JP2000268053A - Information sharing system, device and method for controlling access to information and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely acquire latest physical distribution(PD) information updated in a data base without waste for securing the real time property of PD information to be acquired. SOLUTION: This information sharing system is provided with a retrieval part 12 for retrieving a disclosed DB 11 repeatedly at every determined time interval and a time interval change part 16 for appropriately changing the time interval of retrieval. When the PD information provided by the retrieval of this time is not changed from the last time of retrieval, the time interval of retrieval is changed longer than present one, but when there is any change, the time interval is changed shorter than present one. Thus, the desired PD information is extracted by performing concentrated retrieval in a time zone, when the PD information in the disclosed DB 11 is frequently updated, but retrieval is not so much in a time zone when the PD information is not updated so much. Thus, even without knowing when the PD information is updated, the latest updated PD information can be acquired without being missed and useless retrieving processing is performed as little as possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an information sharing system,
An access control apparatus and method for information and a recording medium are suitable for use in, for example, a system in which a plurality of users share information on a network.

[0002]

2. Description of the Related Art Generally, distribution of a certain product from production to sale includes various routes such as a raw material manufacturer, a storage company, a component manufacturer, and a consumer. For example, in logistics in the steel industry, as shown in FIG. 4, a blast furnace maker that manufactures steel sheets, a warehouse company such as a service center that stores steel sheets, a coil center that cuts steel sheets into coils, and parts are manufactured using coils. There are parts manufacturers, consumers who manufacture and sell products using various parts, and the like.

Conventionally, in such a distribution system,
Information on iron logistics was usually obtained only between companies that had direct transactions. For example, the blast furnace maker A has only information that the steel plate is stored at the service center D, and does not know what happened to the steel plate thereafter. Further, Company D has only information that it has received a steel sheet from Company A and delivered it to Company H or Company I, which is a coil center. In other words, information about inputs and outputs to a certain company was managed only by that company.

[0004] In such a system, it is difficult for a certain company alone to accurately grasp the inventory of the entire iron market, and thus inconveniences have occurred in various situations. For example, if a blast furnace maker is planning to make a production plan for next month, how much iron of a certain standard is now in the market inventory,
In other words, it is necessary to determine whether there is a surplus or a shortage, and to make an appropriate production plan accordingly.

[0005] Further, for example, when a customer intends to ship a new product with a certain delivery date, as a material necessary for manufacturing the product, a standard that already exists on the market in time for the delivery date is used as a material. In some cases, it may be necessary to examine and use iron. In the past, however, business personnel at a certain company went directly to each company, from blast furnace manufacturers to customers, to investigate market inventory, and personnel at each company listened to their business partners in turn by telephone, etc. It was necessary to perform work such as summarizing the contents that were collected at the end, which was very troublesome.

On the other hand, communication systems such as the Internet, for example, have been widely used with the recent improvements in CPU processing capacity, large-capacity and digitization of communication information in networks, and the development of information compression technology. Under such circumstances, a system has been proposed that enables information on logistics possessed by each company to be shared on the Internet for the purpose of eliminating the above-mentioned inconveniences and improving productivity and efficiency. ing.

[0007] By constructing this information sharing system, it is possible to share information regarding the distribution of steel materials possessed by various companies from blast furnace manufacturers to customers. As a result, information on logistics created and managed by other companies can be easily and instantly obtained via the Internet, and, for example, the inventory status of the entire market can be easily grasped.

[0008]

In the information sharing system as described above, in order to accurately grasp the information in the system, for example, to check the stock status of the entire market, the contents of each company whose contents are updated sequentially are updated. It is extremely important to ensure the real-time property of always obtaining the latest information from the database.

[0009] However, it is not usually possible for the company requesting the search to know what process and how long the logistics work is being performed in another company by the process. Therefore, it is impossible to know when the contents of the database are updated based on such work. Depending on the industry, the contents of the database may be updated many times a day, but in order to obtain the updated information each time, the person in charge of the search requesting company must use the appropriate time. It had to be accessed many times at a time, which required a lot of effort.

