KR930020966A - Audio / Video Automatic Switching Device and Method - Google Patents

Audio / Video Automatic Switching Device and Method Download PDF

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Publication number
KR930020966A
KR930020966A KR1019920005076A KR920005076A KR930020966A KR 930020966 A KR930020966 A KR 930020966A KR 1019920005076 A KR1019920005076 A KR 1019920005076A KR 920005076 A KR920005076 A KR 920005076A KR 930020966 A KR930020966 A KR 930020966A
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KR
South Korea
Prior art keywords
audio
signal
unit
video
synchronization
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Application number
KR1019920005076A
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Korean (ko)
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KR950007872B1 (en
Inventor
손규성
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이헌조
주식회사 금성사
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Priority to KR1019920005076A priority Critical patent/KR950007872B1/en
Publication of KR930020966A publication Critical patent/KR930020966A/en
Application granted granted Critical
Publication of KR950007872B1 publication Critical patent/KR950007872B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture signals

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Studio Circuits (AREA)
  • Color Television Systems (AREA)

Abstract

본 발명은 오디오/비디오 자동 절환장치 및 방법에 관한 것으로, 일반적인 TV의 오디오/비디오 입력 절환 시스템은 외부 입력신호를 오디오신호와 비디오신호를 구분하여 입력함으로써 잘못 연결하였을때 오동작을 하는 경우가 있고, 이를 확인하기 위해서는 TV의 방향을 틀어서 확인한 다음 재위치에 놓아햐 하는 번거로운 문제점이 있었다. 이를 보완하기 위한 본 발명은 외부의 오디오 또는 비디오신호에서 동기 신호를 카운트하는 동기계수부와, 그 동기계수부로 부터 계수된 동기신호의 유, 무를 판단하여 시스템 전체 동작을 제어하는 마이콤과, 외부오디오, 비디오신호의 절환상태를 수동 및 자동모드로 절환토록 마이콤에 입력하는 자동/수동절환스위치과, 상기 마이콤의 제어신호에 따라 외부 오디오 신호 및 비디오신호를 오디오처리부 및 크로마부로 자동절환하는 제1오디오/비디오 선택부로 구성함으로써 외부의 입력을 확인하지 않고 임의로 연결하더라도 오디오신호는 오디오처리부로, 비디오신호는 크로마부로 자동 절환하게 되는 것이다.The present invention relates to an audio / video automatic switching device and method. In general, an audio / video input switching system of a TV may malfunction when an external input signal is incorrectly connected by separately inputting an audio signal and a video signal. In order to check this, there was a troublesome problem of turning the TV and then putting it back in place. The present invention to compensate for this is a synchronization coefficient unit for counting the synchronization signal from the external audio or video signal, a microcomputer to control the overall operation of the system by determining the presence or absence of the synchronization signal counted from the synchronization coefficient unit, external audio An automatic / manual switching switch for inputting the switching state of the video signal into the manual and automatic modes to the microcomputer, and the first audio / automatically switching the external audio signal and the video signal to the audio processing unit and the chroma unit according to the control signal of the microcomputer. By configuring the video selector, the audio signal is automatically switched to the audio processing unit and the video signal is automatically converted to the chroma unit even if the external input is arbitrarily connected.

Description

오디오/비디오 자동 절환장치 및 방법Audio / Video Automatic Switching Device and Method

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

제1도는 종래 오디오/비디오 입력 절환 시스템 구성도.1 is a block diagram of a conventional audio / video input switching system.

제2도는 본 발명 오디오/비디오 입력 자동 절환 시스템 구성도.2 is a schematic diagram of an audio / video input automatic switching system according to the present invention.

제3도는 제2도의 동작 설명에 대한 신호 흐름도.3 is a signal flow diagram for explaining the operation of FIG.

