JPS63282976A - Optical disk cartridge - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical disc cartridge, and more specifically, to an optical disc cartridge used for loading an optical disc, which is an external storage device of a computer.

[Conventional technology]

FIG. 2 shows an optical disk cartridge used in a conventional write-once type optical disk device as shown in Japanese Utility Model Application Publication No. 195586/1986. In the figure, the optical disk cartridge f1> has an optical disk medium ( 2
) are stored. In addition, optical disc cartridges (
1) is provided with a shutter (3) that opens and closes a window through which the optical disc device accesses the optical disc medium (2).

With the above configuration, when the optical disc cartridge (1) is installed in the optical disc device, the optical disc device opens the shutter (3) and performs recording/reproducing operations on the optical disc medium (2). From the perspective of data processing, this recording/reproducing operation involves writing and reading data on the optical disk medium (2), and the track/sector position of the recorded data on the disk (2). This operation consists of an operation of recording a directory (hereinafter referred to as a directory) in an area allocated on the optical disk medium (2) as a directory area.

Approximately 10% of the entire optical disk medium (2) is allocated to the directory area, and measures such as double writing are taken to ensure reliability.

When deleting or editing data, record the data in a new area, delete the data in the old recording area, and then
After recording information such as a new directory in a new area of the directory area, the old information is deleted.

In other system configurations, optical disk media (
2) In order to avoid the complicated process of accessing the above directory area every time, a separate magnetic disk device is installed, and IJ management is performed using this magnetic disk during a series of processes. The procedure was to write to the decreft area on the medium (2).

[Problem that the invention seeks to solve]

In conventional optical disk cartridges as described above, when a large number of directory areas are allocated, the data recording area becomes small, and problems such as the directory cannot be written even if data is recorded in a small directory area occur. Such a configuration had problems such as the need for a separate magnetic disk.

This invention was made to solve the above-mentioned problems. It simplifies the management of directories, etc. in write-once type optical disk drives, makes effective use of the data recording area, and also allows for the use of separately installed magnetic disk drives. The purpose is to obtain an optical disc cartridge that does not need to be used.

[Means for solving problems]

The optical disk cartridge according to the present invention is of a write-once type, and is provided with an erasable, writable, and readable medium in addition to an optical disk medium, so that it can be accessed by an optical disk device.

[For production]

In this invention, disk management is simplified by storing disk management information and the like in an erasable, writable, and readable medium.

〔Example〕

FIG. 1 shows an embodiment of the present invention, and shows an optical disk medium (
The medium (4) stored with 2) is erased.

It consists of a programmable and readable EEPROM (electrically rewritable non-volatile memory). Contact (5
) is for the optical disk device to access FJEPROM+4+.

In addition, the same reference numerals as in FIG. 2 indicate the same parts.

Note that illustration of the amount of optical discs loaded is omitted.

With the above configuration, when the optical disc cartridge (1) is installed in the optical disc device, the optical disc device opens the shutter (3) and accesses the optical disc medium (2).

At the same time, the optical disc device uses the contact (5) to
Access PROM (4). The management information of the optical disk is recorded in the EEPROM (4), and the optical disk medium (21K) is accessed based on this content.

When changing the management information, it is done by rewriting the contents of the EEFROM+41.

Data processing is performed as follows. The entire area of the optical disk medium (2) is allocated as the data recording area, and during recording, after recording data on the disk medium (2), the EEPROM is allocated as a directory area.
(4) Record directory information.

When deleting or editing, data is recorded in a new separate area on the optical disk medium (2), and then new directory information is rewritten to the old directory location of the EEPROM (41).

Further, in the above embodiment, an EEPROM is used as an erasable, writable and readable medium, but the same effect can be obtained by using a magnetic storage medium.

Although the contact point (5) was not specifically described, in addition to the electrical contact point, it is also effective to use other means such as the use of a photoelectric conversion element for the signal contact point when considering reliability.

〔Effect of the invention〕

As described above, according to the present invention, disc management information can be erased and written inside the cartridge.

Since the information is written on a readable medium, the management information is always recorded in the same position, which has the effect of greatly simplifying disk management.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of one embodiment of the present invention, and FIG.
The figure shows a conventional optical disc cartridge, and (a)
is a partially cutaway front view, (b) is a top view, and (c) is a side view. (1) - Optical disc cartridge, (2) - Optical disc medium, (4) - EEPROM (medium). In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (3)

[Claims] (1) An optical disc cartridge containing an optical disc medium and another medium that can be erased, written to, and read from. (2) The optical disk cartridge according to claim 1, wherein the other medium is an EEPROM (electrically rewritable nonvolatile memory). (3) The optical disk cartridge according to claim 1, wherein the other medium is a magnetic storage medium.