JPH04137172A - File device - Google Patents

Abstract

PURPOSE:To retrieve even vector information whose retrieval key word is drawing information by storing the vector information in the index part of a file. CONSTITUTION:When an operator indicates the start of retrieval based upon the vector information, a vector information display control mechanism 22 retrieves the smallest key word of the lowest-order retrieval block 15 in an auxiliary storage device 11, reads the vector information which is paired and stored, and displays it on an image display device 23. When there is not a stop indication from a display keyboard 25, a next key is retrieved and the processes are repeated until the stop indication is made. The operator looks at the displayed image and indicates the stop when a target image is displayed. Once the stop is indicated, the mechanism 22 informs a record reading mechanism 24 of position information on a record stored in a pair with the vector information and actuates the mechanism. The actuated mechanism 24 reads the record indicated by the record position information out of the file and actuates a vector information display mechanism 22. The actuated mechanism 22 displays the contents of the record on the device 23 and the retrieval ends.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a file device, in particular, to access records at random using a specific item of a record as a keyword. The present invention relates to a file device having a key added as an index.

[Conventional technology]

Conventionally, this type of file device has a hierarchically structured index and uses coded keywords as an index.
When searching for records, the structure was such that the index was searched using coded keywords.

[Problem to be solved by the invention]

The above-described conventional file device has a drawback in that it cannot be determined whether a target record code exists in a file unless the encoded search keyword is known in advance.

For example, if the search keyword is intuitive, such as a company mark or design drawing information expressed in vector information, the search cannot be performed.

[Means to solve the problem]

According to the present invention, in order to randomly access records using a specific item of a record as a keyword, a file device having a tree-structured index with a key in which location information in the storage device in which the record is stored is added to the keyword. In , a keyword that identifies a record and vector information are stored in pairs at the lowest level of the tree-structured index, and when access to a file using vector information is declared, starting from the minimum keyword at the lowest level of the tree-structured index. Searches the index in ascending order, sequentially displays vector information stored in pairs with keywords on the image display device, notifies stop of display when target vector information is displayed on the image display device, A file device characterized in that when notified, it stops displaying and reads records from record position information added to keywords stored in pairs with vector information being displayed.

〔Example〕

Next, an embodiment of the present invention will be described in more detail with reference to the drawings.

FIG. 2 is a block diagram of a file device according to an embodiment of the present invention. Auxiliary storage device 11 and data processing device 21 are connected.

The data processing device 21 uses a keyboard 25 for notifying the operator to start and stop searching for files, and vectors stored at the lowest level of the active section 12 of the auxiliary storage device 11 based on instructions from the keyboard 25. Based on the vector information display mechanism 22 that reads information and displays vector information on the image device 23, and the record position information added to the keyword stored in pairs with the vector information currently displayed based on the instruction to stop the search. It consists of a record reading mechanism 24 that reads records.

FIG. 1 shows the file structure in the file device of this embodiment. In the file device of this embodiment, the auxiliary storage device 1
1, an index section 12 that stores an index for accessing records R1 to R1, and records R□ to Ry.
A record storage area 13 for storing .

The index unit 12 includes a representative key (
The keyword of the key (with the keyword with the maximum value in the index block 15) and its position information PI of the index block 15
, P2 ~, upper index block 1 that stores keys with
4 and the keywords of each record R1~R, 0゛~,'
and a plurality of lower index blocks 15 that store keys having position information P, ~Py' and vector information 1 to vector information y. Multiple lower index blocks 15
The keys within are arranged in ascending order of keywords from 1 to Ky.

Next, the operation of the file device of this embodiment configured as described above will be explained.

First, when the operator instructs the start of a search using vector information from the keyboard 25, the vector information display control mechanism 2
2 is an index part 12 in a file in the auxiliary storage device 11
The minimum keyword of the index block 15 at the lowest level is searched for 1, and the vector information 1 stored in pairs is read and displayed on the image display device 23. If there is no stop instruction from the keyboard 25 after the display, the search for the next key is repeated until a stop instruction is received.

The operator looks at the displayed images and, when the desired image is displayed, issues a stop instruction from the keyboard 2S.

When instructed to stop, the vector information display control mechanism 22 notifies the record reading mechanism 24 of the position information of the record stored in pairs with the currently displayed vector information and starts the operation.

The activated record reading mechanism 24 reads the record indicated by the record position information from the file, notifies the vector information display mechanism 22, and activates the record reading mechanism 24.

The activated vector information display mechanism 22 displays the contents of the record on the image display device 23 and ends the search.

〔Effect of the invention〕

As described above, the present invention has the effect of allowing a search even when the search keyword is vector information such as drawing information by having vector information in the index section within the file.

[Brief explanation of the drawing]

FIG. 1 is a file structure diagram of a file device according to an embodiment of the present invention, and FIG. 2 is a functional block diagram of the file device according to an embodiment of the present invention. 11... Auxiliary storage device, 12... Index section, 13...
・Record storage area, 14... Upper index block, 1
5... Lower index block, 21... Data processing device, 22... Vector information display control mechanism, 23... Image display device, 24... Record reading mechanism, 25...
keyboard. Agent Patent Attorney Shingetsu Uchihara

Claims (1)

[Scope of Claims] In a file device having a tree-structured index in which a keyword is added with position information in a storage device in which a record is stored, in order to randomly access records using a specific item of the record as a keyword. , A keyword that identifies a record and vector information are stored in pairs at the lowest level of a tree-structured index, and when access to a file using vector information is declared, they are stored in ascending order from the smallest keyword at the lowest level of the tree-structured index. searches the index, sequentially displays the vector information stored in pairs with the keyword on the image display device, and notifies you to stop displaying when the desired vector information is displayed on the image display device. A file device characterized in that when a keyword is displayed, the file device stops displaying the file and reads a record from record position information added to a keyword stored as a pair with vector information being displayed.