KR960030127A - Track Jump Control Circuit and Method of Optical Disc Player - Google Patents

Track Jump Control Circuit and Method of Optical Disc Player Download PDF

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Publication number
KR960030127A
KR960030127A KR1019950000797A KR19950000797A KR960030127A KR 960030127 A KR960030127 A KR 960030127A KR 1019950000797 A KR1019950000797 A KR 1019950000797A KR 19950000797 A KR19950000797 A KR 19950000797A KR 960030127 A KR960030127 A KR 960030127A
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KR
South Korea
Prior art keywords
track
disc
fixed speed
signal
rotation
Prior art date
Application number
KR1019950000797A
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Korean (ko)
Other versions
KR0131416B1 (en
Inventor
김종운
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.)
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Publication date
Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019950000797A priority Critical patent/KR0131416B1/en
Publication of KR960030127A publication Critical patent/KR960030127A/en
Application granted granted Critical
Publication of KR0131416B1 publication Critical patent/KR0131416B1/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
    • G11B7/08535—Methods and circuits to control the velocity of the head as it traverses the tracks to maintain constant velocity during the traverse
    • 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

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION

광 디스크 재생장치에서 목표트랙으로 광픽업을 트랙점프시키는 회로 및 방법에 관한 것이다.A circuit and method for track jumping an optical pickup to a target track in an optical disc reproducing apparatus.

2. 발명이 해결하고자 하는 기술적 과제2. Technical problem to be solved by the invention

디스크의 정선속도가 디스크마다 차이를 가지는데도 불구하고 모두 동일한 정선속도를 갖는 것으로 간주하고 이동할 트랙수를 산출하여 트랙점프를 함으로써 트랙 서치시간이 지연되게 되는 것을 개선한다.Even though the selection speeds of the discs differ from disc to disc, all of them are regarded as having the same selection speed, and the track search time is delayed by performing track jump by calculating the number of tracks to be moved.

3. 발명의 해결방법의 요지3. Summary of Solution to Invention

현재 사용하는 디스크의 1회전주기를 측정하고, 측정된 1회전주기로부터 정선속도를 검출하며 검출된 정선속도에 따라 이동할 트랙수를 결정하여 트랙점프를 한다.Measures one rotation period of the disc currently used, detects the fixed speed from the measured one rotation period, and determines the number of tracks to move according to the detected fixed speed to perform track jump.

4. 발명의 중요한 용도4. Important uses of the invention

CDP, LDP, MDP 등과 같은 광 디스크 재생장치.Optical disc player such as CDP, LDP, MDP, etc.

Description

광디스크 재생장치의 트랙점프 제어회로 및 방법Track Jump Control Circuit and Method of Optical Disc Player

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

제1도는 본 발명에 따른 광 디스크 재생장치의 블럭구성도.1 is a block diagram of an optical disc reproducing apparatus according to the present invention.

Claims (5)

