JPH0319014A - Area control system for optical disk medium - Google Patents

Abstract

PURPOSE:To shorten the time required for reference, update, etc., of the optical disk area control information by using a high speed secondary storage. CONSTITUTION:An automatic medium recognizing means 1 is set to an optical disk device 6 to automatically recognize the information on an optical disk medium. An automatic copy means 2 copies automatically the optical disk area control information on the optical disk medium to a high speed secondary storage 8 based on the recognizing result of the means 1. An area control information reference means 3 refers to the optical disk area control information on the storage 8 copied by the means 2. An area control information updating means 4 updates the optical disk area control information on the storage 8 copied by the means 2. Then an optical disk area control information updating means 5 updates the optical disk area control information on the optical disk medium when an update request is produced for the optical disk area control information according to a securing request for a file area. In such a constitution, it is possible to shorten the time required for reference, update, etc., of the optical disk area control information.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an area management method for an optical disk medium, and more particularly to an area management method for an optical disk medium in a computer system.

[Conventional technology]

Conventionally, in this type of area management method for optical disk media, optical disk area management information on the optical disk medium (information indicating area information on the optical disk medium of files written on the optical disk medium, etc.) is directly transmitted at the request of the optical disk usage program. It was referenced and updated.

FIG. 2 is a block diagram showing the configuration of an example of such a conventional area management system for an optical disc medium.

The optical disk area management information on the optical disk medium set in the optical disk device F22 is cptzcentral.
The area management information reference/update means 21 in the CPU 23 directly refers to and updates the information based on a request from the optical disk usage program 24 executed in the CPU 23.

[Problem to be solved by the invention]

In the conventional optical disk medium area management method described above, the amount of information on the optical disk area management information on the optical disk medium to be referenced and updated is large and complex, so the average time for one input/output of the optical disk area management information is short. Therefore, there is a drawback that a lot of time is required for processing related to area management of the optical disk medium.

In view of the above points, an object of the present invention is to provide a high-speed secondary storage device (
Reduces the time required to reference and update optical disk area management information (processing related to optical disk media area management) by using a magnetic disk device, etc. used to perform processing related to area management of optical disk media at high speed. An object of the present invention is to provide an area management method for an optical disk medium that can perform the following tasks.

[Means to solve the problem]

The area management method for an optical disk medium of the present invention includes an automatic medium recognition means that automatically recognizes that an optical disk medium is set in an optical disk device and optical disk medium information on the optical disk medium, and the above-mentioned automatic medium recognition means using the automatic medium recognition means. Automatic transfer means that automatically transfers the optical disk area management information on the optical disk medium to the high-speed secondary storage device based on the ml, and the optical disk area management information on the high-speed secondary storage device transferred by this automatic transfer means. area management information reference means for updating the optical disk area management information on the high-speed secondary storage device transferred by the automatic transfer means; an optical disk device area management information updating means that is activated by the area management information updating means and updates the optical disk area management information on the optical disk medium set in the optical disk device when a corresponding update request for optical disk area management information is generated; have

[Effect]

In the optical disk medium area management system of the present invention, the automatic medium recognition means automatically recognizes that an optical disk medium is set in the optical disk device and the optical disk medium information of the optical disk medium, and the automatic transfer means automatically recognizes the optical disk medium information of the optical disk medium. Based on the above recognition by the means, the optical disk area management information on the optical disk medium is automatically transferred to the high speed secondary storage device, and the area management information reference means transfers the optical disk area management information on the optical disk medium onto the high speed secondary storage device onto which the area management information has been transferred by the automatic transfer means. Referring to the area management information, the area management information updating means writes high-speed secondary data t'! on the high-speed secondary storage device transferred by the automatic transfer means. gm
The above optical disc area management information is updated, and the optical disc device area management information updating unit is activated by the area management information updating unit and set in the optical disc device when an update request for optical disc area management information is generated in response to a 611 request for file area retention. The optical disk area management information on the optical disk medium that has been updated is updated.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of an area management system for an optical disk medium according to the present invention.

The area management method for an optical disk medium of this embodiment is configured to include an optical disk device 6, a CPU 7, and a high-speed secondary storage device 8 (a computer system in which the area management method for an optical disk medium of the present invention is realized). It is assumed that there are one or more optical disk devices (optical disk device 6 in this example) and a high-speed secondary storage device (high-speed secondary storage device 8 in this example).