As means for solving such inconvenience, for example, it is conceivable to automatically and sequentially transmit search requests at fixed time intervals. However,
The timing at which the database of each company is updated varies depending on various factors, such as the company that holds the database, the articles that are the target of distribution work, or the day or time zone in which the work is performed. Therefore, if the search is performed at regular time intervals, complete grasp of the distribution information cannot be achieved.

For example, if the time interval of search processing is long, distribution information may be updated several times even between two consecutive search processing, and important information may not be obtained. appear. Conversely, if the time interval of the search processing is short, the omission of acquisition of important information as described above is reduced, but the possibility of accessing the database whose content has not been updated at all is increased, and A state occurs in which the used computer resources are wasted.

The present invention has been made in view of such circumstances, and in a system for sharing information among a plurality of users, real-time information obtained from a database owned by each company is ensured. Therefore, an object of the present invention is to ensure that the latest information sequentially updated in the database of each company can be obtained without waste.

[0013]

An information sharing system according to the present invention is a system in which a plurality of users existing on a network share information stored in a storage means. And a time interval changing means for appropriately changing the time interval of the access repeatedly performed by the access means.

Here, the time interval changing means may appropriately change the access time interval according to the shared information which is repeatedly retrieved by the access means accessing the storage means. The information processing apparatus further includes comparison determination means for determining whether the shared information retrieved this time by the access means is the same as the shared information retrieved last time, wherein the time interval changing means determines a result of the determination by the comparison determination means. , The access time interval may be changed as appropriate. Further, the time interval changing means may determine that there is no change in the shared information obtained as a result of the continuous access by the access means.
.. Or m times (m = 2, 3,...), The access time interval is changed to be longer than the current time, and the change is made once or n times (n = 2 times). ,
(3,...)), The time interval of the access may be changed to be shorter than the current time when it occurs continuously.

In another aspect of the present invention, in a system in which a plurality of users existing on a network share information stored in a storage unit, access to desired information in the storage unit is determined. An access unit that is repeated every time interval, a comparison determination unit that determines whether the shared information extracted this time by the access unit is the same as the shared information extracted last time, and a result of the determination by the comparison determination unit And output control means for controlling whether or not to output the shared information extracted by the access means based on the above.

Here, the output control means controls to output the shared information retrieved this time only when the shared information retrieved this time by the access means differs from the shared information retrieved last time. You may do it.

According to another aspect of the present invention, in a system in which a plurality of users existing on a network share information stored in a storage unit, access to desired information in the storage unit is determined. An access unit that is repeated every time interval, a comparison determination unit that determines whether the shared information extracted this time by the access unit is the same as the shared information extracted last time, and a result of the determination by the comparison determination unit A time interval changing means for appropriately changing a time interval of an access repeatedly performed by the access means, and whether to output the shared information extracted by the access means based on a result of the judgment by the comparison judgment means. Output control means for controlling the operation.

Here, the access means, the comparison and determination means, the time interval changing means and the output control means are constituted as software modules capable of determining and executing what to process by themselves, and together with the access request via the Internet. It may be transmitted. Further, the access unit, the comparison determination unit, the time interval changing unit, and the output control unit may be provided in servers of the plurality of users connected to a network.

According to the present invention, there is provided an access control apparatus for controlling access to information in storage means, wherein the access control apparatus controls access to desired information in the storage means at predetermined time intervals. And a time interval changing means for appropriately changing a time interval of the access repeatedly performed by the access means.

According to another aspect of the present invention, there is provided an access control device for controlling access to information in a storage means, wherein the access to desired information in the storage means is repeatedly performed at predetermined time intervals. Means, comparison determination means for comparing and determining whether the information retrieved this time by the access means and the information retrieved last time are the same, and based on a result of the determination by the comparison determination means,
Output control means for controlling whether or not to output the information retrieved by the access means.

