JPH08161214A - Data access control system for electronic conference - Google Patents

Abstract

PURPOSE: To perform the careful control of access to conference data corresponding to directory and file units and small items inside a file, etc. CONSTITUTION: The conference data are stored in a conference data storage part 11 and are composed of hierarchized plural items. A read authority list corresponding to the conference data is stored in an access control part 12 and the names of conference participants provided with the read right of the item are listed after respective item numbers. The control part 12 refers to the access authority list for an access request from the conference participant inputted from an input/output part 14 and executes the request to the storage part 11 when the participant who issues the request is provided with the right. Since the undisplayed items are present because the conference participants without the read right are present, when it is possible that the number of the item to be displayed is to be omitted and the continuity is to be lost, a display control part 13 fills the omitted number, changes the item number so as to be a serial number and performs display.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic conference material access control system using a database access control technique. For example, in an electronic conferencing system where a conference is held while inputting and outputting conference materials to and from a conference material database shared by conference participants, it is applied to access control to prevent unauthorized disclosure or alteration of material information. It is something.

[0002]

2. Description of the Related Art As a known document describing a conventional conference device, there is, for example, Japanese Patent Laid-Open No. 4-257045. In order to improve the confidentiality of the conference material presented by the conference device, this publication uses the input / output means to input / output information in the conference terminal device and stores the individual conference information in the personal storage means. Information is transmitted by the transmission means, and each of these means is controlled by the conference terminal control means. A plurality of conference terminal devices are arranged via the communication line to exchange information with other conference terminal devices. At that time, the conference support control unit refers to the limit information regarding the exchange of information between the conference terminal devices stored in the information management unit, and limits the destination and the content of the conference information while limiting the information to the conference participants. It is something to send.

That is, a shared storage unit for conference materials, a conference support control unit, and an information management unit are provided inside the conference support apparatus.
Restriction information regarding information exchange is stored in advance in the information management unit. The conference support control unit rejects or executes the operation request for the conference material sent from the conference participant terminals based on the restriction information. Moreover, this restriction information can be newly added during the operation of the conference material.

[0004]

[Problems to be Solved by the Invention]

(1) Normally, conference materials are often organized and stored in a plurality of directories and files. Also, the inside of one file usually consists of multiple items. Generally, it is considered that the conference participants having the access right are different for each of these items, but the above-mentioned Japanese Patent Laid-Open No. 25704/1992.
According to the method disclosed in Japanese Patent Publication No. 5, there is no description about the setting of access authority (restriction information) in units of directories or files, or in units of small items within files, so fine-grained access restrictions to conference materials I can't.

(2) The directories and files are a data storage system having a hierarchical structure, and the items inside the files usually have a hierarchy. Generally, it is natural that a conference participant who has an access right to an item of a higher hierarchy cannot have an access right to an item of a lower hierarchy. For example, it is unnatural that a participant who cannot read a file can read some of the items within it. However, if access rights are set independently for all items and access control is performed, there is a possibility that such a property reflecting the hierarchical structure cannot be controlled. That is, there is a possibility that an inconsistency may occur in that the item in the lower layer can be read even though the item in the upper layer does not have the read right. Also,
Setting authority for all items is time-consuming and there is a risk of setting mistakes.

(3) When the stored conference material is read and used as common material for the conference, if it is displayed on a large screen shared by the conference participants, the participants of the conference If all the items other than the material items that have the read right are displayed, the participant can directly read the item without the read right. In the case of displaying on the terminal display for individual conference participants, depending on the read right of the participant who uses each terminal, if only the items having the read right are displayed on each display, Participants will not directly read items that they do not originally have the right to read. However, in this case as well, each participant generally does not know whether or not other participants have the read right with respect to each item displayed on his / her own display, so that each participant has the read right for the item. There is a risk that the content will be indirectly (eg, verbally) conveyed to the missing participants during the meeting.

(4) When each item of the conference material is provided with an item number reflecting the hierarchical structure, some conference participants do not have the right to read, and therefore some items are not displayed. There is a possibility that the item number that should be used is missing and the continuity is lost. If this is displayed as it is, the fact that there is an item corresponding to the missing number can be inferred by a participant who does not have the right to read the item. For example, if only items 1.1 and 1.3 are displayed, then other items 1.2
Can be inferred that there will be.

(5) Since there are items that are not displayed due to the presence of conference participants who do not have the read right, when there is a possibility that a blank portion will appear in the display, there is an item corresponding to that blank portion. Participants who do not have the right to read the item can infer the facts.

(6) When setting the access right to the conference material, the conference participant who does not have the authority to the item of the upper layer has the authority to the item of the lower layer, or the authority of the lower layer is set. If a conference participant who has authority for an item is set to have no authority for an item in a higher hierarchy, the problem described in the above item (2), that is, the hierarchical structure is inconsistent. There is a risk that access control will be performed.

(7) Further, the access right setting and access control method for a new conference material (new material) in which a part or all of the conference material for which the access right has already been set are quoted are not established. Then, there is a possibility that contradictory access control may be performed, such as giving the access right of the quoted portion of the new material to the conference participant who does not have the access right in the source material.

(8) With respect to the access control for controlling the conference material on an item-by-item basis, appropriate access control cannot be performed unless the correspondence between the item in the quoted portion of the new material and the item in the source material of the quotation is clear. For example, in the source material, although it is divided into multiple items and different access rights are set for each, in the new material, it is grouped into one item and only one access right is set. If not given, the new material does not allow fine-grained access control as in the source material.

