KR960028398A - Audio / Video Input Automatic Switching Device - Google Patents

Audio / Video Input Automatic Switching Device Download PDF

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Publication number
KR960028398A
KR960028398A KR1019940032761A KR19940032761A KR960028398A KR 960028398 A KR960028398 A KR 960028398A KR 1019940032761 A KR1019940032761 A KR 1019940032761A KR 19940032761 A KR19940032761 A KR 19940032761A KR 960028398 A KR960028398 A KR 960028398A
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South Korea
Prior art keywords
audio
video
switching
signal
input
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KR1019940032761A
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Korean (ko)
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KR0146670B1 (en
Inventor
손태용
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배순훈
대우전자 주식회사
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Priority to KR1019940032761A priority Critical patent/KR0146670B1/en
Priority to JP7316741A priority patent/JPH08223493A/en
Priority to CN95121540A priority patent/CN1132976A/en
Publication of KR960028398A publication Critical patent/KR960028398A/en
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Publication of KR0146670B1 publication Critical patent/KR0146670B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
    • H04N21/43072—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen of multiple content streams on the same device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4341—Demultiplexing of audio and video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/439—Processing of audio elementary streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Circuits (AREA)
  • Television Receiver Circuits (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

본 발명은 오디오/비디오시스템에 있어서 오디오/비디오입력단에 오디오신호와 비디오신호증 어느 신호가 입력되더라도 비디오동기신호를 검출하여 오디오신호와 비디오신호를 자동으로 스위칭절환하여 출력하는 오디오/비디오입력의 자동절환장치를 제공하기 위한 것이다.According to the present invention, an audio / video input is automatically detected by detecting a video synchronization signal and automatically switching and outputting an audio signal and a video signal regardless of which signal is input to the audio / video input terminal in the audio / video system. To provide a switching device.

이를 위해 본 발명은, 외부로부터의 오디오신호 및 비디오신호가 입력되는 다수의 오디오/비디오입력단(10A~10C)과, 상기 다수의 오디오/비디오입력단(10A~10C)에 각각 대응하여 설치되어 해당 입력단을 통해 입력되는 입력신호의 비디오동기신호를 검출하는 다수의 동기검출부(20A~20C), 상기 동기검출부(20A~20C)로부터의 동기검출상태에 따라 하기의 오디오/비디오 스위칭부(40)와 오디오 스위칭부(50)에 스위칭 제어신호를 출력하는 제어부(30), 상기 제어부(30)으로부터 제어신호에 따라 상기 다수의 오디오/비디오입력단(10A~10C)으로부터의 신호라인중 비디오신호라인과 오디오신호라인을 스위칭 절환하여 출력하는 오디오/비디오 스위칭부(40) 및, 상기 제어부(30)로부터의 제어신호에 따라 상기 오디오/비디오 스위칭부(40)로부터의 오디오신호라인중에서 오디오신호가 입력되는 라인만을 스위칭선택하여 출력하는 오디오 스위칭부(50)로 이루어진 것을 특징으로 한다.To this end, the present invention is provided to correspond to the plurality of audio / video input terminals (10A ~ 10C) and the plurality of audio / video input terminals (10A ~ 10C) to which audio and video signals from the outside are input, respectively, A plurality of synchronous detection units 20A to 20C for detecting a video synchronous signal of an input signal input through the synchronous detection unit 20A to 20C, and audio / video switching unit 40 and audio according to the synchronous detection states from the synchronous detection units 20A to 20C. The control unit 30 outputs a switching control signal to the switching unit 50, and the video signal line and the audio signal among the signal lines from the plurality of audio / video input terminals 10A to 10C according to the control signal from the control unit 30. An audio / video switching unit 40 for switching and outputting a line and an audio signal line from the audio / video switching unit 40 according to a control signal from the control unit 30. It characterized by comprising an audio switching unit 50, which signal is input to the output that is selected only the switching line.

Description

오디오/비디오입력의 자동절환장치Audio / Video Input Automatic Switching Device

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

제1도는 본 발명에 따른 오디오/비디오입력의 자동절환장치를 나타낸 블럭도.1 is a block diagram showing an automatic switching device of an audio / video input according to the present invention.

