KR970008010A - Motor Control Device and Method in Disc Playback - Google Patents

Motor Control Device and Method in Disc Playback Download PDF

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Publication number
KR970008010A
KR970008010A KR1019950020903A KR19950020903A KR970008010A KR 970008010 A KR970008010 A KR 970008010A KR 1019950020903 A KR1019950020903 A KR 1019950020903A KR 19950020903 A KR19950020903 A KR 19950020903A KR 970008010 A KR970008010 A KR 970008010A
Authority
KR
South Korea
Prior art keywords
disc
clv
radius
mode
cav
Prior art date
Application number
KR1019950020903A
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Korean (ko)
Other versions
KR0162374B1 (en
Inventor
이무영
Original Assignee
구자홍
Lg 전자주식회사
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Application filed by 구자홍, Lg 전자주식회사 filed Critical 구자홍
Priority to KR1019950020903A priority Critical patent/KR0162374B1/en
Publication of KR970008010A publication Critical patent/KR970008010A/en
Application granted granted Critical
Publication of KR0162374B1 publication Critical patent/KR0162374B1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/28—Speed controlling, regulating, or indicating
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Rotational Drive Of Disk (AREA)

Abstract

본 발명은 디스크 재생시 모터 제어장치 및 방법에 관한 것으로, 종래에는 디스크를 회전시키는데 전 구간을 CLV로 하면 랜덤 액세스 타임(random access time)을 줄이기 위해서는 스핀들 모터에 요구되는 토오크가 커진다. 더우기 디스크 재생장치의 성능향상을 위해서는 배속화(2× 또는 4×등)로 가야하는데 이때는 더욱더 상황이 어려워지는 문제점이 있다. 따라서, 본 발명은 배속화에 따라 요구되는 모터의 높은 토오크, 넓은 PLL의 록(lock)범위 등을 크게 감소시킬 수 있고, 엑세스 타임이 모터의 가감속에 필요한 시간을 줄일 수 있으며, 디스크 제품 전 범위에 걸쳐 사용 가능하도록 한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor control apparatus and method for reproducing a disc. Conventionally, when the entire section is set to CLV to rotate a disc, the torque required for the spindle motor is increased in order to reduce random access time. Moreover, in order to improve the performance of the disc reproducing apparatus, it is necessary to go to double speed (2 × or 4 ×, etc.). Therefore, the present invention can greatly reduce the high torque of the motor required by the double speed, the lock range of the wide PLL, etc., the access time can reduce the time required for the acceleration and deceleration of the motor, the entire range of disc products To be available across.

Description

디스크 재생시 모터 제어장치 및 방법Motor Control Device and Method in Disc Playback

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

제3도는 본 발명 디스크 재생시 모터제어장치 구성도, 제4도는 CLV모드시 디스크 변경에 따른 회전수를 보여주는 그래프, 제5도는 제4도에서 디스크 반경에 따른 데이타 기록영역을 보여주는 설명도.3 is a block diagram of a motor control apparatus for reproducing a disc of the present invention, FIG. 4 is a graph showing the number of revolutions according to a disc change in the CLV mode, and FIG. 5 is an explanatory diagram showing a data recording area according to a disc radius in FIG.

Claims (3)