(9) When the authority setting is not made in the lower hierarchy, the authority of the upper hierarchy is applied as it is, and when the authority setting is made in the lower hierarchy, the authority is given priority over the authority of the upper hierarchy. Access control that controls depending on the hierarchical structure, such as controlling by, does not save the hierarchical structure in the source material in the new material,
There is a risk of contradictory access control, such as giving access to the quoted part of the new material to conference participants who do not have access to the source material.

(10) When each item of the conference material has an item number reflecting the hierarchical structure, if the item number of the source material is used as it is in the new material, the hierarchical structure is disturbed and the item number is duplicated. May occur and appropriate access control may not be possible. For example, item 1 of the source material
If item number 1 is used as it is when quoting in item 2 of the new material, such a thing occurs.

(11) In general, it is natural that a conference participant who has an access right to an item of a higher layer cannot have an access right to an item of a lower layer. For example, it is unnatural that a participant who cannot read a file can read some of the items within it. However, if access rights are set independently for all items and access control is performed, there is a possibility that such a property reflecting the hierarchical structure cannot be controlled. That is, there is a possibility that there is a contradiction that the item in the lower layer can be accessed even though the item in the upper layer has no access right. In addition, it is natural that a conference participant who does not have the access right to a certain item in the cited source material does not have the access right to the corresponding item in the new material. However, if you set access rights to all items independently and perform access control, you can not access when you refer to the source material, but you can access the same content in the case of new material,
Such a contradiction may occur. Furthermore, setting authority for all items is time-consuming and there is a risk of setting mistakes.

(12) When setting the access right to the conference material, the authority setting is such that the conference participants who do not have the authority to the item of the upper layer have the authority to the item of the lower layer, or the item of the lower layer. The authority setting is set so that the conference participant who has the authority does not have the authority to the item in the upper hierarchy, or the conference participant who does not have the authority to the item of the source material has the item in the corresponding new material. If a request for setting authority is given, there is a risk that the problems described in (11) above may occur.

(13) Regarding the citation of the conference material, there may be conference material in which the citation source material cites another material, which has a nested structure of the citation, but access control to such material is also possible. Is not suggested.

The present invention has been made in view of the above-mentioned circumstances, and (1) provides a system for realizing fine-grained access control to conference materials corresponding to a directory, a file unit, a small item in a file, or the like. Giving,
(2) To provide a system that realizes access control that reflects the hierarchical structure of meeting material items, and that reduces the trouble and error of setting access authority as much as possible, (3) Stored meeting materials as common materials for meetings When displaying on a display, etc., provide a system that prevents the contents of the meeting from being leaked, whether directly or indirectly, to the conference participants who do not originally have the right to read certain items,
(4) Providing a system that prevents conference participants who do not have the read right for a certain item from inferring its existence. (5) When there is a possibility that a blank portion will appear in the display, the blank portion is dealt with. The purpose of the present invention is to provide a system for preventing the analogy that the specified items exist, and (6) provide a material access control system for electronic conferencing that provides a system for preventing access right settings that contradict the hierarchical structure. .

Furthermore, the present invention realizes (7) access control to finely-divided conference material corresponding to a directory, a file unit, a small item in a file, and the like,
Providing a method that can deal with new conference materials that cite part or all of the conference materials for which access rights have already been set, Providing a method of clarifying the correspondence with items, (9) Clarifying the correspondence between the hierarchical structure of the quoted part of the new material and the hierarchical structure of the source material, and preventing the control in which the access right is inconsistent. The method of doing
0) To provide a method that item numbers correctly reflect the hierarchical structure even in new materials, (11) realize access control that reflects the hierarchical structure of conference material items, and Provide a method that eliminates contradictions and minimizes the effort and error in setting access rights. (12) Realizes access right settings that do not conflict with the hierarchical structure and do not conflict with the access rights of the source material. And (13) a conference meeting material that can provide a method for coping with conference materials that form a nested structure of citations in which a citation source material cites another material. It is intended to provide an access control system.

[0019]

According to the invention of claim 1, in an electronic conference system in which a conference is held while inputting and outputting the conference material to and from a conference material storage unit shared by conference participants, a plurality of conference materials are stored. It is characterized by having a dividing means for dividing into items and a setting means for setting an access right such as a reading right or a writing right of materials of each conference participant for each item divided by the dividing means. By
The meeting materials are divided into multiple items, and access rights such as reading and writing rights of the materials of each meeting participant are set for each item, so that it corresponds to the directory, file unit, and small items inside the file. It is possible to realize fine-grained access control to meeting materials.

According to the invention of claim 2, in the invention of claim 1, when the hierarchical structure is introduced to the material item and the authority setting is not made in the lower hierarchy, the authority of the upper hierarchy of the hierarchical structure is applied as it is. However, when authority is set in the lower layer, the authority is controlled with priority over the authority in the upper layer, whereby a hierarchical structure is introduced in the conference material item and authority is provided in the lower layer. If the setting is not made, apply the authority of the upper hierarchy as it is,
When the authority is set in the lower hierarchy, the authority is controlled with priority over the authority in the upper hierarchy, so that the access control that reflects the hierarchical structure of the items of the meeting material is realized, and the labor for setting the access authority is reduced. You can reduce mistakes.

According to the invention of claim 3, in the invention of claim 1, as the common material of the meeting material, only an item for which all meeting participants have a read right is automatically selected and selected. The feature is that the items are displayed on the display, and as a common material for the conference, only the items that all conference participants have the read right are automatically selected and the selected items are displayed on the display. Since it is displayed on the screen, the content of the item can be directly or indirectly displayed to the conference participants who do not originally have the read right for the item.
It can be prevented from leaking.

