JPH10207759A - Device for automatically obtaining hyper text - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a page valid to a user in the small number of cache areas. SOLUTION: A top file and an access condition including the maximum depth level are stored so as to be made correspond to each other in a top file list storage part 1. A network interface part 3 issues a file capturing request to a server 4 according to a request from a cyclic control part 5, and stores received file data in a file cache memory 2, and returns it to the cyclic control part 5. An analyzing part 6 analyzes the file data, and extracts a relevant file name. The cyclic control part 5 calculates the depth level of the relevant file from the analyzing part 6, and stores it so as to be made correspond to the relevant file name in a cyclic list storage part 7, and requests the capture of the file data, and monitors access to a network so as not to be beyond the access condition including the maximum depth level. Thus, the necessary file can be automatically obtained by flexibly limiting an access range according to a cache area.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a WWW (World)
The present invention relates to an automatic hypertext acquisition apparatus that acquires hypertext data such as Wide Web from a server via a network.

[0002]

2. Description of the Related Art Conventionally, as a data acquisition system, there is a center system which responds to a request from a center in a command format. In the center method, various command requests sent from the center and commands to be transmitted (executed) in response to the command requests are stored in the client device in advance. By doing this, the desired command is sent automatically,
You can get the data you want. Such a center system is implemented in personal computer communication terminal software or the like.

[0003] Separately, when acquiring hypertext data such as WWW distributed on a network irrespective of the physical location, no particular request is issued from the server to the client device. Therefore, it is necessary to actively make necessary requests from the client device. In this case, the client device is equipped with a user interface tool “Prowser”. Then, when a target server name and a file name on the network are designated, the browser automatically acquires the designated file and other files constituting a page mainly including the file, and visually displays the designated file. The page is displayed in combination.

[0004] Here, when a page whose main is the specified file is related to another page, a link from one page to the related page is required in order to move between related pages and display them. (The link "an shown in FIG. 9
chor ”etc.) must be designated by the user one by one and displayed in order. The files to be handled are scattered everywhere in the network. Therefore, when acquiring hypertext data such as the WWW, it takes a considerable time from when the request is actually issued until the display of all the acquired pages is completed. However,
The communication in this case uses a telephone line, so that the unit cost required for the communication is large. Therefore, a function of ending the acquisition / display of all pages related to the specified file in a short time is desired.

Therefore, there is an automatic patrol function as a function satisfying such a demand. In the client device having the automatic patrol function, the data of the page where the acquired specified file exists (the specified page) and the data of the related page are stored, and after the storage, the communication can be cut off. is there. Therefore, after that, the user can display the designated page or the related page without worrying about time.

That is, the above-described automatic patrol function performs the following. -Retrieve a related page linked by a hypertext network structure from a specified page.・ Acquire pages within the designated page acquisition time. -After acquiring the page, the target page and the related page acquired are displayed immediately in conjunction with the viewer.

Hereinafter, the automatic cruise function will be described with a specific example. (1) Hypermedia document communication device (Japanese Unexamined Patent Publication No. Hei 8-875)
No. 26) In this hypermedia document communication device, history information indicating how many times links in the past that connect related scenes constituting a hypertext have been selected in the past is stored / managed. The pre-transfer scene determining unit determines whether each of the primary, secondary,..., I-th scenes linked from the display scene S0 for which the play request was made is a scene to be transferred in advance. Is calculated based on the history information of the corresponding link and the distance from the display scene S0 to the target scene Si. Then, a scene whose calculated relevance value is larger than the threshold value is selected as a pre-transfer candidate. By pre-transferring the scene selected in this way to the memory of the hyper document display terminal, the reading speed when the user operates a button to access the related scene can be improved.

(2) Software “Free Loader”
Loader, Inc. URL: http://www.freeloader.com/) This "free loader" is software that starts on a personal computer, and is software that automatically acquires a specified page on the WWW and saves it in a storage device. This software can be started automatically at a specified time. In this software, a number of pages are classified in advance, and a user can acquire a page corresponding to the specified classification item only by specifying the classification item.

(3) Software "Nami No Yarou" (BU
G., Inc. URL: http://www.bug.co.jp/nami-nori/in
dex.html) This “Nami No Yarou” is also software that runs on a personal computer and has the following features.・ The specified page is automatically acquired at the specified time (start time and end time).・ The number of links to pages that can be acquired can be specified in advance. When tracing hypertext links, it is possible to follow only links related to the specified server.

(4) Software "Internet Manager" (Nippon Electric URL: http://www.nec.co.jp/japan
ese / product / personal / product / inet / iam / iam-pl.html) This "Internet manager" is also software that runs on a personal computer and has the following features.・ A specified page can be automatically acquired at a specified time. -You can set restrictions on usage time and charges. -Multiple connections (phone numbers) can be registered with priorities.

[0011]

As shown in FIG. 9, the structure of a hypertext has a network structure in which a certain page is linked to a related page.
Therefore, the designated page and the related page acquired by the automatic patrol function include a very large amount of data that the user does not actually want, and the storage device requires a huge storage capacity. Particularly, in the case of a portable device, it is difficult to add an external storage device, so that a large cache area for storing acquired pages cannot be obtained.

In the above-described hypermedia document communication device having the automatic patrol function and software having the automatic patrol function, a page having a high degree of relevance, only a page of a designated item, or a designated item is acquired. By acquiring pages within the number of links, the number of acquired pages is reduced to some extent. However, with such an aperture, there is a limit to the number of acquired pages that can be reduced. Further, when the number of acquired pages is limited by time or usage fee, a page effective for the user is not always acquired. That is, the conventional hypermedia document communication device having the automatic patrol function and the software having the automatic patrol function have a problem in obtaining a page effective for the user in a small cache area such as a portable device.

An object of the present invention is to provide an automatic hypertext acquisition apparatus capable of efficiently and automatically acquiring a page effective for a user with a small cache area.