디스크 회전시 포커스와 트랙킹 서보동작을 수행하여 얻은 고주파신호(RF)를 가지고 0과 1의 2치화신호로 변환하여 출력하는 고주파 파형정형수단과, 상기 고주파신호에 비례하는 비트 클럭을 발생하는 비트-클럭 발생수단과, 상기 비트-클럭 발생수단의 비트 클럭에 맞추어 고주파 파형정형수단으로 부터 발생하는 2치화된 신호를 저장수단에 저장하고 그 저장된 데이타에 대해 디코딩하여 출력하는 디코딩 수단과, 상기 비트-클럭 발생수단의 비트-클럭을 이용하여 동기신호를 검출하고 이 동기신호를 이용하여 위상에러 및 주파수에러를 검출하여 디스크를 회전 선속도로 구동하기 위한 신호를 발생하는 CLV구동수단돠, 상기 CLV구동수단의 동기신호에 의해 디스크의 회전 선속도를 검출하는 선속도 검출수단과, 상기 선속도 검출수단으로 부터 검출된 선속도와 현재위치의 어드레스를 계산하여 현재 위치정보를 얻고 그 정보에 따라 CLV 또는 CAV로 제어할 것인지를 선택하는 스핀들 서보모드 제어수단과, 상기 스핀들 서보모드 제어수단의 제어를 받아 디스크를 일정한 각속도를 회전시키기 위한 CAV구동수단(16)과, 상기 스핀들 서보모드 제어수단의 출력에 따라 스위치절환하여 상기 CLV구동수단 또는 CAV구동수단의 출력을 스핀들 모터에 전달하여 디스크를 회전시키기 위한 절환스위치로 구성된 것을 특징으로 하는 디스크 재생시 모터 제어장치.High frequency waveform shaping means for converting and outputting a binary signal of 0 and 1 with high frequency signal RF obtained by performing focus and tracking servo operation during disc rotation, and a bit clock generating a bit clock proportional to the high frequency signal. Decoding means for storing a binarized signal generated from a high frequency waveform shaping means in accordance with a bit clock of the bit-clock generating means in a storage means, decoding the stored data, and outputting the stored data; CLV driving means for generating a signal for driving a disk at a rotational linear velocity by detecting a synchronization signal using a bit clock of the clock generating means and detecting a phase error and a frequency error using the synchronization signal. Linear speed detecting means for detecting a rotational linear speed of the disc by means of a synchronizing signal of the means, and detected by the linear speed detecting means Spindle servo mode control means for calculating the linear velocity and the address of the current position to obtain the current position information and selecting whether to control by CLV or CAV according to the information, and the disk under constant angular velocity under the control of the spindle servo mode control means. And a switching switch for rotating the disk by transferring the output of the CLV driving means or the CAV driving means to the spindle motor by switching the switch according to the output of the spindle servo mode control means. Motor control device during disc playback, characterized in that. 제1항에 있어서, 스핀들 서보모드 제어수단은 CLV모드시 최내주보다는 긴 반경(r1)과 최외주보다는 짧은 반경(r2)을 설정한 후 현재의 위치정보(r)가 상기 반경(r1) 보다 작거나 반경(r2)보다 큰 경우에는 CAV로 제어하고, 반경(r1) 보다 크고 반경(r2) 보다 작으면 CLV로 스핀들 모터를 제어하는 것을 특징으로 하는 디스크 재생시 모터 제어장치.The method of claim 1, wherein the spindle servo mode control means sets the radius r 1 longer than the innermost and the radius r 2 shorter than the outermost in the CLV mode, and then the current position information r becomes the radius r. 1) less than or radius (r 2) is greater than when controlled by the CAV, and the radius (r 1) than the large radius (disk playing, characterized in that is less than r 2) for controlling the spindle motor by CLV motor control Device. 디스크 회전시 디스크의 선속도와 어드레스를 계산하여 현재의 위치정보를 얻는 제1단계와, 상기 제1단계에서 얻은 위치정보에 의해 CAV모드로 제어할 것인지 CLV모드로 제어할 것인지를 선택하는 제2단계와, 상기 제2단계에서 CAV모드로 제어할 경우 디스크를 일정한 각속도로 회전시키고 CLV모드시는 디스크를 일정한 선속도로 회전시키도록 하는 제3단계로 이루어진 것을 특징으로 하는 디스크 재생시 모터 제어방법.A first step of obtaining the current position information by calculating the linear velocity and address of the disc when the disc is rotated and a second of selecting whether to control in the CAV mode or the CLV mode based on the position information obtained in the first step And a third step of rotating the disc at a constant angular speed when controlling the CAV mode in the second step, and rotating the disc at a constant linear speed in the CLV mode. . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950020903A 1995-07-15 1995-07-15 Motor control method and device for disk reproduction KR0162374B1 (en)

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Application Number Priority Date Filing Date Title
KR1019950020903A KR0162374B1 (en) 1995-07-15 1995-07-15 Motor control method and device for disk reproduction

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Application Number Priority Date Filing Date Title
KR1019950020903A KR0162374B1 (en) 1995-07-15 1995-07-15 Motor control method and device for disk reproduction

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KR970008010A true KR970008010A (en) 1997-02-24
KR0162374B1 KR0162374B1 (en) 1998-12-15

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100272096B1 (en) * 1997-07-16 2000-11-15 윤종용 Apparatus for preventing the heat generated in a focus drive, as being seek optical dlsc reproducing apparatus
KR100300786B1 (en) * 1996-05-13 2001-09-03 니시무로 타이죠 Apparatus for reproducing a disk
KR100312369B1 (en) * 1998-02-10 2001-11-03 다니구찌 이찌로오, 기타오카 다카시 Disk rotation control device
KR100498432B1 (en) * 1998-06-30 2005-09-02 삼성전자주식회사 Defect Detection Circuit and Method of Optical Disc Playback System
KR100560572B1 (en) * 1997-05-28 2006-05-25 소니 가부시끼 가이샤 Disc recording and/or reproducing apparatus and its motor drive control circuit
KR100662909B1 (en) * 2005-02-23 2007-01-02 삼성전자주식회사 Method for reading TOC information of an optical disk and optical disk apparatus thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100464387B1 (en) * 1997-06-26 2005-04-06 삼성전자주식회사 Speed controller of digital spindle motor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100300786B1 (en) * 1996-05-13 2001-09-03 니시무로 타이죠 Apparatus for reproducing a disk
KR100560572B1 (en) * 1997-05-28 2006-05-25 소니 가부시끼 가이샤 Disc recording and/or reproducing apparatus and its motor drive control circuit
KR100272096B1 (en) * 1997-07-16 2000-11-15 윤종용 Apparatus for preventing the heat generated in a focus drive, as being seek optical dlsc reproducing apparatus
KR100312369B1 (en) * 1998-02-10 2001-11-03 다니구찌 이찌로오, 기타오카 다카시 Disk rotation control device
KR100498432B1 (en) * 1998-06-30 2005-09-02 삼성전자주식회사 Defect Detection Circuit and Method of Optical Disc Playback System
KR100662909B1 (en) * 2005-02-23 2007-01-02 삼성전자주식회사 Method for reading TOC information of an optical disk and optical disk apparatus thereof

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KR0162374B1 (en) 1998-12-15

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