JPH0574100B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a document file recovery control system used in a word processor.

[Technical background of the invention and its problems]

Generally, a word processor has a functional configuration in which created document information is stored in an external storage as a document file, and can be arbitrarily selected and reused as needed. In recent years, as the cost of this type of system has fallen, floppy disks (FDs) have come to be widely used as a storage medium for the above-mentioned document files. However, due to its structure, floppy disks require careful handling; for example, they may be affected by external magnetic fields,
If you leave it in a high temperature place, the recording surface may become deformed.
Impacts tend to scratch the recording surface, making normal reading and writing impossible. Furthermore, since the read/write head is in contact with the recording surface, reliability deteriorates when used for a long period of time. For this reason, when using a floppy disk (FD) as a storage medium for document files,
A situation occurs in which it becomes impossible to read or write to the document file (defective document file), but in this case, conventionally, the only way to recover is for the user to re-enter the entire document file; A problem has arisen in that the work requires a great deal of effort and time.

[Purpose of the invention]

The present invention has been developed in view of the above-mentioned circumstances, and by performing error recovery on defective document files that have become unreadable and unreadable, by effectively using data in other undamaged information storage areas.
It is an object of the present invention to provide a document file recovery control system that facilitates the recovery work of defective document files and enables the reuse of defective document files.

[Summary of the invention]

According to the present invention, when an error occurs while transferring document information from the document file area of an external storage device to the work area, the information in the error part is based on information in other normal document file areas. The document file can be proofread, restored to an editable form, and outputted, thereby greatly reducing the labor and time required to restore the document file, and making it possible to easily reuse the document file.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention. In the figure, 1 is a processing device that controls the entire word processor, and 2 is a CRT display device with a keyboard (KB/CRT) used for inputting and outputting data during document creation. Reference numeral 3 denotes a floppy disk device (hereinafter referred to as FDD) that serves as an external storage for the processing device 1, and 4 denotes a floppy disk control device (hereinafter referred to as FDC) that controls the FDD 3 under the control of the processor 1. 5A, 5B
Both are floppy disks that form the storage medium of FDD3, of which 5A is a storage area for document files (hereinafter referred to as document storage area), and 5B is a storage area for document work (hereinafter referred to as current file).
It is. 6 is the error information (ERD) output from the FDC 4 when an error occurs while transferring selected document information from among multiple sets of document information stored in the document storage area 5A to the current file 5B. A document file recovery control unit (hereinafter referred to as FR-CNT) is activated in response to the error and performs document information recovery processing for the error portion, which will be described later.

FIG. 2 is a diagram showing the format of the document storage area 5A, in which a represents the overall format, b
is the format of the document file directory shown in a, c is the format of one document information shown in a,
d indicates the format of the document header section shown in c.

Here, the document file recovery control operation in one embodiment will be explained with reference to FIGS. 1 and 2.
First, when explaining the specific recovery control operation for document files, the specific configuration of the document storage area 5A will be explained. In FIG. 2, a indicates the format of a document storage area 5A on a floppy disk used for storing documents. This document storage area 5A is composed of a document file directory that manages the entire document storage area, and a document storage area main body in which documents 1 to n are stored.

b is a diagram showing the internal structure of the document file directory of this embodiment. First, the document file directory contains information for managing the document storage area itself, such as "document storage area final sector address", "document file directory final address",
Each piece of information of "document storage area start sector address" is held. "Document storage area final sector address" indicates the final sector address of the document storage area in hexadecimal notation, and a document cannot be stored after this sector address on the floppy disk. "Document file directory final address" is the final address of the document file directory, and this value is updated depending on the number of saved documents. The "document storage area start sector address" holds the start sector address of the area in the document storage area where the document is actually stored. Next, the document file directory has an area for managing each document 1 to n held in the document storage area. This area contains information such as the document name of each document, the number of sectors used to store each document (number of used sectors), and the start sector address of the area where the document is stored (document start sector). is retained.

c indicates the format of arbitrary document information held in the document storage area. The document information consists of a "document header section,""documentbody," and "document ancillary information." The "document body" is a collection of character codes and control character codes indicating line breaks and the like. "Document attached information" is information added to a document, such as ruled line data and graph data. The "document header section" is an area in which document management information (for example, document format information) and print format information are stored.

d indicates the structure of the document header section within the document information.
The "document name" is the same as the "document name" registered in the document file directory.
The information "number of lines on one page" and "number of characters on one line" is information that specifies the format of the document.
The "permanent file create size" information indicates the size (number of sectors) of the area used to save the document. "Actually used size of permanent file" indicates the size (number of sectors) of the area (number of sectors) in which the document is actually stored, out of the create size. "Create size of current file" indicates the size of the work file created when this document is read for proofing, editing, and printing. "Print format compressed data" is information necessary for printing a document, such as paper type, paper size, character spacing, line feed pitch, printing start page, and end page. "Position information of ruled line data" indicates the presence or absence of ruled line data and the start sector address of the ruled line data in the document attached information.
Below, pointer information to other attached information is held as necessary.

