JP2001229106A - Contents conversion system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that requested contents which exceed the limit of reception capacity can not be serviced to a portable terminal side by Web service to a portable terminal has a limit of single-time reception capacity. SOLUTION: An original content acquisition agent means, a content division condition acquiring means, a content dividing means, a means which generates a link between subcontents as the divided contents, a storage means for the subcontents, and a sending-back means for the subcontents are provided between the portable terminal and a Web server.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an HTTP (HyperText) provided by a World Wide Web (abbreviated as Web) server.
The present invention relates to a device that mediates access to various Web servers in response to a request from a client in accordance with an access procedure based on a Transfer Protocol.

In particular, the present invention relates to a Web access mediation device that divides a page of an original content into a content composed of a plurality of subpages (referred to as subcontent) in response to a Web access request from a portable terminal and provides the content.

[0003]

2. Description of the Related Art As a service for a terminal having a limited display capability, a method of filtering an image included in a content and a method of reducing an image in the content by a relay server are known. As a service for a similar portable information terminal, a method of converting a link pointer indicated by an image in content into a link pointer indicated by text is disclosed in Japanese Patent Application Laid-Open No. H11-191022.

[0004]

The image information in the content provided by the Web server is described only as layout information on the page to be downloaded first, and does not include the information itself. Therefore, the terminal analyzes the page downloaded first, and then downloads the image information. For this reason, the above-described conventional technology has a problem that it cannot be applied when the page information to be downloaded first is larger than the capacity of the terminal or the capacity of the network.

[0005] Therefore, an object of the present invention is to provide a terminal with a service for dividing a page of content to be downloaded first into a plurality of sub-contents according to the conditions of the terminal and the network in order to solve the above-mentioned problems. .

[0006]

The contents conversion system of the present invention comprises the following means. A proxy acquisition unit for the original content, a unit for dividing the original content into a plurality of sub-contents, creating link information between the sub-contents, a unit for providing the sub-contents to the terminal, and a unit for acquiring a condition for dividing the sub-contents This solves the above problem.

[0007] That is, in the content conversion system that has received a content access request from the terminal, the content requested by the terminal is acquired by the proxy acquisition means for the original content. Next, the means for acquiring the decomposition condition into sub-contents obtains a method for creating sub-contents according to the terminal or network. In accordance with this, the original content is divided into a plurality of sub-contents, and means for creating link information between the sub-contents divides the original content into sub-contents, and by adding link information between the sub-contents, Complete the sub-content. Then, the means for providing the sub-contents to the terminal returns a certain sub-content.

[0008] Since the terminal can download the sub-content, the user refers to it.

[0009] For other sub-contents, link information to the sub-contents is presented to the user, and the user makes a request to the sub-contents if necessary. Then, since the means for providing the sub-contents to the terminal provides the other sub-contents to the terminal, the user can refer to the content equivalent to the original content a plurality of times.

[0010] Thus, the problem is solved.

[0011]

FIG. 2 shows a Web service broker 101 for processing contents as an embodiment of the present invention.
Downloads contents from various Web servers 102 to mobile terminal 1
FIG. 1 is a configuration diagram of a content service system provided to a content service system 00. Here, the mobile terminal 100 is a lightweight terminal in which a small display device and a button input device are integrated, and has a wireless communication function. This wireless communication function connects to the public wireless network 200, and makes various requests to the Web server 102 and receives various services as responses.

A request from portable terminal 100 is transmitted to wireless base station center 201 via public wireless network 200.
Wireless base station center 201 and Web service broker 10
Reference numeral 1 denotes a configuration which is connected via a dedicated line 203 and further connected to various Web servers 102 via the Internet 202. A request from the portable terminal 100 is finally transmitted to the Web server 102 via these devices, and a response is returned to the portable terminal 100. Internet 2
02, the P receiving the service from the Web server 102
C103 is also connected. The service provided by the Web server 102 is created for the PC 103, and the mobile terminal 1
It is not created in consideration of the restriction of the reception capacity of 00. Unlike the PC 103, the mobile terminal 100 has a stricter reception capacity due to its storage capacity and the network capacity of 200 and 203.

