KR970071658A

KR970071658A - Composite optical disc player and its reproduction method

Info

Publication number: KR970071658A
Application number: KR1019960013714A
Authority: KR
Inventors: 김관준
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1996-04-30
Filing date: 1996-04-30
Publication date: 1997-11-07

Abstract

본 발명은 복합 광디스크 플레이어 및 그의 재생 방법에 관한 것으로, 디스크 구동부(10), DVD용 대물렌즈 및 CD용 대물렌즈를 갖는 광 픽업부(12), 서보 제어부(14), 증폭부(16), 광량 검출부(18), 마이컴(20), 제1 및 제2신호 처리부(24,26), 오디오 디코더(28), MPEG-2 디코더(30), 오디오 디지탈-아날로그 컨버터(digital-analog converter(DAC):32), 비디오 DAC(34), 스피커(36) 및 화면(38)을 포함하고 구성되어, 디스크 트레이에 장착된 디스크의 종류를 판별하고 이에따라 대물렌즈 및 재생모드를 변환하여 재생을 실행하기 때문에 DVD 및 CD를 원활히 재생할 수 있는 장점이 있다.The present invention relates to a composite optical disk player and a reproducing method thereof and includes an optical pickup unit 12 having a disk drive unit 10, a DVD objective lens and a CD objective lens, a servo control unit 14, an amplification unit 16, A light amount detector 18, a microcomputer 20, first and second signal processors 24 and 26, an audio decoder 28, an MPEG-2 decoder 30, a digital-analog converter (DAC ) 32, a video DAC 34, a speaker 36, and a screen 38, and is configured to discriminate the type of a disc loaded in the disc tray, convert the objective lens and the reproduction mode, Therefore, DVD and CD can be played smoothly.

Description

Composite optical disc player and its reproduction method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명의 바람직한 일 실시예에 따른 복합 광디스크 플레이어의 블럭도, 제2도는 본 발명의 바람직한 다른 실시예에 따른 복합 광디스크 플레이어의 재생 방법을 실행하기 위한 흐름도.FIG. 1 is a block diagram of a composite optical disc player according to a preferred embodiment of the present invention; FIG. 2 is a flowchart for executing a reproducing method of a composite optical disc player according to another preferred embodiment of the present invention;

Claims

A composite optical disc player for discriminating the types of a compact disc (CD) and a digital video disc (DVD) mounted on a disc tray and reproducing the same, the disc driving unit 10 for driving the disc D; A servo control unit (14) for controlling focus, tracking and driving speed of the disk (D); An optical pickup unit 12 for picking up light on the disc D and outputting an electrical signal corresponding thereto; A light amount detecting unit 918 detecting the amount of light picked up by the optical pickup unit 12; A microcomputer 20 for discriminating the type of the disc D according to an amount of light detected by the light amount detecting unit 18 and generating a control signal according to the type of the disc D; An amplifying unit 16 amplifying a picked up weak signal provided from the optical pickup unit 12 to a predetermined magnitude and outputting the amplified signal; A first signal processing unit 24 for digitally processing an audio signal provided from the amplifier unit 16 according to a control signal provided from the microcomputer 20; A second signal processing unit 26 for digitally processing a video signal provided from the amplifying unit 16 according to a control signal provided from the microcomputer 20; An audio decoder 28 for decoding the output signal of the first signal processor 924; An audio DAC (digital-analog converter) 32 for converting an output signal of the audio decoder 28 into an analog signal and a speaker 36 for outputting an output signal of the audio DA 32 as a voice signal; An MPEG-2 decoder 30 for decoding an output signal of the second signal processor 26; A video DAC 34 for converting an output signal of the MPEG-2 decoder 30 into an analog signal; And a screen (38) for displaying an output signal of the video DAC (34).

The composite optical disc player according to claim 1, wherein the optical pickup unit (12) has an objective lens for DVD and an objective lens for CD.

3. The optical pickup according to claim 2, wherein the microcomputer (20) generates a control signal for selecting the objective lens for DVD or the objective lens for CD according to an output signal of the light amount detector (18) Wherein the composite optical disk player comprises:

A reproducing method of a composite optical disc player for discriminating the types of a compact disc (CD) and a digital video disc (DVD) mounted on a disc tray and reproducing the same, characterized in that it is determined whether or not a disc D is mounted on the disc tray Step S10; If the disc D is loaded on the disc tray in step S10, it is determined whether the disc is a DVD (S20); In step S20, if the disc D is a DVD hard or a pickup lens and the mode is changed to a CD mode, a TOC (table of contents) area is read and then playback is performed. If the disc is a DVD, (S30, S40, S50) of reproducing the composite optical disc player.

5. The method of claim 4, further comprising the step (S60, S70) of displaying that the disc is not mounted if the disc is not mounted in step (S10), returning to step S10 after switching to the standby state A method of reproducing a composite optical disc player.

※ Note: It is disclosed by the contents of the first application.