KR970057608A

KR970057608A - TV power supply control circuit

Info

Publication number: KR970057608A
Application number: KR1019950056338A
Authority: KR
Inventors: 박주덕
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1995-12-26
Filing date: 1995-12-26
Publication date: 1997-07-31

Abstract

본 발명은 텔레비전의 전원제어회로에 관한 것으로, 텔레비젼의 전원ON을 예약하기 위한 예약버튼(26a)과 전원ON제어를 위한 전원버튼(26b)을 갖춘 리모콘장치(26)와, 스탠바이전원(ST)에 의해 대기동작하면서 상기 전원ON 예약상태에서 전원 ON 제어신호를 출력하여 방송신호의 정상적인 재생처리를 제어하는 마이컴(24), 상기 스탠바이전원(ST)에 의해 작동되어 영상동기신호를 검출하는 동기신호검출부(44), 상기 마이컴(24)의 전원ON 제어신호와 상기 동기신호검출부(44)의 동기검출신호를 논리 AND처리하여 전원경로 스위칭소자(32)에 의한 전원ON상태를 스위칭설정하는 논리 AND처리하여 전원경로 스위칭소자(32)에 의한 전원ON상태를 스위칭설정하는 논리AND게이트(46)를 갖추어 구성되고, 상기 마이컴(24)은 영상동기 신호의검출시 음성경로스위치(48)를 스위칭접속제어하여 음성신호가 재생되도록 함과 더불어 타이머(24b)에 의해 소정시간의 경과이전에 상기 전원버튼(26b)에 의한 전원 ON제어신호가 투입되어야만 상기 마이컴(24)이 상기 영상경로스위치(38)를 접속시켜 영상신호도 재생되도록 하는 것이다.The present invention relates to a power supply control circuit of a television, comprising: a remote control device (26) having a reservation button (26a) for reserving power ON of a television and a power button (26b) for power on control, and a standby power source (ST). By the microcomputer 24 for controlling the normal reproduction processing of the broadcast signal by outputting a power-on control signal in the power-on reservation state and standby operation by the standby power source ST and a synchronization signal for detecting a video synchronization signal. Logic AND processing of the detection section 44 and the power ON control signal of the microcomputer 24 and the synchronization detection signal of the synchronization signal detection section 44 to switch the power ON state by the power path switching device 32 And a logic AND gate 46 for setting and switching the power ON state by the power path switching element 32. The microcomputer 24 switches the audio path switch 48 at the time of detecting the image synchronization signal. The microcomputer 24 controls the image path switch 38 only when the power-on control signal by the power button 26b is inputted before the predetermined time elapses by the timer 24b. The video signal is also played back.

Description

TV power supply control circuit

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

제1도는 본 발명이 적용되는 텔레비전의 전원제어계통을 나타낸 도면1 is a diagram showing a power supply control system of a television to which the present invention is applied.

Claims

In the power supply control system of a television comprising a switching element 32 for power on / off interposed on an AC power line during power ON control while regenerating the standby power ST to maintain the power ON standby state. In the power ON reservation state, standby operation is performed by the remote control device 26 having the reservation button 26a for reserving power ON of the television and the power button 26b for power ON control and the standby power source ST. A microcomputer 24 for outputting a power ON control signal to control the normal reproduction processing of the broadcast signal, the synchronization signal detecting means 44 that is operated by the standby power source ST to detect a video synchronization signal, and the microcomputer 24 And a logic AND gate 46 for setting and switching the power ON state by the switching element 31 by performing a logic AND process on the power ON control signal and the synchronous detection signal of the synchronous signal detection means 44. Microcomputer 24 controls the power ON state for a predetermined time for controlling the timing of the reproduction process of the video / audio signal timer (24a) is equipped with the power of the television, characterized in the control circuit configured for.

2. The apparatus according to claim 1, further comprising an audio path switch (48) for setting a processing path of an audio signal under the control of the microcomputer (924) when the video synchronization signal is detected, and the microcomputer (24) is provided with a video synchronization signal. A power supply control circuit for a television, characterized in that the audio signal switch is controlled by switching the audio path switch (48) upon detection.

A video path switch (38) for switching a playback path of a video signal in a playback output state of said audio signal, further comprising a video path switch (38), wherein said timer (24b) is used for a predetermined time. The power supply control circuit for a television, characterized in that the microcomputer (24) connects the video path switch (38) only when the power ON control signal by the power button (26b) is input.

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