Claims (6)

외부로부터의 오디오신호 및 비디오신호가 입력되는 다수의 오디오/비디오입력단(10A~10C)과, 상기 다수의 오디오/비디오입력단(10A~10C)에 각각 대응하여 설치되어 해당 입력단을 통해 입력되는 입력신호의 비디오동기신호를 검출하는 다수의 동기검출부(20A~20C), 상기 동기검출부(20A~20C)로부터의 동기검출상태에 따라 하기의 오디오/비디오 스위칭부(40)와 오디오 스위칭부(50)에 스위칭 제어신호를 출력하는 제어부(30), 상기 제어부(30)으로부터의 제어신호에 따라 상기 다수의 오디오/비디오입력단(10A~10C)으로부터의 신호라인중 비디오신호라인과 오디오신호라인을 스위칭 절환하여 출력하는 오디오/비디오 스위칭부(40) 및, 상기 제어부(30)로부터의 제어신호에 따라 상기 오디오/비디오 스위칭부(40)로부터의 오디오신호라인중에서 오디오신호가 입력되는 라인만을 스위칭선택하여 출력하는 오디오스위칭부(50)로 이루어진 것을 특징으로 하는 오디오/비디오입력의 자동절환장치.Input signals input through a plurality of audio / video input terminals 10A to 10C to which audio signals and video signals from the outside are input, and corresponding to the plurality of audio / video input terminals 10A to 10C, respectively, and input through the corresponding input terminals. The audio / video switching unit 40 and the audio switching unit 50 according to the synchronization detection unit 20A to 20C and the synchronization detection state from the synchronization detection unit 20A to 20C for detecting the video synchronization signal of The control unit 30 for outputting a switching control signal, the switching of the video signal line and the audio signal line of the signal lines from the plurality of audio / video input terminal (10A ~ 10C) in accordance with the control signal from the control unit 30 The audio signal is input from the audio / video switching unit 40 and the audio signal line from the audio / video switching unit 40 according to the control signal from the control unit 30. Only the automatic changer of the audio / video input, characterized in that consisting of the audio switching unit 50 for selecting and outputting switching. 제1항에 있어서, 상기 다수의 오디오/비디오입력단(10A~10C)은 3개로 이루어지고, 상기 오디오/비디오 스위칭부(40)는 상기 제1비디오입력단(10A)으로부터의 신호입력을 상기 제어부(30)로부터의 제1제어신호에 따라 제1오디오신호라인(A1) 또는 제1비디오신호라인(V1)으로 스위칭절환하는 제1스위칭수단(40A)과, 상기 제2비디오입력단(10B)으로부터의 신호입력을 상기 제어부(30)로부터의 제2제어신호에 따라 제2오디오신호라인(A2) 또는 제2비디오신호라인(V2)으로 스위칭절환하는 제2스위칭수단40B) 및, 상기 제3비디오입력단(10C)으로부터의 신호입력을 상기 제어부(30)로부터의 제3제어신호에 따라 제3오디오신호라인(A3) 또는 제3비디오신호라인(V3)으로 스위칭절환하는 제3스위칭수단(40C)으로 구성된 것을 특징으로 하는 오디오/비디오입력의 자동절환장치.According to claim 1, wherein the plurality of audio / video input terminals (10A ~ 10C) is made of three, the audio / video switching unit 40 is the control unit (A) to input the signal from the first video input terminal (10A) The first switching means 40A for switching to the first audio signal line A1 or the first video signal line V1 in accordance with the first control signal from 30, and from the second video input terminal 10B. Second switching means 40B for switching a signal input to a second audio signal line A2 or a second video signal line V2 according to a second control signal from the controller 30, and the third video input terminal. To the third switching means 40C for switching the signal input from 10C to the third audio signal line A3 or the third video signal line V3 in accordance with the third control signal from the controller 30. Automatic switching device of the audio / video input, characterized in that configured. 제2항에 있어서, 상기 제1 내지 제3비디오라인(V1~V3)은 공통접속되어 비디오신호처리부(70)에 접속된 것을 특징으로 하는 오디오/비디오입력의 자동절환장치.3. The automatic switching device of audio / video input according to claim 2, wherein the first to third video lines (V1 to V3) are connected in common and connected to a video signal processing unit (70). 제1항 또는 제2항에 있어서, 상기 오디오 스위칭부(40)는 상기 제어부(30)로부터의 제4제어신호에 따라 상기 제1스위칭수단(40A)으로부터의 제1오디오신호라인(A1) 또는 상기 제2스위칭수단(40B)으로부터의 제2오디오신호라인(A2)을 스위칭선택하여 제1오디오신호로서 오디오신호처리부(60)로 출력하는 제4스위칭수단(50A)과, 상기 제어부(30)로부터의 제5제어신호에 따라 상기 제2스위칭수단(40B)으로부터의 제2오디오신호라인(A2) 또는 상기 제3스위칭수단(40C)으로부터의 제3오디오신호라인(A3)을 스위칭선택하여 제2오디오신호로서 오디오신호처리부(60)로 출력하는 제5스위칭수단(50A)으로 이루어진 것을 특징으로 하는 오디오/비디오입력의 자동절환장치.3. The audio switching unit (40) according to any one of claims 1 to 4, wherein the audio switching unit (40) is connected to the first audio signal line (A1) or from the first switching means (40A) in accordance with a fourth control signal from the control unit (30). A fourth switching means 50A for switching the second audio signal line A2 from the second switching means 40B and outputting the first audio signal to the audio signal processor 60 as a first audio signal, and the controller 30; Switching and selecting the second audio signal line A2 from the second switching means 40B or the third audio signal line A3 from the third switching means 40C according to the fifth control signal from the second switching means 40B. 2. An automatic switching device for audio / video input, characterized in that it comprises a fifth switching means (50A) which is output as an audio signal to an audio signal processing unit (60). 제4항에 있어서, 상기 제어부(30)로부터의 제4 및 제5제어신호는 상기 제1 내지 제3제어신호중 서로 다른 어느 하나로 이루어지는 것을 특징으로 하는 오디오/비디오입력의 자동절환장치.5. The automatic switching device of audio / video input according to claim 4, wherein the fourth and fifth control signals from the control unit (30) comprise any one of the first to third control signals. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940032761A 1994-12-05 1994-12-05 Automatic switching apparatus of audio and video input signals KR0146670B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019940032761A KR0146670B1 (en) 1994-12-05 1994-12-05 Automatic switching apparatus of audio and video input signals
JP7316741A JPH08223493A (en) 1994-12-05 1995-12-05 Audio/video input signal automatic witching device in recording reproducing system of audio/video
CN95121540A CN1132976A (en) 1994-12-05 1995-12-05 Apparatus for automatically switching audio/video input signals in audio/video recording/reproducing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940032761A KR0146670B1 (en) 1994-12-05 1994-12-05 Automatic switching apparatus of audio and video input signals

