JP3584837B2 - Distributed information securing device, distributed information securing business system, and machine-readable recording medium recording program - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a technology for managing information circulating on a computer network, and more particularly to a data management technology for enabling long-term and constant reference to fluid information published on the Internet.
[0002]
[Prior art]
Detecting the update after the update is disclosed, for example, in JP-A-11-015851 in "WWW page link control system and recording medium recording control processing program therefor". Is updated, update identification information indicating that fact can be displayed on the link source page.
[0003]
Also, refer to the first page stored in the first computer in the "hyperlink automatic updating method" of JP-A-10-333966 and the "information synchronization method" of JP-A-09-293010. By maintaining information of a second page held by a second computer having a link to be made in a database on the first computer, when the first page is updated or moved, the page is referred to Disclosed is a method for notifying a second computer having a link so that a link that refers to the first page included in the second page can be updated.
[0004]
[Problems to be solved by the invention]
In information distributed and managed on a computer network based on a hypertext structure such as WWW, it is possible to define a link between pieces of information and define a reference to information stored in a different computer. The administrator of the referenced information can update the contents of the referenced information, such as changing, moving, or removing it, without notice to the administrator of the referring information. However, there arises a problem that reference itself becomes impossible.
[0005]
In the "automatic hyperlink updating method" of JP-A-10-333966 and the "information synchronization method" of JP-A-09-293010, it is necessary to register the information of the reference source in the computer of the reference destination. Otherwise, the update of the information of the reference destination is not notified to the reference source. Further, according to “WWW page link control system and a recording medium storing the control processing program” in Japanese Patent Application Laid-Open No. H11-015851, the information of the reference destination is updated by the reference source without registering the computer in the reference destination. However, for that purpose, it is necessary to access the computer of the reference destination and acquire information in order to check the update status regardless of the presence or absence of the actual update.
[0006]
In either method, the update is notified to the reference source after the update of the reference destination, and depending on the content of the update, the information of the reference destination may differ from the reference intended by the reference source. Thus, the problem of losing the value of reference may occur.
[0007]
Therefore, an object of the present invention is to provide a distributed information securing apparatus that allows a reference source to know an update time and an update content before an update of information of a reference destination occurs and to take appropriate action. .
[0008]
[Means for Solving the Problems]
The distributed information securing device of the present invention achieves the above object,
A first computer and a second computer are connected via a computer network,
The first computer comprises:
Electronic document storage means for storing the referenced document;
Expiration date and when it expiresFor the referenced documentDoneIndicates whether the operation is a delete, move, or updateExpiration date setting means for setting expiration date information including an operation type in the reference destination document,
The second computer comprises:
Electronic document storage means for storing a reference source document including link information to the reference destination document,
Reference document acquisition means for acquiring a reference destination document referred to by the reference source document based on link information,
Expiration date analysis means for detecting expiration date information set in the reference destination document acquired by the reference document acquisition means;
An expiration date registration control unit that stores the expiration date information of the referenced document in the expiration date storage unit in association with the link information to the referenced document based on the analysis result of the expiration date analysis unit;
If the operation type included in the expiration date information stored in the expiration date storage unit in association with the link information to the reference destination document is delete or update, the link is set at a time earlier than the expiration date. The reference document indicated by the information is backed up to the backup document storage means, and the link information in the reference source document is changed to indicate the reference document backed up in the backup document storage means. At the time of expiration, the link information in the reference source document is changed to indicate the destination of the reference destination documentTerm processing means.
[0009]
In this configuration, the expiration date analysis unit detects the expiration date information of the reference document, and the expiration date registration control unit reads the expiration date information of the reference document based on the analysis result of the expiration date analysis unit. The information is stored in the expiration date storage unit in association with the link information to the document. The term document processing unit updates the link information in the reference source document and backs up the reference destination document to the backup document storage unit based on the link information and the expiration date information stored in the expiration date storage unit. I do. For example, if the operation type included in the expiration date information stored in the expiration date storage unit in association with the link information is delete or update, the expiration date document processing means The reference document indicated by the link information is backed up to the backup document storage means, and the link information in the reference source document is changed to point to the reference document backed up to the backup document storage means. At this point, the link information in the reference source document is changed to information indicating the destination of the reference destination document.
[0010]
Further, the distributed information securing device of the present invention reduces the load on the second computer.
A first computer, a second computer, and a third computer are connected via a computer network;
The first computer comprises:
Electronic document storage means for storing the referenced document;
Expiration date and when it expiresFor the referenced documentDoneIndicates whether the operation is a delete, move, or updateExpiration date setting means for setting expiration date information including an operation type in the reference destination document,
The second computer comprises:
Electronic document storage means for storing a reference source document including link information to the reference destination document,
Reference document acquisition means for acquiring a reference destination document referred to by the reference source document based on link information,
Expiration date analysis means for detecting expiration date information set in the reference destination document acquired by the reference document acquisition means;
An expiration date registration control unit that stores the expiration date information of the reference destination document in the expiration date storage unit in association with the link information to the reference destination document based on the analysis result of the expiration date analysis unit;
If the operation type included in the expiration date information stored in the expiration date storage unit in association with the link information to the reference destination document is delete or update, the link is set at a time earlier than the expiration date. It instructs to secure the referenced document indicated by the information by the third computer, and changes the link information in the referring source document to one that indicates the referenced document secured by the third computer. In some cases, when the expiration date has passed, the link information in the reference source document is changed to indicate the destination of the reference destination document.Expiration date document processing means;
Securing request generating means for requesting the third computer to secure a reference destination document in response to an instruction from the time limit document processing means,
The third computer comprises:
Securing request receiving means for receiving a securing request from the second computer;
A reference document acquisition unit that acquires a reference document from the first computer in accordance with the request received by the reservation request reception unit and stores the reference document in the backup document storage unit.
