KR970076683A - A linear velocity control device of an optical disc player system - Google Patents
A linear velocity control device of an optical disc player system Download PDFInfo
- Publication number
- KR970076683A KR970076683A KR1019960014683A KR19960014683A KR970076683A KR 970076683 A KR970076683 A KR 970076683A KR 1019960014683 A KR1019960014683 A KR 1019960014683A KR 19960014683 A KR19960014683 A KR 19960014683A KR 970076683 A KR970076683 A KR 970076683A
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- South Korea
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- reproduced
- pwm
- optical disc
- signal
- generating
- Prior art date
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Abstract
본 발명은 광 디스크 플레이어 시스템이 정선속도(Constant Line Velocity : 이하 CLV라 칭함) 제어 방법에 관한 것으로, 특히 광 디스크플레이어의 스핀들 모터의 회전 속도를 디지탈 제어 방식에 의해 정선속도로 제어하는 광 디스크 플레이어 시스템의 정선속도 제어 장치에 관한 것이다. 상기의 제어장치는 광 디스크로부터 재생된 EFM신호로부터 검출된 재생클럭 WCLK를 소정분주하여 재생분주된 재생분주클럭 WCLK-4를 발생하는 클럭추출수단과, 상기 추출된 재생 분주클럭 WCLK-4의 주기를 미리설정된 제어클럭 clkf으로서 카운팅하여 출력하는 카운터와, 상기 카운터로부터 출력되는 출력값을 미리 설정된 최소, 최대값과 비교하여 CLV를 위한 PWM제어신호를 발생하는 제어기와, 상기 제어기로부터 출력도는 PWM제어신호에 대응하는 PWM신호를 발생하는 PWM발생기를 포함하여 구성된다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of controlling a constant velocity (hereinafter referred to as " CLV ") in an optical disc player system, and more particularly to a method and apparatus for controlling the rotation speed of a spindle motor of an optical disc player, To a constant speed control device of a system. The control device includes clock extracting means for generating a reproduced and divided reproduced and frequency-divided clock WCLK-4 by dividing the reproduced clock WCLK detected from the EFM signal reproduced from the optical disc by a predetermined ratio, And a controller for generating a PWM control signal for CLV by comparing an output value output from the counter with a preset minimum and maximum value, and a controller for outputting a PWM control signal And a PWM generator for generating a PWM signal corresponding to the signal.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.
제6도는 본 발명에 따른 광 디스크 프러레이어 시스템의 CLV 제어회로의 블록도를 도시한 도면.FIG. 6 is a block diagram of a CLV control circuit of an optical disc player system according to the present invention; FIG.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960014683A KR100195013B1 (en) | 1996-05-06 | 1996-05-06 | Fixed speed control device of optical disc player system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960014683A KR100195013B1 (en) | 1996-05-06 | 1996-05-06 | Fixed speed control device of optical disc player system |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970076683A true KR970076683A (en) | 1997-12-12 |
KR100195013B1 KR100195013B1 (en) | 1999-06-15 |
Family
ID=66216615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960014683A KR100195013B1 (en) | 1996-05-06 | 1996-05-06 | Fixed speed control device of optical disc player system |
Country Status (1)
Country | Link |
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KR (1) | KR100195013B1 (en) |
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1996
- 1996-05-06 KR KR1019960014683A patent/KR100195013B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
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KR100195013B1 (en) | 1999-06-15 |
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