JP4808052B2 - Document management apparatus, document management method, document management program, and recording medium therefor - Google Patents

Description

  The present invention relates to a document management apparatus, a document management method, a document management program, and a recording medium thereof for performing security of a document management system.

  When distributing electronic documents, there may be some parts that should not be disclosed. At that time, the information was hidden by painting the corresponding parts that should not be disclosed with image editing software or the like. However, once it is painted, the corresponding part becomes invisible, making it difficult to confirm afterwards.

In order to solve such an inconvenience, Japanese Patent Application Laid-Open No. H10-228561 discloses a technique for making the masking object visible on a display in a transparent color and painting it so that it is not visible. Patent Document 2 discloses a technique that enables editing of a masking portion by holding a masking object, original data, and a masked image.
JP 2004-246481 A JP 2004-227181 A

  However, in the conventional method, when an image file in which a masking object is set is edited, a portion that cannot be visually recognized by the masking object may be seen. There is also a demand for different ways of viewing the masking display portion depending on various applications. For example, when a file containing confidential company information is used in a meeting with an outside party, it is easier to manage if the confidential part is visible on the display of the person working for that company, but for a meeting with an outside party. For example, when the confidential part is to be hidden, or when the employee's salary details are printed on a bag, the confidential part is not visible on the display, but the output result needs to be in the original state. In such a case, rather than defining the display of the masking part in advance for the user, setting the masking display method when operating the image file will improve usability, and output will be made with incorrect settings. This will also prevent security, which will lead to enhanced security.

  In the conventional method, original data, image data, and masking object data are held in an image file at the time of external output. This has a problem of increasing the file size. Moreover, there is a security problem that the original data is output to the outside.

  Furthermore, although a document for which masking is set is a confidential document, it is often expected that a part masked by authority is desired to be shown or hidden. In such a case, the conventional setting of the appearance of the masking portion by the access right has a troublesome setting that must be made for each user.

  The present invention has been made in consideration of such a conventional problem, and a document management apparatus capable of improving usability and enhancing security by restricting the display of masking locations at a confidential level. An object of the present invention is to provide a document management method, a document management program, and a recording medium thereof.

First aspect of the present invention, the operation determination means and receiving means for receiving an operation request for requesting an operation on the image data, the required operation is determined whether the external output is a display of the image data, operation judgment When the operation determined by the means is display of image data, the first display means for displaying the image data and when the operation determined by the operation determination means is an external output of the image data, Second display means for displaying a setting screen for accepting masking settings to be performed on the first screen, first masking means for performing masking on the image data based on the masking settings received by the second display means, characterized Rukoto and output means for externally outputting the image data masked by the first masking means.

According to a second aspect of the present invention, in the document management apparatus according to the first aspect, a user judgment unit for judging whether or not the user who requests the operation and the creator of the image data match, and an operation judgment unit. Control means for controlling masking of the image data based on the result of judgment by the user and the result of judgment by the user judgment means, and second masking means for performing masking on the image data. When it is determined by the means that they do not match, the second masking means is executed regardless of whether the operation determined by the operation determining means is a display or an external output, and is requested by the operation determining means. When it is determined that the operation to be performed is a display of image data and the user determination unit determines that the operation matches, the first display unit is executed to determine the operation. Operations requested by the stage is determined to be an external output, and controlling to execute the second display means when it is determined that they match with the user determining means.

  According to a third aspect of the present invention, in the document management apparatus according to the first or second aspect, the image file security level setting means for setting a security level for the image file, and the security level set by the image file security level setting means. A masking display means for setting the masking display state, and when receiving an external output instruction from the user, a new image is created according to the masking display state set by the masking display means, and a new one is newly created. The created image file is output to the outside.

  According to a fourth aspect of the present invention, in the document management apparatus according to the first or second aspect, a masking object security level setting means for setting a security level for each masking object, and a security level set by the masking object security level setting means. And a masking display means for setting the display state of each masking according to the condition, and when receiving an external output instruction from the user, a new image is created according to the masking display state set by the masking display means. The newly created image file is output to the outside.