[0014]

According to one aspect of the present invention, there is provided a hypertext processing apparatus for automatically acquiring hypertext file data stored in a database connected in a network by a line. An automatic acquisition device, a top file storage unit storing a file name of a top file of a hypertext to be acquired, a related file list storage unit storing a file name of a related file, and An access condition storage unit in which access conditions to the network including the maximum depth level of the file are stored in association with each file name stored in the top file storage unit, and a file in which received file data is stored. The cache memory and the network via the line in accordance with the received acquisition request. Connection to a server on the network and issues a request to the connected server to obtain the file data of the top file and related files, and stores the file data returned from the server in the file cache memory In addition, a network interface unit for returning to the acquisition request destination, an analyzing unit for analyzing the received file data to extract a related file name, and returning the extracted related file name, and the network interface unit, the analyzing unit, and the related file A file acquisition unit that controls the list storage unit and obtains a top file whose file name is stored in the top file storage unit and a file related to the top file according to the access condition stored in the access condition storage unit. It is characterized by having a control unit.

In the above configuration, the file acquisition control section issues a request to acquire the top file stored in the top file storage section to the network interface section. Then, if the file requested to be obtained is not registered in the file cache memory, the network interface unit connects to a server on the network in accordance with the received request and issues the request for obtaining the top file. Then, the file returned from the server is stored in the file cache memory and returned to the file acquisition control unit.

Next, by the file acquisition control unit,
The file data of the received top file is sent to the analysis unit. Then, the analysis unit analyzes the received file data of the top file, extracts a related file name of the top file, and returns the extracted file name to the file acquisition control unit. Then, the file name of the extracted related file is stored in the related file list storage unit by the file acquisition control unit. Thereafter, in accordance with the access condition stored in the access condition storage unit, the file acquisition control unit issues a request to acquire the related file stored in the related file storage unit in the same manner as in the case of the top file. And the acquired related file is stored in the file cache memory.

In this manner, the related file is obtained by tracing the hypertext on the network according to the access condition set for each of the top files, so that the access within the limited range can be performed flexibly and accurately for each top file. Will be In particular, since the access condition includes a maximum depth level, the depth level when tracing on the network is limited for each of the top files,
Necessary files are automatically and accurately obtained within the capacity of the file cache memory.

According to a second aspect of the present invention, in the automatic hypertext acquisition apparatus according to the first aspect of the present invention, a tag included in the file data and indicating a relation state between the two files, A tag level representing a depth level at the time of tracing from the source file to the destination file on the network according to the state, and a tag level management table stored in association with each other, the analysis unit includes: Related file extracting means for extracting the related file name based on the related state represented by the tag included in the file data, adding the tag to the extracted related file name, and returning the tag to the file acquisition control unit, The file acquisition control unit refers to the tag level management table based on the tag transmitted from the analysis unit, and A depth level calculating means for calculating a depth level on the network, and a related file storage means for adding the calculated depth level to a corresponding related file name and storing the same in the related file list storage unit. When issuing the request for obtaining the related file, monitor whether the depth level of the relevant file on the network exceeds the maximum depth level, and if so, stop obtaining the file data. It is characterized by having level monitoring means.

According to the above configuration, the related file name is registered in the related file list storage with the depth level. Therefore, when a related file acquisition request is executed later by the file acquisition control unit, the depth level monitoring unit determines that the depth level of the hypertext of the related file to be acquired on the network is one of the above access conditions. Monitored so as not to exceed the depth level, the range of access on the network is limited by the depth level of the network.

According to a third aspect of the present invention, in the automatic hypertext acquiring apparatus according to the second aspect, the tag includes a tag indicating a related state in which two files together form the same page; It is characterized in that the two files include a tag indicating a related state that forms different pages.

According to the above configuration, a related state in which two files constitute the same page and a related state in which two files constitute different pages are distinguished, and respective tag levels are set. Is done.

According to a fourth aspect of the present invention, in the automatic hypertext acquiring apparatus according to the second aspect of the present invention, the tag is configured so that the two files together form the same page and have different time attributes. And a depth level calculation unit of the file acquisition control unit is adapted to reflect time information possessed by the tag in a calculated value of the depth level. .

According to the above configuration, the tag indicating the related state has the depth level of the related file indicating the related state in which the two files form the same page and have different time attributes. It is calculated reflecting the time information. Therefore, for example, by increasing the value of the depth level of the related file that takes time to display, the priority of acquisition is reduced.

According to a fifth aspect of the present invention, in the automatic hypertext acquiring apparatus according to the second aspect, the access condition is a depth on the network when viewed from a top page including the top file. A first access method for accessing the network in ascending order, and a second access method for sequentially accessing the deeper one from the top page. When the first access method is stored in the access condition storage unit, the storage unit adds the related file name and the depth level to the related file list storage unit each time the related file name and the depth level are added. While sorting in ascending order, the second
When the access method is stored, the related file name and the depth level are added to the end of the related file list storage section, and the file acquisition control section stores the access condition storage section. If the first access method is stored in the related file list element, the related file name and the depth level are sequentially read from the top of the related file list storage unit at the time of the related file acquisition element, while the second file is read.
When the access method is stored, the access method is sequentially read from the end of the related file list storage unit.

According to the above configuration, when the first access method is stored in the access condition storage unit, the depth on the network is ascending from the top page including the top file. Access is made and related files are obtained wide and shallow. On the other hand, when the second access method is stored, the access is performed sequentially from the top page to the deeper one to obtain the related file narrower and deeper. Thus, the acquisition of wide and shallow related files and the acquisition of narrow and deep related files from the hypertext network,
This is selectively performed according to the designated access method, and a valid related file is obtained within a limited cache area.

According to a sixth aspect of the present invention, there is provided the automatic hypertext acquiring apparatus according to the first aspect, wherein the media type of the file data and the acquisition information indicating whether or not to acquire the file data belonging to the media type. And the network interface unit has a file deletion unit that deletes file data stored in the file cache memory in accordance with an instruction from the file acquisition control unit. The file acquisition control unit determines that the acquisition is not to be performed by referring to the acquisition information in the acquisition information storage unit based on the interpretation result of the media type and the media type interpretation unit that interprets the media type of the received file data. Delete the file data of the file from the above network It is characterized by having a deletion instruction means for instructing the centers face portion.

According to the above configuration, the media type of the file data acquired according to the acquisition information preset in the acquisition information storage unit is limited, and only the file of the media type required by the user is acquired. .