According to the invention of claim 4, in the invention of claim 3, when each item of the conference material is attached with an item number reflecting a hierarchical structure, there is a conference participant who does not have a read right. When there is a possibility that the number of the item that should be displayed may be lost due to some items that are not displayed and its continuity may be lost, the item numbers are renumbered and displayed so that the missing numbers are filled and become consecutive numbers. Therefore, when each item of the material is assigned an item number that reflects the hierarchical structure, there is an item that is not displayed because there are conference participants who do not have the read right. When the number of the item to be performed is missing and there is a possibility that the continuity is lost, the item number is changed and displayed so that the missing number is filled and becomes a continuous number. Conference participants that do not have a read right for the eyes it is possible to prevent the analogy of its existence.

According to the invention of claim 5, in the invention of claim 3, when there is a conference participant who does not have the read right, there is a possibility that a blank portion may appear in the display because there are items that are not displayed. , It is characterized by adjusting the layout of the displayed items so that there are no blank areas, and because there are conference participants who do not have the read right, there are items that are not displayed. When there is a possibility that a blank part will occur, the layout of the displayed item is adjusted and displayed so that the blank part disappears. Therefore, the fact that there is an item corresponding to that blank part is given a read right for that item. It is possible to prevent a participant who does not have an analogy.

In the invention of claim 6, in the invention of claim 2, when the access right is set to the conference material, the conference participant who does not have the authority to the item of the upper hierarchy has the authority to the item of the lower hierarchy. If such a request for setting authority is made, or if a meeting participant who has the authority for the item of the lower hierarchy does not have the authority for the item of the upper hierarchy, the access right setting request is issued. It is characterized by rejecting and displaying a warning message on the display, so that when setting the access right to the conference material, conference participants who do not have authority in the upper layer items will If a request for setting authority that has authority, or a conference participant who has authority for an item in a lower layer does not have authority for an item in an upper layer, that access request is made. Since reject the authority setting request to display a warning message on the display, it is possible to prevent access authority setting inconsistent hierarchical.

The invention of claim 7 is characterized in that, in the invention of claim 6, the reason why the request for setting the access right is rejected is displayed on the display in the warning message. In addition, the reason for refusing the access right setting request is displayed on the display, which is useful for setting the right.

According to the invention of claim 8, in the invention of claim 6, the conference participant who does not have the authority to the item of the upper layer in the warning message does not have the authority to the item of the lower layer, or , The conference participants who have the authority for the items in the lower layer display on the display including the setting options for the authority that the items in the upper layer also have the authority. , A conference participant who does not have authority over an item at a higher level does not have authority over an item at a lower level, or a conference participant who has authority over an item at a lower level does Since it will be displayed on the display including the options for authority settings that have authority, it will be helpful for authority settings.

According to the invention of claim 9, when a conference is held while inputting / outputting the conference material into / from the conference material storage unit shared by the conference participants, the conference material is divided into a plurality of items having a hierarchical structure, For each item, access rights such as reading and writing rights of the materials of each conference participant are set, and when the authority setting is not made in the lower hierarchy, the authority of the upper hierarchy is applied as it is and the lower hierarchy is applied. In the electronic conferencing system in which the authority is set with priority over the authority in the upper hierarchy, a new or partial reference to the meeting material for which the access right has already been set is cited. The feature is that appropriate access right setting and access control are performed on the meeting material (new material), and this allows a part or all of the meeting material for which the access right has already been set. Appropriate access right setting and access control are performed on the newly created conference material to realize fine-grained access control to the conference material that corresponds to the directory, file unit, small items in the file, etc. Part of the meeting materials for which access rights have been set,
Alternatively, it is possible to deal with new conference materials that are quoted in their entirety.

The invention according to claim 10 is characterized in that, in the invention according to claim 9, with respect to the cited portion in the new material, each item of the source material is directly used as an item in the new material. Make each item of the material the item of the new material as it is, and clarify the correspondence between the item in the cited part of the new material and the item in the source material.

According to the invention of claim 11, in the invention of claim 10, with respect to each item of the quoted portion in the new material, the hierarchical structure between the items in the upper and lower hierarchical relations in the source material is also included in the new material. It is characterized by saving, and for each item of the quoted part in the new material, the hierarchical structure between the items in the upper and lower hierarchical relationships in the source material is also saved in the new material, and the quoted part of the new material is saved. The relationship between the hierarchical structure of and the hierarchical structure in the source material is clarified, and the control in which the access right is inconsistent is prevented.

According to the invention of claim 12, in the invention of claim 11, when each item of the conference material is attached with an item number reflecting the hierarchical structure, each item of the quoted portion in the new material is: The feature is that the item numbers of the citation source materials are renumbered so that the item numbers in the new material are continuous, so that when each item of the material is assigned an item number that reflects the hierarchical structure, Regarding each item of the quoted part in the material, the item number of the source material is changed so that the item number in the new material is continuous,
Make item numbers correctly reflect the hierarchical structure in new materials.

According to a thirteenth aspect of the present invention, in the invention of the eleventh aspect, when authority is not set for each item of the quoted part in the new material, an item of a higher hierarchy in the new material of the item and its If only the conference participants who have access to both items of the source material corresponding to the item can access the item, and if each item of the quoted part in the new material is authorized, It is characterized by controlling access according to the authority setting, and when the authority setting is not made for each item in the quoted part in the new material, the item in the upper hierarchy and the item in the new material of the item Only the conference participants who have access to both items of the source material corresponding to the item can access the item, and the authority setting is set for each item of the quoted part in the new material. In that case, access control is performed according to the authority setting, access control that reflects the hierarchical structure of the meeting material item is realized, and there is no conflict with the access authority of the citation source material. Make as few mistakes as possible.

