JPH01243172A - System for controlling in-document area access - Google Patents

Abstract

PURPOSE:To write information, which the other person cannot change, into a document shared with plural persons by setting an access right in an area unit to compose the document. CONSTITUTION:An input data processing part 16 analyzes position coordinates from a display data processing part 13 and a command or character train inputted from a keyboard 1 through a keyboard driver 15, and when a processing related to the access right is needed, an access check processing part 17 is activated. The access check processing part 17 checks the access right in the area unit by using the access right flag and pass-word area of a document data storage area 10 internal area management information, an access right picture for inputting the pass-word is displayed, a user is required to input the pass-word, and the processing to the area without the access right is inhibited. Thus, a protection can be partially applied to specific data to compose the document.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a document processing system, and particularly to an intra-document area access control system suitable for prohibiting changes to a portion of a document.

[Conventional technology]

In document processing using a conventional word processor,
“Newton special edition word processor all latest version P,
As described in Japanese Patent No. 189J, there is known a control system that allows reading of a document only if the user has access rights.

[Problem to be solved by the invention]

In the above conventional technology, access rights are set in units of documents, such as approval documents, where multiple people update the document and previously created data must not be changed. is not taken into account, and there is a problem in that the entire document unit data can be edited freely or cannot be edited at all.

An object of the present invention is to realize a document processing method that makes it possible to partially protect specific data constituting a document.

[Means to solve the problem]

The above purpose is to provide a document processing device that expresses a target document as a set of rectangular areas, which has an access right flag for setting access rights for each area and an access authorization information area for confirming access rights. When the above area unit is accessed for the first time after the document is opened, the above access right flag is referred to, and if update is prohibited, the user is requested to input access authorization information, and if the access authorization information does not match, access to the area is This is accomplished by ignoring access requests.

[Effect]

Once the access right is granted for each area, the access right remains valid until the document is closed, and the user is not required to input access authorization information each time the Fl area is accessed, so there is no burden on the user. Furthermore, since the user is required to input access authorization information each time he or she accesses an area to which he or she does not have access rights, it is possible to make the user clearly aware of the prohibition of access.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to embodiments.

FIG. 1 shows an overview of a document processing device according to the present invention. The device includes a keyboard 1, a CRT display section 2 and a CRT display section 2.
The keyboard J includes a key group 4 for inputting commands and character strings for operating instructions. A page display screen 5 for displaying the page in actual size and an access right screen 6 for setting access rights and entering a password can be displayed.

FIG. 2 shows a block diagram of a document editing device according to the present invention. The pages that make up the document are text, Table 2
It has a document data storage area 10 that stores data expressed by dividing into rectangular areas for each attribute of the graphic 2 image, and a document data processing section 11 edits the document data in the document data storage area 10. Display data processing section 13
manages display data and multi-windows,
The processed signal passes through the CRT driver 12 to the CRT2.
is drawn on. The position coordinates on the CRT screen inputted from the CRT screen position specifying device 3 are passed to the display data processing unit 13 through the position specifying device driver 14, converted into the identification signal id of the corresponding window and coordinates within the window, and inputted. The data is passed to the data processing unit 16. The input data processing section J6 analyzes the position coordinates from the display data processing section 13 and the command or character string input from the keyboard 1 through the keyboard driver 15, and if processing regarding access rights is necessary, executes the access check processing section 17. The document data processing unit 11 is activated if it is not necessary. The access check processing unit 17 checks the access right for each area using the access right flag and password area (password is used as the access authorization information in this embodiment) of the area management information in the document data storage area lo,
An access right screen 6 for entering a password is displayed, the user is requested to input a password, and processing to an area to which he or she does not have access rights is prohibited. The document data processing section 11 performs editing processing on the document data in the document data storage area 10 by a user who has access rights, and displays the result on the CRT 2 through the display data processing section 13.

Next, an example of operation and display using the present invention will be explained with reference to FIG. FIG. 3(a) shows a page with three areas 21, 22, 23 displayed on the page display screen 5 of the CRT display unit 2, and access to area unit data corresponding only to area 22 is prohibited. It is assumed that . When the user specifies an area on the paper display screen 5 using the CRT screen position specifying device 3, if the specified area is area 21 or area 23, editing of the document data is immediately disabled because access is not prohibited. can be executed.

If the designated area is the area 22, access is prohibited, so the password input screen 6 is displayed as shown in FIG. 3(b). The user inputs a password into the password input canister 24. If the password is correct, editing is allowed to the area until the document is closed.

If the password is incorrect, the display shown in FIG. 3(c) is displayed to notify the user of this fact.

When the user wants to set or change access rights to a specific area, the user selects the target area using the CRT screen position specifying device 3 and presses the "access rights setting" command from the keys 4 on the keyboard 1. By entering the information, an access rights setting screen 6 as shown in FIG. Set access rights by typing.

FIG. 4 shows area management information 30 stored in the document data storage area 10. The area management information 30 includes an area identification signal 1d31 that is an identifier of the area, area management information 32 that indicates the position and size of the area on the paper, and the type of data within the area (text, graphic, etc.).

In addition to the area type 33 that indicates (Image 2 table) and the pointer information 34 to the data in the area, there is also an access right that indicates whether access rights are set (ON sets access rights, OFF
) flag 35. A password area 36 for storing passwords, an access check flag 37 indicating that the access right check has been completed and access to the area is possible (check ends when ON,
OFF and unchecked).

FIG. 5 shows a processing flow for checking access rights for an area to be edited when the area is specified.

Step 100 reads the area management information 30 corresponding to the area ID of the area to be edited. In step 110, the access right flag 35 is checked, and if it is ON, the access right has been set, so the process goes to step 120; if it is OFF, the access right is not set, so the process goes to step 130, and access to the area is disabled. Allow and exit. Step 120 checks the access check flag 37,
If it is ON, the access right check has already been completed and access to the area is permitted, so the process goes to step 130 and ends. If the access right check flag 37 is OFF, the password input screen (see Fig. 3) is displayed in step 140.
b) is displayed and requests the user to enter a password. In step 150, the password input by the user is compared with the password area 36, and if they match, the access check flag 37 is turned on in step 60, and access to the area is permitted in step 130, and the process ends. do. If the passwords do not match, step 170
In this step, the user is informed that he or she does not have access rights, as shown in FIG. 3C, and access to the area is prohibited, and the process ends.

〔Effect of the invention〕

According to the present invention, access rights can be set for each area that makes up a document, so it is possible to write information that cannot be changed by others in a document that is shared by multiple people. It is effective for writing and creating/editing documents that do not contain previous document data.

[Brief explanation of the drawing]

Figure 1 is an overview diagram of an embodiment of a display device according to the present invention, Figure 2 is a block diagram for realizing processing according to the present invention, and Figure 3 is an example of operation when implementing the present invention. FIG. 4 is a diagram showing the contents of area management information used in an embodiment of the present invention, and FIG. 5 is a processing flow diagram of an embodiment of the present invention. 1...Keyboard, 2...CRT display section, 3...
CRT screen position designation device, 4...Key group for command and character string input, 5...Paper display screen, 6...
Access rights screen.

Claims (1)

[Claims] 1. In a document editing device that separates and expresses the paper that makes up a document into areas with attributes such as text, figures, images, tables, etc., the position information and attributes of the areas on the paper and the data expressed in the areas are It has a storage device for storage, a display device for displaying the page, and an input device for inputting operation instructions, and means for setting access authority for each area in the storage device, and access for checking access authority. A method for controlling access to an area within a document, comprising: authorization information storage means; and means for determining whether access to the area is permitted based on the access authority and access authorization information when an access to the area occurs.