According to another aspect of the present invention, there is provided an access control device for controlling access to information in a storage unit, wherein the access control unit repeatedly accesses the desired information in the storage unit at predetermined time intervals. Means, comparing and judging means for judging whether or not the information taken out by the access means this time and the information taken out last time are the same. Once or m times (m
= 2, 3,...), The access time interval is changed to be longer than the current time, and the change is made once or n times (n = 2, 3,...) ?) The information retrieved this time by the access means is retrieved last time on the basis of the result of the determination by the time interval changing means for changing the time interval of the access to be shorter than the present time, and the comparison determination means when it occurs successively. Output control means for controlling to output the information extracted this time only when the information is different from the extracted information.

According to a second aspect of the present invention, there is provided an access control method for controlling access to information in a storage unit, wherein the access control to the desired information in the storage unit is performed at predetermined time intervals. An access step that is repeatedly performed, a comparison determination step that compares and determines whether the information retrieved this time and the information retrieved last time by the access step are the same, and A time interval changing step of appropriately changing an access time interval.

According to another aspect of the present invention, there is provided an access control method for controlling access to information in a storage means, wherein the access to desired information in the storage means is repeatedly performed at predetermined time intervals. A step of comparing and judging whether the information retrieved this time by the access step and the information retrieved last time are the same, and based on a result of the judgment in the comparison determination step, And an output control step of controlling whether to output the extracted information.

According to another aspect of the present invention, there is provided an access control method for controlling access to information in a storage means, wherein access to desired information in the storage means is repeatedly performed at predetermined time intervals. A step of comparing and judging whether the information retrieved this time by the access step and the information retrieved last time are the same, and a time interval of the access based on a result of the determination in the comparison determination step And an output control step of controlling whether to output the information extracted in the access step based on a result of the determination in the comparison determination step. And

Further, a computer-readable recording medium according to the present invention is characterized in that a program for causing a computer to function as each means according to any one of claims 1 to 17 is recorded. In another aspect of the invention,
A program for causing a computer to execute the processing procedure of the method for controlling access to information according to any one of claims 18 to 20 is recorded.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a functional block diagram showing the elementary features of the information access control apparatus according to the present invention. The access control device shown in FIG. 1 can be applied to an information sharing system. The information sharing system can be applied in any field as long as it is a system for sharing information among a plurality of users on a network. One example of such a system is shown in FIG. 2 below. Steel EC (Electronic Commerce)
: Electronic commerce) system will be described.

First, a schematic configuration of the steel EC system will be described with reference to FIG. Here, for convenience of the drawing, only the five companies A to E are connected to the Internet, but in the case of constructing an information sharing system for logistics as shown in FIG. Company P is also connected on the Internet. Note that ~ represents a search procedure.

In such a steel EC system,
It is necessary to disclose information on logistics owned by each company on the Internet. For this purpose, it is necessary for each participating company in the steel EC system to create logistics information to be disclosed regarding transactions relating to itself, and store them as databases (hereinafter, referred to as disclosure DBs) 11a to 11e. Each of the disclosure DBs 11a to 11e is constituted by a relational database in a table format, and one record stores distribution information on one transaction.

Each participating company has server machines 10a to 10e connected to the Internet in addition to the disclosure DBs 11a to 11e. An agent server is running on each of the server machines 10a to 10e. This agent server has the disclosure DBs 11a to 11a
In addition to the process of publishing the distribution information in e on the Internet, a process of encrypting a search request between companies and communication of the search result via the Internet (including a process of generating a search agent) and the like are performed.

On the other hand, as a user terminal, L
A plurality of client machines (such as personal computers) 1 to N connected by AN are used. Each of the client machines 1 to N is provided with a Web browser for inputting a search operation request from a user. The search operation request from the user is input via a Web browser running on the client. Passed to the agent server via the server. Each client machine 1-N
Also performs a process of displaying the final search result for the search job request on the display.