Publications (2)

Publication Number Publication Date
KR960028398A true KR960028398A (en) 1996-07-22
KR0146670B1 KR0146670B1 (en) 1998-09-15

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KR1019940032761A KR0146670B1 (en) 1994-12-05 1994-12-05 Automatic switching apparatus of audio and video input signals

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JP (1) JPH08223493A (en)
KR (1) KR0146670B1 (en)
CN (1) CN1132976A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1186518A (en) * 1997-09-10 1999-03-30 Sony Corp Audio signal processor
ID27676A (en) * 1997-09-11 2001-04-19 Sony Corp ELECTRONIC EQUIPMENT
TWI384870B (en) * 2006-01-03 2013-02-01 Mstar Semiconductor Inc Method of auto-switching audio-video signals and associated apparatus
TW200826666A (en) 2006-12-08 2008-06-16 Wistron Corp Auto-detection circuit and control method for video signals
CN101207706B (en) * 2006-12-22 2010-04-21 纬创资通股份有限公司 Image automatic detection circuit and control method thereof
CN111091793B (en) * 2018-10-24 2022-04-26 厦门雅迅网络股份有限公司 Input protection circuit and detection method for vehicle-mounted reversing video

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CN1132976A (en) 1996-10-09
JPH08223493A (en) 1996-08-30
KR0146670B1 (en) 1998-09-15

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