According to a fifth aspect, a receiving step of receiving an operation request for requesting an operation on the image data, an operation determination step that required operating to determine whether external output is a display of the image data, operation judgment When the operation determined by the step is display of image data, the first display step for displaying the image data and when the operation determined by the operation determination step is an external output of the image data, A second display step for displaying a setting screen for accepting a masking setting to be performed on the image; a first masking step for performing masking on the image data based on the masking setting accepted by the second display step; An output step for externally outputting the image data masked by the masking step 1; For example, it characterized the Rukoto.

According to a sixth aspect of the present invention, in the document management method according to the fifth aspect, a user determining step for determining whether or not a user who requests the operation and the creator of the image data match, and an operation determination A control step for controlling masking of the image data based on a result of the determination by the step and a result of the determination by the user determination step; and a second masking step for performing masking on the image data. If it is determined by the determination step that they do not match, the second masking step is executed regardless of whether the operation determined by the operation determination step is a display or an external output, and the operation determination step It is determined that the requested operation is display of image data, and is consistent with the user determination step The first display step is executed when it is cut off, and the second display is performed when it is determined that the operation requested by the operation determination step is an external output, and is matched by the user determination step. Control is performed to execute the step .

  According to a seventh aspect of the present invention, in the document management method according to the fifth or sixth aspect, the image file security level setting step for setting a security level for the image file and the security level set by the image file security level setting step And a masking display step for setting the masking display state.When an external output instruction is received from the user, a new image is created according to the masking display state set by the masking display step, and a new image is created. The created image file is output to the outside.

  The invention according to claim 8 is the document management method according to claim 5 or 6, wherein a masking object security level setting step for setting a security level for each masking object, and a security level set by the masking object security level setting step And a masking display step for setting the display state of each masking according to the condition, and when receiving an external output instruction from the user, a new image is created according to the masking display state set by the masking display step. The newly created image file is output to the outside.

  A document management program according to a ninth aspect of the invention is a program for causing a computer to execute each of the steps according to any one of the fifth to eighth aspects.

  A tenth aspect of the present invention is a computer-readable recording medium on which the document management program according to the ninth aspect is recorded.

  According to the present invention, when masking for concealing a confidential part of a document is performed, the contents of the masked part are displayed so as to be visible when editing, displaying, image conversion, etc. in the document management system. On the other hand, when an output operation is performed outside the document management system, such as printing, mail transmission, and file storage, the display of the masking portion can be set, so that improvement in usability can be expected. Further, when an output operation is performed outside the document management system, security can be enhanced by leaving no original data.

  In addition, in the inventions according to claims 2 and 6, it is possible to prevent information from leaking to a third party when performing an output operation outside the document management system.

  Further, according to the third and seventh aspects of the invention, when output is performed outside the document management system, it is possible to save the trouble of setting the access right of each user for the document, so that usability is improved.

  Further, in the inventions according to claims 4 and 8, since the display location can be polarized by the difference in authority within the same file, for example, in a same document, a part is confidential and a certain part is confidential. Thus, it is possible to cope with different secret levels depending on the location.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. FIG. 1 is a block diagram showing a configuration of a document management apparatus according to an embodiment of the present invention.

  In FIG. 1, a user interface unit 1 displays a saved image file and an image being edited, and displays a dialog and a message for prompting an operation. The database access unit 2 exchanges image files and information stored in the document management system. The document management engine 3 manages the document management system.

  The document management database 4 stores image data and document information. The image data development unit 5 analyzes the structure of the file data that reads the image file and develops it in the memory. The editing image generation unit 6 performs graphic drawing on the memory in accordance with a user operation during image editing. The image data storage unit 7 writes the image data developed in the memory and the masking item information into the image file. The process control unit 8 controls driving of each of the above means, the engine, and the database.

  FIG. 2 shows the structure of the image file data 11 used in this embodiment. In the figure, masking object information 12 holds masking setting information set in an image file and attributes of individual masking objects. Original data 13 is original image data before masking.

  3 and 4 are flowcharts 1 and 2 showing the operation of this embodiment, FIG. 3 is a flowchart 1, and FIG. 4 is a flowchart 2. These flowcharts 1 and 2 are recorded in a document management program. This document management program is recorded on a recording medium and can be read by a computer.