FIG. 3 is a diagram showing a hardware configuration of the Web service broker 101. As shown in FIG.

An information processing computer which is interconnected by a CPU 300, a RAM 301, a ROM 302, and a CPU bus 310 and performs arbitration by a bus control circuit 303. The bus 310 has a keyboard control (KBC) 307 and a display control device (DPC ) 308 and various input / output control devices such as a communication port control 311 are connected. An external storage device such as a hard disk (HD) 304, a CD-ROM 305, or a floppy disk (FD) 306 is connected to the bus control 303. From the communication port control 311, the radio base station center 201
And a line 322 to the Internet.

FIG. 1 shows the functional structure of a Web service broker 101, which is the center of this embodiment, and the flow of a service request and its response. User 10
The service provided by the Web server 102 using the mobile terminal 100 is received via the Web service broker 101. Therefore, first, the user 10 makes a request for a service to be received by giving an instruction to a Web browser 110 which is software for presenting Web content that operates on the mobile terminal 100. The service provided by the web server 102 is HTM
Content information described in L (Hyper Text Markup Langauge). This content information is stored in the URL (Universal
Resource Locater). In response to an instruction from the user 10, the Web browser 110 transmits a request including the corresponding URL to the Web service broker 101. The description of each functional unit will be given together with the flow of the main processing of the Web service broker 101 shown in FIG.

First, a Web request from the portable terminal 100 is received (step 1002). Next, the original content acting acquisition unit 150 extracts the URL in the Web request, establishes a communication connection with the corresponding Web server 102, sends a request to the Web server 102, and describes the request in HTML as a response. The original content is received and temporarily stored (step 1004). next,
The content division condition obtaining unit 160 obtains a division condition of the temporarily stored original content (step 1006). Here, the upper limit of the capacity of the mobile terminal 100 is obtained.

Next, the content dividing section 130 divides the original content into a plurality of sub-contents (step 1008).

Next, an inter-sub-content link creating unit 140
Attaches a URL to each sub-content and adds link information between the sub-contents indicated by the URL (step 10).
10).

Next, the sub-contents management section 170 manages the correspondence information between the sub-contents and the URL (step 1012).

Next, sub-content transmitting section 120 returns one sub-content to portable terminal 100 (step 1014).

After that, the user 10 receives the presentation of the sub-content sent from the Web service broker 101. Then, if necessary, the required sub-content is requested from the link information to another sub-content added to the sub-content. The request for the sub-content is received by the sub-content returning unit 120, and the corresponding sub-content is returned to the mobile terminal 100.

Next, the processing of the content division section 130 will be described in more detail with reference to the drawings.

FIG. 8 is a diagram showing an example of an original content to be divided.

In the original content 2000, the number of table elements constituting one table is so large that the capacity limit is reached. The HTML table is specified by the TABLE tag. Among them, the TH tag indicates a table header, and the TD tag indicates a table element. In this example, the table element indicated by the TD tag is 999x
There are 999. The rows of the table are separated by TR tags.

FIGS. 9 to 12 show original contents 2
000 division result. Sub-contents 2001
HT with rows from 1 to 499 and columns from 1 to 500
ML content. The sub content 2002 is 50
H consisting of rows from 0 to 999 and columns from 1 to 500
TML content. The sub content 2003 is an HTM consisting of rows from 1 to 499 and columns from 501 to 999.
L content. The sub content 2004 is 50
The HTML content includes a row from 0 to 999 and a column from 501 to 999.

Here, the TIT on the third line of each sub-content
The page number enclosed in "()" is added to LE. Further, after 510 lines and 511 lines, link information to each sub-content is added. This link information is described by an A tag, and the URL of the sub-content is described in the href attribute value. Here, the comment sentence on the sixth line is filtered.

FIG. 6 is a diagram showing a link relationship between sub-contents. In this example, it is shown that there is a link from each sub-content to all other sub-contents.

Thus, the user 10 can call an arbitrary sub-content such as referring to the sub-content 2004 after the sub-content 2001.

