JPH05181907A - Image information storing method - Google Patents

Abstract

PURPOSE:To retrieve a specified document without using an auxiliary storage medium other than an optical disk and to suppress the prepation time for index information within a fixed length of time. CONSTITUTION:The storage area on the optical disk is sectioned into a document information area 52, a document control information area 51, and an index information area 53; each time key words written in the document control information area 51 increases above a specific number, new index information is generated on the basis of document control information corresponding to the key words and written in the index information area 53.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of storing image information which enables a document file to be searched without using an auxiliary storage medium such as a floppy disk or a hard disk.

[0002]

2. Description of the Related Art As shown in FIG. 5, a document file system using a so-called write-once type storage medium (optical disk) is a reading section and a recording section for controlling and sending an optical disk containing an optical disk and for inputting and outputting a document file. And a document input / output device 2 having a display unit, a search device for storing index information for searching a document file, and a system control device 4 for controlling the respective devices 1 to 3 as a whole.

As shown in FIG. 6, the conventional specific construction of the search device 3 is a system interface section 31, a search control section 32, and a main memory 33 for the search control section 32 to execute data processing. And an auxiliary storage interface unit 34 and an auxiliary storage drive unit 35 (the details of which will be described later).

As shown in FIG. 7, the storage area 5 of the conventional optical disk incorporated in the optical disk control device 1 is divided into a document management information area 51 and a document information area 52,
Management information # 1 _a ~ # N _a document information written on the document information area 52 #. 1 to # N is written in the document management information area 51.

[0005] These management information # 1 _a ~ # N _a, as shown in FIG. 2, article D indicating the number of each document file
N ₁ and document position information AD indicating the position of each document file
₁ and the keyword KW _{i, 1} attached to each document file
~ KW _{i, n} are included.

On the other hand, as shown in FIG. 3, a storage area of an auxiliary storage medium (flobby disk, hard disk, etc.) built in the retrieval device 3 has a keyword KW ₁ of a document file and its keyword KW ₁ . The number of index cells DN _{1,1 to} DN _{1 , m1 of the} document file is K, and K is the same as index cells 2 to K.
The index information in which the index cells are sorted in descending order of the keywords KW _{1 to} KW _k is recorded. This index information is used to quickly search the division number DN ₁ of the document file having the designated keyword.

When registering a document file, the system control device 4 writes the document information and the document management information corresponding to the document information on the optical disc built in the optical disc control device 1 to the search device 3 each time. Send document management information.

The search device 3 searches whether or not each keyword included in the received document management information is included in the index information as described with reference to FIG. Only the document number contained in the document management information is added to the cell in the document number list, and if there is no same keyword, an index cell consisting of the keyword and the document number is inserted at a predetermined position in the index information storage area. To do.

When retrieving a document file, the system control device 4 sends the retrieval device 3 the keyword of the document to be retrieved.

The retrieval device 3 searches the index information (consisting of a keyword and a document number list), obtains the document number of the document file corresponding to the received keyword, and returns it to the system control device 4.

Based on the document number returned from the retrieval device 3, the system control device 4 reads the document corresponding to the document number from the document management information area 51 (see FIG. 7) of the optical disc built in the optical disc control device 1. Management information (eg #
1 _a ) is read out, and the document information is read out based on the document position information AD ₁ (see FIG. 2) therein.

The operation of the conventional search device 3 that executes the above-mentioned functions will be described with reference to FIG.

At the time of registering a document, the system interface unit 31 receives the document management information (for example, # 1 _a ) sent from the system control device 4, and the output of the system interface unit 31 is stored in the main memory of the search control unit 32. After the format conversion on 33, the auxiliary storage interface unit 34 is controlled to write the index cell at a predetermined position of the index information storage area (see FIG. 3) on the auxiliary storage medium built in the auxiliary storage drive unit 35. To be crowded.

When searching for a document file, a keyword (for example, KW) sent from the system controller 4 is sent.
₁ ) is received by the system interface unit 31, the search control unit 32 controls the auxiliary storage interface unit 34 based on the output of the system interface unit 31, and the auxiliary storage drive unit 35
The document number corresponding to the keyword is searched from the index information (see FIG. 3) on the auxiliary storage medium incorporated in the main memory 33, the format is converted on the main memory 33, and the system interface unit 31 is controlled to obtain the document number. System controller 4
Return to.

[0015]

However, in the case of the search method in the above-mentioned conventional document file apparatus, it is essential to use an auxiliary storage medium such as a floppy disk or a hard disk, which is a document file system using an optical disk. It is a major obstacle to cost reduction. When a hard disk is used as the auxiliary storage medium, the number of optical disks that can be handled is limited. Further, when a removable auxiliary storage medium such as a floppy disk is used, there is a complication that an optical disk and the auxiliary storage medium must be used in a pair.

These problems are caused by storing the index information in an auxiliary storage medium (floppy disk, hard disk, etc.).

