JPS6139284A - Information retrieving device - Google Patents

Abstract

PURPOSE:To shorten time spent for retrieving information files and to improve considerably retrieving efficiency by reading prescribed information files to an information file storing means in accordance with a key word input. CONSTITUTION:A main CPU1 has a code explaining means, and RAM4, a reading information file storing means, is composed of a main memory part 4a storing retrieved data and an information bufer 4b fetching a read picture file. A CRT control part 5 has V-RAM (random access memory for video data) and is connected to a CRT display part 6 which becomes a picture output device. A keyboard 8 is connected to a serial input and output control part 7, and a sub CPU9 has a reading command means. An optical disk device 13 is an information file storing means and controls through a control line 14 and a main system bus 2 with a consent of the main CPU1, a picture buffer 4b and a CRT control part 5 being independent from the main CPU1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information retrieval device that retrieves and outputs information such as documents and drawings stored in a storage device such as an optical disk.

[Prior art and its problems]

Recently, a large amount of image information such as documents 9 and drawings is read by optical two-dimensional scanning, and the read image information and corresponding search data are sequentially stored in a large storage capacity auxiliary storage medium, such as an optical disk device. The image information stored in the optical disk device can be retrieved by reading the search data from the optical disk device onto the main storage device and inputting the search code corresponding to this search data (keyword search). Image information retrieval devices have been developed that detect, read out, and output the information to an output device, such as a CRT display device.

However, the above-mentioned devices handle a large amount of image information, and the access time of optical disk devices with large storage capacity is slower than that of semiconductor memory or magnetic disk devices. Considering the time, data transfer time between each peripheral device, conversion time of compressed i-encoded image data to image data, etc., after inputting the final search code, the searched image information can be transferred from the optical disk device. There have been problems such as the time required to read out and display on a CRT display device is slow, resulting in a significant drop in image retrieval work efficiency.

[Purpose of the invention]

This invention has been made to solve the above problem, and it is possible to output a desired information file on an image output means in a short time in response to an output command from an operator after inputting a final search code. The purpose of the present invention is to provide an emotion search device that can perform the following functions. Embodiments of the present invention will be described below with reference to the drawings, taking an image information retrieval device as an example.

〔Example〕

FIG. 1 is a block diagram showing the configuration of an image information retrieval device according to an embodiment of the present invention, and 1 is a main CPU (main central control unit), which has a code interpretation means of the present invention. 2 is a main system bus, 3 is a main DMAC (main direct memory access controller), and 4 is a RAM serving as a read information file storage means of the present invention, which includes a main memory section 4a that stores search data and a read image file. Information buffer to take in (dual φ boat accessible) 4b
It consists of Reference numeral 5 denotes a CRT control section, which includes a V-RAM (undam fist access φ memory for video data) 5a, and is connected to a CR7 display section 6, which is an image output device of the present invention. Reference numeral 7 denotes a serial input/output control unit 7, to which a keyboard 8 serving as an input means of the present invention is connected. Reference numeral 9 denotes a sub-CPU (sub-central control unit), which has a read command means of the present invention. 10 is the secondary DMAC (subdirect e
11 is an optical disk control section, and 12 is a data compression/expansion section. 13 is an optical disk device serving as an information file storage means of the present invention; 1
4 is the control line, t:cy)=+7 t1:I
- main CPU via cable line 14 and main system bus 2;
With this understanding, the image bar 2 and the CRT control section 5 are controlled independently of the main CPU 1. 15 is a control line, and the sub CPU is connected via this control line 15.
With the consent of '9, the secondary DMA is independent of the secondary CPU9.
C11 controls the image buffer 4b, the optical disk device 13, and the data compression/expansion section 12. 16 is a sub-system bus connected to the image buffer 4b. The image buffer 4b is connected to the main system bus 2 and the sub system bus 16.
It has a dual port access configuration that allows information files to be written and read from both, and memory access priority is given to whichever system bus is accessed first. This priority is owned by
It remains in effect until the bus relinquishes priority or the privilege of main CPU 1 is exercised.

Next, the control operation will be explained with reference to the flowcharts of FIGS. 2 and 3. In addition, (1) to (lo),
(21) to (30) represent each step.

The amount of data for one image file to be used, for example, A4
Assuming the size (210am x 297mm), the resolution of the image is 64 (8X
8) If it is a binary image of points, the storage capacity is 498.9
I started working part-time at 6. Further, assuming that the image file area of the image buffer 4b is 8 Mbytes, a maximum of 16 image files of A4 size are stored in the image buffer 4b.

While looking at the system status displayed on the CR7 display unit 6 (
1) When the operator inputs a code into the image information retrieval device from the keyboard 8 (2), the main CPU 1 starts analyzing the input code 3), and then determines whether the control is finished (4) . If this judgment is YES, the control is ended; if NO, it is judged whether or not a search command for image information has been issued; if No, it is judged whether to start display control (El); Return to step (1), and if YES, display the searched image file on the CR7 display section 6 and return to step (1) (7)
, On the other hand, when a search command for image information is issued in step (5), based on the search data of the optical disk device 13 read out onto the main storage section 4a, a keyword matching the keyword inputted from the lower part of the keypad 8 is determined. A search for an image file is started (8), and this search data is transferred and stored in the main storage section 4a each time an optical disk medium is set in the optical disk device 13. Next, the number of detected image files is
The maximum number of files that can be stored in the image buffer 4b (
(hereinafter referred to as the number of stored images), and compared with, for example, 16 (
8) If the number of image files detected in this judgment is larger, the detected image file name.

