KR970012395A - Tracking Control of Optical Disc Drive - Google Patents

Tracking Control of Optical Disc Drive Download PDF

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Publication number
KR970012395A
KR970012395A KR1019950027719A KR19950027719A KR970012395A KR 970012395 A KR970012395 A KR 970012395A KR 1019950027719 A KR1019950027719 A KR 1019950027719A KR 19950027719 A KR19950027719 A KR 19950027719A KR 970012395 A KR970012395 A KR 970012395A
Authority
KR
South Korea
Prior art keywords
track
optical disc
disc drive
following control
search operation
Prior art date
Application number
KR1019950027719A
Other languages
Korean (ko)
Other versions
KR0155871B1 (en
Inventor
윤형덕
Original Assignee
김광호
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019950027719A priority Critical patent/KR0155871B1/en
Publication of KR970012395A publication Critical patent/KR970012395A/en
Application granted granted Critical
Publication of KR0155871B1 publication Critical patent/KR0155871B1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08529—Methods and circuits to control the velocity of the head as it traverses the tracks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in only
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

본 발명은 광디스크 드라이브의 트래킹 제어 방법에 관한 것으로, 특히 광디스크 드라이브의 트랙 인입 서보 제어 방법에 관한 것이다. 목표 본 발명의 목적을 달성하기 위해 목표 트랙과 현재 트랙의 차를 비교하여 탐색 동작이 완료되었는가를 판단해서 탐색 동작중이던 속도 제어 연산을 수행하여 그 결과를 출력하고, 탐색 동작이 완료되면 트랙인입을 시도하여 트랙 추종 제어를 수행하는 제1단계; 트랙 인입을 시도하는 제1단계 후, 오프 트랙이 발생했는 가를 판단해서 오프 트랙의 발생시 트랙 추종 제어 신호를 0로 하여 트랙 추종 제어 값을 출력하는 제2단계, 트랙 인입 재 시도 완료 후 트랙 추종 제어 신호를 출력하는 제3단계를 포함하는 것을 특징으로 한다. 본 발명에 의하며 광 디스크 드라이브의 트랙 탐색 동작후 트랙 인입시 오프 트랙이 발생한 경우에도 인접 트랙에의 안정된 트랙 인입이 가능하도록 할 수 있는 잇점이 있다.The present invention relates to a tracking control method for an optical disc drive, and more particularly, to a track input servo control method for an optical disc drive. In order to achieve the object of the present invention, the difference between the target track and the current track is determined to determine whether the search operation is completed, the speed control operation during the search operation is performed, and the result is output. A first step of attempting to perform track following control; After the first step of attempting track in, the second step of determining whether an off track has occurred and outputting a track following control value by setting the track following control signal to 0 when the off track occurs; And a third step of outputting a signal. According to the present invention, there is an advantage that stable track insertion into adjacent tracks can be made even when an off track occurs during track entry after the track search operation of the optical disc drive.

Description

광디스크 드라이브의 트래킹 제어 방법Tracking Control of Optical Disc Drive

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 광디스크 드라이브의 트래킹 제어 방법을 수행하는 장치를 보이는 블럭도.1 is a block diagram showing an apparatus for performing a tracking control method for an optical disk drive of the present invention.

Claims (1)

광디스크 드라이브의 트랙 인입 서보 제어 방법에 있어서, 목표 트랙과 현재 트랙의 차를 비교하여 탐색 동작이 완료되었는가를 판단해서 탐색 동작중이면 속도 제어 연산을 수행하여 그 결과를 출력하고, 탐색 동작이 완료이면 트랙 인입을 시도하여 트랙 추종제어를 수행하는 제1단계; 상기 트랙 인입을 시도하는 제1단계후, 오프 트랙이 발생했는 가를 판단해서 오프 트랙의 발생시 트랙 추종 제어 신호를 제로로 하여 트랙 추종 제어 값을 출력하는 제2단계; 상기 제2단계에서 트랙 인입 재 시도 완료 후 트랙 추종 제어 신호를 출력하는 제3단계를 포함하는 것을 특징으로 하는 광디스크 드라이브의 트래킹 제어 방법.In the track input servo control method of an optical disc drive, a difference between a target track and a current track is determined to determine whether a search operation is completed, and if the search operation is performed, a speed control operation is performed and the result is output. A first step of performing track following control by attempting to pull in a track; A second step of determining whether an off track has occurred after the first step of attempting to pull in the track and outputting a track following control value by setting the track following control signal to zero when the off track is generated; And a third step of outputting a track following control signal after completion of the track retry retry in the second step. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950027719A 1995-08-30 1995-08-30 Tracking control method of optical disk drive KR0155871B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950027719A KR0155871B1 (en) 1995-08-30 1995-08-30 Tracking control method of optical disk drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950027719A KR0155871B1 (en) 1995-08-30 1995-08-30 Tracking control method of optical disk drive

Publications (2)

Publication Number Publication Date
KR970012395A true KR970012395A (en) 1997-03-29
KR0155871B1 KR0155871B1 (en) 1998-12-15

Family

ID=19425265

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950027719A KR0155871B1 (en) 1995-08-30 1995-08-30 Tracking control method of optical disk drive

Country Status (1)

Country Link
KR (1) KR0155871B1 (en)

Also Published As

Publication number Publication date
KR0155871B1 (en) 1998-12-15

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