KR940022500A

KR940022500A - Laser Disc Player Power Switching Circuit

Info

Publication number: KR940022500A
Application number: KR1019930004830A
Authority: KR
Inventors: 박동성
Original assignee: 이헌조; 주식회사 금성사
Priority date: 1993-03-26
Filing date: 1993-03-26
Publication date: 1994-10-21

Abstract

본 발명은 레이져 디스크 플레이어 전원절환 회로에 관한 것으로, 종래의 레이져 디스크 플레이어는 씨디 플레이때나 엘디플레이때나 동일하게 주전원이 플레이어에 인가되므로 씨디만 플레이 했을시에도 레이져 플레이어 영상부에 전원이 인가되어 전력이 손실되고, 영상부에서의 클럭 노이즈 등의 간섭으로 씨디재생음질이 영향을 끼치는 문제점이 있었다.The present invention relates to a laser disc player power supply switching circuit. In the conventional laser disc player, the main power is applied to the player in the same manner as in the CD play or the EL play. There is a problem in that power is lost and the CD playback sound quality is affected by interference such as clock noise in the video unit.

본 발명은 이와같은 종래 레이져 디스크 플레이어의 문제점을 감안하여 레이져 디스크 플레이어에 설치된 디스크가 씨디(CD)인지 엘디(LD)인지를 판별한 후 씨디일 경우 레이져 디스크 플레이어 영상부에 인가되는 전원을 차단하는 레이져 디스크 플레이어 전원절환 회로를 창안한 것이다.The present invention determines whether a disc installed in a laser disc player is a CD or an LD in consideration of the problems of the conventional laser disc player, and in the case of CD, cuts off the power applied to the laser disc player image unit. It was created the laser disc player power switching circuit.

Description

Laser Disc Player Power Switching Circuit

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

제1도는 본 발명 레이져 디스크 플레이어 전원절환 회로도,1 is a laser disk player power supply switching circuit of the present invention;

제2도는 제1도 씨디/엘디 검출스위치부의 상세회로도,FIG. 2 is a detailed circuit diagram of the CD / LED detection switch of FIG.

제3도는 제1도 마이크로 프로세서의 동작순서도.3 is a flow chart of the microprocessor of FIG.

Claims

When the disc detection signal is inputted to the CD / LED detection switch unit 1 for determining whether the installed disc is a CD or an LD A microprocessor (2) for outputting a control signal and outputting a control signal in a high state, a switch unit (3) for turning on / off in accordance with a control signal input from the microprocessor (2); Power is supplied from the main power supply unit 5, the main power supply unit 5 for supplying power to the entire laser disk player, and the video unit 4 to which power is applied or cut off by the on / off of the switch unit 3. Laser disc player power supply switching circuit, characterized in that consisting of a system unit that operates when the.

According to claim 1, wherein the CD / LED detection switch unit 1 and the outer peripheral switch (SW ₁ ) which is turned off and on when the pickup 8 is in the inner circumference of the disk and turned on and off when in the outer circumference Laser disk player power supply switching circuit, characterized in that consisting of the inner peripheral switch (SW ₂ ).

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