The CPU 7 automatically informs the optical disc device 6 that the optical disc medium is set in the optical disc device 6 and the optical disc medium information on the optical disc medium (information indicating the identification information, type, etc. of the optical disc medium). automatic medium recognition means 1 that recognizes (without the need for any instructions other than the setting of an automatic transfer means 2 for transferring information to the optical disk, an area management information reference means 3 for referring to the optical disk area management information on the high-speed secondary storage device 8, and an area management information for updating the optical disk area management information on the high-speed secondary storage device 8. The update means 4 and the optical disk device 6 are activated by the area management information update means 4 when a request to update the optical disk area management information is generated in response to a request to secure a file area (when a file area is secured on the optical disk medium).
The optical disc device area management information updating means 5 updates the optical disc area management information on the optical disc medium set in the optical disc device 6, and the optical disc usage program 9 uses the file on the optical disc medium set in the optical disc device 6. It is configured.

Next, the operation of the area management system for the optical disk medium of this embodiment configured as described above will be explained.

First, when an optical disk medium is set in the optical disk device 6, the automatic medium recognition means 1 in the CPU 7 automatically recognizes that the optical disk medium has been set and the optical disk medium information on the optical disk medium.

Next, based on the recognition of this optical disk medium information, etc., the optical disk area management information on the optical disk medium is transferred onto the high-speed secondary storage device 8 by the automatic transfer means 2 (
During this transfer, the structure of the optical disc area management information on the optical disc medium is changed so that the optical disc area management information can be input and output at high speed. Furthermore, corresponding optical disc medium information is also transferred to the high-speed secondary storage device 8 along with the optical disc area management information, if necessary).

On the other hand, when a request to refer to an area within a file on the optical disk medium is generated from the optical disk using programmer 1, 9,
The optical disk area management information f[i,'l<area management information reference means 3 refers to the optical disk area management information regarding the optical disk in question on the high-speed secondary storage device 8, and acquires the area information of the area related to the reference request.

The optical disc usage program 9 that has acquired the area information from the area management information reference means 3 references the area on the optical disc medium based on the area information.

In addition, the optical disk usage program 9 requests an update of the optical disk area management information (excluding the update request of the optical disk area management information accompanying the file area 6' preservation request. The optical disk area based on the change of COD (End 0fData) in the file area) When a request for updating management information, etc.) occurs, only the optical disk area management information of the high-speed secondary storage device 81 is updated by the area management information updating means 4 (the information on the optical disk medium set in the optical disk device 6 (Optical disk 61 area management information is not updated)
.

Further, when a request to update optical disk area management information is generated from the optical disk usage program 9 in response to a request to secure a file area, the area management information update means 4 updates the optical disk area management information on high-speed secondary storage jQy, is updated, the optical disk device area management information updating means 5
is started.

The activated optical disk device area management information updating means 5 updates the optical disk area management information on the optical disk medium set in the optical disk device 6 at the same time as updating the optical disk area management information on the high speed secondary storage device 8. (Since the request to update the optical disk area management information associated with the need to secure the file area is more important than the request to update the optical disk area management information based on the change of COD in the file area, the optical disk medium (The optical disc area management information of the disc is updated).

〔Effect of the invention〕

As explained above, the present invention uses a high-speed secondary storage device that can input and output optical disk area management information at high speed, and uses automatic medium recognition means, automatic transfer means, area management information reference means, and area management information. By providing an update means and an optical disk device area management information (long history new means), it is possible to shorten the time required to refer to and update the optical disk area management 1) report (processing related to area management of optical disk media). There is.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of an example of a conventional area management system for an optical disk medium. In the figure, 1... automatic medium recognition means, 2... automatic transfer means, 3... area management information reference means, 4... area management information update means, 5... optical disk device area management information update Means, 6...
- Optical disk device, 7...CPU. 8: High-speed secondary recording TA device; 9: Optical disk usage program.

Claims (1)

[Claims] An automatic medium recognition means that automatically recognizes that an optical disk medium is set in an optical disk device and optical disk medium information on the optical disk medium, and an automatic medium recognition means that automatically recognizes that an optical disk medium is set in an optical disk device, and an automatic medium recognition means that automatically recognizes the optical disk medium information on the optical disk medium, and the optical disk according to the above recognition by the automatic medium recognition means. automatic transfer means for automatically transferring optical disk area management information on a medium to a high-speed secondary storage device; and area management information reference for referencing the optical disk area management information on the high-speed secondary storage device transferred by this automatic transfer means. means, area management information updating means for updating optical disk area management information on the high-speed secondary storage device transferred by the automatic transfer means, and optical disk area management information accompanying a file area reservation request. and an optical disc device area management information updating unit that is activated by the area management information updating unit and updates the optical disc area management information on the optical disc medium set in the optical disc device when an update request occurs. An area management method for optical disk media.