Next, the functional configuration and operation of the access control device shown in FIG. 1 will be described. In FIG. 1, a disclosure DB 11 organizes and stores information on physical distribution created by each company during a transaction, and corresponds to the disclosure DBs 11a to 11e shown in FIG. This disclosure DB1
1 is created by a business person in charge of each company entering logistics information and the like relating to transactions using an input device such as a keyboard and a mouse.

In accordance with the given search request, the search unit 12 searches the disclosure DB 11 for one that matches the search condition included in the search request, and outputs the search result as a search result. This search request is issued by a client machine of another company and sent from a server of the other company as a search agent via the Internet.

The search request handled in the present embodiment includes, in addition to the above search conditions including a desired search key, a rule (program) relating to search processing. As a rule,
A rule for repeatedly performing the search process at set time intervals and changing the setting of the time interval according to the search result, and further, performing a search process at predetermined time intervals under the same search conditions. It includes a rule for returning the search result to the search request source via the Internet only when the content of the information extracted from the DB 11 has changed from the previous time.

That is, the search unit 12 of the present embodiment
When one search request is given, the search process is performed once and the result is output, and it does not mean that the search process is completed. Instead, it is determined according to the rules (programs) included in the given search request. The search processing is repeatedly performed at every set time interval. At this time, whether it is time to perform the search process based on the determined time interval,
The determination is made based on a signal supplied from the time management unit 13 having a timer or the like for measuring the passage of time.

The result holding unit 14 holds the result of the search process performed by the search unit 12 at a certain timing, that is, the data retrieved from the disclosure DB 11 according to the search conditions. Further, the comparison determination unit 15 compares the search result at the previous timing stored in the result storage unit 14 with the search result at the current timing provided from the search unit 12, and both search results are the same data. Determine if there is. Then, a control signal corresponding to the determination result is output to the time interval changing unit 16.

The time interval changing section 16 is provided with the comparing / determining section 1
Based on the control signal supplied from 5, the search unit 12 changes the time interval when the search processing is repeatedly performed. For example, if the data obtained in the previous search result and the data obtained in the current search result are different from each other and it is found that the contents of the database have been updated, the time interval is changed by the predetermined time or by the predetermined ratio. Make it shorter than the setting. On the other hand, if it is found that the data obtained in the previous search result and the data obtained in the current search result do not change and the database has not been updated, the time interval is changed by a predetermined time or a predetermined ratio from the current setting. Also lengthen.

In the above example, if there is no change in the data obtained in two consecutive search results, the search time interval is immediately changed to a longer time. The time interval may be set to be longer only after the number of times (m = 2, 3,...) Has been continued. Similarly, in a case where there is a change in the data obtained by two consecutive search results, the time interval is immediately shortened in the above-described example when there is a change even once. May be shortened only when n times (n = 2, 3,...) Continue. In this case, the comparison / determination unit 15 includes a first counter 15a and a second counter 15b in order to count how many times the data has not changed or has been changed.

As described above, when the setting of the time interval of the search process is changed by the time interval changing unit 16, the search unit 12 executes the search process at the changed time interval from the next time. Data extracted from the disclosure DB 11 as a result of the search processing at predetermined time intervals by the search unit 12 is supplied to the output control unit 17 via the comparison determination unit 15. Then, based on the output control by the output control unit 17, the data of the search result is returned to the search requesting company via the Internet only when the data obtained by the current search is different from the previous data. It is.

Each functional block 1 in FIG. 1 described above
2 to 17 are server machines 1 of each company shown in FIG.
0a to 10e. Among these functional blocks, the search unit 12, the comparison determination unit 15, the time interval change unit 16, and the output control unit 17 are, for example, software modules (agents) that can determine and execute what to process by themselves. Be composed. That is, since the program of the rule included in the search request given from the search requesting company via the Internet resides in the server machine of the search request destination company, the above-described search unit 12, comparison determination unit 15, the functions of the time interval changing unit 16 and the output control unit 17 are executed.