[0011]
In this configuration, the third computer performs acquisition and backup of the reference destination document in place of the second computer, so that the load on the second computer can be reduced.
[0012]
Further, the distributed information securing business system of the present invention achieves the above object and enables the management computer of the request source computer to charge the management cost of the referenced document backed up by a request from another computer.
A first computer, a second computer, and a third computer are connected via a computer network;
The first computer comprises:
Electronic document storage means for storing the referenced document;
An expiration date and expiration date setting means for setting expiration date information including an operation type to be performed when the expiration date has expired in the reference destination document.
The second computer comprises:
Electronic document storage means for storing a reference source document including link information to the reference destination document,
Reference document acquisition means for acquiring a reference destination document referred to by the reference source document based on link information,
Expiration date analysis means for detecting expiration date information set in the reference destination document acquired by the reference document acquisition means;
An expiration date registration control unit that stores the expiration date information of the reference destination document in the expiration date storage unit in association with the link information to the reference destination document based on the analysis result of the expiration date analysis unit;
Based on the link information and the expiration date information stored in the expiration date storage means, a reference document to be secured by the third computer is indicated, and link information indicating the reference destination document in the reference source document is provided. Term document processing means for changing the third computer to point to the reference destination document after being secured,
Securing request generating means for requesting the third computer to secure a referenced document in response to an instruction from the time limit document processing means;
Claim receiving means for receiving management cost claim information transmitted from the third computer,
The third computer comprises:
Securing request receiving means for receiving a securing request from the second computer;
Reference document acquisition means for acquiring a reference document from the first computer in accordance with the request received by the reservation request acceptance means and storing the same in a backup document storage means;
The reference document acquiring means includes a cost settlement means for transmitting management fee billing information for the reference destination document stored in the backup document storage means to the second computer.
[0013]
In this configuration, the third computer charges the second computer for the management cost of the referenced document acquired and backed up by the securing request from the second computer.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings.
[0015]
FIG. 1 is a block diagram showing one configuration example of the first embodiment of the shared information securing device according to the present invention. The shared information securing device according to the embodiment of the present invention includes a first computer 200 and a second computer 300, which are connected via a computer network 100.
[0016]
The first computer 200 includes an electronic document storage unit 210 that stores a reference destination document 211 and an expiration date setting unit 220 that sets expiration date information 212 in the reference destination document 211. The expiration date information 212 includes an expiration date of the reference destination document 211 and an operation indicating whether the type of operation performed on the reference destination document 211 when the expiration date has expired is one of deletion, movement, and update. Type is included.
[0017]
The recording medium K200 provided in the first computer 200 is a disk, a semiconductor memory, or another recording medium, in which a program for causing the computer 200 to function as the expiration date setting means 220 is recorded. This program is read by the computer 200 and controls the operation of the computer 200 to realize the expiration date setting means 220 on the computer 200.
[0018]
The second computer 300 stores the electronic document storage unit 310 storing the reference source document 311 including the link information 312 to the reference destination document 211, and the reference destination document 211 referenced by the reference source document 311 based on the link information 312. Reference document acquisition means 320, expiration date analysis means 330 for detecting expiration date information 212 set in the acquired reference destination document 211, and expiration date information 212 based on the analysis result of expiration date analysis means 330. Expiration date registration control means 340 for associating the expiration date information 212 with the link information 312 to the reference document 211, expiration date storage means 360 for storing the associated expiration date information 212 and link information 312 in association with each other, Based on the expiration date information and the link information stored in the storage unit 360, Back up the document 211 to the backup document storage unit 370, configured to include a time limit document treatment unit 350 for performing processing such as changes to show documents backed link information 312.
[0019]
The recording medium K300 included in the second computer 300 is a disk, a semiconductor memory, or another recording medium. The computer 300 is referred to as a reference document acquisition unit 320, an expiration date analysis unit 330, an expiration date registration control unit 340, an expiration date document. A program for functioning as the treatment means 350 is recorded. This program is read by the computer 300, and controls the operation of the computer 300, thereby realizing the reference document acquisition unit 320, the expiration date analysis unit 330, the expiration date registration control unit 340, and the expiration date document processing unit 350 on the computer 300. I do.
[0020]
For example, the computer network 100 is the Internet, the first computer 200 is a Web server that transmits WWW information, and is referred to by the name of “www.nameshishiki.com”, and the reference destination document 211 is in the HTML format. It is assumed that the Web page is a written Web page and is referred to by the name of “/souji.html”. For example, if this reference destination document 211 expires at 23:59 on December 31, 1999, and this page is scheduled to be deleted, the expiration date setting means 220 sends an instruction by the creator. , The expiration date information 212 of “<metaname =“ expiration ”date =“ 1999/12/31 23:59:00 ”action =“ delete ”>” is inserted into the reference destination document 211. FIG. 2 is an example of the reference destination document 211 into which the expiration date information 212 has been inserted.
[0021]
It is also assumed that the reference source document 311 held in the electronic document storage unit 310 of the second computer 300 is also a Web page written in the HTML format, and as shown in FIG. 3, “<a href =“ http: // / Www. mamechishiki. com / souji. html ">", the link information 312 referring to the reference destination document 211 existing on the first computer 200 is described.
[0022]
Next, the operation of the present embodiment will be described. Now, when the reference destination document 211 and the reference source document 311 are as shown in FIG. 2 and FIG. 3, respectively, the user or the administrator of the computer 300 can use the reference source document displayed on the display device (not shown). It is assumed that the link information 312 is input to the reference document acquisition unit 320 by clicking the link information 312 in 311.