According to a seventh aspect of the present invention, in the hypertext automatic acquisition apparatus according to the first aspect, the network interface unit is stored in the file cache memory in accordance with an instruction from the file acquisition control unit. File deletion means for deleting the file data, the access conditions include a maximum acquisition capacity defined for each top file, the file acquisition control unit, every time the relevant file is received,
It monitors whether or not the total capacity of the acquired files, taking into account the received related files, exceeds the above-mentioned maximum acquisition capacity. If so, the file capacity monitoring instructs the network interface unit to delete the last received file data. It is characterized by having means.

According to the above configuration, even if the capacity of the file cache memory is not large especially in the case of a portable device, the maximum number of acquisitions within the capacity can be achieved by optimally setting the maximum acquisition capacity. File data is obtained.

Further, the invention according to claim 8 is based on claim 1,
The hypertext automatic acquisition device according to any one of claims 2 and 6, further comprising an input unit,
The file name stored in the top file storage unit, the access condition stored in the access condition storage unit, the element of the tag level management table, or the element of the acquisition information storage unit is input / updated from the input unit. The feature is that it is possible.

According to the above configuration, the contents of the top file storage unit, the access condition storage unit, the tag level management table or the acquired information storage unit are updated and set by the user from the input unit, and the access range of the hypertext to the network is set. Is flexibly and appropriately restricted for each top file.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. FIG. 1 is a functional block diagram of the automatic hypertext acquisition device according to the present embodiment. FIG. 2 is a hardware block diagram for realizing the functions of FIG.

In FIG. 1, the top file list storage 1 stores a list of file names instructed to be visited by the user. Also, the top file list storage unit 1 is used to access the hypertext network such as the maximum depth level, the maximum number of circulating pages, the maximum number of circulating files, the maximum circulating capacity, and the circulating type in association with the file name. Is stored. The file cache memory 2 stores the obtained file data. In this way, by storing the data of the files distributed on the hypertext network in the file cache memory 2, when the same file is to be obtained later, the file cache memory is not accessed without accessing the network. By directly reading the data from the second file, the second and subsequent acquisition speeds for the same file can be increased.

The network interface unit 3 bridges the server 4 on the network and the patrol control unit 5. This network interface unit 3
Upon receiving a file acquisition request from the patrol control unit 5, the file cache memory 2 determines whether or not the data of the file for which the acquisition request has been issued is stored in the file cache memory 2. If the file exists, the data of the requested file is read from the file cache memory 2 and returned to the traveling control unit 5. On the other hand, if the file does not exist, a file request is issued to the server 4.
When the data of the file requested to be acquired is returned from the server 4, the data is returned to the traveling control unit 5 while being added to the file cache memory 2.

The analysis unit 6 analyzes the structure of the document file and extracts tags and related file names described in the acquired document file. Here, the related file is an image file (attached with an IMG tag) to be embedded in the acquired document file, and another document file (attached with the ANCHOR tag) related to the acquired document file. A document file having a time attribute and located at different times in the same document file (with a META tag). By attaching various tags as described above, a so-called “img” link or “ anchor "
Linked (associated) with links or "meta" links
File. In addition, as described above, the tag indicates a relation state between two files, and a file to which each tag is attached is associated with a related file that matches the relation state represented by the tag. That is, the analysis unit 6 associates the tag described in the acquired document file with the file to which the tag is attached,
It extracts the relevant file name.

The traveling file list storage unit 7 stores a traveling file list 71 as shown in FIG. As shown in FIG. 3, in the traveling file list 71, the related file name extracted by the analysis unit 6 and the depth level on the network of the hypertext in which the related file exists are registered in association with each other. Is done.

The management information storage unit 8 stores the depth level (current cyclic depth level), the number of cyclic pages, the number of cyclic files, the cyclic file on the file currently being processed by the cyclic control unit 5 on the hypertext network. A control parameter 81 such as a capacity, a tag level management table 82 as shown in FIG. 4, and a media type management table 83 as shown in FIG. 5 are stored.

Here, the control parameter "depth level" in the management information represents the depth of the hypertext of the file being processed on the network, and the file read from the top file list storage unit 1. The depth level at the time of processing the file data relating to (top file) is “1”. Then, the depth level of each related file is set as shown in FIG. 10 according to the related state of the related file. For example, in the case of a related file that constitutes a page different from the above top page,
The depth level is set to “2”. The control parameter “number of pages to be visited” indicates how many pages belong to which files have been processed up to now, and the number of processes for a plurality of files constituting one page is counted as “1”. The control parameter “number of cyclic files” indicates the number of files actually cyclically processed. Further, the control parameter “circulation capacity” indicates the total capacity of data relating to files acquired by circulation. By using these control parameters 81, as described above, the cyclic operation of the cyclic control unit 5 can be easily performed according to the maximum value (access condition) of the control parameters given from the outside and registered in the top file list storage unit 1. And is optimally controlled.

The tag level management table 82
Manages access to the related file associated by the tag. For example, taking the depth level when accessing a related file as an example, when moving to the process of obtaining the related file associated with a certain tag, how much the current value of the traveling depth level should be increased is described. Manage it.

Therefore, according to the present embodiment, only by updating the contents of the tag level management table 82,
Even if a new tag is newly established or the related state represented by the tag is changed, it can be flexibly handled. Also, by making it possible to set a value below the decimal point as the “tag level” value, it is possible to set the middle layer of the unit “1” of the normal depth level. In addition, by setting the intermediate level of the unit “1” of the depth level as the tag level value, the place where “0” should be set as the tag level value in order to avoid infinite chaining should be used. The value can be set. Here, the above “infinite chain”
When a file is accessed by sequentially tracing the hypertext network, (for example, tag level = 0
Is set), the depth level on the network does not change, and the access is chained infinitely on the network.

The media type management table 8
3, a media type of file data and an acquisition flag indicating whether or not acquisition of file data belonging to the media type is possible are registered in association with each other.
The media type management table 83 manages whether to acquire the received file data.

The traveling control unit 5 obtains the data of the file specified by the user as follows in accordance with the list of the top files stored in the top file list storage unit 1.

That is, the file name of the file to be circulated is read from the top file list storage unit 1 or the circulating file list storage unit 7 and a request to obtain the file is issued to the network interface unit 3.
Then, when data is returned from the network interface unit 3, it is determined whether or not the data type is a hypertext type. If it is not a hypertext type, discard the received data,
If the data is of the hypertext type, the data is transferred to the analysis unit 6 and the associated file name is extracted. Then, the related file name received from the analysis unit 6 is added and registered in the traveling file list storage unit 7. In this case, the file data acquisition process is performed in accordance with the access conditions stored in the top file list storage unit 1 and the management information stored in the management information storage unit 8.