For example, in FIG. 2, when a search job request is input from a certain client 1 in company A (), the request is given to server A of company A, and includes a search condition and a program of a search execution rule. A search agent is created () and issued to the Internet (). This search request (search agent) is given to the server of the search request destination (there may be a plurality of companies) among the other companies B to E connected to the Internet. that time,
Along with the search request, information on the company name of the search request source company A is also given.

In the servers 10b to 10e of the companies B to E,
Since the search agent sent from the search requesting company is resident, the logistics information matching the search condition in the given search request is disclosed to each of the disclosure DBs 11b to 11e.
Take out from inside. Then, it is determined whether or not the retrieved physical distribution information is the same as the physical distribution information retrieved in the previous search process. If the physical distribution information is different, the retrieved physical distribution information is compared with the company A server 10a via the Internet.
Return to ().

As described above, when the physical distribution information extracted in the current search processing is different from the physical distribution information extracted in the previous search processing (or when it is different continuously for n times), the repeated search processing is performed. A process for shortening the time interval is also performed. On the other hand, when the distribution information extracted in the current search processing is the same as the distribution information extracted in the previous search processing (or when the distribution information is the same for m consecutive times).
Changes the time interval of search processing to a longer time without outputting the distribution information extracted this time to the Internet.

Servers 10 of companies B to E, which are search request destinations
In steps b to 10e, the search processing is repeated according to the resident program, and the output processing of the distribution information and the change processing of the time interval as described above are executed according to the result. The server 10a of the company A, which is the search request source, integrates the search results sent from each company each time (),
The search result is returned to the client 1 ().

FIG. 3 is a flowchart showing the flow of the operation performed by the search rule program resident at the search request destination. In FIG. 3, in step S1, the process waits for a time interval determined by the search rule, and when it is time to perform the search process, executes the search process in step S2. Thereby, the distribution information satisfying the search condition is extracted from the disclosure DB 11.

Then, in step S3, it is determined whether or not the distribution information extracted in the current search processing is the same as the distribution information extracted in the previous search processing.
The process proceeds to step S8 if not the same. In step S4, a first counter 15 indicating how many times the same result has been obtained in two successive search processes has been continued.
Increment the value of a by one. Then, in a step S5, it is determined whether or not the count value exceeds the threshold value m.

If the count value of the first counter 15a exceeds the threshold value m, the process proceeds to step S6, and the search processing time interval is changed to be longer than the current time. Then, in step S7, the value of the first counter is set to "0".
After that, the process returns to step S1, and waits for the newly set time interval until the next search process. On the other hand, if the count value has not yet exceeded the threshold value m, the processing returns to step S1 without performing the processing of steps S6 and S7, while maintaining the current time interval of the search processing, and returns to the same time as the previous time. Wait until the next search processing for the interval.

In step S8, distribution information different from the previous distribution information obtained by the current search processing is returned to the search requesting company via the Internet. Then, in step S9, a second counter 15b indicating how many times different search results have been obtained in two consecutive search processes has continued.
Is incremented by one, and it is determined in the next step S10 whether or not the count value has exceeded the threshold value n.

Here, when the count value of the second counter 15b exceeds the threshold value n, the process proceeds to step S11, and the time interval of the search processing is changed to be shorter than the present time. Then, after resetting the value of the second counter 15b to "0" in step S12, the process returns to step S1, and waits for the newly set time interval until the next search processing. On the other hand, if the count value has not yet exceeded the threshold value n, the process returns to step S1 without performing the processes of steps S11 and S12 while maintaining the time interval of the search process at the current setting. Wait until the next search processing for the interval.

As described above, in this embodiment, when one search request is given, the search is repeated at predetermined time intervals in accordance with a predetermined rule (program) included in the search request. The monitoring is performed by performing the process and dynamically changing the setting of the time interval according to the result.

Thus, the time period in which the data in the disclosure DB 11 is frequently updated and the time period in which the data is not updated are grasped, and during the time period in which the data is frequently updated, the database is intensively accessed to perform the search processing. Is performed a large number of times, so that the search process is not performed much in a time period when the data is not updated so much. Therefore, even if the search request source does not know when the database at the request destination is being updated, the updated logistics information can be reliably obtained without omission, and unnecessary search processing is performed as much as possible. It is also possible to avoid the disadvantage of wasting limited computer resources.

