KR960003309A - External input automatic switching circuit - Google Patents

External input automatic switching circuit Download PDF

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Publication number
KR960003309A
KR960003309A KR1019940012945A KR19940012945A KR960003309A KR 960003309 A KR960003309 A KR 960003309A KR 1019940012945 A KR1019940012945 A KR 1019940012945A KR 19940012945 A KR19940012945 A KR 19940012945A KR 960003309 A KR960003309 A KR 960003309A
Authority
KR
South Korea
Prior art keywords
mode
external input
video
tape cassette
video tape
Prior art date
Application number
KR1019940012945A
Other languages
Korean (ko)
Inventor
홍영표
김순두
Original Assignee
김광호
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019940012945A priority Critical patent/KR960003309A/en
Publication of KR960003309A publication Critical patent/KR960003309A/en

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  • Television Signal Processing For Recording (AREA)
  • Studio Circuits (AREA)

Abstract

소정의 외부 입력단자에서 동기신호가 검출되면 검출된 외부 입력모드로 자동 절환해 주는 외부 입력 자동 절환회로가 개시되는 바, 이는 복수의 외부 입력단자에서 각각 구비되어 비데오 테이프 카세트가 VTR 데크에 삽입되거나 비데오 테이프 카세트가 삽입된 상태에서 재생키가 입력되는 재생모드에서 상기 외부입력단자를 통해 입력되는 동기신호를 검출하는 복수의 동기신호 검출부와, 상기 동기신호 검출부에서 동기신호가 검출되면 텔레비젼의 파워를 첵크하여 스탠바이상태이면 텔레비젼의 파워를 온한 후 동기신호가 검출된 외부 입력단자의 비데오 모드를 수신하기 위해서 현재의 모드를 비데오 모드로 자동 절환하고, 동기신호가 소정 시간동안 입력되지 않을 경우 TV 모드 또는 TV파워 오프모드로 절환하는 제어부로 구성됨으로써, VTR테크에 비데오 테이프 카세트가 삽입되거나 비데오 테이프 카세트가 삽입된 상태에서 비데오 재생키가 입력되면 모든 절환키나 텔레비젼 파원 온 키와 같은 별도의 조작없이 바로 비데오를 시청할 수 있게 되어 유저에게 편리함을 준다.An external input automatic switching circuit for automatically switching to a detected external input mode when a synchronous signal is detected at a predetermined external input terminal is provided, and each of the plurality of external input terminals is provided so that a video tape cassette is inserted into the VTR deck. A plurality of sync signal detectors for detecting a sync signal input through the external input terminal in a play mode in which a play key is input while a video tape cassette is inserted; If the camera is in standby and standby mode, the current mode is automatically switched to the video mode to receive the video mode of the external input terminal where the synchronization signal is detected after the TV is turned on. VTR TECH by the control unit to switch to TV power off mode When the video tape cassette is inserted or a video tape cassette video reproduction key is input, in the inserted state is able to watch the video immediately without further operations such as switching every key-on key pawon TV gives a convenience to the user.

Description

외부 입력 자동 절환회로External input automatic switching circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 이 발명에 따른 외부 입력 자동 절환회로의 블럭도.1 is a block diagram of an external input automatic switching circuit according to the present invention.

제2도는 이 발명에 따른 외부 입력 자동 절환회로를 수행하기 위한 흐름도이다.2 is a flowchart for performing an external input automatic switching circuit according to the present invention.

Claims (2)

복수의 외부 입력단자에서 각각 구비되어 비데오 테이프 카세트가 비디오 테이프 레코더 데크에 삽입되거나 비데오 테이프 카세트가 삽입된 상태에서 재생키가 입력되는 재생모드에서 상기 외부입력단자를 통해 입력되는 동기신호를 검출하는 복수의 동기신호 검출수단과, 상기 동기신호 검출수단에서 동기신호가 검출되면 텔레비젼의 파워를 첵크하여 스탠바이 상태이면 텔레비젼의 파워를 온한 후 동기신호가 검출된 외부 입력단자의 비데오 모드를 수신하기 위해서 현재의 모드를 비데오모드로 자동 절환하고, 동기신호가 소정 시간동안 입력되지 않을 경우 TV 모드 또는 TV파워 오프모드로 절환하는 제어부로 구성되는 외부 입력 자동 절환회로.A plurality of external input terminals, respectively, for detecting a synchronization signal input through the external input terminal in a playback mode in which a video tape cassette is inserted into a video tape recorder deck or a playback key is input while a video tape cassette is inserted; The synchronous signal detecting means and the synchronous signal detecting means detect the synchronous signal and check the power of the television. An external input automatic switching circuit comprising a control unit for automatically switching the mode to the video mode and switching to the TV mode or the TV power off mode when a synchronous signal is not input for a predetermined time. 제1항에 있어서, 상기 제어수단은, 다수의 외부 입력단자에서 다수의 비데오 잭이 각각 연결되어 있는 경우 상기 다수의 외부 입력단자를 순차적으로 첵크하고 동기신호가 검출되는 외부 입력모드로 현재의 모드를 절환함을 특징으로 하는 외부 입력 자동 절환회로.The current mode of claim 1, wherein the control means checks the plurality of external input terminals sequentially and connects the plurality of video jacks to each other in order to detect a synchronization signal. External input automatic switching circuit characterized in that for switching. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940012945A 1994-06-09 1994-06-09 External input automatic switching circuit KR960003309A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940012945A KR960003309A (en) 1994-06-09 1994-06-09 External input automatic switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940012945A KR960003309A (en) 1994-06-09 1994-06-09 External input automatic switching circuit

Publications (1)

Publication Number Publication Date
KR960003309A true KR960003309A (en) 1996-01-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940012945A KR960003309A (en) 1994-06-09 1994-06-09 External input automatic switching circuit

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KR (1) KR960003309A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100348267B1 (en) * 1999-12-30 2002-08-09 엘지전자주식회사 method for automatic changing mode in TV

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100348267B1 (en) * 1999-12-30 2002-08-09 엘지전자주식회사 method for automatic changing mode in TV

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