The traveling control unit 5 determines the depth level to be stored in the traveling file list storage unit 7 together with the related file name based on the tag level of the tag level management table 82 stored in the management information storage unit 8. Is calculated by the following equation. Depth level = current patrol depth level + "tag level" of the corresponding tag

The traveling control unit 5 is registered in the traveling file list storage unit 7 according to one of the following two traveling types stored in the top file list storage unit 1 as one of the access conditions. Get related files. (1) Type A In type A, the contents of the traveling file list 71 are
Each time a new related file name is added, it is sorted in ascending order of the depth level associated with each related file name.
Then, when accessing the hypertext network, access is made in the order of the head related file (that is, the related file having the smallest depth level). And
The accessed related file name is deleted from the traveling file management list. Therefore, this type A is a page whose main is a file (top file) acquired based on the designation by the top file list storage 1.
From the (top page) view, it can be said that this is a horizontal traveling method in which the access is made in the horizontal direction in the order of the depth level.

(2) Type B In type B, when a new related file name is added to the traveling file list 71, it is added to the end. When accessing the network, access is made in order from the last related file. Then, the accessed related file name is deleted from the traveling file management list. Therefore, this type B can be said to be a vertical traveling system in which a user accesses a deeper depth level sequentially through a link from a top page.

When all the related files registered in the traveling file list storage unit 7 are deleted, the acquisition of the top page and the related page related to the file name read from the top file list storage unit 1 ends. is there.

From the input unit 9, the top file name registered in the top file list storage unit 1, the access condition, and the elements of the tag level management table 82 and the media type management table 83 stored in the management information storage unit 8. Is set manually. In this way, by externally designating the access conditions and the elements of the tag level management table 82 and the media type management table 83, the range in which the hypertext is to be accessed on the network can be flexibly limited or changed.

FIG. 2 shows the hardware configuration of the automatic hypertext acquisition apparatus according to the present embodiment. The network device 11 connects the present hypertext automatic acquisition device to the communication / network 12. File data acquired from the communication / network 12 via the network device 11 is stored in the external storage device 1.
3 is stored. The external storage device 14 stores a method of accessing a specified file, the above access conditions, a related file name to be acquired, management information, and the like. Also, RAM
The memory 15 composed of (random access memory) is used as a work memory.

The CPU 16 operates according to a control program stored in a program memory 17 constituted by a ROM (Read Only Memory).
The external storage device 14 and the memory 15 are controlled to acquire the top file and the related file. The input device 18 inputs access conditions, various parameters and commands for optimally controlling the operation of the CPU 16.

That is, the network device 11 constitutes the network interface unit 3 in FIG. 1, the external storage device 13 constitutes the file cache memory 2, and the external storage device 14 stores the top file list storage unit 1 and the traveling file list storage. The section 7 and the management information storage section 8 are configured, the CPU 16 configures the tour control section 5 and the analysis section 6, and the input device 18 configures the input section 9.

Hereinafter, the operation of the tour control processing performed by the tour controller 5, the network interface 3, and the analyzer 6 will be described in detail. In the following, HTML (Hyper Text
This will be described by taking a document described in “tMarkupLanguage” as an example. In a document described in HTML, in order to uniquely represent where a physical file exists on a network, a file name is described by a notation called URL (Uniform Resource Location). This URL is a notation having the following format. proto: // server / path / ... proto: Protocol name for accessing on the network (usually http (HyperTextTransfarProtocol) is used) server: Specified server machine (host) path: Specified server machine File location

In the above-mentioned HTML, the following tags can be described in reference portions of other files in the document file to represent the meanings of the various related states as described above. ... <A href=URL> ...: ANCHOR tag

FIG. 9 shows an example in which the structure of the hypertext to be acquired is as shown in FIG.
The operation of the tour control process will be specifically described with reference to the flowcharts of FIGS.

In step S 1, the tour control unit 5 controls the control parameters “depth level”, “page number”, “page number”, and “tour capacity” stored in the management information storage unit 8. , Are initialized as follows. Depth level CurrentLevel = 0 Number of cyclic pages CurrentPageNum = 0 Number of cyclic files CurrentFileNum = 0 Cycling capacity CurrentVolume = 0 Also, the maximum value of the control parameter 81 is automatically stored in the work memory as a default value, for example, as follows. Initially set to Also, the management information “tour type” is initialized as follows. Maximum depth level MaxLevel = 3 Maximum number of circulating pages MaxPageNum = 100 Maximum number of circulating files MaxtFileNum = 500 Maximum circulating capacity MaxVolume = 100 (kbytes) Cycling type = Type A

In step S 2, the traveling control unit 5 reads the unprocessed file name and the access condition associated with the file name from the top file list storage unit 1. Here, the read file name is, for example, “file A”. The file name "file A" is actually described by a URL.
In addition, the above access conditions "maximum depth level", "maximum number of circulating pages", "maximum number of circulating files", "maximum circulating capacity", and "circular type" correspond to the read file name "file A". If so, the default value and the content of the management information “tour type” are updated with the associated access condition.

In step S 3, the contents of the control parameter “depth level CurrentLevel” stored in the management information storage unit 8 are updated to “1” by the tour control unit 5. CurrentLevel = 1 In step S4, the patrol control unit 5 requests the network interface unit 3 to acquire "file A". In step S5, the file cache memory 2 is searched by the network interface unit 3, and "file A" requested to be obtained in step S4 is stored in the file cache memory 2, or the file cache memory 2 is requested to be obtained in step S35 later. It is determined whether there is a related file to be executed. As a result, if there is, the process proceeds to step S6; otherwise, the process proceeds to step S7.
In step S 6, the file data of “file A” or “related file” is read from the file cache memory 2 by the network interface unit 3 and returned to the traveling control unit 5. After that, the process proceeds to step S10.

In step S7, the network interface unit 3 issues a file request of "file A" or "related file" to the specified server 4 described in the file name. In step S8,
The network interface unit 3 checks whether data has been returned from the designated server 4 or not. If there is data return, step S
Go to 9. In step S9, the network interface unit 3 starts storing the received file data in the file cache memory 2. At the same time, it is returned to the tour control unit 5.