In order to display the processing status such as the number of detected image files on the CRT display section 6, return to step (1) and repeat steps (1) to (8).
) is repeated, and the number of detected image files is sequentially reduced according to the keyword input by the operator. On the other hand, if the number of detected image files is less than the number of images stored as determined in step (9), the number of detected image files is decreased sequentially according to the keyword input by the operator. 10)
, in the case of NO, the main CPU 1 sends a read command to the sub CPU 9 to read the detected image file that is not on the image buffer 4b from the optical disk device 13 (11), YES.
In this case, the process returns to step (1) to wait for a display command from the operator.

When a search command from the main CPUI is input in step (11), the flow shown in Figure 3 starts, (21), the command from the main CPU is analyzed (22), and whether or not an image file transfer request has been made. 23), if NO, return to step (21) to wait for a transfer request from the main CPU 1; if YES, that is, if the main CPU 1
When there is a transfer request from 24), refer to the transfer request image file table in the format shown in FIG. Check whether the image file has been read out using the flag U in the transfer request image file table (if the flag U of the image file is 0, it has not been read; if the flag U is 1, it is considered to have been read) (25)
, if the flag U is 1, the process returns to step (21) and the main CPU
If the flag U is 0, it is determined whether the image file has been transferred from the optical disk device 13 to the image buffer 4b (2G). If YES, the process returns to step (21) and the main CPU Wait for instructions and press N-
If it is 0, a transfer request has been issued by flag U, but
The process begins to read out image files that have not yet been read out onto the image buffer 4b from the optical disk device 13.
Whether or not the image file read from the optical disk device 13 by the sub CPU 9 is registered with a compressed code is determined by reading the image file attribute t of the transfer request image file table shown in FIG. 4, which is also created on the image buffer 4b. 27), if the image file is registered as a compression code on the optical disk device 13, set the data compression/expansion section 12 to decompression mode 2B).
If the image file is registered with a normal code on the optical disk device 13, the data compression Φ expansion unit 12 should be set to pass mode (29), and then the sub CPU 9 should register the sub D
MAC 10, optical disk control unit 11, image buffer 4b
The sub DMAC 10 sends a command to the optical disk device 13.
It is set so that the image data read from the image buffer 4b can be transferred to the image buffer 4b through the data compression/expansion section 12. When this setting is completed, the sub CPU 9 gives control of the sub system bus 16 to the sub DMAC 10 and starts it up. Then, under the control of the secondary DMACl0, the optical disk device 13
image buffer 4b via data compression/expansion section 12.
Image file transfer will begin. When the transfer of one image file is completed, control of the secondary system bus 16 is transferred to the secondary CP.
, return to U9. At this time, the sub CPU 9 sets flag U of the transfer request image file table corresponding to the transferred image file to 1, and returns to step (26) (30
). In this way, the operations in steps (21) to (30) operate independently of the main CPUI under the control of the sub CPU 9, so the process of reducing the number of detected image files by further inputting keywords continues. In addition, it is possible to quickly transfer a desired image file onto the image storage 2a 4b.

In the above embodiment, a machine was described in which an image file read from the optical disk device 13 was stored in the image buffer 4b, but the present invention can also be applied to binary information, such as code information handled by a word processor or the like.

〔Effect of the invention〕

As explained above, the present invention includes a code interpretation means for interpreting a keyword inputted from an input means and transmitting a search command for a desired information file, and search data and information for an information file stored in the information file means. Readout information file storage means for temporarily storing an information file to be read from the file storage means, and readout command means for receiving a search command and reading out readable information files according to the storage capacity of the readout information file storage means. Therefore, the desired information file is read into the information file storage means in response to the keyword input, so the output request from the operator can be immediately responded to, the time required to search the information file is shortened, and the search efficiency is greatly improved. It has the advantage that it can be improved.

[Brief explanation of the drawing]

FIG. 1 is a configuration block diagram of an image information retrieval device showing an embodiment of the present invention, FIGS. 2 and 3 are flowcharts explaining the control operation of FIG. 1, and FIG. 4 is a transfer request image of the present invention. FIG. 3 is a diagram illustrating the format of a file table. In the figure, 1 is the main CPU, 2 is the main system bus, and 3 is the main DM.
AC14 is a RAM, 4a is a main storage unit, 4b is an image buffer, 5 is a CRT control unit, 5a is a V-RAM, 8c is a CR
T display section, 7 is serial input/output section, 8 is keyboard, 9
10 is a sub CPU, 10 is a sub DMAC 111 is an optical disk control section, 12 is a data compression/expansion section, 13 is an optical disk device, 14 and 15 are control lines, and 16 is a sub system bus. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] In an information retrieval device that searches an information file stored in an information file storage means according to a keyword inputted from an input means and outputs the searched information to an image output means, the keyword inputted from the input means is interpreted to obtain desired information. code interpretation means for sending out a file search command; readout information file storage means for temporarily storing the search data of the information file stored in the information file means and the information file read from the information file storage means; An information retrieval device comprising: read command means for receiving a command and reading a readable information file according to the storage capacity of the read information file storage means.