FIG. 13 is a diagram showing a processing flow of a table dividing process performed by the content dividing section 130 and the sub-content creating section 140.

First, the division condition generated by the content division condition acquisition unit 160 is referred to (step 1502). Next, the size of the original content 2000 is checked, and whether or not the size upper limit has been reached is checked (step 1504). If the upper limit of the size has been reached, a process for determining a division location is executed. Therefore, HT
Parse the ML document and find the last tag break that appeared before the size limit was reached. Here, the tag break is immediately before the start tag of each tag (step 1506).

Next, it is checked whether the provisional division point is included in the tag. Here, it is determined whether there is no TABLE tag as a tag (step 150).
8). If it does not belong to the contents of the specific tag, the division is simply performed (step 1540). If the provisional division point is within the table, the table size is obtained by dividing the table size by the size upper limit (step 1510). Next, the table division method, vertical division, horizontal division, or vertical / horizontal division is determined, and the row and column ranges of the table elements constituting each sub-table are determined according to the table division method. By the way, if the number of divisions is odd and vertical / horizontal division, set the number of divisions to 1
The division is performed with the increased value (step 1512).
The above is the processing of the content division unit 130. Next, link information to each sub-content is added (step 1514). Then, sub-contents are completed by adding a HEAD part and a BODY tag (step 1516).

FIG. 5 shows a sub-contents management table 500 referred to by the sub-contents management section 170.

The table 500 stores the correspondence between the URL of the original content, the URL name given to the sub-content, and the recording file name of the sub-content. Here, the common part between the file name and the URL name of the sub-content is managed as the URL name of the sub-content, and the different path parts are separately managed as the sub-content URL path name and the sub-content storage path name.

FIG. 7 is a flowchart showing step 1540 in FIG.
FIG. 4 is a diagram for explaining the division processing of FIG.

First, a line feed is performed retroactively from the temporary division point.
It is checked whether there is a BR tag or an H tag as a heading (step 1702). If not, the tag is divided before and after the break of the tag, which is the temporary division point (step 170).
4). If there is, split it back and forth there (step 170
6). This processing makes it easier to see the sub-content at the time of division.

FIG. 23 shows the addition processing of the inter-sub-contents link creation unit 140. FIG. 22 illustrates this processing. In this processing, the original content 3000 has a jump in a page where the URL of the href attribute value of the A tag starts with “#”, and the jump destination is divided into different sub-contents, here, the sub-content 3001 and the sub-content 3002. It is when it becomes. First, it is checked whether or not the divided sub-contents include a jump within a page. Also, it is checked whether the jump destination is within the sub-content (step 1802). Since this jump destination is indicated by the name attribute value of the A tag, it is checked whether or not this jump destination is included in each sub-content. If a different sub-content has a jump destination, the href attribute value of '#' Rewriting is performed by adding the URL of the sub-content at the jump destination (URL of 3002 in FIG. 23 is... Sub (2) .html) (step 1804).

FIGS. 14 and 15 show a flow of processing when the original content is a frame page and a related diagram, respectively.

In the frame page 6000, the frame definition information and the URL of the content in the frame are described by the FRAME tag.

In FIG. 15, the frame page 6000 describes the frame link information to the frame contents 1 6010 and 2 6020. By the processing described below, the frame page 60
00 is rewritten to a page 6001 including link information to the frame content 16010 and the sub-contents 6021 and 6022 of the frame content 2.

First, it is checked whether the original content is a frame page (step 1102). If not a frame page, end. For frame pages,
Replace FRAME src with A href (step 110)
4). Then, each frame content is further downloaded, and its size is checked to determine whether or not division is necessary (step 1106). If the content needs to be divided, the content is divided into sub-contents (step 1108). Finally, the link information of the original content divided from the frame page is deleted, and link information to the divided sub-contents is added (step 1110).

Here, the processing of the content division condition acquisition section 160 will be described in detail.