[0023]
When the link information 312 is input, the reference document acquisition unit 320 checks whether or not the description includes “backup” (A1 in FIG. 4). In the case of this example, since the link information 312 does not include “backup” as shown in FIG. 3 (A1 is NO), the reference document acquiring unit 320 transmits the reference destination document 211 from the computer 200 based on the link information 312. It is acquired and presented to the user by displaying it on a display device (A2, A3). Thereafter, the reference document acquisition unit 320 passes the reference destination document 211 and the link information 312 to the expiration date analysis unit 330, and passes the document ID of the reference source document 311 in which the link information 312 is set to the expiration date analysis unit 330. (A4).
[0024]
The expiration date analyzing means 330 analyzes the received reference destination document 211 to detect the expiration date information 212, and outputs the date and time of the expiration date of "23:59 on December 31, 1999" and "delete (delete). )), The operation types to be performed on the reference destination document 211 when the expiration date has arrived, and those, the link information 312 and the document ID of the reference source document 311 are passed to the expiration date registration control means 340. The expiration date registration control unit 340 includes the expiration date and time “23:59 on December 31, 1999” passed from the expiration date analysis unit 330, the operation type “delete”, the link information 312, The document ID of the reference source document 311 is stored as a set in the expiration date storage unit 360.
[0025]
The term document processing means 350 performs the processing shown in the flowchart of FIG. 5 with the set of the expiration date, the operation type, the link information, and the document ID stored in the expiration date storage means 360 constantly or periodically. .
[0026]
For example, suppose that a set of the above-mentioned expiration date “23:59 on December 31, 1999”, operation type “delete”, link information 312, and document ID of reference source document 311 is to be processed. The term document processing means 350 performs the following processing.
[0027]
The term document processing means 350 first checks the operation type (FIG. 5, B1, B3). In the case of this example, the operation type is “delete”, and the determination result of B1 is YES, so the term document processing unit 350 performs the backup process of B2.
[0028]
In the backup process of B2, the following process is performed. First, the reference document 211 pointed by the link information 312 is acquired from the computer 200 using the reference document acquisition unit 320, and is backed up to the backup document storage unit 370. Thereafter, the term document processing unit 350 updates the link information 312 included in the reference source document 311 indicated by the document ID so as to indicate the reference document that has been backed up. For example, assuming that the reference destination document 211 is stored in the backup document storage unit 370 as “/backup/namechishi/souji.html”, the term document processing unit 350 sets the link information 312 to “<a href =“ / backup / namechishi / souji. html ">". FIG. 6 shows an example of the reference source document 311 after the link information 312 has been rewritten. After that, the term document processing unit 350 deletes the set to be processed this time from the expiration date storage unit 360. In this example, the backup process of B2 is performed immediately after the determination result of B1 is YES, but the backup process of B2 may be performed at any time before the expiration date. . For example, after the determination result of B1 is YES, the difference between the expiration date and the current date and time is obtained, and if the difference is equal to or less than a predetermined value, the backup process of B2 is performed; The process may be terminated.
[0029]
After the link information 312 is rewritten as shown in FIG. 6, the reference document acquisition unit 320 acquires the reference destination document not from the computer 200 but from the backup document storage unit 370. That is, when the acquisition of the reference destination document indicated by the link information 312 in FIG. 6 is requested, the reference destination document acquisition unit 320 includes the description “backup”. The corresponding reference destination document is acquired and presented to the user (FIG. 4, A1 is YES, A5, A6).
[0030]
Next, the description of the expiration date information 212 of the reference destination document 211 is described as “<meta name =“ expiration ”date =“ 1999/12/31 23:59:00 ”action =“ move ”destination =” / old / souji . html ">", the link information 312 in the reference source document 311 shown in FIG. 3 indicates that the document is "move" to the location "/old/souji.html" after the expiration date. The operation when the acquisition of the reference destination document is requested will be described.
[0031]
When the link information 312 shown in FIG. 3 is input by a user's click operation or the like, the reference document acquisition unit 320 acquires the reference destination document 211 from the computer 200 because the link information 312 does not include “backup”. This is displayed on the display device (FIG. 4, A1 to A3). Thereafter, the reference destination document 211, the link information 312 shown in FIG. 3, and the document ID of the reference source document 311 in which the link information 312 is set are passed to the expiration date analysis unit 330 (A4).
[0032]
As a result, the expiration date analysis means 330 and the expiration date registration control means 340 perform the same processing as described above, and the expiration date is stored in the expiration date storage means 360 at 23:59 on December 31, 1999. , The operation type “move (including destination)”, the link information 312, and the document ID of the reference source document 311 are stored in the expiration date storage unit 360.
[0033]
When the set of information stored in the expiration date storage means 360 is set as a processing target, the operation type is “move” (FIG. 5, B3 is YES). Is registered in a transfer list (not shown), and the set of information described above is deleted from the expiration date storage means 360 (B4). The expiration date document processing means 350 constantly monitors the contents of the transfer list, and when the expiration date is “23:59 on December 31, 1999 AD”, the document ID is not backed up without backing up the referenced document. The link information 312 in the reference source document 311 indicated by “<a href =“ http: // www. mamechishiki. com / old / souji. html ">".
[0034]
Next, the description of the expiration date information 212 of the reference destination document 211 is, for example, “<meta name =“ expiration ”date =“ 1999/12/31 23:59:00 ”action =“ update ”>”. If the content of “/soji.html” indicates “updated” after the expiration of the time limit, the acquisition of the reference destination document linked to the link information 312 in the reference source document 311 shown in FIG. 3 has been requested. The operation in this case will be described.