In step S10, the tour control unit 5 obtains the file data based on the control parameter “tour volume CurrentVolume” stored in the management information storage unit 8 and the size of the received file data. If the acquired file capacity is the maximum cyclic capacity MaxVolume
(= 100 (k bytes)) "is determined by the following equation. CurrentVolume + received file data capacity <maximum cyclic capacity MaxVolume As a result, if it does not exceed, the process proceeds to step S12,
If it exceeds, go to step S11. In step S11,
The patrol control unit 5 executes the following interruption processing. That is, a request to delete the file data whose storage in the file cache memory 2 has been started in step S9 or the file data read from the file cache memory 2 in step S6 is issued to the network interface unit 3. Then, the received file data stored in the file cache memory 2 up to this point is deleted. After that, the process proceeds to step S24.

In step S 12, the media type of the file data received by the traveling control unit 5 is stored in the media type management table 8 stored in the management information storage unit 8.
Checked with reference to 3. In step S13, according to the result of the check in step S12, the traveling control unit 5 determines whether the media type is a hypertext type, that is, whether the media type is HTML data (the media type is "text / html"). Is determined. As a result, if the data is HTML data, the process proceeds to step S16; otherwise, the process proceeds to step S14.

In step S14, the patrol control unit 5 determines whether the received file data is file data to be acquired with reference to the result of the check in step S12. As a result, if the file data is to be acquired, the process proceeds to step S15, and if not, the process proceeds to step S11 to execute the interruption process. In step S15, the traveling control unit 5 performs a discarding process of discarding the received file data to the end. As a result, step S
At 9, the file data whose storage in the file cache memory 2 has been started is stored and acquired to the end. Alternatively, the file data read from the file cache memory 2 in step S6 is obtained. After that, the process proceeds to step S22.

In step S16, the traveling controller 5 sends the file data determined to be HTML data in step S13 to the analyzer 6.
In step S17, the analysis unit 6 performs the following HTML analysis processing. That is, the tag described in the HTML data is read, and based on the tag, the relation state with the configuration file of the page whose main file is the HTML data is obtained. Step S18
Then, the analysis unit 6 extracts the related file name of the HTML data based on the related state obtained in step S17, and returns the extracted related file name to the traveling control unit 5 together with the read tag. Is done. By this step, if the HTML data is file data of a top file, a child file of the top file is extracted as a related file. If the HTML data is file data of a related file, a grandchild file (great-grandchild file,...) Of the top file is extracted as a related file.

In step S 19, based on the tag received by the traveling control unit 5, the depth level of the related file is stored in the control parameter “depth level CurrentLevel” stored in the management information storage unit 8, and “Tag level TAG” obtained from the tag level management table 82 LEVEL "
Is calculated based on the following equation. FileLevel = CurrentLevel + TAG LEVEL

Here, the tag of the relevant file is “ME
If the related file forms the same page as the related file and has a different time attribute, the analysis unit 6 extracts the time information “Time” extracted from the tag. Is used to calculate the depth level FileLevel of the related file by the following equation. FileLevel = CurrentLevel + TAG LEVEL × TimeLevel The “TimeLevel” is calculated by the following equation. That is, when the time information “Time” is larger than “StandardTime”, it takes time to display, so the depth level related to the related file is increased, and the priority of acquisition is reduced. Here, the “StandardTime” is a standard time set in advance, and if it is within this time, it is regarded as substantially the same time.

In step S20, the traveling controller 5 associates the related file name obtained in step S18 with the "depth level FileLevel" calculated in step S19, and stores the file name in the work memory. It is stored in the traveling file list storage 7 in accordance with the set management information “tour type”. That is, when the management information “tour type” is “type A”, after adding the related file name and the depth level to the tour file list 71, the tour file list 71 is added to the “depth level FileLeve”.
l ”in ascending order. On the other hand, when the management information “tour type” is “type B”, a new related file name and a new depth level are added to the end of the tour file list 71.

In step S 21, the content of the control parameter “current page number CurrentPageNum” stored in the management information storage unit 8 is updated by the tour control unit 5 as follows. That is, if the file currently undergoing the cyclic processing is the top file, the cyclic page number CurrentPageNum is updated by the following equation. CurrentPageNum = CurrentPageNum + 1 Further, in the case of the above-mentioned related file, referring to the “page flag” of the tag level management table 82 based on the tag, the number of circulating pages CurrentPageNum is updated by the following equation. CurrentPageNum = CurrentPageNum + value of “page flag” In step S22, the tour control unit 5 updates the content of the control parameter “current file number CurrentFileNum” stored in the management information storage unit 8 as follows. CurrentFileNum = CurrentFileNum + 1 In step S23, the tour control unit 5 sets the control parameter “tour capacity Cu” stored in the management information storage unit 8.
rrentVolume "is updated as follows. CurrentVolume = CurrentVolume + size of acquired file data

In step S24, the traveling control unit 5 determines whether or not the traveling file list 71 has a related file name. As a result, if there is, the process proceeds to step S26; otherwise, the process proceeds to step S25. In step S25, the traveling control unit 5 determines whether or not an unprocessed file name exists in the top file list storage unit 1 to determine whether all top files in the top file list storage unit 1 have been processed. It is determined whether the patrol has been completed. As a result, if not completed, the above-described step S
Returning to step 2, the process moves to the next top file. On the other hand, if it has been completed, the tour control processing operation ends.

In step S26, the tour control unit 5 checks the contents of the management information "tour type" set in the work memory. Step S27
Then, the tour control unit 5 determines whether or not the content of the management information "tour type" checked in step S26 is "type A". as a result,
If it is "type A", the process proceeds to step S28; otherwise, the process proceeds to step S29. In step S28, the traveling control unit 5 reads one related file name (for example, “file B”) from the beginning of the traveling file list 71. After that, the process proceeds to step S30. Step S
In 29, since the "tour type" is "type B" by the tour controller 5, one related file name (for example, "file B") from the end of the tour file list 71 is displayed.
Is read.