According to the invention of claim 14, in the invention of claim 13, when the access right is set to each item of the quoted part in the new material, the conference participation without the authority to the upper layer item in the new material Authority setting request that the person has the authority to the item of the lower hierarchy, or the authority setting request that the conference participant who has the authority to the item of the lower hierarchy does not have the authority to the item of the upper hierarchy, or , When a conference participant who does not have authority to the item of the source material is requested to set the authority to the corresponding item in the new material, the access right setting request is rejected and a warning message is displayed. Characterized by displaying on the display, by this,
To realize the access right setting that does not conflict with the hierarchical structure and does not conflict with the access right of the source material.

The invention of claim 15 is characterized in that, in the invention of claim 14, the warning message is displayed on the display including a reason for refusing the access right setting request, and the access right setting request is rejected. You can know the reason for doing so and use it as a reference for setting permissions.

According to a sixteenth aspect of the present invention, in the invention of the fourteenth aspect, a conference participant who does not have authority in an item of a higher hierarchy in the warning message does not have an authority in an item of a lower hierarchy. Alternatively, a conference participant who has an authority for an item in the lower layer has an authority for an item in the upper layer, and a conference participant who does not have an authority for the item of the citation source has a corresponding new item. The feature is that the items in the material are displayed on the display including the option of authority setting that does not have authority.

The invention of claim 17 is applied to the conference material according to the invention of any one of claims 9 to 16 in which the reference material has a nested structure in which the reference material further cites another material. This feature makes it possible to deal with conference materials that have a nested structure of citations.

[0036]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments will be described below with reference to the drawings. FIG. 1 is a block diagram for explaining an embodiment of an electronic conference material access control system according to the present invention, in which 11 is a conference material storage unit, 12 is an access control unit, 13 is a display control unit, 14 Is an input / output unit. There is only one input / output unit 14, which corresponds to a situation in which, for example, conference participants gather in one room and proceed with the conference while seeing a large screen shared by all. Is not limited only to such cases.
It can also be applied to a situation in which a conference participant accesses the conference material from each terminal via a network and proceeds with the conference while watching each display screen.

The conference material is stored in the conference material storage unit 11 and comprises a plurality of hierarchical items. The read authorization list corresponding to the conference material is stored in the access control unit 12, and after each item number, the names of the conference participants who have the read authorization for the item are listed.
The access control unit 12 refers to the access authority list with respect to the access request from the conference participant input from the input / output unit 14, and stores the conference material if the requesting participant has the authority. This is executed for the section 11. When there is a possibility that the number of the item to be displayed may be missing and the continuity may be lost because there are items that are not displayed due to the presence of conference participants who do not have the read right.
The display control unit 13 replaces and displays the item numbers so that the missing numbers are filled in and become consecutive numbers.

FIG. 2 is a diagram showing an example of the conference material.
The conference material shown in FIG. 2 is stored in the conference material storage unit 11 shown in FIG. This conference material consists of a plurality of hierarchical items. In this example, the hierarchical relationship between layers is indicated by the item number and indent position given to each item.
Here, item 1.1, item 1. are subordinate to item 1.
2 and item 1.3, and further, item 1.1.1, item 1.1.2, and item 1.1.3 are subordinate to item 1.1. Specifically, it is conceivable that a directory corresponds to a large item, a file corresponds to a medium item, and a subdivision of the inside corresponds to a small item. Further, a chart, image data or the like may be one item like the item 1.1.2 in FIG. 2 or may be further divided into small items.

FIG. 3 is a diagram showing an example of a read authority list corresponding to the conference material shown in FIG. The read authorization list shown in FIG. 3 is stored in the access control unit 12 of FIG. Here, after each item number, the names of the conference participants who have the right to read the item are listed. The list of the lower layer has priority over the list of the upper layer, and regarding the item whose list is blank, the list of the item of the upper layer is applied as it is. The same access right list is used for other access rights such as write authority.

In general, the access control unit 12 refers to such an access authority list with respect to an access request from a conference participant input from the input / output unit 14, and the participant who issues the request has the authority. If so, the request is executed to the conference material storage unit 11, and if not, the request is rejected. However, when a request for reading out the conference material is issued as a common material for the conference participants, the access control unit 12 has read permission for all the participants of the conference, regardless of who issued the request. Only those items that are automatically selected by the access control unit 12 and the input / output unit 14 is selected.
Display on the display.

At this time, there are items that are not displayed due to the presence of conference participants who do not have the read right. Therefore, when there is a possibility that the numbers of the items to be displayed may be lost and their continuity may be lost, The display control unit 13 replaces and displays the item numbers so that the missing numbers are filled in and become consecutive numbers. Further, because there is an item that is not displayed for the same reason, if there is a possibility that a blank portion will appear in the display, the display control unit 13 adjusts the layout of the item that is displayed so that the blank portion disappears.

For example, in the example of FIGS. 2 and 3, A,
Consider a case where three persons B and C issue a read request for the entire item 1 in order to hold a conference. In Item 1, all three have read authority only for Item 1.1 and Item 1.3, not for Item 1.2. . Therefore, the access control unit 12
From the conference material storage unit 11, item 1, item 1.1, item 1.
Read only 1.1, item 1.1.2, item 1.1.3, item 1.3, item 1.3.1, and item 1.3.2.

However, if this is displayed as it is, item 1.3 is followed by item 1.3, and the continuity of item numbers is lost. Therefore, the display control unit 13 causes the items 1.3 and
The number continuity of the numbers is realized by replacing the numbers of item 1.3.1 and item 1.3.2 with item 1.2, item 1.2.1 and item 1.2.2, respectively. Further, the display control unit 13 performs a layout adjustment process to fill the blank of the display due to the fact that the original item 1.2 stored in the conference material storage unit 11 is not entirely displayed, as shown in FIG. Such a result is displayed on the display of the input / output unit 14.