서로 다른 정선속도를 가지는 디스크를 사용하는 광 디스크 재생장치의 트랙점프 제어회로에 있어서, 상기디스크를 회전시키기 위한 스핀들 모터(102)와, 상기 디스크에 기록된 정보를 픽업하는 광픽업(104)과, 상기 스핀들 모터(102)와 광픽업(104)을 구동시키며 상기 스핀들 모터(102)의 회전에 따른 FG펄스를 출력하는 모터구동부(106)와, 상기 픽업된 신호를 증폭하는 RF증폭기(108)와, 상기 증폭된 신호를 EFM복조하는 EFM디코더(110)와, 상기 복조된 신호로부터 오디오신호를 재생해 내는 신호처리부(112)와, 상기 RF증폭기(108) 및 EFM디코더(110)의 출력과 소정 제어에 의해 상기 모터구동부(106)를 제어하여 상기 디스크에 대한 서보를 행하는 서보신호 처리부(114)와, 상기 FG펄스로부터 상기 디스크(100)의 1회전tl마다 하나의 펄스가 나타나는 회전주기신호를 발생하는 회전주기신호 발생기(118)와, 상기 디스크(100)에기록되어 있는 정보를 재생하기 위하여 상기 서보신호처리부(114)와 EFM디코더(110) 및 신호처리부(112)의 재생동작을 전반적으로 제어하며, 상기 회전주기신호에 근거하여 상기 디스크(100)의 실제적인 정선속도를 결정하고 결정된 정선속도에따라 트랙점프를 제어하는 마이컴(116)으로 구성하는 것을 특징으로 하는 트랙점프 제어회로.A track jump control circuit of an optical disc reproducing apparatus using discs having different fixed speeds, comprising: a spindle motor (102) for rotating the disc, an optical pickup (104) for picking up information recorded on the disc; A motor driver 106 for driving the spindle motor 102 and the optical pickup 104 and outputting an FG pulse according to the rotation of the spindle motor 102, and an RF amplifier 108 for amplifying the picked-up signal. And an EFM decoder 110 for EFM demodulating the amplified signal, a signal processor 112 for reproducing an audio signal from the demodulated signal, and outputs of the RF amplifier 108 and the EFM decoder 110. A servo signal processing unit 114 which controls the motor driving unit 106 by a predetermined control to perform servo on the disk, and a rotation cycle signal in which one pulse appears every one rotation tl of the disk 100 from the FG pulse. Which causes Reproducing the rotation signal generator 118 and the reproducing operation of the servo signal processor 114, the EFM decoder 110 and the signal processor 112 in order to reproduce the information recorded on the disk 100. And a microcomputer (116) which determines the actual fixed speed of the disc (100) based on the rotation period signal and controls the track jump according to the determined fixed speed. 서로 다른 정선속도를 가지는 디스크를 사용하는 광 디스크 재생장치의 트랙점프 제어방법에 있어서, 상기디스크의 1회전주기를 측정하는 과정과, 상기 측정된 1회전주기로부터 상기 디스크의 정선속도를 검출하는 과정과, 상기검출된 정선속도에 대응하여 현재 위치의 트랙으로부터 목표트랙까지 이동할 트랙수를 결정하는 과정과, 상기 결정된 트랙수 만큼 트랙점프하는 과정으로 이루어지는 것을 특징으로 하는 트랙점프 제어방법.In the track jump control method of an optical disc reproducing apparatus using discs having different fixed speeds, the step of measuring one rotation period of the disc and the step of detecting the fixed speed of the disc from the measured one rotation period And determining a number of tracks to move from a track at a current position to a target track in response to the detected fixed speed, and track jumping as much as the determined number of tracks. 제2항에 있어서, 상기 1회전주기 측정과정이 상기 광 디스크 재생장치의 스핀들 모터의 회전에 따라 발생되는 FG펄스를 이용하여 측정하는 것을 특징으로 하는 트랙점 프 제어방법.The track jump control method according to claim 2, wherein the first rotation period measurement process is performed using an FG pulse generated according to the rotation of the spindle motor of the optical disk reproducing apparatus. 제2항 또는 제3항에 있어서, 상기 정선속도 검출과정이 상기 디스크의 1회전주기 동안의 시간을 카운트하는 것에 의해 상기 정선속도를 검출하는 것을 특징으로 하는 트랙점프 제어방법.4. The track jump control method according to claim 2 or 3, wherein the fixed speed detecting process detects the fixed speed by counting a time during one rotation period of the disc. 제4항에 있어서, 상기 결정과정이 상기 디스크마다 차이를 가지는 정선속도마다에 따라 미리 설정된 트랙길이값들로 이루어지는 트랙 테이블로부터 상기 검출된 정선속도에 대응하는 트랙 길이값을 리드하고 그에 따라 상기 이동할 트랙수를 결정하는 것을 특징으로 하는 트랙점프 제어방법.5. The method according to claim 4, wherein the determination process reads a track length value corresponding to the detected fixed speed from a track table consisting of track length values preset according to each fixed speed having a difference for each disc, and moves the track accordingly. A track jump control method, characterized by determining the number of tracks. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950000797A 1995-01-19 1995-01-19 Track jump control circuit and method of optical disk reproducing apparatus KR0131416B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950000797A KR0131416B1 (en) 1995-01-19 1995-01-19 Track jump control circuit and method of optical disk reproducing apparatus

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Application Number Priority Date Filing Date Title
KR1019950000797A KR0131416B1 (en) 1995-01-19 1995-01-19 Track jump control circuit and method of optical disk reproducing apparatus

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KR960030127A true KR960030127A (en) 1996-08-17
KR0131416B1 KR0131416B1 (en) 1998-04-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100446278B1 (en) * 1996-11-30 2004-10-14 삼성전자주식회사 A signal processing method
KR100513354B1 (en) * 1998-05-09 2005-10-28 엘지전자 주식회사 Data recording speed detection device and method for optical disc

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100614343B1 (en) * 2004-08-17 2006-08-21 엘지전자 주식회사 Method for still-jumping in optical disc driver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100446278B1 (en) * 1996-11-30 2004-10-14 삼성전자주식회사 A signal processing method
KR100513354B1 (en) * 1998-05-09 2005-10-28 엘지전자 주식회사 Data recording speed detection device and method for optical disc

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