KR950020688A - Power supply control device of composite video recorder - Google Patents

Power supply control device of composite video recorder Download PDF

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Publication number
KR950020688A
KR950020688A KR1019930030107A KR930030107A KR950020688A KR 950020688 A KR950020688 A KR 950020688A KR 1019930030107 A KR1019930030107 A KR 1019930030107A KR 930030107 A KR930030107 A KR 930030107A KR 950020688 A KR950020688 A KR 950020688A
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KR
South Korea
Prior art keywords
signal
right channel
input
recording
unit
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KR1019930030107A
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Korean (ko)
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KR960014387B1 (en
Inventor
김제태
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이헌조
주식회사 엘지전자
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Priority to KR1019930030107A priority Critical patent/KR960014387B1/en
Publication of KR950020688A publication Critical patent/KR950020688A/en
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Publication of KR960014387B1 publication Critical patent/KR960014387B1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing

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  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

본 발명은 기록모드시 스테레오인 우채널신호가 외부로부터 입력되는가를 감지하는 우채널 신호입력 감지부와, 재생모드시 기록매체에서 픽업된 신호중에 우채 널의 캐리어 주파수가 있는가를 우채널 캐리어 주파수 감지부와, 상기 우채널 신호입력 감지부와 우채널 캐리어 주파수 감지부에서 출력된 데이터를 받아 오디오 신호가 모노인가 스테레오인가를 판단하여 이에 해당된 제어신호를 입출력신호를 선택하는 매트릭스부에 공급하는 제어신호 발생부와, 상기 제어신호 발생부에서 출력되는 제어신호의 레벨에 따라 작동하여 스테레오 기록재생회로에 공급되는 전원을 스위칭하는 전원 스위칭부로 구성되어 복합영상기록 재생기에서 외부오디오 신호를 기록할때나 기록된 오디오 신호를 재생할때 상기 오디오 신호가 스테레오 인가를 감지하여 모노일때 스테레오 기록재생회로에 공급되는 전원을 자동으로 차단하여 전력소비를 방지하는 복합영상기록 재생기의 전원공급 제어장치에 관한 것이다.According to the present invention, a right channel signal input detector for detecting whether a right channel signal, which is stereo, is input from the outside in a recording mode, and a right channel carrier frequency detector for checking whether a right channel carrier frequency is present among signals picked up from a recording medium in a playback mode. And a control signal for determining whether an audio signal is mono or stereo by receiving data output from the right channel signal input detector and the right channel carrier frequency detector, and supplying the corresponding control signal to the matrix unit for selecting an input / output signal. And a power switch which operates according to the level of the control signal output from the control signal generator and switches the power supplied to the stereo recording / reproducing circuit, when recording or recording an external audio signal in the composite video recording / reproducing device. When playing back the audio signal, the audio signal is detected The present invention relates to a power supply control apparatus for a composite video recording / reproducing apparatus which automatically cuts off power supplied to a stereo recording / reproducing circuit when mono is used to prevent power consumption.

Description

복합 영상기록 재생기의 전원공급 제어장치Power supply control device of composite video recorder

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

제3도는 본 발명의 일실시예에 따른 전원공급 제어장치를 채용한 복합영상기록 재생기의 오디오 신호처리회로를 나타낸 도면.3 is a diagram showing an audio signal processing circuit of a composite video recorder employing a power supply control device according to an embodiment of the present invention.

제4도는 본 발명의 다른 실시예에 의한 전원공급 제어장치를 채용한 캠코더의 입력오디오 처리회로도.4 is an input audio processing circuit diagram of a camcorder employing a power supply control device according to another embodiment of the present invention.