Similarly, in the examples of FIGS. 2 and 3, let us now consider a case where three persons A, B, and D issue a read request for the entire item 1 to hold a conference. In this case, these three persons have the read right for all the items except the item 1.1.2. When displaying, as shown in Fig. 5, the number of item 1.1.3 is changed to item 1.1.2, and further, the chart which is the original item 1.1.2 is not displayed. Layout adjustment processing is performed so that the blanks are filled in with item 1.1.1.

When setting the access right to the conference material, when a conference participant who does not have the authority to the item of the upper hierarchy has the authority to the item of the lower layer, or the authority to the item of the lower layer is given. If a conference participant who has a request for permission setting does not have permission for the item in the upper hierarchy,
The access control unit 12 rejects the access right setting request and displays a warning message on the display of the input / output unit 14. In the warning message, the reason why the access right setting request is rejected, and the conference participant who does not have the authority in the item of the upper layer does not have the authority in the item of the lower layer, or the item of the lower layer The conference participants who have the authority to display the authority setting options including the authority to the items in the upper layer.

For example, in the example of FIG. 2, item 1.2.1
When a new read right setting request such as setting the read right only for B, C, and D is issued,
Since C does not have the read right of the item 1.2 of the upper layer, the access control unit 12 rejects this read right setting request and displays a warning message as shown in FIG. 6 on the display of the input / output unit 14. To display.

The access control described above divides the conference material into a plurality of items having a hierarchical structure when the conference is held while inputting / outputting the conference material into / from the conference material storage unit shared by the conference participants, For each item, set the access right such as the reading right and the writing right of the material of each conference participant, and if the authority setting is not made in the lower hierarchy, apply the authority of the upper hierarchy as it is, When the lower layer authority is set, the authority is controlled with priority over the upper layer authority. No consideration has been given to the access right setting and access control method for the new conference material (new conference material) which is partly or wholly quoted, and therefore, the access right is set in the source material. There is a risk that against the stomach conference participants perform the contradictory access control such as would give the access rights of the cited portion of new material.

In the following, the access control method for the new conference material as described above, that is, the access control to the fine conference material corresponding to the directory, the file unit, the small item in the file, etc. is realized, and the access right is already set. An access control method capable of coping with a new conference material in which a part or all of the conference material in which is set is described will be described.

FIG. 7 is a diagram showing an example of conference material to which the present invention is applied, and this conference material is stored in the conference material storage unit 11 shown in FIG. The material is composed of a plurality of hierarchical items, and in this example, the hierarchical relationship between the hierarchical levels is indicated by the item number and the indent position attached to each item.
Here, for example, item 1.
1 and item 1.2, and further, item 1.1.1 and item 1.1.2 are subordinate to item 1.1. In particular,
It is conceivable that a directory corresponds to a large item, a file corresponds to a medium item, and a subdivision of the inside corresponds to a small item.

FIG. 8 is a diagram showing an example of an access right list corresponding to the conference material of FIG. 7, which is stored in the access control unit 12 of FIG. Here, after each item number, the names of the conference participants who have access to the item are listed. The list of the lower layer has priority over the list of the upper layer, and regarding the item whose list is blank, the list of the item of the upper layer is applied as it is. For example, for item 1.1, three people A, B, C have access rights, but for item 1.1.1 and item 1.1.2, only two people B, C. .

In general, the access control unit 12 refers to such an access right list in response to an access request from a conference participant input from the input / output unit 14, and the participant who issues the request has the authority. If so, the request is executed to the conference material storage unit 11, and if not, the request is rejected. However, when a read request for the conference material is issued as a common material for the conference participants, the access control unit 12 has read permission for all the participants of the conference, regardless of who issued the request. Only those items that are automatically selected by the access control unit 12, and the display control unit 1
These items are displayed on the display of the input / output unit 14 after the layout adjustment and the like are performed in 3.

Next, a case where a new material is created by quoting the conference material shown in FIGS. 7 and 8 will be described. At this time, a new access right list for the new material is also created at the same time. FIG. 9 shows the correspondence relationship between the access source list of the citation source material and the new material. In this example, item 1.1 of the source material and its subordinate items, and item 2 and its subordinate items are respectively cited. Here, each item of the source material is associated so as to be an independent item even in the new material, and the upper and lower hierarchical relationships between them are also saved.
In addition, between item 1.1 and item 2 in the source document,
Since there is no hierarchical relationship in the hierarchy, the hierarchical relationship is optional even in the new material.

Further, the item numbers are rearranged so as to satisfy the continuity within the new material. That is, item 1.
1, 1.1.1.1, 1.1.2 are items 1.2, 1.2. 1, 1.
In 2.2, items 2, 2.1, 2.2 are items 3.1, 3.1.
It can be changed to 1, 3.1.2. This is an item number that preserves the hierarchical relationship between items in the source material and has continuity in the new material.

The access control for the new material is performed as follows. First, for the parts other than the quoted part, if the lower hierarchy has no authority settings, the upper hierarchy authority is applied as it is, and if the lower hierarchy has authority settings, that authority is applied to the upper hierarchy. Control over authority. For example, the item 1.1 is controlled so that A, B, and C having the access right to the upper item 1 can access it, and the item 1.3 is controlled so that only A and B can access it.