  In the flowchart shown in FIG. 3, in step 101, an image file operation request such as display or printing is received from the user interface unit 1. In step 102, the processing control unit 8 determines whether the instructed operation request is an operation inside the image management system or an external output operation. As a result of this determination, in the case of an external output operation (“NO”), the process proceeds to the flowchart 2 in FIG.

  When the determination result in step 102 is an operation inside the image management system (“YES”), in step 103, the image file is opened. In step 104, it is determined whether masking is set for the image file. This can be determined by the presence or absence of masking information in the image file data.

  If the determination result in step 104 is “NO”, the image data is read and the image is displayed. If the determination result is “YES”, the process proceeds to step 105, where masking information is acquired from the image file data. In step 106, it is determined whether the operating user is the person who created the image file. This determination is made by holding the creator information in the document management database and comparing it with the accessing user information.

  If the determination result in step 106 is “YES”, the process proceeds to step 107 and the original image data is read from the image file data. Then, in step 108, the masking object is synthesized, and the synthesized image is displayed in step 109.

  If the determination result in step 106 is “NO”, the process proceeds to step 111 where the masking object fill pattern is changed to “fill”. Thereafter, in step 112, the masking object changed in step 111 is synthesized. In step 113, an image file is created. In step 114, the image file created in step 112 is opened. In step 115, the image data opened in step 113 is read, and the process proceeds to the display process in step 109.

  In this embodiment, in the determination in step 106, determination based on the confidential level information can be performed instead of determining whether or not the operating user is the image file creator. This confidential level information is managed by masking object information of the image file data structure.

  Further, in this embodiment, this can be realized by maintaining the confidential level in the attribute of each masking object in the masking object information of the image file data structure. That is, the fill pattern of each masking object is changed in step 111 according to the confidentiality level held by the attribute of each masking object. And it can implement | achieve by performing the process after step 112 using the masking object changed in this way.

  In the flowchart 2 shown in FIG. 4, in step 201, when the determination result in step 102 in the flowchart 1 is “NO”, the image file is opened. In step 202, it is determined whether masking is set for the image file. This can be determined by the presence or absence of masking information in the image file data. If the determination result in step 102 is “NO”, the image data is read and the image is displayed.

  If the determination result in step 202 is “YES”, the process proceeds to step 203 to obtain masking information from the image file data. In the next step 204, it is determined whether or not the operating user is the person who created the image file. This can be determined by holding the creator information in the document management database and collating with the accessing user information.

If the determination result in step 204 is “YES”, the user interface unit 1 displays a dialog for setting the masking object display method. FIG. 5 shows an example of this dialog. This dialog will be described later. Thus, if the determination result in step 204 is “NO”, the masking object fill pattern is changed to the method selected by the user in 205.

  If the determination result in step 204 is “NO”, the process proceeds to step 206, and the masking object fill pattern is changed to “fill”. In step 207, the original image data is read, and in step 208, the masking object changed in step 206 is synthesized. In subsequent step 209, an image file is created. In step 210, the created file is opened. In step 211, the created image is output.

  A dialog for inquiring how to display the masking portion is displayed as shown in FIG. 5, for example. In the dialog shown in FIG. 5, when the user selects “original”, the masking portion is displayed as shown in FIG. 6, and when “inverted” is selected, the masking portion is displayed as shown in FIG. When selected, the masking portion is processed as shown in FIG.

  9A corresponds to FIG. 6, (B) corresponds to FIG. 7, and (C) corresponds to FIG. 8. In this embodiment, the display is not limited to these, and may be a blinking display as shown in FIG. 9D or a transparent display as shown in FIG.

  Instead of the determination of “whether the operating user is the image file creator” in step 204 in FIG. 4, determination based on the confidential level information can be performed. This confidential level information is managed by masking object information of the image file data structure. This can be realized by maintaining the secret level in the attribute of each masking object in the masking object information of this image file data structure. That is, the fill pattern of each masking object is changed in step 206 according to the confidential level held by the attribute of each masking object. And it can implement | achieve by performing the process after step 207 using the masking object changed in this way.