Further, in this embodiment, only when the logistics information different from the previous one is retrieved in two consecutive retrieval processes, it is returned to the retrieval requesting company via the Internet. Only the latest updated physical distribution information can be transmitted, and waste of communication processing can be eliminated.

In the above embodiment, the case where the functional configuration shown in FIG. 1 is applied to a steel EC system as shown in FIG. 2 has been described as an example. However, the information sharing system to be applied is not limited to this. Absent. Further, the functional configuration of FIG. 1 does not necessarily need to be applied to an information sharing system on a network, and can be applied to a stand-alone database system that does not use a network.

In the above embodiment, the Internet is used as an example of a network. However, the present invention is not limited to this, and is applicable to all types of networks such as an intranet within a company and an extranet only between specific companies. It is possible to In addition, disclosure DB1
1 may be managed in advance in a separate database server or the like, instead of being distributed to each company.

In the above embodiment, the search unit 1 shown in FIG.
2. An example has been described in which each function of the comparison / determination unit 15, the time interval changing unit 16, and the output control unit 17 is constituted by an agent, but the present invention is not limited to this. For example, all of the server machines 10a to 10e of each company are searched by the search unit 1
2. A program for realizing each function of the comparison determination unit 15, the time interval changing unit 16, and the output control unit 17 may be stored in advance. In this case, it is not necessary to include the program of the rule in the search request and send it as a search agent.

Further, in the above-described embodiment, the process of returning the logistics information different from the previous one only in the two consecutive search processes and the process of changing the time interval of the search according to the search result. Has been described in combination, but at least one of the processes may be performed. For example, even if the same result as the previous result is obtained, it may be returned to the search request source, that is, the search result may be returned each time the search processing is performed.

In this case, for example, by keeping a log (history) of the search result in the server machine of the search request source, it is possible to know the outline of when the database is updated in the search request destination company. Can be. If the outline of the update timing can be grasped, it becomes possible to execute a search process by including a search rule in which a search execution time is registered in advance in a search request.

Further, the processing for changing the time interval may not be performed, and only the processing for returning when there is a change in the search result may be performed. In this case, if the time interval set in advance is shortened to some extent, it is possible to obtain the latest updated logistics information without omission even when it is not known when the database is being updated, and to reduce the wastefulness. It is also possible to effectively use limited computer resources by minimizing communication processing as much as possible.

In the above embodiment, the search process is repeatedly executed in accordance with the given search rule. However, how long the search process is repeated can be arbitrarily set according to the content of the search rule. For example, the search processing may be terminated when a predetermined time (for example, one day) has elapsed since the search request was received, or the obtained search result may be changed from the previous one and returned to the search request source. It is conceivable to end the search process when the search is performed. Further, the search process may be continued until a search end instruction is sent later.

The above-described information access control apparatus according to the present embodiment is constituted by a computer CPU, an MPU, a RAM, a ROM, or the like, and operates a program stored in the RAM or the ROM. Can be realized by Therefore, the present invention can be realized by recording a program that causes a computer to perform the above function on a recording medium such as a CD-ROM, and reading the program into the computer.
As a recording medium, a floppy disk, a hard disk, a magnetic tape, a magneto-optical disk, a nonvolatile memory card, or the like can be used other than the CD-ROM.

Further, the functions of the above-described embodiments are not only realized by the computer executing the supplied program, but also the OS (operating system) or other application software running the program on the computer. When the functions of the above-described embodiment are realized in cooperation with the computer, or when all or a part of the processing of the supplied program is performed by a function expansion board or a function expansion unit of a computer, the functions of the above-described embodiment are realized. Such a program is also included in the embodiment of the present invention.

