JP2003044479A - Document managing system and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a document managing system, in which it is not necessary to have excessive thumbnail information by managing whether how many reduced images of a source image can be accessed, by an access right. SOLUTION: A document managing server side is provided with a control part, network connecting part, reduced image generating part, document information storage part, access right information storage part and source image storage part, a client computer side is provided with a control part 21, network connecting part 24, display part 22, command input part 23 and enlarged image generating part 25, and the control part 21 of the client computer acquires the list of documents from the document managing server, displays it on the display part 22, and transmits a document ID and a user name to the document managing server. On the basis of the document ID and the user name, the control part of the document managing server performs document information acquiring processing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document management system such as an electronic filing system capable of registering, managing, and browsing images, and in particular, a system for outputting information requiring security such as personal data, and The present invention relates to a recording medium recording a program that realizes the function of the system.

[0002]

2. Description of the Related Art Recently, a document management system has been constructed in which a client computer can access a document management server via a network such as an intranet or the Internet. In a normal document management system, access rights can be set for each document, authentication with a user name + password is performed on the client computer, and documents that are accessible after authentication can be displayed and used on the client computer. Is generally set.

Regarding such conventional document management system technology, there is a system in which access rights can be set at a finer level than the entire document. That is, JP 20
Japanese Patent Laid-Open No. 00-268168 discloses a prosthetic hand that can hold thumbnails of a plurality of sizes for an original image and set access rights for each of the current image and thumbnail.

[0004] On the other hand, Japanese Patent Laid-Open No. 2000-181868 discloses a technique in which a part of displayed information can be restricted by adding an access right to an annotation.

[0005]

SUMMARY OF THE INVENTION As described above, Japanese Unexamined Patent Application Publication No.
According to Japanese Patent Laid-Open No. 000-268168, thumbnails of a plurality of sizes can be held for original images, and access rights can be set for each of the original images and thumbnails. However, the technique described above has a problem that extra thumbnail information must be retained. In addition, since the above technique does not intend to control access to the image information itself, it has a drawback that sufficient access control cannot be performed.

Further, in the technique disclosed in Japanese Patent Laid-Open No. 2000-181868, it is possible to limit a part of information to be displayed by adding an access right to the annotation. However, there is a problem that the annotation function must be installed in the viewer as an additional function and cannot be installed in a simple viewer.

Therefore, the present invention has been made in view of the problems of the prior art, and an object thereof is to solve the problems as a whole. That is, it is an object of the present invention to provide a document management system that does not have extra thumbnail information by managing how much reduced images of an original image can be accessed with an access right.

Further, in the above-mentioned document management system, each user is authenticated. However, password-only authentication is also common. The present invention aims to perform password authentication.

Another object of the present invention is to provide a document management system in which information that can be freely displayed can be selected depending on the operation of the user, and the document management can be performed without giving the viewer (display section) a high function. .

What is acquired from the document management server is not the original image itself, but the maximum reduced image that can be authenticated and acquired. Therefore, it may be difficult for a user who uses the client computer to view an image with various scales depending on the document. Therefore, it is an object of the present invention to provide a document management system in which the size of the image that can be displayed on the client computer is the same as the size of the original image.

Conventionally, a reduced image transmitted when transmitting information acquired from a document management server to a client computer is also reduced when transmitting data to a printer when printing with a printer or the like. The image was the same. However, there is also a desire to change the access right depending on the output form. For example, there is a case where it is desired to prevent printing. Therefore, an object of the present invention is to provide a document management system capable of setting an access right according to the output form of original image data.

It is an object of the present invention to provide a recording medium recording the functions of the above software of the present invention.

[0013]

In order to achieve the above object, the invention according to claim 1 is a document management system in which a client computer and a document management server can communicate with each other via a network. A control unit, a network connection unit, a reduced image generation unit, a document information storage unit, an access right information storage unit, and an original image storage unit are provided, and the client computer has a control unit, a network connection unit, and The control unit of the client computer includes a display unit, a command input unit, and an enlarged image generation unit. The control unit of the client computer acquires a document list from the document management server and displays the document list on the display unit, and the document ID and user name to the document management server. Then, the control unit of the document management server performs the document information acquisition process based on the document ID and the user name. Control unit is the most important feature document management system for controlling display on the display unit acquires the document information and the reduced image data from the document management server.

According to a second aspect of the present invention, in a document management system in which a client computer and a document management server can communicate with each other via a network, a control unit, a network connection unit, and a reduced image generation unit are provided on the document management server side. A document information storage unit, an access right information storage unit, and an original image storage unit. The client computer side has a control unit, a network connection unit, a display unit, a command input unit, and an enlarged image generation unit. The control unit of the client computer acquires the document list from the document management server, displays the document list on the display unit, and transmits the document ID and the password to the document management server. Document information acquisition processing is performed based on the password, and the control unit of the client computer uses the document management server The most important feature document management system for controlling display on the display unit acquires the distribution and the reduced image data.

