JPH0528202A - Picture data retrieval system - Google Patents

Abstract

PURPOSE:To reduce the frequency of the loading/unloading operation of an optical disk medium in an assembled type optical disk device. CONSTITUTION:A controller 1 which retrieves picture data accumulated in a cluster type optical disk device 2 in accordance with a request from a retrieval device 4, stores it in an auxiliary storage device 3 and transfers it to the retrieval device 4 by a local area network 5, reads picture data from the cluster type optical disk device 2, transfers it to the retrieval device 4, writes it into auxiliary storage device 3, reads picture data from the auxiliary storage device 3, and transfers it for the same second and succeeding read requests and updates the number of the retrieval times of picture data as file management data in the auxiliary storage device 3. When there is no empty area in the auxiliary storage device 3, picture data whose number of retrieval times is little is deleted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image data search system, and more particularly to an image data search system for searching image data stored in a collective type optical disk device.

[0002]

2. Description of the Related Art Conventionally, in this type of image data retrieval system, the amount of image data stored in an auxiliary storage device increases,
When there is no more area to write, old image data is erased in the order in which it was written, and new image data is written.

[0003]

In the above-mentioned conventional image data retrieval system, the image data is erased in the order written in the auxiliary storage device, so that the image data having a high search frequency is the same as the image data having a low search frequency. It will be erased with a probability. For this reason, there is a drawback in that an auxiliary storage device is connected and the number of operations of attaching and detaching the optical disc medium of the collective optical disc device increases.

[0004]

An image data retrieval system of the present invention retrieves image data stored in a collective optical disc device in response to a request from the retrieval device and stores the image data in an auxiliary storage device and the retrieval device. In the control device for transferring the image data to the storage device, the image data is read from the collective optical disc device and transferred to the search device and written to the auxiliary storage device when the image data read request is issued from the search device. In response to the read request, the image data is read from the auxiliary storage device and transferred, and the number of times of searching the image data is updated as file management data of the auxiliary storage device.

[0005]

The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention.

A collective type optical disk device 2 and an auxiliary storage device 3 are connected to the control device 1, and the control device 1 and the search device 4 are connected via a local area network 5.
FIG. 2 is a diagram showing file management data in the auxiliary storage device of this embodiment.

The operation of this embodiment will be described with reference to FIGS. First, when there is a read request from the search device 4,
The control device 1 reads the requested image data from the collective optical disk device 2, transfers it to the search device 4 via the local area network 5, and also writes the image data to the auxiliary storage device 3 to check the number of times the file management data is searched. Set to 1.

Next, when there is a request from the retrieval device 4 to read the same image data that was previously requested, the control device 1 has already written the requested image data in the auxiliary storage device 3, and therefore the auxiliary storage device 3 The image data is read from No. 3, transferred to the retrieval device 4, and the number of retrievals of the file management data is updated.

When the above operation is repeated and the free area of the auxiliary storage device 3 is exhausted, the number of times the file management data is searched is referred to, and the image data having a smaller number of searches are erased in order to obtain a new image. Write the data. If there are a plurality of items that have the same number of searches, the oldest data is erased in the order of writing. In this embodiment, the search device is one
Although the operation in the case of two units has been described, the same applies to the case of two or more units.

[0010]

As described above, in the image data search system of the present invention, the number of searches is added to the file management data, and when the auxiliary storage device runs out of free space, the image data having a smaller number of searches is deleted. By doing so, it is possible to reduce the frequency of attachment / detachment of the medium of the collective type optical disk device and improve the search efficiency of the system.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing file management data of an auxiliary storage device of the present embodiment.

[Explanation of symbols]

1 control device 2 Set type optical disk device 3 auxiliary storage 4 Search device 5 Local Area Network

Claims (2)

[Claims] 1. A control device for searching image data stored in a collective optical disc device in response to a request from the search device, storing the image data in an auxiliary storage device, and transferring the image data to the search device. Read-out request, the image data is read from the collective optical disc device, transferred to the search device, and written to the auxiliary storage device, and the image data is stored in the auxiliary storage for the same read request from the second time onward. An image data retrieval system, wherein the image data retrieval system reads out the image data from the device, transfers the image data, and updates the number of times the image data is retrieved as file management data in the auxiliary storage device. 2. When the auxiliary storage device runs out of free space, the image data that is searched less frequently is deleted, and the image data that is searched frequently is left.
Image data retrieval system described.