching unit from the external device. Display device.   The display component is made invisible by arranging an area of the display component outside the area of the main page, and visualized by arranging an area of the display component in the area of the main page. The web page display device according to any one of 13 to 17. A web page display system having a web page display device and an external device,
The web page display device
Web page display means for acquiring and displaying a predetermined Web page;
A list of URLs is acquired from an external device, a display component that displays a Web page corresponding to the URL for each of two or more URLs included in the acquired URL list is generated for the predetermined Web page, For each display component, the Web browser is caused to execute acquisition of a Web page from a corresponding URL and drawing of the acquired Web page so that a part of the display component is visualized, and the display components other than the part are not displayed. Initialization means for visualizing; and
In response to an input of a display target switching instruction for the predetermined Web page, at least a part of the display parts that have been made invisible by making part or all of the display parts that have been made visible become invisible Web page display system having switching means for visualizing the display component.

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