Regarding the quoted portion, if the authority setting is not made for each item, the access right is given to both the item of the upper hierarchy in the new material of the item and the item of the cited source material corresponding to the item. Access is controlled according to the authority setting so that only the conference participants can access the item, and if the authority is set for each item in the quoted part in the new material. For example, item 1.2
So that A and B can access it, and also in item 1.2.
1 has access rights to its upper item 1.2, A and B
And the corresponding item 1.1. In the source document of item 1.2.1.
Control is performed so that only B included in both B and C having access right to 1 can access.

When setting the access right to the quoted portion, a request for setting authority such that a conference participant who has no authority in the item of the upper hierarchy in the new material has an authority to the item of the lower hierarchy, or A request to set a permission for a conference participant who has the authority to the item of the hierarchy to not have the authority to the item of the higher hierarchy, or a conference participant who does not have the authority to the item of the source material is When a request for setting authority is given to the item, the access control unit 1
2 rejects the access right setting request and displays a warning message on the display of the input / output unit 14.

In the warning message, the reason why the access right setting request is rejected, and the conference participants who do not have the authority in the item of the upper layer do not have the authority in the item of the lower layer, or A conference participant who has authority for an item in a hierarchy also has an authority for an item in a higher hierarchy, and a conference participant who does not have an authority for an item in the source material also has an item in the corresponding new material. Display including the setting options of authority that does not have authority.

For example, in the example of FIG. 9, item 3.1.1
When a new access right setting request such as setting access rights for A, B, and C is issued,
C does not have access to its superordinate items 3 and 3.1,
Moreover, since B does not have the access right of the corresponding item 2.1 in the source material of item 3.1.1, the access control unit 1
2 rejects the read right setting request and displays a warning message as shown in FIG. 10 on the display of the input / output unit 14.

FIG. 11 is a diagram showing an example of conference material in which citations are nested. In the present invention, the conference material has a citation nesting structure in which the source material cites another material. Can also be applied to. In FIG. 11, it is B and C that can access the item 2.1.1 of the citation source material 1 and C that can access the item 2.1.2. Therefore, it is possible to access the corresponding items 1.1.1.1 and 1.1.1.2 in the new materials of both items, and it is A and C that have access to the higher item 1 in the new materials. Since it is only C, both are C only.

[0060]

According to the invention of claim 1, in an electronic conference system in which a conference is held while inputting and outputting the conference material in a conference material storage unit shared by conference participants, the conference material is divided into a plurality of items. The conference material is characterized by having a dividing means and a setting means for setting access rights such as a reading right and a writing right of the material of each conference participant for each item divided by the dividing means. Is divided into multiple items, and access rights such as reading and writing rights for each conference participant's material are set for each item, so that it can be used for each directory, file unit, and small items in the file. Access control to detailed meeting materials can be realized.

According to the invention of claim 2, in the invention of claim 1, when the hierarchical structure is introduced to the material item and the authority setting is not made in the lower hierarchy, the authority of the upper hierarchy of the hierarchical structure is applied as it is. However, when authority is set in the lower layer, the authority is controlled with priority over the authority in the upper layer, whereby a hierarchical structure is introduced in the conference material item and authority is provided in the lower layer. If the setting is not made, apply the authority of the upper hierarchy as it is,
When the authority is set in the lower hierarchy, the authority is controlled with priority over the authority in the upper hierarchy, so that the access control that reflects the hierarchical structure of the items of the meeting material is realized, and the labor for setting the access authority is reduced. You can reduce mistakes.

According to the invention of claim 3, in the invention of claim 1, as the common material of the meeting material, only an item for which all meeting participants have a read right is automatically selected and selected. The feature is that the items are displayed on the display, and as a common material for the conference, only the items that all conference participants have the read right are automatically selected and the selected items are displayed on the display. Since it is displayed on the screen, the content of the item can be directly or indirectly displayed to the conference participants who do not originally have the read right for the item.
It can be prevented from leaking.

According to the invention of claim 4, in the invention of claim 3, when each item of the conference material is assigned an item number reflecting a hierarchical structure, there is a conference participant who does not have a read right. When there is a possibility that the number of the item that should be displayed may be lost due to some items that are not displayed and its continuity may be lost, the item numbers are renumbered and displayed so that the missing numbers are filled and become consecutive numbers. Therefore, when each item of the material is assigned an item number that reflects the hierarchical structure, there is an item that is not displayed because there are conference participants who do not have the read right. When the number of the item to be performed is missing and there is a possibility that the continuity is lost, the item number is changed and displayed so that the missing number is filled and becomes a continuous number. Conference participants that do not have a read right for the eyes it is possible to prevent the analogy of its existence.

According to the invention of claim 5, in the invention of claim 3, when there is a conference participant who does not have the read right, there is a possibility that a blank portion may appear in the display because there are items that are not displayed. , It is characterized by adjusting the layout of the displayed items so that there are no blank areas, and because there are conference participants who do not have the read right, there are items that are not displayed. When there is a possibility that a blank part will occur, the layout of the displayed item is adjusted and displayed so that the blank part disappears. Therefore, the fact that there is an item corresponding to that blank part is given a read right for that item. It is possible to prevent a participant who does not have an analogy.

According to the invention of claim 6, in the invention of claim 2, when setting the access right to the conference material, the conference participants who do not have the authority to the item of the upper layer have the authority to the item of the lower layer. If such a request for setting authority is made, or if a meeting participant who has the authority for the item of the lower hierarchy does not have the authority for the item of the upper hierarchy, the access right setting request is issued. It is characterized by rejecting and displaying a warning message on the display, so that when setting the access right to the conference material, conference participants who do not have authority in the upper layer items will If a request for setting authority that has authority, or a conference participant who has authority for an item in a lower layer does not have authority for an item in an upper layer, that access request is made. Since reject the authority setting request to display a warning message on the display, it is possible to prevent access authority setting inconsistent hierarchical.