[0035]
When the link information 312 shown in FIG. 3 is input by a user's click operation, the reference document acquisition unit 320 performs the processing of A1 to A4 in FIG. 4 to obtain the reference destination document 211, the link information 312, and the reference source document 311. Is passed to the expiration date analysis means 330. As a result, the expiration date analysis means 330 and the expiration date registration control means 340 perform the same processing as described above, and the expiration date is stored in the expiration date storage means 360 at 23:59 on December 31, 1999. , The operation type “update”, the link information 312, and the document ID of the reference source document 311 are stored in the expiration date storage unit 360.
[0036]
When the set of the information stored in the expiration date storage unit 360 is to be processed, the term type document processing unit 350 indicates that the operation type is “update” (FIG. 5, B3 is NO). It is checked whether or not the link information 312 includes a description designating the action (B5, B7, B9 in FIG. 5). In the present embodiment, the description specifying the action refers to only “update =“ list ”” specifying that the links to the reference documents before and after the update are enumerated, and refers only to the reference documents before the update. And “update =“ update ””, which specifies only the updated reference destination, and “update =“ update ”” that specifies only the updated reference destination.
[0037]
In the case of this example, as shown in FIG. 3, since the link information 312 does not include a description designating the action (B9 is NO), the term document processing means 350 backs up the reference destination document 211, The link information 312 is set to “<a href =“ / backup / namechishiki / souji. The same processing as the backup processing performed in B2, such as rewriting to html ">", is performed (B10). Thereafter, when acquiring the reference destination document based on the rewritten link information 312, the reference document acquisition unit 320 acquires the document stored in the backup document storage unit 370 instead of the first computer 200. .
[0038]
Next, the description of the expiration date information 212 of the reference destination document 211 is, for example, “<meta name =“ expiration ”date =“ 1999/12/31 23:59:00 ”action =“ update ”>”. If the content of “/souji.html” is to be “updated” after the expiration date, the acquisition of the reference destination document indicated by the link information 312 in the reference source document 311 shown in FIG. 7 is requested. The operation in the case of the above is described. The link information 312 shown in FIG. 7 includes a parameter “update” that specifies an action at the time of updating, and a parameter that specifies a list of links to reference documents before and after the update in the parameter “update” that specifies an action at the time of updating. The value "list" is specified.
[0039]
When the link information 312 shown in FIG. 7 is input by a user's click operation or the like, the reference document acquisition unit 320, the expiration date analysis unit 330, and the expiration date registration control unit 340 perform the same processing as described above, and A set of the term “23:59 on December 31, 1999”, the operation type “update”, the link information 312, and the document ID of the reference source document 311 is stored in the expiration date storage unit 360.
[0040]
When the set of information is set as a processing target, the term document processing unit 350 determines that the operation type is “change” and that the link information 312 includes the designation “update =“ list ”” of the process (FIG. 5). , B3 is NO, and B9 is YES), the information set is registered in an update list (not shown) and deleted from the expiration date storage means 360 (B11).
[0041]
The term document processing means 350 constantly monitors the update list, and performs the following processing when detecting a pair immediately before the expiration date. Now, for example, when the above set is detected as a set immediately before the expiration date, the link information 312 in the reference source document 311 is determined based on the document ID of the reference source document 311 and the link information 312 included in the set. It is checked whether or not there is link information including a description of “backup” immediately after “. If the document does not exist, the reference document indicated by the link information 312 is obtained from the first computer 200 and backed up in the backup document storage unit 370, and both the updated reference document and the backed-up reference document are stored. As shown in FIG. 8, the link information 313 “<a href =“ / backup / namechishiki / souji. html ">" is added. At this time, as illustrated in FIG. 8, the reference source document may be modified by adding a character string “backup”, an update date and time, or the like so that each reference destination document can be distinguished. On the other hand, if link information including the description “backup” already exists immediately after the link information 312, the reference destination document linked by the link information 312 is already stored at the position indicated by the link information. To be added to the document being stored. Then, the set of information set as the processing target is deleted from the update list. Further, when there is a set of information having the same content as the above set of information in the update list, they are also deleted from the update list in order to prevent the same document from being backed up.
[0042]
Next, as a process when the reference destination document 211 is updated, link information 312 including a description “update =“ backup ”” designating that only the document before update is referred to “<a href =“ http: // ” / Www. mamechishiki. com / souji. The operation when the acquisition of the reference destination document 211 is requested by html “update =“ backup ”>” will be described.
[0043]
When the link information 312 is input by a user's click operation or the like, the reference document acquisition unit 320, the expiration date analysis unit 330, and the expiration date registration control unit 340 perform the same processing as described above, and The combination of the type “update”, the link information 312, and the document ID of the reference source document 311 is stored in the expiration date storage unit 360.
[0044]
When the above-mentioned information set stored in the expiration date storage means 360 is to be processed, the expiration date document processing means 350 indicates that the operation type is "update" and the specification of the action at the time of update is "backup". (FIG. 5, B3 is NO, B5 is YES), the reference document 211 before the update is backed up, and “<a href =“ / ”is set so that the link information 312 in the reference source document 311 refers to the backup document. backup / namechishiki / souji. html ">" or the like (B6).
[0045]
Next, as a measure when the reference destination document 211 is updated, link information 312 including a description “update =“ update ”” specifying that only the updated document is referred to “<a href =“ http: // ” / Www. mamechishiki. com / souji. The operation when the acquisition of the reference destination document 211 is requested by html “update =“ update ”>” will be described.