In step S 30, the traveling control unit 5 deletes the related file name “file B” read out in step S 28 or step S 29 from the traveling file list 71. In step S31, the content of the control parameter “depth level CurrentLevel” stored in the management information storage unit 8 is
It is updated to the depth level FileLevel added to the related file name “file B” read in step S28 or step S29. CurrentLevel = FileLevel

In step S32, the “depth level” updated in step S31 by the tour control unit 5
Based on the content of “CurrentLevel” and the content of “maximum depth level MaxLevel” stored in the work memory, it is determined whether or not the following expression is satisfied. Max depth level MaxLevel (= 3) <int (depth level Cur
(rentLevel) As a result, if the condition is satisfied, the process proceeds to step S24; otherwise, the process proceeds to step S33. Here, int (x) is a function related to x, and is an integer conversion function by truncating x below the decimal point.

In step S33, the patrol control unit 5 causes the patrol control unit 5 to set the control parameter “Circuit page number CurrentPageNu”.
m) and the content of “Maximum number of circulating pages MaxPageNum” stored in the work memory.
It is determined whether the following equation is satisfied. Maximum number of circulating pages MaxPageNum (= 100) <number of circulating pages CurrentPageNum As a result, if the condition is satisfied, the process proceeds to step S24; otherwise, the process proceeds to step S34.

In step S34, the traveling control unit 5 sets the control parameter "number of traveling files CurrentFileN
Based on the contents of "um" and the contents of "maximum number of cyclic files MaxFileNum" stored in the work memory, it is determined whether or not the following expression is satisfied. The maximum number of traveling files MaxFileNum (= 500) <the number of traveling files CurrentFileNum As a result, if the condition is satisfied, the process proceeds to step S24; otherwise, the process proceeds to step S35.

In step S35, the patrol control unit 5 requests the network interface unit 3 to acquire the “related file B”. After that, the process returns to step S5, and the file cache memory 2
To determine whether or not “related file B” exists in the file. If it is determined in step S24 that there is no related file name in the traveling file list 71, and if it is determined in step S25 that the traveling for all the top files in the top file list storage unit 1 has been completed, the traveling control process is performed. End the operation.

That is, in the present embodiment, the related file extracting means is constituted by the step S18, the depth level calculating means is constituted by the step S19, and the related file storing means is constituted by the step S20. And
The depth level monitoring means is constituted by the steps S31 and S32, the file deletion means and the deletion command means are constituted by the steps S11 and S14, the media type interpretation means is constituted by the step S12, and the file capacity is constituted. The monitoring means is composed of steps S10 and S11.

As described above, in the present embodiment, the top file list storage unit 1 that stores the file names of the top files to be circulated is stored in the top file list storage unit 1 in association with each file name, with respect to each file set by the user. Access conditions for the depth level, the maximum number of pages, and the maximum number of files are stored. When the control parameters “depth level”, “number of circulating pages”, and “number of circulating files” stored in the management information storage unit 8 reach the maximum depth level, the maximum number of circulating pages, and the maximum number of circulating files, respectively. The patrol process is terminated. Therefore, like the conventional hypermedia document communication device and the software "free loader", "Nashiri bastard", and "Internet manager", simply select pages with high relevance, classify the pages, and obtain pages that can be acquired. More flexibly and more precisely than limiting the number of files, the access range on the network is restricted for each top file, and necessary files in the restricted cache area are automatically stored in the file cache memory 2. You can get it.

A tag level management table 82 is stored in the management information storage section 8, and the tag level management table 82 indicates that two files are in a related state such that they constitute the same page. IMG tags ", 2
An “ANCHOR tag” indicating that two files are related to form another page, and a “META tag” indicating that two files form the same page and have different time information. Tag level TAG according to tags such as "tag" LEVEL is registered. Then, when acquiring the related file of the top file stored in the top file list storage unit 1, the traveling control unit 5 refers to the tag level management table 82 to determine the current depth of the hypertext on the network. The tag level TAG of the current level and the tag of the related file to be obtained Based on the LEVEL, the depth level FileLevel of the related file to be acquired is calculated. Therefore, according to the present embodiment, the depth level FileLe calculated as described above is used.
Based on vel, it is possible to monitor so that the depth level on the network where the cyclic processing is currently performed does not exceed the maximum depth level MaxLevel.

When the traveling control unit 5 calculates the depth level FileLevel of the related file extracted by the analyzing unit 6, when the tag of the related file is a META tag, it is described in the tag. According to the time information "Time", the value of the depth level FileLevel of the related file is increased to lower the priority of acquisition. In this way, by reflecting the time information "Time" to the depth level FileLevel of the related file, the acquisition of the related file that takes a long time to display can be postponed, and the important related file can be acquired preferentially. You can.

In the present embodiment, the analysis unit 6 sets the depth type as viewed from the top page as the traveling type when the related file is acquired according to the related file name registered in the traveling file list 71. Type A, which traverses in the horizontal direction in the order of depth, and type B, which traverses sequentially from the top page to the deeper one, are defined. Then, the patrol control unit 5 registers and reads the related file name in the patrol file list 71 based on the management information “tour type” stored in the top file list storage unit 1 in association with each file name. ing. Therefore, the related file can be acquired by either the method of acquiring the wide and shallow related file or the method of acquiring the narrow and deep related file according to the traveling type specified by the user.

In the present embodiment, the media type management table 83 in which a media type representing the type of file data is associated with an acquisition flag indicating whether or not to acquire file data belonging to the media type is stored in the media information management table 83. It is registered in the storage unit 8. Then, the traveling control unit 5 refers to the media type management table 83 to determine the media type of the received file data to determine whether or not to acquire the file data, and if not, registers it in the file cache memory 2. The file name of the file is deleted. Therefore, by setting the media type management table 83 in advance, it is possible to limit the file data to be obtained as the related file and obtain only the file data of the media type valid for the user.

In the present embodiment, the top file list storage unit 1 stores the maximum circulation capacity of each top file set by the user as an access condition in association with each file name. Each time the patrol control unit 5 receives the related file, the patrol control unit 5 monitors whether or not the total capacity of the acquired files including the related file exceeds the maximum patrol capacity. If it exceeds, the network interface unit 3 is instructed to delete the file data of the related file received last. Therefore, even in the case of a portable device, especially when the capacity of the file cache memory 2 cannot be increased, a file effective for the user can be acquired within the above-mentioned capacity.

