KR970076579A - Sled control device and method of optical disc recorder / player - Google Patents

Sled control device and method of optical disc recorder / player Download PDF

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Publication number
KR970076579A
KR970076579A KR1019960018017A KR19960018017A KR970076579A KR 970076579 A KR970076579 A KR 970076579A KR 1019960018017 A KR1019960018017 A KR 1019960018017A KR 19960018017 A KR19960018017 A KR 19960018017A KR 970076579 A KR970076579 A KR 970076579A
Authority
KR
South Korea
Prior art keywords
signal
output
sled
input buffer
optical disc
Prior art date
Application number
KR1019960018017A
Other languages
Korean (ko)
Other versions
KR0176920B1 (en
Inventor
김대영
Original Assignee
구자홍
Lg 전자주식회사
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 구자홍, Lg 전자주식회사 filed Critical 구자홍
Priority to KR1019960018017A priority Critical patent/KR0176920B1/en
Publication of KR970076579A publication Critical patent/KR970076579A/en
Application granted granted Critical
Publication of KR0176920B1 publication Critical patent/KR0176920B1/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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
    • 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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0953—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks

Abstract

본 발명은 광디스크 기록/재생기에 관한 것으로, 특히 디스크의 편심에 의한 슬레드 서보의 불안정을 제거하여 광픽업의 안정된 슬레드 서보를 구현하기 위한 광디스크 기록/재생기의 슬레드 제어장치에 관한 것으로, 트랙킹 에러신호를 입력받는 입력버퍼부와, 상기입력버퍼로부터 출력되는 신호가 허용 편심량 범위를 넘어서면 이를 클리핑하는 클리핑부와, 상기 클리핑부의 출력 및 입력버퍼부의 출력을 인가받아 이를 가산하는 가산기와, 상기 가산기의 출력에 따라 슬레드 모터를 구동하는 모터 구동부로 구성함으로써, DVD를 사용하여 광픽업장치의 대물렌즈가 반경방향으로 이동하는 경우에는 검출된 신호가 허용 편심량범위를 완전히 벗어난 큰 AC 신호가 되므로 이때는 슬레드 모터를 그 신호에 대해 둔감하게 작용하도록 하고, 디스크의 편심에 의한 경우에는 원래의 트래킹 에러신호에 클리핑된 신호를 역 극상으로 가산함으로써 이 신호에 의해 슬리드 모터를 제어하게 되어 안정된 스레드 제어가 되도록 하는 효과가 있게 된다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc recorder / player, and more particularly to a sled control device of an optical disc recorder / player for realizing a stable sled servo of an optical pickup by eliminating instability of the sled servo due to disc eccentricity. An input buffer unit for receiving an error signal, a clipping unit for clipping the signal output from the input buffer when it exceeds an allowable eccentricity range, an adder for receiving and adding the output of the clipping unit and the output of the input buffer unit, and When the objective lens of the optical pickup device is moved in the radial direction by using a DVD, the detected signal becomes a large AC signal that is completely out of the allowable eccentricity range. In this case, the sled motor is insensitive to the signal, and the disk is eccentric. There is possible an effect such that the sleeve is controlled to de-stabilized thread motor controlled by a signal by adding a signal clipped to the original tracking error signal in the reverse case of superfine.

Description

광디스크 기록/재생기의 슬레드 제어장치 및 방법Sled control device and method of optical disc recorder / player

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

제2도는 본 발명 광디스크 기록/재생기의 슬레드 제어장치를 나타낸 블록도.2 is a block diagram showing a sled control apparatus of the optical disc recorder / player of the present invention.

Claims (2)

광디스크 기록재생기의 서보제어방법에 있어서, 트레킹 제어신호가 DC성분은 작고, 디스크 편심에 의하여 발생하는 AC성붕의 시호가 커져 상기 트래킹 제어신호가 디스크의 회전주기에 따라 +값과 -값을 반복하는 신호에 대하여 AC신호성분을 줄여 슬레드 제어신호로 사용하는 것을 특징으로 하는 광디스크 기록/재생기의 슬레드 제어방법.In the servo control method of an optical disc recorder, a tracking control signal has a small DC component and a large arc of AC shelf caused by disc eccentricity, and the tracking control signal repeats + and − values according to the rotation period of the disc. A sled control method of an optical disc recorder / player, characterized by reducing an AC signal component to a signal and using the same as a sled control signal. 트랙킹 에러신호를 입력받는 입력버퍼부와 상기 입력버퍼부로부터 출력되는 신호가 +와 -방향으로 일정값 이상이 되면 클리핑하는 클리핑부와, 상기 클리핑부의 출력 및 입력버퍼부의 출력을 인가받아 이를 가산하는 가산기와, 상기 가산기의 출력에 따라 슬레드 모터를 구동하는 모터 구동부로 구성하여 된 것을 특징으로 하는 광디스크 기록/재생기의 슬레드 제어장치.When the input buffer unit receiving the tracking error signal and the signal output from the input buffer unit exceeds a predetermined value in the + and-directions, the clipping unit for clipping, and the output of the clipping unit and the output of the input buffer unit is applied to add it And an adder and a motor driver for driving a sled motor in accordance with the output of the adder. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960018017A 1996-05-27 1996-05-27 Sled control device and method for optical disc recording and reproducing apparatus KR0176920B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960018017A KR0176920B1 (en) 1996-05-27 1996-05-27 Sled control device and method for optical disc recording and reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960018017A KR0176920B1 (en) 1996-05-27 1996-05-27 Sled control device and method for optical disc recording and reproducing apparatus

Publications (2)

Publication Number Publication Date
KR970076579A true KR970076579A (en) 1997-12-12
KR0176920B1 KR0176920B1 (en) 1999-04-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960018017A KR0176920B1 (en) 1996-05-27 1996-05-27 Sled control device and method for optical disc recording and reproducing apparatus

Country Status (1)

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KR (1) KR0176920B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100800701B1 (en) * 2000-11-08 2008-02-01 가부시키가이샤 소니 컴퓨터 엔터테인먼트 Optical disk unit and control method therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100800701B1 (en) * 2000-11-08 2008-02-01 가부시키가이샤 소니 컴퓨터 엔터테인먼트 Optical disk unit and control method therefor

Also Published As

Publication number Publication date
KR0176920B1 (en) 1999-04-15

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