KR950006736A

KR950006736A - High Speed Track Access Control System of Laser Disc Playback System

Info

Publication number: KR950006736A
Application number: KR1019930016337A
Authority: KR
Inventors: 김명제
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1993-08-23
Filing date: 1993-08-23
Publication date: 1995-03-21

Abstract

본 발명은 레이저디스크재생시스템의 고속트랙억세스제어장치에 관한 것으로, 영상정보가 기록된 레이저디스크(10)를 회전구동하는 스핀들모터(11)와 레이저디스크(11)에 기록된 정보를 광검출하는 픽업장치(12), 독출된 정보를 재생하여 RF신호를 출력하는 신호처리부(13), 이 신호 처리부(13)에서 처리된 신호에서 기준신호(Hsync)를 검출하는 기준신호검출부(14)를 갖춘 레이저디스크재생시스템에 있어서, 상기 스핀들모터(11)의 현재 회전을 주파수검출하는 주파수발생기(15)와, 상기 주파수발생기(15)에서 검출된 주파쉰호와 상기 기준신호검출부(14)에서 검출된 기준신호를 기초로 정상적인 디스크서보출력을 산출하는 서보신호출력부(16), 상기 디스크(10)로부터 독출된 디스크정보를 기초로 각 트랙의 회전속도에 대한 서보신호를 테이블화하여 목표트랙으로의 점프명령시 해당 트랙의 서보신호를 출력하는 마이컴(17), 이 마이컴(17)의 제어하에 상기 정상적인 서보신호와 마이컴(17)으로부터의 서보신호를 스위칭출력하는 스위칭소자(18) 및, 이 스위칭소자(18)를 통해 인가되는 디스크회전속도에 따라 상기 스핀들모터(11)를 회전제어하는 모터구동부(19)를 구비하여 구성되어, 트랙억세스명령시 해당 트랙의 회전속도로 미리 스핀들모터(11)를 구동하여 트랙억세스시간을 단축시키도록 된 것이다.The present invention relates to a high-speed track access control apparatus for a laser disc reproducing system, which optically detects the information recorded on the laser disc (11) and the spindle motor (11) for rotationally driving the laser disc (10) on which image information is recorded. Pick-up device 12, a signal processor 13 for reproducing the read out information and outputting an RF signal, and a reference signal detector 14 for detecting a reference signal (Hsync) from the signal processed by the signal processor 13 In the laser disc reproducing system, a frequency generator (15) for detecting the current rotation of the spindle motor (11), a main frequency signal detected by the frequency generator (15) and a reference detected by the reference signal detector (14). The servo signal output unit 16 calculates the normal disc servo output based on the signal, and the servo signals for the rotational speeds of the tracks are tabulated based on the disc information read from the disc 10. A microcomputer 17 for outputting a servo signal of a corresponding track during a jump command to the track, a switching element 18 for switching and outputting the normal servo signal and a servo signal from the microcomputer 17 under the control of the microcomputer 17, and It comprises a motor drive unit 19 for controlling the rotation of the spindle motor 11 in accordance with the disk rotational speed applied through the switching element 18, the spindle motor 11 in advance at the rotational speed of the track when the track access command ) To shorten the track access time.

Description

High Speed Track Access Control System of Laser Disc Playback System

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

제1도는 본 발명에 다른 레이저디스크재생시스템의 고속트랙억세스제어장치를 나타낸 블럭구성도이다.1 is a block diagram showing a high speed track access control apparatus of a laser disc reproducing system according to the present invention.

Claims

Spindle motor 11 for rotationally driving the laser disk 10 on which the image information is recorded, pickup device 12 for photodetecting the information recorded on the laser disk 11, and information read out from the disk 10. A laser disk reproducing system having a signal processor (13) for reproducing a signal and outputting an RF signal, and a reference signal detector (14) for detecting a reference signal (Hsync) from a signal processed by the signal processor (13). A servo that calculates a normal disc servo output based on a frequency generator 15 for detecting a current rotation of the motor 11 and a frequency signal detected by the frequency generator 15 and a reference signal detected by the reference mutual detection unit. A signal output unit 16, a microcomputer 17 for outputting the rotational speed of the track based on the disk information read out from the disk, and the normal servo signal and the microcomputer 17 from the microcomputer 17 under the control of the microcomputer 17. And a motor driver 19 for rotationally controlling the spindle motor 11 according to the disk rotation speed applied through the switching device 18. A high speed track access control apparatus for a laser disc reproduction system.

2. The high speed track access control apparatus of a laser disc reproducing system according to claim 1, wherein the microcomputer (17) calculates and stores a servo signal for a revolving speed for each track of the disc (10) in advance. .

※ Note: The disclosure is based on the initial application.