It is a block diagram which shows the structure of the document management apparatus in one Embodiment of this invention. It is a conceptual diagram which shows an image file data structure. It is the flowchart 1 which shows an action | operation. It is the flowchart 2 which shows an action | operation. It is a front view which shows an example of a dialog. It is a front view which shows the example of a display at the time of selecting "original". It is a front view which shows the example of a display at the time of selecting "inverse". FIG. 10 is a front view illustrating a display example when “painting” is selected. It is a front view showing a plurality of display examples.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 User interface part 2 Data access part 3 Document management engine 4 Document management database 5 Image data expansion part 6 Editing image generation part 7 Image data preservation | save part 8 Process control part

Claims (10)

Receiving means for receiving an operation request for requesting an operation on image data ;
Operation determining means for determining whether the requested operation is a display of the image data or an external output ;
First display means for displaying the image data when the operation determined by the operation determination means is display of the image data;
Second display means for displaying a setting screen for accepting masking settings to be performed on the image data when the operation determined by the operation determination means is an external output of the image data;
First masking means for performing masking on the image data based on a masking setting received by the second display means;
Document management apparatus according to claim Rukoto and output means for outputting externally the image data masked by said first masking means. User judging means for judging whether or not the user requesting the operation matches the creator of the image data;
Control means for controlling masking for the image data based on the result of the judgment by the operation judgment means and the result of the judgment by the user judgment means;
Second masking means for performing masking on the image data,
The control means includes
When it is determined by the user determining means that they do not match, the second masking means is executed regardless of whether the operation determined by the operation determining means is a display or an external output. And
When the operation requested by the operation determining means is determined to be the display of the image data and the user determining means determines that they match, the first display means is executed,
Control is performed to execute the second display means when the operation requested by the operation judging means is judged to be an external output, and the user judging means judges that they match. The document management apparatus according to claim 1.   The image file security level setting means for setting a security level for the image file, and a masking display means for setting a masking display state according to the security level set by the image file security level setting means, 2. When receiving an external output instruction from a user, a new image is created in accordance with the masking display state set by the masking display means, and the newly created image file is output to the outside. Or the document management apparatus of 2.   The masking object security level setting means for setting a security level for each of the masking objects, and a masking display means for setting the display state of each masking according to the security level set by the masking object security level setting means. Having an external output instruction from a user, creating a new image according to the masking display state set by the masking display means, and outputting the newly created image file to the outside The document management apparatus according to claim 1 or 2. A reception step for receiving an operation request for requesting an operation on image data ;
An operation determining step for determining whether the requested operation is a display of the image data or an external output ;
A first display step for displaying the image data when the operation determined by the operation determination step is display of the image data;
A second display step for displaying a setting screen for accepting a masking setting to be performed on the image data when the operation determined by the operation determination step is an external output of the image data;
A first masking step for performing masking on the image data based on the masking setting received in the second display step;
Document management method according to claim Rukoto and an output step of externally outputting the image data masked by said first masking step. A user determination step for determining whether or not the user who requests the operation matches the creator of the image data;
A control step for controlling masking for the image data based on a result of the determination by the operation determination step and a result of the determination by the user determination step;
A second masking step for performing masking on the image data,
The control step includes
If it is determined by the user determining step that the two do not match, the second masking step is executed regardless of whether the operation determined by the operation determining step is a display or an external output. And
The first display step is executed when it is determined that the operation requested by the operation determination step is a display of the image data and is matched by the user determination step;
Control is performed to execute the second display step when it is determined that the operation requested by the operation determining step is an external output and the user determining step determines that they match. The document management method according to claim 5.   The image file security level setting step for setting a security level for the image file, and a masking display step for setting a masking display state according to the security level set by the image file security level setting step, 2. When receiving an external output instruction from a user, a new image is created according to a masking display state set by a masking display step, and the newly created image file is output to the outside. 5. The document management method according to 5 or 6.   A masking object security level setting step for setting a security level for each of the masking objects; and a masking display step for setting a display state of each masking according to the security level set by the masking object security level setting step. And when an external output instruction is received from the user, a new image is created according to the masking display state set in the masking display step, and the newly created image file is output to the outside. The document management method according to claim 5 or 6.   A document management program for causing a computer to execute each step according to claim 5.   A computer-readable recording medium on which the document management program according to claim 9 is recorded.

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