According to a third aspect of the present invention, the character data of the original image stored in the original image storage unit of the document management server is such that the character line thickness is constant and the access right level is higher. 3. The document management according to claim 1 or 2, wherein the characters are thin, and when the reduced image of the original image data is generated by the reduced image generation unit, the lines of the characters disappear at a certain magnification or less. The system is the main feature.

According to a fourth aspect of the present invention, in a document management system in which a client computer and a document management server can communicate with each other via a network, a control unit, a network connection unit, and a reduced image generation unit are provided on the document management server side. A document information storage unit, an access right information storage unit, and an original image storage unit. The client computer side has a control unit, a network connection unit, a display unit, a command input unit, and an enlarged image generation unit. The control unit of the client computer acquires the document list from the document management server, displays the document list on the display unit, and transmits the document ID and the user name to the document management server. The document information acquisition process is performed based on the user name and the user name. Obtains reduced image data, and the most important feature document management system for controlling display on the display unit after enlarging the reduced image data.

According to a fifth aspect of the present invention, in a document management system in which a client computer and a document management server can communicate via a network, a control unit, a network connection unit, and a reduced image generation unit are provided on the document management server side. A document information storage unit, an access right information storage unit, and an original image storage unit. The client computer side has a control unit, a network connection unit, a display unit, a command input unit, and an enlarged image generation unit. The control unit of the client computer acquires the document list from the document management server, displays the document list on the display unit, transmits the document ID and the user name to the document management server, and displays a message prompting the user to select an output form. If the output form is display, the control unit of the document management server performs document information acquisition processing based on the document ID and the user name. When the output form is print, the document information print processing is performed, and the control unit of the client computer further acquires and displays the document information and the reduced image data from the document management server based on the document information acquisition processing result of the document management server. The most important feature is the document management system that controls the display in the department.

A sixth aspect of the present invention is characterized by a recording medium having a program for realizing the function according to any one of the first to fifth aspects recorded therein.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a network configuration diagram of a document management system according to an embodiment of the present invention. A plurality of client computers 1, a document management server 2, and a printer 3 are connected to a network 4 so that data communication can be performed.

FIG. 2 is a block diagram showing the configuration of the document management server in the document management system which is an embodiment of the present invention. This device includes a control unit 11 and a network connection unit 12.
And a reduced image generation unit 13, a document information storage unit 14, an access right information storage unit 15, and an original image storage unit 16. The control unit 11 has a microcomputer including a CPU, a ROM, a RAM, etc., and controls the entire document management server 2. The network connection unit 12 is a device for performing data communication with a device such as the client computer 1 connected to the network via the communication network. The reduced image generation unit 13 is a calculation device for generating a reduced image with a specified magnification from an original image. Document information storage unit 14
Is a storage device for storing detailed information of a document. The access right information storage unit 15 is a storage device for storing access right information set for each document. The original image storage unit 16 is a storage device for storing original image data in a document in file units.

FIG. 3 is a block diagram showing the configuration of a client computer in the document management system which is an embodiment of the present invention. This apparatus includes a control unit 21, a display unit 22, a command input unit 23, a network connection unit 24, and an enlarged image generation unit 25. The control unit 21 includes a CPU, a ROM,
A microcomputer including a RAM and the like is built in to control the client computer 1 as a whole.
The display unit 22 is a display device such as a CRT that displays a document list screen and a document display screen. The command input unit 23 is an input device such as a keyboard or a mouse that inputs commands and data for various operations.
The network connection unit 24 is a device for performing data communication with a device such as a document management server connected to the network via a communication network. Enlarged image generator 25
Is a calculation device for generating an enlarged image of a specified magnification from the reduced image.

FIG. 4 shows an example of the document information schema. The document information holds the original image file name for each document in addition to the document management detailed information such as the document ID, the document name, the registration date, the update date, and the storage deadline date. The original image data with this file name is recorded in the original image storage unit 16.

FIG. 5 shows a schema example of the access right information of claim 1. The access right information stores a document ID, a user name, and a level value of the access right. The user can set the access right for each document. The level value of the access right remains as it is and corresponds to the value of n of the maximum accessible reduction rate (1 / n). That is, in the case of level 1, the maximum is 1/1, indicating that the original image can be accessed. In the case of 2, it becomes 1/2 and only half the size can be accessed. 1
In the case of 000, it is 1/1000, which means that it is inaccessible for the sake of convenience, and also means that non-existent users are similarly inaccessible.

