KR980004527A

KR980004527A - Erase type magneto-optical disk and its recording / reproducing apparatus

Info

Publication number: KR980004527A
Application number: KR1019960025139A
Authority: KR
Inventors: 조복현
Original assignee: 구자홍; Lg 전자주식회사
Priority date: 1996-06-28
Filing date: 1996-06-28
Publication date: 1998-03-30

Abstract

본 발명의 소거형 광자기 디스크는, 트랙 중앙에 어드레스 데이터용 피트가 일정격으로 프리포맷한 것으로, 상기 디스크에 데이터를 기록 또는 재생하기 위해서 기록/재생장치에는 픽업을 통해 디스크로부터 반사된 빛이 송출되면 상기 어드레스 데이터를 분리하는 분리부와, 상기 어드레스 데이터에 따라 에러를 보상하여 트랙킹 서보와 포커싱 서보를 제어하기 위한 서보제어부가 연결되며, 이와 같은 구성을 통해 상기 어드레스 데이터 피트와 정보 데이터 피트를 겹치게 기록함으로써 기록밀도의 저하를 방지할 수 있으며, 상기 어드레스 데이터를 이용하여 스핀들 서보와, 트랙킹 서보 및 포커싱 서보를 제어함으로써 광학계를 보다 정확하게 구동할 수 있는 효과가 있다.In the erase-type magneto-optical disc of the present invention, a pit for address data is preformatted at the center of a track, and in order to record or reproduce data on the disc, light reflected from the disc through a pickup is supplied to the recording / And a servo control unit for controlling the tracking servo and the focusing servo in accordance with the address data to compensate for the error according to the address data is connected to the servo control unit and the address data pit and the information data pit It is possible to prevent a decrease in recording density by overlapping recording, and the optical system can be driven more accurately by controlling the spindle servo, the tracking servo, and the focusing servo by using the address data.

Description

Erase type magneto-optical disk and its recording / reproducing apparatus

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제3도는 본 발명에 의한 소거형 광자기 디스크의 단면 구조를 도시한 것이다.FIG. 3 shows a sectional structure of an erasable magneto-optical disc according to the present invention.

제4도는 본 발명에 의한 소거형 광자기 디스크의 재생파형을 도시한 것이다.FIG. 4 shows a reproduction waveform of the erasure-type magneto-optical disc according to the present invention.

제5도는 본 발명에 의한 소거형 광자기 디스크에 정보를 기록 또는 재생하기 위한 소거형 광자기 디스크의 기록/재생장치를 도시한 것이다.FIG. 5 shows a recording / reproducing apparatus of an erasable magneto-optical disk for recording or reproducing information on an erasable magneto-optical disk according to the present invention.

제6도는 본 발명의 소거형 광자기 디스크의 기록/재생장치중 서보 제어부의 상세 구성을 도시한 것이다.FIG. 6 shows a detailed configuration of the servo control unit of the recording / reproducing apparatus of the erasable magneto-optical disk of the present invention.

Claims

And a pit for address data is preformatted at the center of the track with a rating of one.

The erasable magneto-optical disc according to claim 1, wherein the pit has a width of 0.3 m or less.

An erase-type magneto-optical disc recording / reproducing apparatus for recording and reproducing desired information data on a disc pre-formatted with a pit for address data at the center of the track, wherein when light reflected from the disc is transmitted through the pickup, And a servo control unit for controlling the tracking servo and the focusing servo by compensating an error according to the address data.

The apparatus of claim 3, wherein the demultiplexer is a band-pass filter.

The servo control unit according to claim 3, wherein the servo control unit comprises: a comparison unit for comparing an actual tracking value, a focusing value, and the address data value when the light reflected from the disc is picked up; And an error correcting unit for correcting the erroneous data recorded on the recording medium.

※ Note: It is disclosed by the contents of the first application.