[0046]
When the link information 312 is input by a user's click operation or the like, the reference document acquisition unit 320, the expiration date analysis unit 330, and the expiration date registration control unit 340 perform the same processing as described above, and The combination of the type “update”, the link information 312, and the document ID of the reference source document 311 is stored in the expiration date storage unit 360.
[0047]
When the above-mentioned information set stored in the expiration date storage means 360 is to be processed, the expiration date document processing means 350 indicates that the operation type is "update" and the specification of the action at the time of update is "update". (FIG. 5, B3 is NO, B7 is YES), only the process of deleting the above-mentioned information set from the expiration date storage means 360 is performed without creating a backup document and updating the link information 312 (B8).
[0048]
FIG. 9 is a block diagram showing a configuration example of the second embodiment of the shared information securing device according to the present invention.
[0049]
The shared information securing device according to the present embodiment includes a first computer 200, a second computer 300a, a third computer 400, and a computer network 100 connecting them.
[0050]
The first computer 200 according to the present embodiment has the same configuration as the first computer 200 according to the first embodiment shown in FIG.
[0051]
The second computer 300a according to the present embodiment includes a term document processing unit 351 instead of the term document processing unit 350, a point that a secure request generation unit 380 is added, and a backup document storage unit 370. The second embodiment is different from the second computer 300 in the first embodiment shown in FIG.
[0052]
In B2, B6, and B10 in FIG. 5, the expiration date document processing unit 351 generates a request for securing the link information 312 included in the set of information to be processed and the name given to the backed-up reference destination document. After the notification to the means 380, the link information 312 in the reference source document 311 is rewritten to indicate the reference document that has been backed up, and the processing of deleting the set of information to be processed from the expiration date storage means 360 is performed. This differs from the term document processing unit 350 shown in FIG. Further, when detecting the set of information immediately before the expiration date has expired in the update list, the term document processing unit 351 requests the link information included in the set and the name given to the backed-up reference document to be secured. After notifying the generating means 380, link information indicating the backed-up reference document is added to the reference source document 311, and a process of deleting the set of information to be processed from the update list is performed. This is different from the term document processing means 350 shown in FIG.
[0053]
The reservation request generation unit 380 is a function of notifying the third computer 400 via the computer network 100 of a reservation request including the link information 312 notified from the term document processing unit 351 and the name given to the backed-up reference document. Having.
[0054]
The recording medium K300a provided in the second computer 300a is a disk, a semiconductor memory, or another recording medium. The computer 300a is referred to as a reference document acquisition unit 320, an expiration date analysis unit 330, an expiration date registration control unit. 340, a program for functioning as the term document processing means 351 and the securing request generating means 380 are recorded. This program is read by the computer 300a, and by controlling the operation of the computer 300a, the reference document acquisition unit 320, the expiration date analysis unit 330, the expiration date registration control unit 340, the expiration date document processing unit are stored on the computer 300a. 351 implements the securing request generation means 380.
[0055]
The third computer 400 includes a secure request receiving unit 420 that receives a secure request from the second computer 300 a, a reference document 211 from the first computer 200 in accordance with the received request, and a backup document storage unit 410. And a backup document storage unit 410 that holds the reference destination document acquired by the reference document acquisition unit 430.
[0056]
The recording medium K400 included in the third computer 400 is a disk, a semiconductor memory, or another recording medium, in which a program for causing the computer 400 to function as the securing request receiving unit 420 and the reference document acquiring unit 430 is recorded. I have. This program is read by the computer 400 and controls the operation of the computer 400 to realize the secure request receiving unit 420 and the reference document obtaining unit 430 on the computer 400.
[0057]
For example, the computer network 100 is the Internet, the first computer 200 is a Web server that transmits WWW information, and is referred to by the name of “www.nameshishiki.com”, and the reference destination document 211 is in the HTML format. It is assumed that the Web page is a written Web page and is referred to by the name of “/souji.html”. For example, if this reference source document 211 expires at 23:59 on December 31, 1999, and this page is scheduled to be deleted, the expiration date setting means 220 sends an instruction from the creator. , The expiration date information 212 of “<metaname =“ expiration ”date =“ 1999/12/31 23:59:00 ”action =“ delete ”>” is inserted into the reference destination document 211. FIG. 2 is an example of the reference destination document 211 into which the expiration date information 212 has been inserted.
[0058]
It is also assumed that the reference source document 311 held in the electronic document storage unit 310 of the second computer 300a is also a Web page written in the HTML format, and as shown in FIG. 3, "<a href =" http: // www. mamechishiki. com / souji. html ">" is described including link information 312 referring to the reference destination document 211 existing on the first computer.
[0059]
When the link information 312 in the reference source document 311 shown in FIG. 3 is input by a user's click operation or the like, the reference document acquisition means 320 refers to the reference document from the first computer 200 as shown in the flowchart of FIG. The destination document 211 is obtained and presented to the user (A1 to A3). Further, the reference document acquiring unit 320 notifies the expiration date analyzing unit 330 of the reference destination document 211, the link information 312, and the document ID of the reference source document 311 including the link information 312 (A4).
[0060]
As a result, the expiration date analyzing means 330 analyzes the received reference destination document 211 to detect the expiration date information 212, and outputs the date and time of the expiration date of “23:59 on December 31, 1999 AD” and the “deletion date”. And the type of operation to be performed on the reference destination document 211 at the expiration date of "." At this time, the link information 312 and the document ID of the reference source document 311 are also passed to the expiration date registration control unit 340. The expiration date registration control unit 340 sets the link information 312, the document ID of the reference source document 311, the expiration date “23:59 on December 31, 1999”, and the operation type “delete”. Stored in the expiration date storage means 360.