As a measure for avoiding the above-mentioned problem, when the optical disc is set in the optical disc control device 1 (see FIG. 5), all the document management information in the document management information area 51 (see FIG. 7) in the optical disc is read out. Although a document file search method has been proposed in which index information is created, and this index information is recorded in an auxiliary storage medium such as a hard disk, then a document file search is executed, but this search method A new problem occurs that it takes a lot of time to complete the search information.

The present invention has been made in view of the above problems, and provides an image information storage method in a document file device capable of searching a specified document without using an auxiliary storage medium other than an optical disk. The purpose is to

[0019]

In order to achieve the above object, the present invention divides the storage area of an optical disk for storing document information into a document information area, a document management information area and an index information area, When new document information is written in, the document management information having at least the document number and the keyword corresponding to the document information is created, and this is written in the document management information area and also written in the document management information area. Each time the number of the generated keywords increases by a predetermined number or more, new index information is created based on the document management information corresponding to the keyword, and the new index information is written in the index information area.

[0020]

According to the present invention, the index information necessary for retrieving the document information is stored on the optical disk and the index information is used when retrieving the document information. The index information can be reproduced at high speed without using an auxiliary storage medium.

Further, since the index information is written to the optical disk based on the number of keywords in the index information,
The creation time of index information can be suppressed within a fixed time.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As an embodiment of the present invention, a case where the invention is applied to the document file system of FIG. 5 described above will be described below.

In the document file system shown in FIG. 5, the storage area 5 of the optical disk used in the present invention which is set in the optical disk controller 1 has a document management information area 51, a document information area 52, and a new storage area 5 as shown in FIG. It is divided into three areas, the set index information area 53.

The document information area 52 is a portion in which the content of the document (hereinafter referred to as document information) is written, and each document information is assigned document numbers # 1 to #N in the order of registration.

The document management information area 51 is a document information area.
A portion each corresponding document management information # 1 _a ~ # N _a is written into all written in 52 the document information # 1~ # N, the document management information # 1 _a ~ # N _a is , Each has a format as shown in FIG.

[0026] Each format, article D of a document file corresponding to the document management information (e.g., # 1 _a)
N ₁ and document position information AD ₁ indicating address information in which the document information is written, and a plurality of keywords KW _{i, 1 to} KW
_{i, n} (search information) are recorded respectively.

The index information area 53 is a portion in which index information for searching the document information # 1 to #N written in the document information area 52 from the keyword (search information) is written. index information about the document information up numbers # 1 to # M _1, article number # 1 to # index information about the document information to M _2, the index information about the document information up ...... article number # 1- # M _L in turn It is written.

[0028] Each of these index information, as shown in FIG. 3, the document number (e.g., DN ₁₎ the keyword of the document information included in the index information (e.g., document # 1~ # M _L) (e.g., KW ₁₎ And the document number (D) having the keyword (for example, KW ₁ ) and the keyword.
An index cell (for example, index cell 1) consisting of a list of N _{1,1 to} DN _{1, m1} is a keyword (KW _{1 to} KW).
They are arranged in descending order of W _K ).

On the other hand, an example of a concrete configuration of the search device 3 of the document file system shown in FIG. 5 is as shown in FIG.
A system interface unit 31 connected to the system control device 4, a search control unit 32, and a main memory 33, and an auxiliary storage interface unit 34 and an auxiliary storage drive unit 35, which are provided in the conventional device 3 of this type, are provided. It is reduced and simple.

[0030] In this search device 3 (detailed operation will be described later.), And finally the written index information (e.g., document # 1~ # M _L infos) read the in the index information area 53 by issuing the document information in the registered document information #. 1 to # N in the document information area 52 # 1~ # M _L (#
Index information for M _L <#N (ie document #
1 information) is obtained regarding # M _L.

Remaining document information #M_{L + 1}~ About #N
Are the document management information (#M_{L + 1a}~ #
N_a) From the document management information area 51 (see FIG. 1),
The format of the read document management information (see FIG. 2)
Document number (eg DN) ₁) And keywords (check
Documents # 1 to #M in the index information area 53._LConcern
The index information is additionally inserted at a predetermined position.

In this way, the index information for all the document information # 1 to #N registered in the document information area 52 is generated in the index information area 53. After that, the document is searched by designating each of these index information (keywords).

When new document information is registered in the document information area 52, the document management information corresponding to the document information is added to the document management information area 51 and the index information in the search device 3 (described later). ) Is additionally inserted at a predetermined position.

Then, the number of keywords included in the index information in the search device 3 is determined in advance from the number of keywords included in the index information recorded at the end of the index information area 53 in the optical disc. When it increases by several M or more, the index information in the search device is additionally written in the index information area 53 in the optical disc.

Therefore, in the first index information of the index information area 53 of the optical disk, the index cell 1 as shown in FIG.
2 ... M are included, and the second index information includes
2 × M index cells are included, and similarly, the L-th index information includes L × M index cells.

When the search device 3 creates the index information, the index information written at the end of the index information area 53 of the optical disk is read out, and then the document information next to the document information included in the index information is registered. The document management information corresponding to each of the completed final document information is sequentially read from the document management information area 51, and the index information (keyword and document number) contained therein is stored in the predetermined index information of the previously read index information. Insert additional at the position. The processing time at that time is almost determined by the number of keywords to be additionally inserted.

