KR950000133B1 - Method of recording and reproducing optical record carrier - Google Patents

Abstract

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Description

Method of recording and reproducing optical record carrier

The present invention relates to a method of recording and reproducing an optical recording medium, and more particularly, to a method of recording and reproducing an optical recording medium to shorten the time required for recording and reproducing a signal.

Background Art Optical discs, which are commercially available optical discs, have been used in various products using optical discs because of their high recording density, erasable recording and reproduction, and the like.

This signal transmission process of the optical recording medium is generally performed by repeating the process of recording → playback → erasure.

However, in the conventional general magnetic recording medium other than the optical recording medium, the erasing and recording are performed simultaneously in the recording, reproducing, and erasing signal transmission processes. Signal recording is performed by continuously recording new signals on the recorded part. Signal recording technology is called over-write. In the case of optical discs that are currently commercially available, both magneto-optical and phase-transformed discs apply this superimposed recording method. I'm not doing it. The main reason is the limitation of the technology for forming the recording film of the optical recording medium. In addition, a technique of applying an overlapping recording method by improving the structure of a recording film of an optical disc is under development, but has not been commercialized as a product.

Therefore, the recording of the optical recording medium is repeated by the process of erasing, erasing, confirming, recording, confirming, and reproducing. When the signal is recorded on the optical recording medium, the erasing process is different from that of the general magnetic recording medium. There has been a problem that the recording speed becomes slow, and the speed decreases even when the data is reproduced in order to transfer the data recorded on the optical recording medium.

An object of the present invention is to record data during the time used to transfer recording data between an optical disk drive and a computer main body (CPU), which is a device using an optical disk, when an optical magnetic disk is inserted into a magnetic optical disc drive (MODD). During the pause time without transmitting the data, the erasure and erasure check process for the area in which the recording signal to be erased on the magneto-optical disk exists is performed in advance. It is an object of the present invention to provide a method of recording and reproducing an optical recording medium capable of shortening a signal transmission time.

The object of the present invention is to insert an erasable and recordable optical recording medium into an optical disk drive connected to a computer main body to record or reproduce information, so that the TOC is applied during the idle time when no signal is recorded or reproduced between the computer main body and the optical disk drive. Performs at least one of erasing and erasing confirmation of sectors for which information is not read, and only records and plays without performing erasing and erasing confirmation in the process of recording or reproducing signals between the computer body and the optical disc drive. It is achieved by providing a method for recording and reproducing an optical recording medium, which makes it possible to shorten the time required for recording and reproduction.

Hereinafter, the recording and reproducing method of the optical recording medium according to the present invention will be described in detail.

First of all, it is understood from the International Standard that the magneto-optical disk drive is used, which takes about 15% to 25% of the total time required for operating the entire system. Can be.

In contrast, when the time required for transmitting the recording signal is 15% to 25%, it can be seen that there is a 75% to 85% signal transmission pause time. The pause time is the magneto-optical disk which is a magneto-optical recording medium. Is inserted into the magneto-optical disk drive, and the information to be erased on the magneto-optical disk is erased in advance during the rest period, and the signal is recorded under the control of the computer main body (CPU). It is possible to shorten the time required for signal recording and playback by performing only the process of recording → recording confirmation → playback without performing the erasing and erasing confirmation process during the process, namely erasing → erasing confirmation → recording → recording confirmation → playback. I made it possible.

According to the International Standard (ISO), an optical disc is divided into several sectors with 1024 bytes or 512 bytes as one sector, and each sector is given a unique address (for example, a track number or a sector number). When a user writes, a sector is used larger than the size of a file recorded using at least one sector.

For example, when one sector has a size of 1024 bytes, three sectors (1024 × 3 = 3072 bytes) are used to record 3000 byte data, thereby using a sector larger than the size of the data. The file name of the user and the address of the sector in which it is recorded are recorded in the TOC (Table of Content) area.

Here, when the user issues a command to read the recorded file, the TOC finds the corresponding file and reads data from the corresponding sector. In general, TOC is duplicated on two parts of the disk to prevent mistakes or errors, and when a new disk is inserted, the TOC information is read in advance and stored (resident) in a semiconductor memory (main memory) to increase the speed of use. Will be promoted.

For information in the TOC, the file name, creation date and time, size, sector address and other information are recorded. Other information includes information having various functions, especially hidden, open or erased files.

According to the present invention, after confirming that the erased file is in the file information in the TOC, and after erasing and confirming the sectors constituting the erased file, the corresponding file information in the TOC is deleted or information indicating complete erasure in other information fields of the file information is deleted. By recording, when a user records another file, it records in a sector which does not exist in the TOC or in a sector in which complete erasing information is included in other information in the file information.

As described above, the present invention determines and erases sectors that the optical disk drive does not need to use, such as 100% erasing or 50% erasing by the pre-adjustment function during idle time when the recording and reproducing process is not performed. In the case of reproducing, it is possible to improve the use efficiency of the magneto-optical recording medium by shortening the time required for recording and reproducing by performing only the recording and reproducing process immediately without going through the erasing and erasing confirmation process. You can get the same effect without doing it.

Claims (1)

In the case of recording or reproducing information by inserting an erasable and recordable optical recording medium into an optical disc drive connected to the computer main body, the information is not recorded by reading the TOC during the idle time when no signal is recorded or reproduced between the computer main body and the optical disc drive. Performs at least one of the sector erase and erase check process, and the process of recording or reproducing the signal between the computer body and the optical disc drive requires recording and reproducing by performing only the recording and reproducing process without performing the erase and erase check process. The recording and reproducing method of the optical recording medium, characterized in that to shorten the time required.