[0061]

As described above, according to the present invention, access to desired information in the storage means is repeatedly performed at predetermined time intervals, and the time interval of the repeated access is appropriately changed. In a time period in which information in the storage means is frequently updated, intensive access can be performed to extract desired information, and in a time period in which information in the storage means is not updated so much, access can be made less. . Therefore, even if it is not known when the information is updated, it is possible to reliably obtain the latest updated information without omission, and it is possible to minimize unnecessary access. This makes it possible to effectively utilize limited computer resources and obtain the latest information that is updated in a timely manner in real time from the network without any omission. For example, inventory management using this information can be performed accurately and efficiently. It can be carried out.

According to another feature of the present invention, it is determined whether the information retrieved this time by accessing the storage means is the same as the information retrieved last time, and based on the result of the determination. Since it is controlled whether or not to output the information retrieved by the access, for example, the information is returned to the access requesting user only when information different from the previous one is retrieved by two consecutive accesses. It is also possible to eliminate waste when communicating the latest updated information.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing elemental features of an information access control apparatus according to the present invention.

FIG. 2 is a diagram showing an overall configuration of a steel EC system according to the present embodiment in which the functional configuration shown in FIG. 1 is implemented.

FIG. 3 is a flowchart illustrating a flow of a search rule execution process according to the embodiment.

FIG. 4 is a diagram showing an example of physical distribution in the steel industry.

[Explanation of symbols]

 10a to 10e Server machine 11 Disclosure DB 11a to 11e Disclosure DB 12 Search unit 13 Time management unit 14 Result holding unit 15 Comparison determination unit 15a First counter 15b Second counter 16 Time interval change unit 17 Output control unit

Claims (22)

