KR960028532A

KR960028532A - Video phone power control device

Info

Publication number: KR960028532A
Application number: KR1019940036001A
Authority: KR
Inventors: 송영용
Original assignee: 권태웅; 엘지하니웰 주식회사
Priority date: 1994-12-22
Filing date: 1994-12-22
Publication date: 1996-07-22

Abstract

본 발명은 폐쇄회로 시스템의 일종인 비디오 폰에 물체가 감지되었을 때 전원이 공급되고 물체가 사라지면 전원이 차단되도록 한 비디오 폰의 전원 제어장치에 관한 것으로, 특히 비디오 폰(5) 앞에 물체가 있는지를 검출하는 광센서(1)와 ; 상기 광센서(1)에서 소정의 물체를 감지하면 그 검지시간을 카운트하여 소정의 제어신호를 출력하는 타이머(2)와 ; 상기 타이머(2)의 출력신호에 의해 선택적으로 온, 오프되어 아답터(4) 및 모니터(6)에 인가되는 교류전압의 공급을 제어하는 릴레이(3)를 부가하여서 된 것을 특징으로 한다.The present invention relates to a power supply control device of a video phone that is powered when the object is detected in the video phone, which is a kind of a closed circuit system, and cuts off when the object disappears. An optical sensor 1 for detecting; A timer (2) for detecting a predetermined object by the optical sensor (1) and counting a detection time to output a predetermined control signal; It is characterized by adding a relay (3) which is selectively turned on and off by the output signal of the timer (2) and controls the supply of AC voltage applied to the adapter (4) and the monitor (6).

Description

Video phone power control device

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

제2도는 본 발명 비디오 폰의 전원제어장치 회로도, 제3도의 (가)는 아답터의 출력전압 파형도, (나)는 비디오 폰에서 출력되는 영상신호 파형도2 is a circuit diagram of a power supply control device of a video phone according to the present invention, (a) is an output voltage waveform diagram of an adapter, and (b) is an image signal waveform diagram output from a video phone.

Claims

An adapter 4 for converting an AC voltage into a DC voltage; A video phone 5 which is driven by the output voltage of the adapter 4 and can carry out conversations with the visitor and output an image pickup signal for a predetermined object; CLAIMS 1. A closed circuit having a monitor (6) for displaying an image output from the video phone (5) on a screen, comprising: an optical sensor (1) for detecting whether an object is present in front of the video phone (5); A timer (2) for detecting a predetermined object by the optical sensor (1) and counting a detection time to output a predetermined control signal; And a relay (3) which is selectively turned on and off by the output signal of the timer (2) to control the supply of AC voltage applied to the adapter (4) and the monitor (6). Power control unit.