FIG. 6 shows an example of the access right information schema according to claim 2. The access right information stores a document ID and a password n (where n = 1, 2, 3). The maximum value of n may be determined at the time of operation, but here it is set to 3 for the sake of example. The password n means that the password can access the access right level n.

FIG. 7 shows an example of the schema of the access right information of claim 5. The access right information stores a document ID, a user name, a display access right level value, and a print access right level value. A display access right and a print access right can be set for each user for each document. If there is another output form, the access right may be added to this item as needed. The meaning of the level value of the access right is the same as that in FIG.

FIG. 8 shows the processing flow of the document information display processing in the document management system according to the first aspect. The user needs to authenticate the user in advance with respect to the document management server 2 or the user management server or the like existing on the network 4, but it is generally considered that the user name + password authentication is used. First, a document list registered in the document management server 2 is acquired from the client computer 1 used by the user (S1) and displayed on the display unit 22. The user selects a document from the list. The document ID of the selected document and the user name at the time of user authentication in advance are acquired (S3, S4), the information is transmitted to the document management server 2 (S5), and the document information is acquired for the document management server 2. Request processing. The process (S6) in the document management server 2 will be described below. As a result of the process, document information and reduced image data are acquired (S7). By displaying the acquired document information and reduced image data on the display unit 22 (S8), the user can see the contents of the document.

FIG. 9 shows the processing flow of the document information acquisition processing in the document management server according to claim 1 (S6 in FIG. 8). First, the document ID and the user name transmitted from the client computer 1 are acquired (S1). afterwards,
The document information of the specified document ID is acquired from the document information storage unit 14 (S2). Then, the original image data is acquired from the original image storage unit 16 based on the original image file name included in the document information (S3). Further, the access right level N corresponding to the designated document ID and user name is acquired from the access right information storage unit 15 (S4). However, since there is a case where there is no corresponding user (Y in S5), the level 1000 indicating that there is no access right is set to N (S6), and this processing ends. After obtaining the access right level N, the reduced image generation unit 13 reduces the original image to one Nth size (S7). The reduced data, the document information, and the access right level are output data,
It is transmitted to the client computer 1 (S8) and the process is terminated.

FIG. 10 shows the processing flow of the document information display processing in the document management system of claim 2. First, a document list registered in the document management server 2 is acquired from the client computer 1 used by the user (S
1), and display on the display unit 22 (S2). The user selects a document from the list and inputs the password for access. The document ID and password of the selected document are acquired (S3, S4), the information is transmitted to the document management server 2 (S5), and the document management server 2 is requested to perform document information acquisition processing. Processing in the document management server 2
(S6) will be described below. As a result of the processing, document information and reduced image data are acquired (S7). By displaying the acquired document information and reduced image data on the display unit 22 (S8), the user can see the contents of the document.

FIG. 11 is a processing flow of document information acquisition processing in the document management server according to claim 2 (S6 in FIG. 10).
Is shown. First, the document ID and password transmitted from the client computer 1 are acquired (S1). Then, the document information of the specified document ID is acquired from the document information storage unit 14 (S2). Then, the original image data is acquired from the original image storage unit 16 based on the original image file name included in the document information (S3). Further, the password 1, password 2, and password 3 corresponding to the designated document ID are acquired from the access right information storage unit 15 (S4).
If the specified password is the same as password 1, (S
(5: Y), 1 is set to the access right level N (S
6). If not, then it is checked whether it is the same as password 2 (S7), and if so, N is set to 2 (S8). If it is different, it is checked whether or not the password is 3 (S9), and if so, N is set to 3 (S9).
10). If it is still different, N is set to 1000 (S11), the access is disabled, and the process is terminated. If any of the passwords is matched, the reduced image generation unit 13 reduces the original image to one Nth size (S12). The reduced data, the document information, and the access right level are transmitted as output data to the client computer 1 (S13), and the process ends.

FIG. 12 is a conceptual diagram of an internal generating method of the reduced image generating section of claim 3. Basically N × of the original image
Generation is performed so that N pixels correspond to one pixel of the reduced image. The value of the reduced image at that time is N × N of the original image.
Mapping is performed so that the area becomes 1 only when all areas are 1.

FIG. 13 shows an example of the original image before being generated and the reduced image after being generated by the reduced image generating unit of FIG. In the reduced image generated by the reduced image generation unit 13, for example, when the level is 2, it can be seen that only characters having a character thickness of 2 or more are left on the reduced image. Therefore, for a character having a thickness of 1, no character information remains on the reduced image. This means that part of the information in the original image becomes invisible at level 2. In the present invention, it is possible to add security to a part of information by such a method.