Claims (3)

외부의 오디오신호 및 비디오신호에서 동기신호를 검출하여 분리하는 동기분리부(8)와, 상기 동기분리부(8)에서 분리된 동기신호를 카운트하는 동기계수부(9)와, 상기 동기계수부(9)에서 출력되는 동기신호의 유,무를 판단하고 키이입력부(5)의 선택모드에 따라 시스템 전체 동작을 제어하는 마이콤(4)과, 상기 외부 오디오, 비디오신호의 절환상태를 수동모드 및 자동모드로 선택하여 마이콤(4)에 입력하는 자동/수동 절환스위치(10)와, 상기 마이콤(4)의 제어신호에 따라 절환되어 외부입력단자(12)(13)의 오디오신호 및 비디오신호를 선택스위칭하며 제2오디오/비디오선택부(1)를 통해 함께 오디오처리부(2) 및 크로마부(3)에 출력하는 제1오디오/비디오선택부(11)를 포함하며 된 오디오/비디오 자동 절환장치.A synchronization separator 8 for detecting and separating a synchronization signal from an external audio signal and a video signal, a synchronization coefficient unit 9 for counting the synchronization signal separated from the synchronization separator 8, and the synchronization coefficient unit (9) a microcomputer (4) for judging the presence or absence of the synchronous signal output from the control unit and controlling the entire system operation according to the selection mode of the key input unit (5); Selected as the mode, the automatic / manual switching switch 10 to be input to the microcomputer 4 and the switch according to the control signal of the microcomputer 4 to select audio signals and video signals of the external input terminals 12 and 13. And a first audio / video selection unit (11) for switching and outputting to the audio processing unit (2) and the chroma unit (3) together through a second audio / video selection unit (1). 제1항에 있어서, 제1 오디오/비디오선택부(11)는 동기계수부(9)의 신호에 따라 마이콤(4)이 동기신호의 유,무를 판단하여 동기신호가 있을때에는 외부입력단자(12)의 신호를 크로마부(3)로 절환하고 동기신호가 없을 때에는 오디오처리부(2)로 절환하는 것을 특징으로 하는 오디오/비디오 자동 절환 장치.2. The first audio / video selection unit 11 according to claim 1, wherein the first audio / video selection unit 11 determines the presence or absence of the synchronization signal according to the signal of the synchronization coefficient unit 9, and the external input terminal 12 when the synchronization signal is present. Audio / video automatic switching device, characterized by switching the signal of < RTI ID = 0.0 > 키입력부의 선택모드를 판별하여 그 선택한 모드가 TV모드이면 오디오, 비디오신호를 신호처리하고 선택한 모드가 비디오 모드이면 절환모드 상태를 체크하는 제1과정과, 상기 절환모드가 수동이면 제1, 제2 오디오/비디오 선택부를 제어하여 외부오디오는 오디오처리부로, 비디오신호는 크로마부로 절환하고 자동모드이면 외부입력신호의 동기 유, 무를 판별하는 제2과정과, 상기 동기신호가 무신호이면 오디오처리부로 절환하고 동기신호가 유신호이면 크로마부로 자동 절환한 후 동기계수부를 클리어시키는 제3과정으로 이루어짐을 특징으로 한 오디오/비디오 자동 절환방법.Determining a selection mode of the key input unit and processing audio and video signals if the selected mode is a TV mode; and checking a switching mode state if the selected mode is a video mode; 2 The audio / video selection unit controls the external audio to the audio processing unit, and the video signal is converted to the chroma unit and, in the automatic mode, the second process of determining whether or not the external input signal is synchronized, and if the synchronization signal is no signal, to the audio processing unit. And a third process of automatically switching to a chroma unit and then clearing the synchronization coefficient unit if the synchronization signal is a valid signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920005076A 1992-03-27 1992-03-27 Apparatus and method for automatically switching audio/video KR950007872B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920005076A KR950007872B1 (en) 1992-03-27 1992-03-27 Apparatus and method for automatically switching audio/video

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920005076A KR950007872B1 (en) 1992-03-27 1992-03-27 Apparatus and method for automatically switching audio/video

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KR930020966A true KR930020966A (en) 1993-10-20
KR950007872B1 KR950007872B1 (en) 1995-07-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100425098B1 (en) * 2001-08-04 2004-03-30 엘지전자 주식회사 Method and apparatus for processing input signal of digital TV

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100425098B1 (en) * 2001-08-04 2004-03-30 엘지전자 주식회사 Method and apparatus for processing input signal of digital TV

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Publication number Publication date
KR950007872B1 (en) 1995-07-20

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