In this case, when the total capacity of the acquired files exceeds the maximum cyclic capacity, the cyclic processing is not stopped immediately but the last received file data is deleted and the cyclic processing is continued. If the data capacity of the related file received in the cyclic processing is small and the total capacity of the acquired file does not exceed the maximum cyclic capacity, the related file is acquired. Therefore, the maximum number of files that can be stored in the file cache memory 2 can be obtained.

FIG. 11 shows that the maximum cyclic capacity MaxVolume is "1".
00 k bytes "and indicates the file acquisition range when" type B "is specified as the cyclic type. In this case, first, a top page including the images 1 and 2 and the medium 1 with the file A as a main file, and a file (linked by a link meta) at the level “1” of the same depth level as the top page B is obtained. Next, in accordance with the vertical traveling method, the traveling processing is sequentially performed on the file C, the file D, the file E, and the file F in order of the depth level. At this point, the cyclic capacity CurrentVolume is 94 kbytes, and the margin is 6 kbytes. Therefore, next, the traveling control unit 5 acquires the file H which is within the above-mentioned margin (the capacity is 6 kbytes) among the files G and H at the depth level of level “2”. As a result, the cyclic capacity CurrentVolume is the maximum cyclic capacity Max.
The size of the file is 100 kbytes, which is the same as the volume, and the files in the area indicated by hatching in FIG.
It is obtained as the maximum number of valid files that can be obtained within "0 kbytes". As described above, according to the present embodiment, a user can access a small cache area with a small cache area according to the access range limited by the access condition (in this case, “maximum cyclic capacity” and “cyclic type B”) by the user. The necessary pages can be obtained efficiently.

As described above, according to the present embodiment, there is no need to acquire hypertext while instructing by interactively during communication as in the case where the user interface tool “Prowser” is used. It is possible to eliminate waste of communication until issuing an instruction and loss of accessing the same file many times. Furthermore, the range of the network to be circulated is restricted more flexibly than the conventional hypermedia document communication device having the automatic circulating function and the software having the automatic circulating function, so that necessary files can be automatically stored in a small cache area. It can be obtained accurately and accurately.

[0084]

As is apparent from the above description, in the automatic hypertext acquisition apparatus according to the first aspect of the present invention, the file acquisition control section stores the network interface section in the top file storage section or the related file list storage section. File acquisition control for issuing a file acquisition request for the extracted file, sending the returned file data to the analysis unit to extract the related file name, and storing the extracted related file name in the related file list storage unit. Since access is performed in accordance with the access condition to the network including the maximum depth level stored in the access condition storage unit for each top file, access to the network is restricted flexibly and accurately for each top file. It can be carried out.

In particular, since the access condition includes the "maximum depth level", the depth level when tracing on the network can be restricted for each top file. That is, according to the present invention, a necessary file can be accurately and automatically acquired according to the capacity of the file cache memory.

Further, the automatic hypertext acquisition apparatus according to the second aspect of the present invention stores the tag included in the file data and the tag level in the tag level management table in association with each other, and the analysis section extracts the related file. Means for extracting a related file name based on the related information represented by the tag and returning the file name together with the tag to the file acquisition control unit, wherein the file acquisition control unit uses the tag level by a depth level calculation unit. Calculating the depth level of the related file, adding the related file name to the related file name by the related file storage unit and storing the same in the related file list storage unit, and issuing the acquisition request of the related file by the depth level monitoring unit. In order to monitor the depth level of the relevant file so that it does not exceed the maximum depth level of the above access condition, Access range on the network at the time of acquisition request related files by Airu acquisition control unit may limit so as not to exceed the maximum depth level.

The tag in the hypertext automatic acquisition device according to the third aspect of the present invention includes a tag indicating a related state in which two files together form the same page,
Since the two files include a tag indicating a related state that constitutes a different page, different tag levels can be set for the two related states.

The tag in the hypertext automatic acquisition device according to the fourth aspect of the present invention includes a tag indicating a related state in which the two files together form the same page and have different time attributes. Since the depth level calculation means of the file acquisition control unit reflects the time information of the tag in the calculated value of the depth level, for example, the depth level of the related file which takes a long time to output By increasing the value, the priority of obtaining the relevant file can be lowered.

The related file storage means of the file acquisition control unit in the apparatus for automatically acquiring hypertext according to the fifth aspect of the present invention is arranged so that, when the first access method is stored in the access condition storage unit, the related file is stored. Each time the related file name and the depth level are added to the list storage unit, the list is sorted in ascending order of the depth level, and when the second access method is stored, the tail is added to the end of the related file list storage unit. In the case of the first access method, the file acquisition control unit reads the related file name and the depth level in order from the top of the related file list storage unit, In this case, the data is read sequentially from the end. In the case of the first access method, the top file including the top file is viewed from the top page. While the depth of the over serial network is made shallow access the data in order, in the case of the second access method, access towards deep sequentially the depth from the top page is performed. Therefore, either the acquisition of a wide and shallow related file from the hypertext network or the acquisition of a narrow and deep related file can be selectively performed by specifying an access method as one of the access conditions. That is, according to the present invention,
By properly specifying the above access method, valid related files can be obtained within a limited cache area.

The automatic hypertext acquiring apparatus according to the present invention stores the media type of the file data and the acquisition information of the file data belonging to the media type in the acquisition information storage unit, The acquisition control unit interprets the media type of the received file data by the media type interpretation unit, and based on the interpretation result of the media type, determines by the deletion instruction unit that the acquisition is not to be performed by referring to the acquisition information storage unit. Since the deletion of the file data is instructed to the network interface unit, the media type of the file data acquired as the related file can be limited according to the acquisition information preset in the acquisition information storage unit. Therefore, according to the present invention, it is possible to acquire only the file of the media type required by the user.

According to a seventh aspect of the present invention, in the hypertext automatic acquisition device, the file acquisition control unit includes a file capacity monitoring unit, and each time a related file is received, the acquired file is added with the received related file. When the total capacity of the file cache memory exceeds the maximum acquisition capacity as the access condition, the network interface unit is instructed to delete the last received file data. Even if the capacity of the file is not large, by setting the maximum acquisition capacity optimally, the maximum number of valid file data that can be acquired within the capacity can be acquired.