Here, a specific recovery control operation for a document file in one embodiment will be explained. Proofread, edit, or edit a certain document stored in the document storage area 5A.
Alternatively, when printing, under the control of the processing device 1,
The FDC 4 performs read/write control on the FDD 3 to read a target document from the document storage area 5A, and transfers the document read from the document storage area 5A to the current file 5B. During this transfer, when an error occurs in the read data from the document storage area 5A and is detected by the FDC 4, the FR-CNT 6 is activated by the error information (ERD) generated from the FDC 4 at that time.
The FR-CNT 6 performs the following operations depending on the position of the document file where the document file defect has occurred.

First, if a failure occurs while accessing the document directory section, access to the document directory section is stopped and a search of the document area is performed. A document name is registered in the document header of each document, and a desired document can be obtained by searching the header of each document. Once the desired documents are obtained, the directory can be reconstructed from the information held in the document header of each document.

If a failure occurs while accessing a document name in the directory, the document name is reconstructed by accessing the document header section based on the corresponding document start sector, for example. In addition, if a failure occurs while accessing the document start sector, for example, based on the document storage area start address, access the document area sequentially from the document storage area start address, and use the sector address when the corresponding document name is detected. The document storage area start address is reconstructed from.

Next, consider a case where a defect occurs in the document header portion while a specific (designated) document is being accessed. Since the document header section is generally composed of a plurality of sectors, it is sufficient to restore the information corresponding to the bad sector. For example, if the "document name" information cannot be read, the document name in the directory section is referred to and reconstructed. The created size of the permanent file, the size actually used, etc.
You can recover by searching the size of the document body. Further, the number of lines on one page, the number of characters on one line, compressed data for print format, etc. are restored by supplementing standard values. If the standard value is different from the desired value, it may be corrected to the desired value by normal functions such as document format setting, print format setting, etc. after the document file is restored. Further, a pointer to document ancillary information such as position information of ruled line data is restored by searching the ancillary information section and finding its first sector address.

For example, if a failure occurs while accessing the position information of the ruled line data in the document header section, access is continued and the document header is Restore the position information of the ruled line data of the section. If a storage start sector for document ancillary information is stored in the document header section, you may refer to it to directly read the document ancillary information, read out the position information of the ruled line data from here, and restore it. .

Next, consider a case where a defect occurs in the text of the document.
Since the document body also consists of multiple sectors, only the bad sectors need to be restored. However, since the device itself cannot reproduce the lost part, this part's data is used as a dummy and a "special mark" is created.
It is configured by supplementing "messages to notify the operator of abnormalities", etc., and the current file 5B
stored inside. However, if there is one of the start/end control codes (for example, start double-width character, end double-width character, etc.) in the sectors before and after the bad sector, this pair of control codes will be added to the created dummy data. A contradiction will arise. Therefore,
The FR-CNT 6 searches the sectors before and after the defective sector, and if a conflicting control code is found, the corresponding control code is inserted into the dummy data.

Furthermore, if the document attached information is defective, the pointer of the corresponding document header is cleared and it is assumed that the attached information does not exist.

Through the above recovery operation, the defective document file is read out to the current file 5B and can be subject to proofreading and editing. The operator can reproduce the document in the current file 5B into a more normal document using the proofreading and editing functions.

In the manner described above, the defective document file can be recovered and reused. Such automatic recovery processing for defective document files greatly reduces the recovery processing work required by the operator.

In the above-described embodiment, a floppy disk was used as an example of the document file area, but the present invention can also be applied to recovery of a defective file section in, for example, a magnetic disk device, a magnetic tape device, etc.

〔Effect of the invention〕

As described in detail above, according to the present invention, it is possible to easily realize automatic recovery of defective document files, and to provide a document file recovery control method that allows defective document files to be reused.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention;
FIG. 2 is a format diagram showing the structure of the document storage area in the above embodiment. 1... Processing device, 3... Floppy disk device (FDD), 4... Floppy disk control device (FDC), 5A... Document file work area (document storage area), 5B... Document work storage area (current file) ), 6...Document file recovery control unit (FR-CNT).

Claims (1)

[Scope of Claims] 1. An external storage device having a document file storage area for storing a plurality of sets of document information including a document body and document management information, and directory information of the plurality of sets of document information; A work area provided in a storage device for storing designated specific information among the information stored in the document file storage area; and a work area for transferring information from the document file storage area to the work area and for transferring data. a control device having an error detection function; and when an error occurs in the directory information in response to error detection by the storage control device when information is transferred from the document file storage area to the work area; A recovery control unit that restores the directory by referring to document management information, and restores the management information based on the directory information or the document information when an error occurs in the document management information. A document file recovery control method characterized by: 2. An external storage device having a document file storage area for storing document information; and a specified specific document provided in the external storage device or the internal storage device and among the document information stored in the document file storage area. a storage control device having a transfer data error detection function that transfers the document information from the document file storage area to the work area; and a storage control device that transfers the specified information from the document file storage area to the work area. When transferring document information, in response to error detection by the storage control device, if an error occurs in which one of the pair of control codes (start and end) is lost, the other of the pair of control codes is lost. A document file recovery control method, comprising: a recovery control unit that supplements the specific document information that has been saved.