If it is not necessary to dynamically acquire the division condition, the conversion condition table 700 shown in FIG. 18 need only be fixedly held. By the way, conversion condition table 7
In 00, the allowable upper limit size is described in byte units, and on / off information of each filter of comments, scripts, images, and objects, and one of vertical, horizontal, and vertical and horizontal is described as a table dividing method.

In such a case, a plurality of Web service brokers 101 having different division conditions are prepared, and the portable terminal 100 selects an appropriate Web service broker 101. FIG. 16 shows a flow of a selection process of the Web service broker 101 according to the division condition in the Web browser 110 and information to be referred to.

First, a URL request is received from the user 10 (step 1902). Next, the address of the Web service broker 101 is obtained from the correspondence information between the division condition and the address stored in the table 600. Then, a communication connection is established with the Web service broker 101 specified by the address (step 1904). Next, a request including the URL is sent (step 1906). Then, the result is received (step 1908). Note that the division condition serving as a key may be held unique to the terminal, or may be given by the user 10.

The above is a description of a plurality of Web service brokers 1
Although the example of the system in which 01 is present is described, an example in which one Web service broker 101 handles this will be described.

At this time, as shown in FIG. 17, a correspondence method between the division condition 900 and the URL 910 at that time is stored, and a URL request corresponding to the condition is created. For example, the allowable size is 1KByte and the table division method is "vertical"
Then, a path is added to the division condition of 1K-A, and then the URL of the content requested by the user 10 is described. Upon receiving this, the Web service broker 101 separates the content URL and the division condition.

In the above example, the terminal sends a URL request including the division condition. After the portable terminal 100 sends the URL request, the Web service blow 101 returns a page for allowing the user 10 to input the division condition. Then, the content may be returned to the URL specified. FIG.
This is a sample of a page 16000 for allowing the user to input a division condition, and allows the user to input information registered in the division condition table 700.

In the above-described embodiment, the logic does not consider the decrease in the size of the content returned by the filter. In the case where the Web service broker 101 has a filter function, a description will be given of a division process that takes into account that the content size is reduced by the filter.

FIG. 20 shows the processing flow. First, a filter is performed before division (step 1).
302). Next, the number of divisions is obtained by dividing the size after filtering by the upper limit size (step 1304).

Finally, content division condition acquisition section 160
The additional functions of are described. In the above embodiment, the user
Here is an example where the Web service broker automatically solves the problem, although it was a method to specify the division condition in 10. FIG. 21 shows a division condition solution table 800 to be referred to at the time of this automatic division condition solution. The table 800 stores correspondence information between URLs and division condition tables 700a, b, and c.
Thereby, the corresponding division condition is found by searching table 800 according to the URL requested from portable terminal 100. The information in this table 800 is
It is set by the administrator of the service broker 101.

[0051]

As described above, in a Web service to a portable terminal having a limited receiving capacity at one time, even if the size of the original content exceeds the receiving capacity, the original content is divided into parts to be used as a Web service to the portable terminal a plurality of times. It has the effect that it can be provided.

In addition, since a headline or a line feed is adopted as a delimiter of the original content, the relation of the contents between the sub-contents can be made sparse, so that the user can easily understand the contents of the sub-contents. is there.

Even when information blocked by a table or a list is divided into sub-contents,
Since the link information between the respective sub-contents is provided, there is also an effect that the user can know the information which is integrated by integrating the respective sub-contents into blocks by following the link.

Furthermore, when the information described in the sub-contents does not require the information after a certain sub-content, unless the request is made, the information is not downloaded to the terminal side, so that the communication cost for useless information can be reduced. There is also.

When the content linked from the content, such as a frame page, satisfies the condition of dividing into sub-contents, the link information to the sub-content is provided, so that the content to be accessed is divided into sub-contents. It also has the effect of knowing in advance whether or not it is.

Further, since the conditions for creating sub-contents, such as a divided table layout for the original content, can be individually designated and stored, there is an effect that an appropriate sub-content can be created according to the content.

[Brief description of the drawings]

FIG. 1 is an embodiment using a Web service broker 101, and shows functional blocks and data flows.

FIG. 2 is a diagram showing an example of a system configuration of the present invention.