FIG. 14 shows the processing flow of the document information display processing in the document management system of claim 4. The basic processing is the same as the processing of claim 1 of FIG. What is different is that after receiving the reduced image data and the access right level N from the document management server 1 (S1 to S7),
Instead of passing the reduced image data to the display unit 22 as it is, after the enlarged image is generated by the enlarged image generation unit 25 (S8), it is displayed on the display unit 22 (S9). .

FIG. 15 is a conceptual diagram of an internal generating method of the enlarged image generating section of claim 4. Basically 1 pixel is N
It is only stretched to × N pixels.

FIG. 16 shows an example of the reduced image before being generated by the enlarged image generating section of FIG. 15 and the generated enlarged image. It can be seen that when the level 2 is enlarged, the thickness of the character is increased from 1 to 2.

FIG. 17 shows the processing flow of the document information display processing in the document management system of claim 5. The process up to user authentication and list display (S1 to S5) is the same as the process of claim 1 of FIG.
The user selects a document from the list and selects an output form whether the document is displayed on the screen or printed (S
6). The document ID of the selected document, the output form, and the user name obtained by the user authentication in advance are acquired, the information is transmitted to the document management server, and then the request processing to be made to the document management server is divided according to the output form. That is, in the case of display, the document information acquisition process is requested (S7), and in the case of printing, the document information print process is requested (S8). Document management server 2
As for the processing inside, we will explain next, and as a result of that processing,
In the case of display, document information and reduced image data are acquired (S9). Since the subsequent steps (S10) are the same as the processing of claim 1 of FIG. 8, description thereof will be omitted.

FIG. 18 shows the processing flow of the document information acquisition processing in the document management server of claim 5 (S).
1 to S8). The basic processing is the same as the case of claim 1 in FIG. The only difference is that the access right level N of the document information is not acquired, but the display access right level N different in the schema is acquired (S4).

FIG. 19 shows a processing flow of document information printing processing in the document management server according to claim 5 (S).
1 to S7). The basic processing is the same as in the case of claim 1 of FIG. What is different is that instead of acquiring the access right level N of the document information, the print access right level N different in the schema is acquired (S4), and finally, the reduced image for the client computer 1 is acquired. The only difference is that the data is not transmitted, but is transmitted to the printer 3 (S7).

[0038]

According to the invention described in claim 1, since the image scale in the accessible document can be changed for each user, a wide range of operations can be performed. Further, it is not necessary to hold extra thumbnail information in the document management server.

According to the second aspect of the invention, password authentication can be performed, and authentication can be performed even for the operation of a document management server or network that does not perform user management.

According to the third aspect of the invention, unless the user has a certain access right, characters of a certain thinness disappear when the reduced image is generated, and thus cannot be seen when the image is output on the screen. Therefore, the access right of information can be freely set for each user. Even if the viewer does not have the annotation function, it is possible to set the access right to the character string simply by changing the thickness of the character string when directly overwriting the original image with the character string. It is possible to implement the function without it.

According to the fourth aspect of the present invention, the user can see the original image in the document in the same size regardless of the access right level, so that the original image can be easily seen.

According to the invention described in claim 5, it is possible for some users to operate such that the original image data of this document cannot be printed.

According to the invention described in claim 6, it is possible to provide a recording medium in which a program for realizing the function of the document scanning system of the present invention is incorporated.

[Brief description of drawings]

FIG. 1 is a network configuration diagram of a document management system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a document management server in the document management system according to the exemplary embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a client computer in the document management system according to the exemplary embodiment of the present invention.

FIG. 4 is a diagram showing an example of a schema of document information.

FIG. 5 is a diagram showing a schema example of access right information of claim 1;

FIG. 6 is a diagram showing a schema example of access right information of claim 2;

FIG. 7 is a diagram showing an example of a schema of access right information of claim 5;

FIG. 8 is a flowchart showing a processing flow of document information display processing in the document management system of claim 1;

FIG. 9 is a flowchart showing a processing flow of document information acquisition processing in the document management server according to claim 1;

FIG. 10 is a flowchart showing a processing flow of document information display processing in the document management system of claim 2;

11 is a flowchart showing a processing flow of document information acquisition processing in the document management server in the processing flow of FIG.

FIG. 12 is a conceptual diagram of an internal generation method of the reduced image generation unit of claim 3;

13 is a diagram showing an example of an original image before being generated and a reduced image after being generated by the reduced image generating unit in FIG.