Claims (3)

기록모드시 스테레오인 우채널 신호가 외부로부터 입력되는가를 감지하는 우채널 신호입력 감지부와, 재생모드시 기록매체에서 픽업된 신호중에 우채널 캐리어 주파수가 있는가를 감지하는 우채널 캐리어 주파수 감지부와, 상기 우채널 신호입력 감지부와 우채널 캐리어 주파수 감지부에서 출력된 데이터를 받아 오디오 신호가 모노인가 스테레오인가를 판단하여 이에 해당된 제어신호를 입출력신호를 선택하는 매트릭스부에 공급하는 제어신호 발생부와, 상기 제어신호 발생부에서 출력되는 제어신호의 레벨에 따라 작동하여 스테레오 기록재생회로에 공급되는 전원을 스위칭하는 전원 스위칭부로 구성된 것을 특징으로 하는 복합영상기록 재생기의 전원공급제어장치.A right channel signal input detector for detecting whether a right channel signal in stereo is input from the outside in a recording mode, a right channel carrier frequency detector for detecting whether a right channel carrier frequency is present in a signal picked up from a recording medium in a playback mode; The control signal generator that receives the data output from the right channel signal input detector and the right channel carrier frequency detector to determine whether an audio signal is mono or stereo and supplies the corresponding control signal to a matrix unit for selecting an input / output signal. And a power switching unit which operates in accordance with the level of the control signal output from the control signal generating unit to switch the power supplied to the stereo recording and reproducing circuit. 제1항에 있어서, 상기 우채널 캐리어 주파수 감지부는 기록재생헤드에 의해서 픽업된 오디오 신호중에 1.7MHz대의 캐리어 주파수를 필터링하여 출력하는 밴드패드 필터의 출력단에 접속되어 우채널 오디오신호가 존재하는가 감지하여 이에 데이타를 출력하도록 구성된 것을 특징으로 하는 복합영상기록 재생기의 전원공급제어장치.The audio signal detection unit of claim 1, wherein the right channel carrier frequency detector is connected to an output terminal of a band pad filter for filtering and outputting 1.7 MHz of carrier frequencies among the audio signals picked up by the recording / reproducing head to detect whether there is a right channel audio signal. The apparatus for supplying power to a composite video recorder, characterized in that for outputting data. 마이크로폰 등에서 출력되는 외부음성 신호를 입력하는 외부음성 신호입력부와 재생오디오 신호입력부에서 출력되는 신호를 선택하여 오디오 신호처리부에 공급하는 선택부로 구성된 입력오디오 처리회로와, 상기 입력오디오 처리회로에 공급되는 전원공급부의 출력전압을 차단하기 위해 시스템에 입력되는 데이터에 따라 소정의 제어신호를 출력하는 전원공급 제어부와, 상기 전원공급 제어부에서 출력되는 제어신호의 레벨에 따라 입력오디오 처리회로에 공급되는 전원공급부의 출력전압을 스위칭하는 전원스위칭부로 구성된 것을 특징으로 하는 복합영상기록 재생기의 전원공급제어장치.An input audio processing circuit comprising an external audio signal input unit for inputting an external audio signal output from a microphone, a selection unit for selecting a signal output from the playback audio signal input unit and supplying the signal to an audio signal processing unit, and a power supply supplied to the input audio processing circuit A power supply control unit for outputting a predetermined control signal according to data input to the system to cut off the output voltage of the supply unit, and a power supply unit supplied to the input audio processing circuit according to the level of the control signal output from the power supply control unit. Power supply control device for a composite video recording and reproducing, characterized in that consisting of a power switching unit for switching the output voltage. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930030107A 1993-12-28 1993-12-28 Apparatus for controlling power of vcr KR960014387B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930030107A KR960014387B1 (en) 1993-12-28 1993-12-28 Apparatus for controlling power of vcr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930030107A KR960014387B1 (en) 1993-12-28 1993-12-28 Apparatus for controlling power of vcr

Publications (2)

Publication Number Publication Date
KR950020688A true KR950020688A (en) 1995-07-24
KR960014387B1 KR960014387B1 (en) 1996-10-15

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Application Number Title Priority Date Filing Date
KR1019930030107A KR960014387B1 (en) 1993-12-28 1993-12-28 Apparatus for controlling power of vcr

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KR960014387B1 (en) 1996-10-15

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