[0061]
When the set of information stored in the expiration date storage means 360 is to be processed, the operation type is "delete" (FIG. 5, B1 is YES). Do.
[0062]
In the backup process of B2, the following process is performed. First, the link information 312 included in the above set of information and the name given to the backed-up reference destination document 211 are passed to the reservation request generating means 380. Next, the link information 312 in the reference source document 311 is changed to one that indicates the reference document that has been backed up. Finally, the set of information described above is deleted from the expiration date storage means 360. Now, for example, assuming that the name of the third computer 400 is “www.backup.com” and the name of the backed-up reference destination document 211 is “/namechishiki/souji.html”, the term document processing means 351 Sets the link information 312 to "<a href =" http: // www. backup. com / namechishiki / souji. html ">". FIG. 10 is an example of the reference source document 311 after rewriting. Thereafter, when the reference document acquiring unit 320 acquires a reference destination document based on the rewritten link information 312, the reference document stored in the backup document storage unit 410 of the third computer 400 instead of the first computer 200. Get the destination document.
[0063]
When the link information 312 and the name given to the reference destination document 211 to be backed up are passed from the term document processing unit 351, the reservation request generation unit 380 notifies the third computer 400 of a reservation request including them.
[0064]
The third computer 400 receives the reservation request from the second computer 300a by the reservation request receiving unit 420, and converts the reference destination document 211 indicated by the link information 312 in the reservation request by the reference document acquisition unit 430 into the first document. It is acquired from the computer 200 and backed up to the backup document storage unit 410 as the secured reference destination document 411. At this time, the name of the secure reference destination document 411 is the name included in the secure request. Further, the reference document acquisition unit 430 rewrites the expiration date information included in the secure reference destination document 411 into the retention date information 412 based on the conditions concluded between the reservation request generating unit 380 and the reservation request receiving unit 420. FIG. 11 shows an example of the secured reference destination document 411 after rewriting when the retention time limit is “23:59 on December 31, 2004”.
[0065]
FIG. 12 is a block diagram showing a configuration example of an embodiment of a distributed information securing business system according to the present invention, in which a first computer 200, a second computer 300b, a third computer 400a, And a computer network 100 for connecting them.
[0066]
The first computer 200 of the present embodiment has the same configuration as the first computer 200 shown in FIG.
[0067]
The second computer 300b of the present embodiment is different from the second computer 300a shown in FIG. 9 in that the second computer 300b includes a bill accepting unit 390. The bill accepting unit 390 has a function of receiving the bill including the bill amount and the like sent from the third computer 400a and outputting the bill to an output device (not shown) such as a printer or a display device. The recording medium K300b included in the computer 300b is a disk, a semiconductor memory, or another recording medium. The computer 300b is referred to as a reference document acquisition unit 320, an expiration date analysis unit 330, an expiration date registration control unit 340, A program for functioning as the document processing unit 351, the securing request generating unit 380, and the request receiving unit 390 is recorded. This program is read by the computer 300b, and by controlling the operation of the computer 300b, the reference document acquisition unit 320, the expiration date analysis unit 330, the expiration date registration control unit 340, the expiration date document processing are stored on the computer 300b. The means 351, the securing request generating means 380, and the claim receiving means 390 are realized.
[0068]
The third computer 400a according to the present embodiment is provided with an expense settlement unit 440 and secure request accepting unit 421 and reference document acquiring unit 431 instead of the secure request receiving unit 420 and the reference document acquiring unit 430, respectively. The third embodiment is different from the third computer 400 in FIG.
[0069]
The reservation request receiving unit 421 has a function of notifying the expense settlement unit 440 of the content of the received reservation request, in addition to the function of the reservation request receiving unit 420. The reference document acquisition unit 431 has a function of notifying the cost settlement unit 440 of the size and retention period of the secured reference destination document 411 backed up in the backup document storage unit 410, in addition to the function of the reference document acquisition unit 430. . The cost settlement means 440 includes a function for calculating a billing amount based on the size and the holding period notified from the reference document acquiring means 431, the above-mentioned billing amount, the contents of the securing request notified from the securing request receiving means 421, and the like. It has a function of transmitting the cost bill including the fee to the second computer 300b.
[0070]
The recording medium K400a provided in the third computer 400a is a disk, a semiconductor memory, or another recording medium, and functions as the securing request receiving means 421, the reference document acquiring means 431, and the cost settlement means 440. A program for causing the program to be executed is recorded. This program is read by the computer 400a and controls the operation of the computer 400a, thereby realizing the securing request receiving unit 421, the reference document acquiring unit 431, and the cost settlement unit 440 on the computer 400a.
[0071]
Upon receiving the securing request from the second computer 300b, the securing request receiving unit 421 in the third computer 400a notifies the contents to the reference document acquiring unit 431 and the cost settlement unit 440. The reference document acquisition unit 431 acquires the reference destination document 211 requested by the reservation request from the first computer 200, stores it in the backup document storage unit 410 as the reservation reference destination document 411, and stores the size and the retention thereof. The expiration date is notified to the expense settlement means 440. The cost settlement means 440 calculates a billing amount based on the size and the retention period, and transmits the cost claim including the calculated billing amount and the contents of the security request notified from the security request receiving means 421 to the second computer 300b. Send to
[0072]
Upon receipt of the cost request from the third computer 400a, the claim receiving means 390 in the second computer 300b outputs the cost request to an output device such as a printer or a display device, thereby allowing the administrator to charge the cost request. Present. Thereby, the administrator pays the charged cost. Also, the charge receiving means 390 may be provided with a function of paying the cost electronically to the cost settlement means 440, and when the cost is paid from the cost settlement means 440, the cost may be paid electronically. good.