As shown in FIG. 5, the retrieval device 3 is connected to the system control device 4, and the information in the optical disc built in the optical disc control device 1 via the control device 4 (FIG. 1). Through FIG. 3) can be read and information can be written in the optical disc.

That is, the retrieval device 3 creates index information for document retrieval based on the information sent from the system control device 4, and then when the system control device 4 supplies a keyword, the index information for document retrieval is created. The document number corresponding to the keyword is sent to the system controller 4.

To explain the more specific operation, first, when the optical disc is set in the optical disc control device 1,
The system controller 4 controls the optical disk controller 1 to read the last index information written in the index information area 53 of the optical disk and send it to the search device 3. The search control unit 32 in the search device 3 shown in FIG. 4 loads the index information received by the system interface unit 31 into the main memory 33, and controls the system interface unit 31 to determine the number of keywords K ₁ included in the index information. And returns it to the system controller 4.

Next, the system control unit 4 controls the optical disc control unit 1 to sequentially read the document management information corresponding to the document information not included in the index information from the document management information area 51 of the optical disc, Search these 3
Send to.

The search control unit 32 in the search device 3 sequentially inserts the document number and the keyword in the document management information received by the system interface unit 31 into the index information on the main memory 8.

After completing the creation of the index information for all the document information registered in the optical disc, the search control unit 32 of the search device 3 causes the system interface unit 31 to receive the keyword sent from the system control device 4. Also, the document number corresponding to the keyword is searched based on the index information in the main memory 8 and the document number is sent back to the system control device 4 via the system interface unit 31.

At the time of registering the document information, the system control device 4 additionally writes the new document information input from the document input / output device 2 in the document information area 52 of the optical disc, and manages the document information for the new document information. Information is created and added to the document management information area 51. Then, the document management information is transmitted to the search device 3 (see FIG. 4).

In the search device 3, the system interface unit 31 receives the sent document management information and retrieves the keyword and document number (see FIG. 2) contained in the document management information from the search control unit. The index information is additionally inserted at a predetermined position in the main memory 33 via 32, and thereafter, the number K ₁ of keywords included in the index information is returned to the system controller 4 via the system interface unit 31.

In the system controller, the increase (K _i −K ₁ ) in the number of keywords with respect to the number K ₁ of keywords included in the index information recorded at the end of the index information area 53 in the optical disk is previously calculated. When the predetermined number M or more is determined, the index information recording instruction signal is transmitted to the search device 3.

When the search control unit 32 of the search device 3 receives the index information recording instruction via the system interface unit 31, it retrieves the index information on the main memory 33 from the system interface unit.
31 is controlled and transmitted to the system controller 4. The system controller 4 uses the received index information as the optical disk controller 1
Is controlled to additionally insert into the index information area 53 of the optical disc.

As described above, in this embodiment, every time the number of keywords attached to the registered document management information increases by a predetermined number M or more, index information for all registered document information is written on the optical disc. Because it is complicated, you can: That is, when the optical disk is set in the optical disk control device 1, it is possible to suppress the creation time of index information for all registered document information within a fixed time. Further, by adjusting the value of the predetermined number M, the start-up time when setting the optical disk can be controlled. Furthermore, the document file system can be completed much faster than reading all the document management information and creating index information based on it.

[0048]

As is apparent from the above description, according to the present invention, the index information is stored on the optical disk, and the index information is read out and used at the time of searching the document information. The index information can be reproduced at high speed without using an auxiliary storage medium such as a hard disk or a hard disk, and as a result, the cost of the document file system using the optical disk can be significantly reduced.

Further, since the index information can be managed only by the optical disk, the destruction of the index information due to the failure of the auxiliary storage medium as in the prior art is eliminated and the reliability of the system is improved.

Further, since the index information is written to the optical disk based on the number of keywords in the index information,
You can keep the time to create index information within a certain time,
Good operability can be provided.

[Brief description of drawings]

FIG. 1 is a format diagram of an example of a document file optical disk used in the present invention.

FIG. 2 is a format diagram of an example of document management information.

FIG. 3 is a format diagram of an example of index information.

FIG. 4 is a block diagram of a search device in a document file system to which the present invention is applied.

FIG. 5 is a block diagram of a document file system to which the present invention is applied.

FIG. 6 is a block diagram of a search device in a conventional document file system.

FIG. 7 is a format diagram of a conventional document file optical disc.

[Explanation of symbols]

 1 optical disk control device 2 document input / output device 3 retrieval device 4 system control unit 5 optical disk storage area 51 document management information area 52 document information area 53 index information area

Claims (1)

[Claims] 1. A storage area of an optical disk for storing document information is divided into a document information area, a document management information area, and an index information area, and when writing new document information on the optical disk, it corresponds to the document information. Document management information including at least a document number and a keyword is created, and this is written in the document management information area, and the keyword written in the document management information area corresponds to this keyword every time it increases by a predetermined number or more. A method for storing image information, characterized in that new index information is created based on the document management information and written in the index information area.