The invention of claim 7 is characterized in that, in the invention of claim 6, the reason why the request for setting the access right is rejected is displayed on the display in the warning message, whereby the warning message is displayed. In addition, the reason for refusing the access right setting request is displayed on the display, which is useful for setting the right.

According to the invention of claim 8, in the invention of claim 6, the conference participant who does not have the authority to the item of the upper layer in the warning message does not have the authority to the item of the lower layer, or , The conference participants who have the authority for the items in the lower layer display on the display including the setting options for the authority that the items in the upper layer also have the authority. , A conference participant who does not have authority over an item at a higher level does not have authority over an item at a lower level, or a conference participant who has authority over an item at a lower level does Since it will be displayed on the display including the options for authority settings that have authority, it will be helpful for authority settings.

The invention according to claim 9 divides the conference material into a plurality of items having a hierarchical structure when the conference is held while inputting / outputting the conference material into / from the conference material storage unit shared by the conference participants. For each item, access rights such as reading and writing rights of the materials of each conference participant are set, and when the authority setting is not made in the lower hierarchy, the authority of the upper hierarchy is applied as it is and the lower hierarchy is applied. In the electronic conferencing system in which the authority is set with priority over the authority in the upper hierarchy, a new or partial reference to the meeting material for which the access right has already been set is cited. The feature is that appropriate access right setting and access control are performed on the meeting material (new material), and this allows a part or all of the meeting material for which the access right has already been set. Appropriate access right setting and access control will be performed for the new conference material, so that fine-grained access control to the conference material can be realized in correspondence with the directory, file unit, small items in the file, etc. It is also possible to deal with a new conference material in which part or all of the conference material to which the access right is set is quoted.

The invention of claim 10 is characterized in that, in the invention of claim 9, with respect to the cited portion in the new material, each item of the source material is directly used as an item in the new material. Since each item of the material is directly used as the item in the new material, it is possible to clarify the correspondence between the item in the quoted portion of the new material and the item in the source material.

According to the invention of claim 11, in the invention of claim 10, with respect to each item of the cited portion in the new material, the hierarchical structure between the items in the upper and lower hierarchical relations in the source material is also included in the new material. This is characterized by saving, and because the hierarchical structure between the items in the upper and lower hierarchical relations in the source material is saved in the new material as well, the hierarchical structure of the citation portion of the new material and the source material It is possible to clarify the correspondence with the hierarchical structure and prevent control in which access rights are inconsistent.

According to the twelfth aspect of the invention, in the invention of the eleventh aspect, when each item of the conference material is attached with an item number reflecting a hierarchical structure, each item of the quoted portion in the new material is: It is characterized in that the item numbers of the citation source material are renumbered so that the item numbers in the new material have continuity, so that for each item in the quoted part in the new material, the item number in the new material is continuous. Since the item numbers of the source material are reassigned so as to have "," the item numbers can correctly reflect the hierarchical structure even in the new material.

According to the invention of claim 13, in the invention of claim 11, when the authority setting is not made for each item of the quoted part in the new material, the item of the upper hierarchy in the new material of that item and its If only the conference participants who have access to both items of the source material corresponding to the item can access the item, and if each item of the quoted part in the new material is authorized, Each access control is performed according to the authority setting, thereby realizing the access control reflecting the hierarchical structure of the meeting material item, eliminating the contradiction with the access right of the citation source material, and the access authority. The time and effort of setting can be minimized.

According to a fourteenth aspect of the present invention, in the invention of the thirteenth aspect, when the access right is set to each item of the quoted portion in the new material, the conference participation is not authorized to the item of the upper hierarchy in the new material. Authority setting request that the person has the authority to the item of the lower hierarchy, or the authority setting request that the conference participant who has the authority to the item of the lower hierarchy does not have the authority to the item of the upper hierarchy, or , When a conference participant who does not have authority to the item of the source material is requested to set the authority to the corresponding item in the new material, the access right setting request is rejected and a warning message is displayed. Characterized by displaying on the display, by this,
An access right setting that does not conflict with the hierarchical structure and does not conflict with the access right of the source material can be realized.

The invention of claim 15 is characterized in that, in the invention of claim 14, the warning message is displayed on the display including a reason for refusing the access right setting request. You can know the reason why you rejected the request, and it will be helpful for setting the authority.

According to the sixteenth aspect of the present invention, in the invention of the fourteenth aspect, a conference participant who does not have authority in an item of a higher hierarchy in the warning message does not have an authority in an item of a lower hierarchy. Alternatively, a conference participant who has an authority for an item in the lower layer has an authority for an item in the upper layer, and a conference participant who does not have an authority for the item of the citation source has a corresponding new item. The feature of the present invention is that the items in the material are displayed on the display including the option of authority setting that does not have authority, and this can be used as a reference for authority setting.

The invention according to claim 17 is applied to the conference material according to any one of the inventions according to claims 9 to 16 in which the reference material has a nested structure in which the reference material refers to another material. Since the method according to claims 9 to 16 is also applied to a conference material having a citation nesting structure in which the citation source material cites another material, the citation nesting structure is used. It can also be used for meeting materials.

[Brief description of drawings]

FIG. 1 is a configuration diagram for explaining an embodiment of an electronic conference material access control system according to the present invention.

FIG. 2 is a diagram showing an example of a conference material according to the present invention.

FIG. 3 is a diagram showing an example of a read authority list according to the present invention.

FIG. 4 is a diagram showing a display result (No. 1) when A, B, and C in the present invention make a read request for the entire item 1.