[0073]
In addition, as shown in FIG. 13, the settlement of the expense may be performed through a settlement institution 500 connected to the computer network 100 and separate from the second computer 300b and the third computer 400a. In this case, the bill accepting means 390 of the second computer 300b and the cost settlement means 440 of the third computer 400a perform settlement processing to the settlement institution 500.
[0074]
【The invention's effect】
According to the present invention, in the reference between electronic documents distributed on the computer network, before the information of the reference destination is updated, the reference source knows the update time and the update content, and the reference destination data is changed. It is possible to provide a shared information securing device that can maintain appropriate reference even when the data is moved or deleted.
[0075]
Further, it is not always necessary to secure the reference destination document on the referrer computer, and the shared information is secured in the third computer, and the shared information is secured by referencing it. It is possible to provide a distributed information securing business system based on the securing device.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration example of a first embodiment of a shared information securing device according to the present invention.
FIG. 2 is a diagram showing an example of a reference destination document 211.
FIG. 3 is a diagram illustrating an example of a reference source document 311.
FIG. 4 is a flowchart showing a processing example of a reference document acquisition unit 320;
FIG. 5 is a flowchart showing a processing example of a term document processing means 350;
FIG. 6 is a diagram showing an example of a reference source document 311 in which link information has been rewritten so as to point to a backed-up reference destination document.
FIG. 7 is a diagram illustrating an example of a reference source document 311 including a description of a process when a reference destination document is updated.
FIG. 8 is a diagram showing an example of a reference source document 311 after link information has been added so that both the backup reference document before update and the new reference document after update can be referenced.
FIG. 9 is a block diagram illustrating a configuration example of a second embodiment of the shared information securing device according to the present invention.
FIG. 10 is a diagram illustrating an example of a reference source document in which link information has been rewritten to point to a secured reference destination document secured in a third computer.
FIG. 11 is a diagram illustrating an example of a secured reference destination document 411.
FIG. 12 is a block diagram showing a configuration example of an embodiment of a distributed information securing business system according to the present invention.
FIG. 13 is a block diagram showing a configuration example of a distributed information securing business system including a settlement institution other than the second and third computers shown in FIG. 12;
[Explanation of symbols]
100 Computer network
200: first computer
210 ... electronic document storage means
211: Referenced document
212: Expiration date information
220 ... expiration date setting means
300, 300a, 300b ... second computer
310 Electronic document storage means
311: Reference source document
312 ... Link information
313 ... Link information
320: Reference document acquisition means
330: expiration date analysis means
340: expiration date registration control means
350: Term document processing means
351... Expiration date document processing means
360: expiration date storage means
370: Backup document storage means of the second computer
380 ... Securing request generation means
390 ... Request receiving means of the second computer
400, 400a ... third computer
410: Backup document storage means of the third computer
411: Secured reference destination document
412: Retention period information
420 ... Securing request receiving means
430: Reference document acquisition means
440: Expense settlement means of the third computer
K200, K300, K300a, K300b, K400, K400a ... recording medium
500… Payment organization

Claims (6)

A first computer and a second computer are connected via a computer network,
The first computer comprises:
Electronic document storage means for storing the referenced document;
An expiration date and an expiration date information including an operation type indicating whether the operation performed on the referenced document at the time of expiration is deletion, movement, or updating is set in the referenced document. Term setting means,
The second computer comprises:
Electronic document storage means for storing a reference source document including link information to the reference destination document,
Reference document acquisition means for acquiring a reference destination document referred to by the reference source document based on link information,
Expiration date analysis means for detecting expiration date information set in the reference destination document acquired by the reference document acquisition means;
An expiration date registration control unit that stores the expiration date information of the referenced document in the expiration date storage unit in association with the link information to the referenced document based on the analysis result of the expiration date analysis unit;
If the operation type included in the expiration date information stored in the expiration date storage unit in association with the link information to the reference destination document is delete or update, the link is set at a time earlier than the expiration date. The reference document indicated by the information is backed up to the backup document storage means, and the link information in the reference source document is changed to indicate the reference document backed up in the backup document storage means. A distributed information securing apparatus, comprising: a term document processing unit for changing link information in a reference source document to information indicating a destination of the reference destination document at a time when the term has expired. A first computer, a second computer, and a third computer are connected via a computer network;
The first computer comprises:
Electronic document storage means for storing the referenced document;
An expiration date and expiration date information including an operation type indicating whether the operation to be performed on the referenced document when the expiration date has expired is deletion, movement, or updating is set in the referenced document. Term setting means,
The second computer comprises:
Electronic document storage means for storing a reference source document including link information to the reference destination document,
Reference document acquisition means for acquiring a reference destination document referred to by the reference source document based on link information,
Expiration date analysis means for detecting expiration date information set in the reference destination document acquired by the reference document acquisition means;
An expiration date registration control unit that stores the expiration date information of the reference destination document in the expiration date storage unit in association with the link information to the reference destination document based on the analysis result of the expiration date analysis unit;
If the operation type included in the expiration date information stored in the expiration date storage unit in association with the link information to the reference destination document is delete or update, the link is set at a time earlier than the expiration date. It instructs to secure the referenced document indicated by the information by the third computer, and changes the link information in the referring source document to one that indicates the referenced document secured by the third computer. In some cases, when the expiration date has passed, the term information processing means for changing the link information in the reference source document to one that indicates the destination of the reference destination document ,
Securing request generating means for requesting the third computer to secure a reference destination document in response to an instruction from the time limit document processing means,
The third computer comprises:
Securing request receiving means for receiving a securing request from the second computer;
And a reference document acquisition unit for acquiring a reference document from the first computer in accordance with the request received by the reservation request reception unit and storing the reference document in a backup document storage unit. . A first computer, a second computer, and a third computer are connected via a computer network;
The first computer comprises:
Electronic document storage means for storing the referenced document;
An expiration date and expiration date setting means for setting expiration date information including an operation type to be performed when the expiration date has expired in the reference destination document.
