KR940004545A

KR940004545A - How to play compact disc

Info

Publication number: KR940004545A
Application number: KR1019920014567A
Authority: KR
Inventors: 마병인
Original assignee: 강진구; 삼성전자 주식회사
Priority date: 1992-08-13
Filing date: 1992-08-13
Publication date: 1994-03-15
Also published as: KR0123772B1

Abstract

본 발명은 컴팩트디스크 재생방법에 관한 것으로, 홈모드에 있어서, 초기 포커싱동작을 제어하는 제1과정: 상기 제1과정 결과 포커싱이 온되면 디스크영역이 데이타영역인지를 판단하는 제2과정; 상기 제2과정 결과 데이타 영역이면 트래킹을 제어하고, TOC독출을 시도하여 TOC독출이 성공하면 정상재생 동작을 수행하는 제3과정, 상기 제3과정에서 TOC독출이 실패하면 디스크영역을 판단하고, 판단결과 데 이타영역이면 계속해서 TOC독출을 시도하고, 데이타영역이 아니면 대물렌즈 및 피드로터를 이동하여 픽업수단이 데이타영역으로 접근하도록 제어하는 제4과정 ; 상기 제2과정 결과 데이타영역이 아니면 픽업수단이 데이타영역으로 접근하도록 대물렌즈 및 피드 모터의 이동을 제어하는 제5과정을 포함하고:롱점프모드에 있어서, 트랙점프 후 데이타탐색이 성공하면 정상재생 동작을 수행하는 제6과정; 데이타탐색이 실패할 경우 데이타영역이면 계속해서 탐색을 시도하고, 아닐 경우 대물렌즈와 피드모터를 이동시켜 픽업수단을 데이타영역으로 접근시킨 제7과정을 포함하는 것을 특징으로 한다.The present invention relates to a compact disc reproducing method, comprising: a first step of controlling an initial focusing operation in a home mode: a second step of determining whether a disc area is a data area when focusing is turned on as a result of the first step; In the second process result data area, tracking is controlled, and when the TOC read is successful, the third process performs normal play operation. When the read process fails in the third process, the disc area is determined. A fourth step of continuously trying to read the TOC in the result data area, and controlling the pickup means to access the data area by moving the objective lens and the feed rotor, if not the data area; And a fifth step of controlling the movement of the objective lens and the feed motor such that the pickup means accesses the data area if the second step is not the result data area. In long jump mode, if the data search is successful after the track jump, normal playback is performed. A sixth process of performing an operation; If the data search fails, the data area is continuously searched, and if not, a seventh process of moving the objective lens and the feed motor to access the pickup means is provided.

본 발명에 따르면, 데이타영역에서의 픽업수단의 위치를 검출하여 픽업수단이 데이타영역을 벗어나지 않도록 제어함으로써 디스크폭주 현상을 방지할 수 있다.According to the present invention, the disk runaway phenomenon can be prevented by detecting the position of the pickup means in the data area and controlling the pickup means not to leave the data area.

Description

How to play compact disc

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

제1도는 컴팩트디스크의 디스크영역을 설명하기 위한 도면.1 is a diagram for explaining a disk area of a compact disc.

제2도는 컴팩트디스크 재생장치를 도시한 블럭도.2 is a block diagram showing a compact disc player.

제3도는 본 발명에 따른 컴팩트디스크 재생방법을 설명하기 위한 흐름도.3 is a flowchart for explaining a method for reproducing a compact disc according to the present invention.

제4도는 본 발명에 른 롱 점프모드(long jump mode)동작을 설명하기 위한 흐름도.4 is a flowchart for explaining a long jump mode operation according to the present invention.

Claims

When the laser diode of the compact disc player is turned on, the signal which becomes "high" when the reflection amount of light from the disc is more than a certain amount is focused. Detection signal, "Low" when the disc area is a data area, and "non" when it is a non-data area. When the signal "high" is called the disk area detection signal, the focusing detection signal is "low", the disk area detection signal is "low", the pickup state S1, the focusing detection signal is "low", and the disk area detection signal. The pickup state of which is " high " is S1, the focusing detection signal is " high ", the disk area detection signal is " low ", and the focusing detection signal is " high " In the home mode for reproducing the disc by moving the pickup means to the innermost circumference, assuming that the in-pickup state is S4, a first process of controlling the initial focusing operation using S1 and S2; A second step of determining whether the pickup state is S3 by using S3 when focusing is turned on as a result of the first step; A third step of controlling tracking if the result of the second process is S3, attempting to read the TOC, and performing a normal reproduction operation if the TOC reading is successful; A fourth step of attempting to read the TOC in the third step, and controlling the pickup means to access the data area by moving the objective lens and the feed motor if it is not S3; And a fifth step of controlling the movement of the objective lens and the feed motor so that the pickup means approaches the data area by using S1, S2, and S3 if the pickup state is not S3. A long jump mode for jumping across the track, the sixth step of performing a normal reproducing operation if the data search is successful after the track jumping; And if the data search fails, if the pickup state is S3, the search is continuously attempted. If not, the compact disc includes the seventh step of moving the objective lens and the feed motor to access the pickup means to the data area. How to play

The method of claim 1, wherein the first step is to turn off focusing if the pickup state is S1 or S2 after starting focusing, and to attempt focusing again by moving the motor several mm around, and again when the focusing result is S1 or S2. Processing as a disk unloading error, otherwise skipping to a second process.

The method according to claim 1, wherein in the fourth, fifth and seventh steps, if the pickup state is not S3, if S4, the amulet lens is moved several tracks to approach the data area, and the pickup means moves the disc area. If it is out of the compact disc playback method characterized in that by using a feed motor to move the pickup means several tens of millimeters to access the data area.

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