[Claims] 1. A system for a plurality of users existing on a network to share information stored in a storage means, wherein access to desired information in the storage means is repeatedly performed at predetermined time intervals. An information sharing system, comprising: an access unit; and a time interval changing unit that appropriately changes a time interval of access repeatedly performed by the access unit. 2. The apparatus according to claim 1, wherein the time interval changing means appropriately changes the time interval of the access in accordance with shared information that is repeatedly retrieved by the access means accessing the storage means. Information sharing system described. 3. A comparison / judgment means for judging whether or not the shared information retrieved this time by the access means and the shared information retrieved last time are the same. 3. The information sharing system according to claim 2, wherein the access time interval is appropriately changed based on a result of the determination. 4. The time interval changing means continuously or once (m = 2, 3,...) That no change occurs in the shared information obtained as a result of continuous access by the access means. The time interval of the access is changed to be longer than the present time when it occurs, and the time of the access is changed once or n times (n = 2, 3,...) The information sharing system according to claim 3, wherein the interval is changed to be shorter than the current time. 5. A system for a plurality of users existing on a network to share information stored in a storage means, wherein access to desired information in the storage means is repeatedly performed at predetermined time intervals. An access unit, a comparison determination unit that determines whether the shared information extracted this time by the access unit and the shared information extracted last time are the same, and based on a determination result by the comparison determination unit, An output control unit for controlling whether to output the shared information extracted by the unit. 6. The output control means controls to output the currently extracted shared information only when the shared information currently extracted by the access means is different from the previously extracted shared information. The information sharing system according to claim 5, wherein: 7. A system for allowing a plurality of users existing on a network to share information stored in a storage means, wherein access to desired information in the storage means is repeated at predetermined time intervals. An access unit, a comparison determination unit that determines whether the shared information extracted this time by the access unit and the shared information extracted last time are the same, and based on a determination result by the comparison determination unit, Time interval changing means for appropriately changing the time interval of the access repeatedly performed by the means; and output control for controlling whether to output the shared information extracted by the access means based on the result of the judgment by the comparison judgment means. And an information sharing system. 8. The time interval changing means continuously or once (m = 2, 3,...) That no change occurs in shared information obtained as a result of continuous access by the access means. The time interval of the access is changed to be longer than the present time when it occurs, and the time of the access is changed once or n times (n = 2, 3,...) The information sharing system according to claim 7, wherein the interval is changed to be shorter than the current time. 9. The output control means controls to output the currently extracted shared information only when the shared information currently extracted by the access means is different from the previously extracted shared information. The information sharing system according to claim 7 or 8, wherein: 10. The access unit, the comparison determination unit, the time interval changing unit, and the output control unit are configured as software modules capable of determining and executing what to process by themselves, and transmitted together with the access request via the Internet. The information sharing system according to any one of claims 7 to 9, wherein the information is shared. 11. The server according to claim 7, wherein the access unit, the comparison determination unit, the time interval changing unit, and the output control unit are respectively provided in servers of the plurality of users connected to a network. The information sharing system according to claim 1. 12. An access control device for controlling access to information in a storage means, wherein the access means repeats access to desired information in the storage means at predetermined time intervals, and said access means. And a time interval changing means for appropriately changing a time interval of repeated access by the user. 13. A comparing and judging means for judging whether or not the information taken out by the access means this time and the information taken out last time are the same. 13. The information access control device according to claim 12, wherein the access time interval is appropriately changed based on a result. 14. The time interval changing means determines that there is no change in information obtained as a result of continuous access by the access means once or m times (m = 2, 3,...) Continuously. The access time interval is changed to be longer than the current time interval, and the access time interval is changed once or n times (n = 2, 3,...) The access control apparatus for information according to claim 13, wherein is changed to be shorter than the current time. 15. An access control device for controlling access to information in a storage means, wherein the access means repeats access to desired information in the storage means at predetermined time intervals, and said access means. And a comparing and judging means for judging whether or not the information taken out this time and the information taken out last time are the same, and outputs the information taken out by the access means based on the result of the judgment by the comparing and judging means. And an output control means for controlling whether or not the information is accessed. 16. The output control means controls to output the information retrieved this time only when the information retrieved this time by the access means is different from the information retrieved last time. Claim 15
An access control device for the information described in. 17. An access control device for controlling access to information in a storage means, wherein the access means repeats access to desired information in the storage means at predetermined time intervals; Means for comparing and judging whether the information taken out this time and the information taken out last time are the same, and the result of continuous access by the access means is obtained based on the result of the judgment by the comparing and judging means. There is no change in information once or m times (m = 2, 3, ...)
), The access time interval is changed to be longer than the current time, and the change has occurred once or n times (n = 2, 3,...) Continuously. When the time interval of the access is changed to be shorter than the current time, the information retrieved this time by the access unit differs from the information retrieved last time based on the result of the determination by the comparison determination unit. And an output control means for controlling to output the information retrieved this time only when the information is present. 18. An access control method for controlling access to information in storage means, wherein an access step for repeatedly accessing desired information in the storage means at predetermined time intervals; and A comparison determining step of comparing whether the information retrieved this time and the information retrieved last time are the same, and a time interval for appropriately changing the access time interval based on the result of the determination in the comparison determining step And a change step. 19. An access control method for controlling access to information in storage means, comprising: an access step for repeatedly accessing desired information in the storage means at predetermined time intervals; A comparison determining step for comparing whether the information extracted this time and the information extracted last time are the same, and, based on the result of the determination in the comparison determining step, the information extracted in the access step And an output control step of controlling whether or not to output the information. 20. An access control method for controlling access to information in a storage means, comprising: an access step of repeatedly accessing desired information in the storage means at predetermined time intervals; A comparison determining step of comparing whether the information retrieved this time and the information retrieved last time are the same, and a time interval for appropriately changing the access time interval based on the result of the determination in the comparison determining step Access control for information, comprising: a change step; and an output control step of controlling whether to output the information extracted in the access step based on a result of the determination in the comparison determination step. Method. 21. A computer-readable recording medium having recorded thereon a program for causing a computer to function as each of the means according to claim 1. Description: 22. A computer-readable recording medium on which is recorded a program for causing a computer to execute the processing procedure of the method for controlling access to information according to any one of claims 18 to 20.