The second computer comprises:
Electronic document storage means for storing a reference source document including link information to the reference destination document,
Reference document acquisition means for acquiring a reference destination document referred to by the reference source document based on link information,
Expiration date analysis means for detecting expiration date information set in the reference destination document acquired by the reference document acquisition means;
An expiration date registration control unit that stores the expiration date information of the reference destination document in the expiration date storage unit in association with the link information to the reference destination document based on the analysis result of the expiration date analysis unit;
Based on the link information and the expiration date information stored in the expiration date storage means, a reference document to be secured by the third computer is indicated, and link information indicating the reference destination document in the reference source document is provided. Term document processing means for changing the third computer to point to the reference destination document after being secured,
Securing request generating means for requesting the third computer to secure a referenced document in response to an instruction from the time limit document processing means;
Claim receiving means for receiving management cost claim information transmitted from the third computer,
The third computer comprises:
Securing request receiving means for receiving a securing request from the second computer;
Reference document acquisition means for acquiring a reference document from the first computer in accordance with the request received by the reservation request acceptance means and storing the same in a backup document storage means;
Wherein the reference document acquisition means includes a cost settlement means for transmitting management cost billing information for the reference destination document stored in the backup document storage means to the second computer. Information security business system. A first computer connected to a second computer via a computer network,
The expiration date and expiration date information including an operation type indicating whether the operation performed on the referenced document when the expiration date has expired is one of deletion, movement, and update is stored in the electronic document storage means. Function as an expiration date setting means to be set in the referenced document,
The second computer,
Reference document acquisition means for acquiring, based on the link information, a reference destination document referred to by the reference source document including the link information stored in the electronic document storage means,
Expiration date analysis means for detecting expiration date information set in the reference destination document acquired by the reference document acquisition means,
An expiration date registration control unit that stores the expiration date information of the referenced document in the expiration date storage unit in association with the link information to the referenced document based on the analysis result of the expiration date analysis unit;
If the operation type included in the expiration date information stored in the expiration date storage unit in association with the link information to the reference destination document is delete or update, the link is set at a time earlier than the expiration date. The reference document indicated by the information is backed up to the backup document storage means, and the link information in the reference source document is changed to indicate the reference document backed up to the backup document storage means. A machine-readable recording medium recording a program for functioning as a term document processing means for changing link information in a reference source document to one indicating a destination of the reference destination document when a term has expired. A first computer connected to the second and third computers via a computer network,
The expiration date and expiration date information including an operation type indicating whether the operation performed on the referenced document when the expiration date has expired is one of deletion, movement, and update is stored in the electronic document storage means. Function as an expiration date setting means to be set in the referenced document,
The second computer,
Reference document acquisition means for acquiring, based on the link information, a reference destination document referred to by the reference source document including the link information stored in the electronic document storage means,
Expiration date analysis means for detecting expiration date information set in the reference destination document acquired by the reference document acquisition means;
An expiration date registration control unit that stores the expiration date information of the referenced document in the expiration date storage unit in association with the link information to the referenced document based on the analysis result of the expiration date analysis unit;
If the operation type included in the expiration date information stored in the expiration date storage unit in association with the link information to the reference destination document is delete or update, the link is set at a time earlier than the expiration date. It instructs to secure the referenced document indicated by the information by the third computer, and changes the link information in the referring source document to one that indicates the referenced document secured by the third computer. In some cases, when the expiration date has expired, the term information processing means for changing the link information in the reference source document to one that indicates the destination of the reference destination document ,
In response to an instruction from the time limit document processing means, the third computer is made to function as a secure request generating means for requesting securing of a reference destination document,
The third computer,
Securing request receiving means for receiving a securing request from the second computer;
A machine-readable recording medium storing a program for functioning as a reference document acquisition unit that acquires a reference destination document from the first computer in accordance with the request received by the reservation request reception unit and stores the reference destination document in a backup document storage unit. A first computer connected to the second and third computers via a computer network,
An expiration date and an expiration date information including an operation type to be performed when the expiration date is reached are set to function as an expiration date setting unit for setting a reference destination document stored in the electronic document storage unit,
The second computer,
Reference document acquisition means for acquiring, based on the link information, a reference destination document referred to by the reference source document including the link information stored in the electronic document storage means,
Expiration date analysis means for detecting expiration date information set in the reference destination document acquired by the reference document acquisition means;
An expiration date registration control unit that stores the expiration date information of the referenced document in the expiration date storage unit in association with the link information to the referenced document based on the analysis result of the expiration date analysis unit;
Based on the link information and the expiration date information stored in the expiration date storage means, a reference document to be secured by the third computer is indicated, and link information indicating the reference destination document in the reference source document is provided. Term processing means for changing the third computer to point to the reference destination document after being secured,
Securing request generating means for requesting the third computer to secure a reference document in response to an instruction from the time limit document processing means;
Functioning as a bill accepting unit for receiving billing information of the management cost transmitted from the third computer,
The third computer,
Securing request receiving means for receiving a securing request from the second computer;
A reference document acquisition unit for acquiring a reference document from the first computer in accordance with the request received by the reservation request reception unit and storing the reference document in the backup document storage unit;
A machine readable program storing a program for causing the reference document acquisition unit to function as an expense settlement unit for transmitting to the second computer billing information on management costs for the reference destination document stored in the backup document storage unit. recoding media.

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