[0092] Further, the automatic hypertext acquisition device according to the invention according to claim 8, wherein the file name stored in the top file storage unit, the access condition stored in the access condition storage unit, and the element of the tag level management table. ,
Alternatively, since the elements of the acquisition information storage unit can be input and updated from the input unit, the user sets and updates the top file name, access conditions, and elements of both tables from the input unit. In addition, it is possible to flexibly and precisely restrict the access range of the hypertext on the network.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of a hypertext automatic acquisition device according to the present invention.

FIG. 2 is a hardware block diagram for realizing the functions shown in FIG.

FIG. 3 is a diagram illustrating an example of a traveling file list registered in a traveling file list storage unit illustrated in FIG. 1;

FIG. 4 is a diagram showing an example of a tag level management table stored in a management information storage unit shown in FIG.

FIG. 5 is a diagram showing an example of a media type management table stored in a management information storage unit shown in FIG.

FIG. 6 is a flowchart of a tour control processing operation performed by the tour control unit, the network interface unit, and the analysis unit shown in FIG. 1;

FIG. 7 is a flowchart of a tour control processing operation following FIG. 6;

FIG. 8 is a flowchart of a tour control processing operation following FIG. 7;

FIG. 9 is a diagram illustrating a structure of a hypertext to be acquired.

FIG. 10 is an explanatory diagram of a depth level.

FIG. 11 is a diagram showing a file acquisition range when the maximum cyclic capacity is 100 kbytes.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Top file list storage part, 2 ... File cache memory, 3 ... Network interface part, 4
... server, 5 ... tour control unit, 6
... Analyzer, 7 ... Circulation file list storage, 8 ... Management information storage, 9 ...
Input unit, 71: traveling file list, 81: control parameter, 82: tag level management table, 8
3 ... Media type management table.

Claims (8)

[Claims] 1. An automatic hypertext acquisition apparatus for automatically acquiring hypertext file data stored in a database connected in a network by a line, wherein a file name of a top file of the hypertext to be acquired is The stored top file storage unit, the related file list storage unit storing the file name of the related file, and the network access condition including the maximum depth level when tracing the network are stored in the top file storage unit. An access condition storage unit stored in association with each file name stored in the unit, a file cache memory in which received file data is stored, and a server on the network via the line in accordance with the received acquisition request Connect to the above and connect to the above server A network interface unit that sends the file data returned from the server to the file cache memory and returns the file data to the acquisition request destination, while analyzing the received file data. An analysis unit that extracts a related file name and returns the extracted related file name; and controls the network interface unit, the analysis unit, and the related file list storage unit, and controls the access stored in the access condition storage unit. An automatic hypertext acquisition device, comprising: a file acquisition control unit that acquires a top file whose file name is stored in the top file storage unit and a file related to the top file according to a condition. 2. The automatic hypertext acquisition device according to claim 1, wherein a tag included in the file data and indicating a relation state between the two files, and a relation source on the network according to the relation state indicated by the tag. And a tag level representing a depth level at the time of tracing from the file to the related file, and a tag level management table in which the tag level is stored in association with each other. Related file extraction means for extracting the related file name based on the related state, adding the tag to the extracted related file name, and returning the file to the file acquisition control unit; On the basis of the tag sent from the analysis unit, referring to the tag level management table, the related file on the network is referred to. Depth level calculating means for calculating the depth level in the above, related file storage means for adding the calculated depth level to a corresponding related file name and storing the same in the related file list storage unit, Depth level monitoring means for monitoring whether or not the depth level of the relevant file on the network exceeds the maximum depth level when issuing an acquisition request, and stopping the acquisition of file data if it exceeds the maximum depth level An automatic hypertext acquisition device, comprising: 3. The automatic hypertext acquisition device according to claim 2, wherein the tag is a tag indicating a related state in which two files together form the same page, and the two files form different pages. An automatic hypertext acquisition device comprising a tag indicating such a related state. 4. The hypertext automatic acquisition device according to claim 2, wherein the tag includes a tag indicating a related state in which the two files together form the same page and have different time attributes. The apparatus for automatically acquiring hypertext, wherein the depth level calculation means of the file acquisition control unit reflects the time information of the tag in the calculated value of the depth level. 5. The automatic hypertext acquisition device according to claim 2, wherein the access condition is a first access in which the access is performed in ascending depth on the network when viewed from a top page including the top file. And an access method for the network having a second access method for sequentially accessing the deeper one from the top page, wherein the related file storage means of the file acquisition control unit includes the access condition storage unit When the first access method is stored in the related file list storage unit, the related file name and the depth level are sorted in ascending order of the depth level each time they are added to the related file list storage unit. If the access method is stored, the related file name and depth level are stored in the related file list. When the first access method is stored in the access condition storage unit, the file acquisition control unit stores the related file list at the time of the related file acquisition request. The related file name and the depth level are sequentially read from the head of the set, and when the second access method is stored, the related file name and the depth level are sequentially read from the end of the related file list storage unit. A hypertext automatic acquisition device characterized by the above-mentioned. 6. The automatic hypertext acquisition device according to claim 1, wherein a media type of the file data and acquisition information indicating whether to acquire file data belonging to the media type are stored in association with each other. An acquisition information storage unit, the network interface unit has a file deletion unit that deletes file data stored in the file cache memory according to an instruction from the file acquisition control unit, and the file acquisition control unit Media type interpreting means for interpreting the media type of the received file data, and deleting the file data of the file determined not to be acquired by referring to the acquired information in the acquired information storage unit based on the interpretation result of the media type. Instruct the above network interface An automatic hypertext acquisition device, comprising: 7. The automatic hypertext acquisition device according to claim 1, wherein the network interface unit deletes file data stored in the file cache memory according to an instruction from the file acquisition control unit. The access condition includes a maximum acquisition capacity defined for each top file, and the file acquisition control unit, each time the related file is received, obtains the acquired file in consideration of the received related file. A file capacity monitoring means for monitoring whether or not the total capacity of the file exceeds the maximum acquisition capacity, and in the case of exceeding the maximum capacity, instructing the network interface unit to delete the last received file data. Text automatic acquisition device. 8. The automatic hypertext acquisition device according to claim 1, further comprising: an input unit, wherein a file name stored in the top file storage unit; The access condition stored in the access condition storage unit, the element of the tag level management table, or the element of the acquisition information storage unit can be input and updated from the input unit.