FIG. 5 is a diagram showing a display result (No. 2) when A, B, and D in the present invention make a read request for the entire item 1.

FIG. 6 is a diagram showing an example of a warning message according to the present invention.

FIG. 7 is a diagram showing an example of conference material according to the present invention.

FIG. 8 is a diagram showing an example of an access right list according to the present invention.

FIG. 9 is a diagram showing an example of citation of conference material according to the present invention.

FIG. 10 is a diagram showing an example of a warning message according to the present invention.

FIG. 11 is a diagram illustrating an example of conference material in which citations are nested.

[Explanation of symbols]

11 ... Meeting material storage unit, 12 ... Access control unit, 13 ...
Display control unit, 14 ... Input / output unit.

Claims (17)

[Claims] 1. An electronic conferencing system in which a conference is held while inputting and outputting the conference material to and from a conference material storage unit shared by conference participants, a dividing unit for dividing the conference material into a plurality of items, and the dividing unit. An access control system for electronic conference material, comprising: setting means for setting access right such as read right and write right of material of each conference participant for each item divided by. 2. When a hierarchical structure is introduced to the material item and authority is not set in the lower hierarchy, the authority of the upper hierarchy of the hierarchical structure is applied as it is and the authority is set in the lower hierarchy. In this case, the authority is controlled with priority over the authority of the upper layer, and the electronic conference material access control system according to claim 1, wherein the authority is controlled. 3. The common material of the meeting material is to automatically select only an item for which all the conference participants have a read right and display the selected item on the display. The electronic conference material access control system according to claim 2. 4. When each item of the conference material is provided with an item number reflecting a hierarchical structure, it is displayed because some conference participants do not have the read right and therefore some items are not displayed. 4. The electronic device according to claim 3, wherein when there is a possibility that the number of a power item is missing and the continuity of the item is lost, the missing item number is filled and the item numbers are changed so as to be consecutive numbers. Conference material access control system. 5. When a conference participant who does not have the read right may cause a blank portion in the display due to some items that are not displayed, the layout of the displayed items is adjusted to be blank. The electronic conference material access control system according to claim 3, wherein the display is performed so that the parts are eliminated. 6. When setting an access right to the conference material, when a conference participant who does not have authority in an item in a higher hierarchy is requested to set an authority in an item in a lower hierarchy, When a conference participant who has the authority for the item of the hierarchy has a request for setting the authority that does not have the authority for the item of the upper hierarchy, the request for setting the access right is rejected and a warning message is displayed on the display. The material access control system for an electronic conference according to claim 2. 7. The electronic conference material access control system according to claim 6, wherein the warning message is displayed on a display including a reason for refusing the access right setting request. 8. A conference participant who does not have authority in an item of an upper layer in the warning message does not have authority in an item of a lower layer or has an authority in an item of a lower layer. 7. The electronic conferencing material access control system according to claim 6, wherein the item is displayed on the display including the option of setting the authority such that the item of the upper hierarchy also has the authority. 9. When a conference is held while inputting and outputting the conference material in a conference material storage unit shared by conference participants, the conference material is divided into a plurality of items having a hierarchical structure, and each item is divided into a plurality of items. If you set access rights such as read and write rights for the conference participants' materials, and if the lower hierarchy is not set, the upper hierarchy is applied as it is and the lower hierarchy is set. In the electronic conferencing system in which the authority is controlled in preference to the authority of the upper hierarchy, a new meeting material (new material ), An access control system for electronic conference materials, which is characterized by performing appropriate access right setting and access control. 10. The electronic conference material access control system according to claim 9, wherein each item of the citation source material is directly used as an item in the new material with respect to the quoted portion in the new material. 11. The hierarchical structure between the items having a hierarchical relationship in the quoting source material with respect to each item of the quoted portion in the new material is also preserved in the new material. Access control system for electronic conference materials. 12. When each item of the conference material is given an item number reflecting a hierarchical structure, the item number in the new material has continuity with respect to each item of the quoted portion in the new material. The electronic conference material access control system according to claim 11, wherein the item numbers of the citation source materials are changed. 13. If authority is not set for each item of the quoted part in the new material, both the item of the upper hierarchy in the new material of the item and the item of the citation source material corresponding to the item are set. The feature is that only the conference participants who have the access right can access the item, and if each item in the quoted part in the new material has authority settings, the access is controlled according to the authority setting. The electronic conference material access control system according to claim 11. 14. When setting the access right to each item of the quoted part in the new material, a conference participant who does not have the authority to the upper layer item in the new material has the right to the lower layer item. Such as a request for setting authority, or a request for setting authority such that a conference participant who has an authority for an item in a lower hierarchy does not have an authority for an item in an upper hierarchy, or a meeting that does not have an authority for an item of a reference source. When the participant is requested to set the authority for the item in the new document corresponding to the request, the access right setting request is rejected and a warning message is displayed on the display. 13. An electronic conference material access control system according to item 13. 15. The electronic conference material access control system according to claim 14, wherein the warning message is displayed on the display including a reason for refusing the access right setting request. 16. In the warning message, a conference participant who does not have authority in an item of a higher layer does not have an authority in an item of a lower layer, or a conference which has an item in a lower layer. Participants have authority over the items above it, and conference participants who do not have authority over the items in the source document do not have authority over the corresponding items in the new material. 15. The electronic conference material access control system according to claim 14, wherein the information including the option for setting the authority is displayed on the display. 17. The electronic conference material access control system according to any one of claims 9 to 16, wherein the reference material is a conference material having a nested structure in which the reference source material refers to another material. An electronic conference material access control system characterized by being applied.