FIG. 14 is a flowchart showing a processing flow of document information display processing in the document management system of claim 4;

FIG. 15 is a conceptual diagram of an internal generation method of the enlarged image generation unit of claim 4;

16 is a diagram showing an example of a reduced image before being generated by the enlarged image generation unit of FIG. 15 and an example of the generated enlarged image.

FIG. 17 is a flowchart showing a processing flow of document information display processing in the document management system of claim 5;

FIG. 18 is a flowchart showing a processing flow of document information acquisition processing in the document management server in the processing flow of FIG. 17;

19 is a flowchart showing a processing flow of document information printing processing in the document management server in the processing flow of FIG.

[Explanation of symbols]

1 client 2 Document management server 3 printers 4 network 11 Control unit 12 Network connection 13 Reduced image generator 14 Document information storage 15 Access right information storage 16 Original image storage 21 Control unit 22 Display 23 Command input section 24 Network connection 25 Enlarged image generator

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G06F 12/14 320 G06F 12/14 320C 5C062 H04N 1/00 H04N 1/00 C 5/91 5/91 Z F-term (reference) 5B017 AA03 BA05 BA06 CA16 5B069 AA01 BA01 CA13 CA14 5B075 KK07 KK43 KK63 PQ48 UU05 5B082 EA11 EA12 GA01 5C053 FA05 FA07 FA23 JA16 JA22 JA30 LA03 LA11 LA14 5C062 AA06 A40 AB35 A23 AB03 A40 AB35 A23 AF12 AF13 AF14

Claims (6)

[Claims] 1. A document management system capable of communicating between a client computer and a document management server via a network, wherein a control unit, a network connection unit, a reduced image generation unit, and a document information storage unit are provided on the document management server side. And an access right information storage unit and an original image storage unit. The client computer side includes a control unit, a network connection unit, a display unit, a command input unit, and an enlarged image generation unit. The control unit acquires the document list from the document management server, displays the document list on the display unit, and
D and the user name are transmitted to the document management server, the control unit of the document management server performs the document information acquisition processing based on the document ID and the user name, and the control unit of the client computer receives the document information from the document management server. A document management system characterized by performing control of acquiring reduced image data and displaying it on a display unit. 2. A document management system capable of communicating between a client computer and a document management server via a network, wherein a control unit, a network connection unit, a reduced image generation unit, and a document information storage unit are provided on the document management server side. And an access right information storage unit and an original image storage unit. The client computer side includes a control unit, a network connection unit, a display unit, a command input unit, and an enlarged image generation unit. The control unit acquires the document list from the document management server, displays the document list on the display unit, and
D and the password are transmitted to the document management server, the control unit of the document management server performs the document information acquisition process based on the document ID and the password, and the control unit of the client computer further controls the document information and the reduced image from the document management server. A document management system characterized by performing control to acquire data and display it on a display unit. 3. In the character data of the original image stored in the original image storage unit of the document management server, the line thickness of the character is constant, and the higher the access right level, the smaller the character thickness. 3. The document management system according to claim 1, further comprising: when the reduced image generating unit generates the reduced image of the original image data, the line of the character disappears at a certain magnification or less. . 4. A document management system capable of communicating between a client computer and a document management server via a network, wherein a control unit, a network connection unit, a reduced image generation unit, and a document information storage unit are provided on the document management server side. And an access right information storage unit and an original image storage unit. The client computer side includes a control unit, a network connection unit, a display unit, a command input unit, and an enlarged image generation unit. The control unit acquires the document list from the document management server, displays the document list on the display unit, and
D and the user name are transmitted to the document management server, the control unit of the document management server performs the document information acquisition processing based on the document ID and the user name, and the control unit of the client computer receives the document information from the document management server. A document management system characterized in that reduced image data is acquired, and the reduced image data is enlarged and then displayed on a display unit. 5. In a document management system in which a client computer and a document management server can communicate via a network, a control unit, a network connection unit, a reduced image generation unit, and a document information storage unit are provided on the document management server side. And an access right information storage unit and an original image storage unit. The client computer side includes a control unit, a network connection unit, a display unit, a command input unit, and an enlarged image generation unit. The control unit acquires the document list from the document management server, displays the document list on the display unit, and
D and the user name are sent to the document management server, and a display prompting the user to select the output form is displayed. When the output form is displayed, the control unit of the document management server displays the document information based on the document ID and the user name. Perform the acquisition process,
If the output form is print, the document information print processing is performed, and the control unit of the client computer further acquires and displays the document information and reduced image data from the document management server based on the document information acquisition processing result of the document management server. A document management system characterized by performing control to be displayed on a copy. 6. A recording medium on which a program for realizing the function according to any one of claims 1 to 5 is recorded.