FIG. 3 is a hardware configuration diagram of a Web service broker 101.

FIG. 4 is a flowchart of a main process of the Web service broker 101.

FIG. 5 is a diagram showing a sub content management table.

FIG. 6 is a diagram illustrating the relationship between sub-contents.

FIG. 7 is a flowchart of an adding process to the dividing process.

FIG. 8 is a diagram showing an example of an original content.

FIG. 9 is a diagram illustrating an example of sub-contents created by a division process.

FIG. 10 is a diagram showing an example of sub-contents created by a division process.

FIG. 11 is a diagram showing an example of sub-contents created by a division process.

FIG. 12 is a diagram showing an example of sub-contents created by a division process.

FIG. 13 is a flowchart of a table dividing process.

FIG. 14 is a flowchart of a frame page rewriting process.

FIG. 15 is a diagram showing a result of a frame page rewriting process.

FIG. 16 is a diagram showing a flowchart of the Web browser 110 and an address resolution table 1300.

FIG. 17 is a diagram showing a correspondence between a division condition and a URL format at that time.

FIG. 18 is a diagram showing a division condition table 700.

FIG. 19 is a diagram showing a division condition input page.

FIG. 20 is a flowchart of a division process considering a filter.

FIG. 21 is a diagram showing a division condition solution table 800.

FIG. 22 is a diagram showing a result of an intra-page jump process.

FIG. 23 is a flowchart of an in-page jump process.

[Explanation of symbols]

 120: Web proxy, 101: Web access server.

Claims (13)

[Claims] In a system for processing content on a Web server and providing the processed content to a terminal, when the content requested by the terminal reaches an upper limit of the size of the terminal, the content is divided into sub-contents including a plurality of parts. Linking the plurality of sub-contents, returning one of the plurality of sub-contents, storing the other sub-contents, and storing the sub-contents in response to a request for the sub-contents from a terminal. A content conversion system having a function of returning a corresponding sub-content from the sub-contents. 2. A content conversion system according to claim 1, wherein the content is divided into a plurality of sub-contents with a heading in the content as a delimiter. 3. The content conversion system according to claim 1, wherein the content is divided into a plurality of sub-contents according to claim 1, using a line feed in the content as a delimiter. 4. The contents conversion system according to claim 1, wherein a table in the contents is divided into a plurality of sub-tables, and the plurality of sub-contents including the sub-tables are created. 5. The content conversion system according to claim 1, wherein a subpage number is assigned to each of the subcontents, and link information corresponding to the subpage is added to each of the subcontents. 6. The method according to claim 1, wherein when a jump to the content is specified, the jump in the corresponding sub-content is changed to link information to the sub-content of the jump destination. Content conversion system. 7. When the content according to claim 1 is a frame page, analyzing the frame content constituting the content, and if the frame content has reached the upper limit of the size of the terminal, the frame content is converted to sub content. A content conversion system, wherein the content is divided and the frame page is returned with link information to the sub-content after division. 8. The content conversion system according to claim 1, further comprising: means for holding a correspondence between the address of the dividing means for sub-contents and the dividing condition, wherein the terminal sends the address to the dividing means for dividing the dividing condition into sub-contents. And transmitting a content request to the address. 9. The content conversion system according to claim 1, wherein sub-content creation conditions are set in the URL of the request sent by the terminal. 10. The content conversion system according to claim 1, wherein after the terminal transmits the request for the content,
A content conversion system, wherein an input page of a sub-content creation condition is returned to a terminal, and the input page is presented to a user of the terminal. 11. The content conversion system according to claim 1, wherein, when inputting the sub-content creation condition at the terminal, a filter condition for the content is also input. 12. The content conversion system according to claim 1, wherein the number of sub-contents is reduced by dividing the content into sub-contents after filtering the content. 13. A URL which has correspondence information between a content URL and a sub-content creation condition, and is requested by a terminal.
2. The content conversion system according to claim 1, wherein a sub-content creation condition is obtained based on the content, and the content is divided into sub-contents in a different manner for each content according to the creation condition.