KR940025283A - Sync signal separator - Google Patents

Sync signal separator Download PDF

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Publication number
KR940025283A
KR940025283A KR1019930005641A KR930005641A KR940025283A KR 940025283 A KR940025283 A KR 940025283A KR 1019930005641 A KR1019930005641 A KR 1019930005641A KR 930005641 A KR930005641 A KR 930005641A KR 940025283 A KR940025283 A KR 940025283A
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KR
South Korea
Prior art keywords
signal
masking
receiving
output
video
Prior art date
Application number
KR1019930005641A
Other languages
Korean (ko)
Other versions
KR0139181B1 (en
Inventor
황덕원
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.)
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Publication date
Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019930005641A priority Critical patent/KR0139181B1/en
Publication of KR940025283A publication Critical patent/KR940025283A/en
Application granted granted Critical
Publication of KR0139181B1 publication Critical patent/KR0139181B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising

Abstract

본 발명은 비데오테이프레코더의 영상신호처리장치에 있어서 동기신호를 분리하는 장치에 관한 것으로, 특히 입력영상신호로부터 동기신호에 해당하는 대역의 디지털 마스킹신호를 추출하고, 입력영상신호를 복조한 신호를 소정의 기준동기레벨과 비교하여 출력한 신호를 마스킹부에서 마스킹신호가 유효한 부분의 동기신호만을 분리해냄으로써, 보다 정확한 영상신호처리를 하기 위한 동기신호 분리장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for separating a synchronization signal in a video signal processing apparatus of a video tape recorder. In particular, a digital masking signal of a band corresponding to the synchronization signal is extracted from an input video signal, and a signal obtained by demodulating the input video signal is obtained. The present invention relates to a synchronization signal separation device for performing a more accurate video signal processing by separating only the synchronization signal of a portion in which a masking signal is valid in a masking unit from a signal output compared with a predetermined reference synchronization level.

Description

동기신호 분리장치Sync signal separator

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

제 2 도는 본 발명에 의한 동기신호 분리장치의 일 실시예를 나타내는 블록도, 제 3 도는 제 2 도 장치의 동작을 설명하기 위한 파형도.2 is a block diagram showing an embodiment of a synchronization signal separation device according to the present invention, and FIG. 3 is a waveform diagram for explaining the operation of the device.

Claims (2)

비데오테이프레코더의 영상신호처리장치에 있어서, 수신된 신호로 공급받아 영상신호를 복조하여 비교수단의 제 1 입력단으로 출력하는 복조수단 ; 상기 영상신호를 제 1 입력단으로 인가받고, 소정의 기준동기레벨을 제 2 입력단으로 인가받아 비교하여 마스킹수단으로 출력하는 비교수단 ; 상기 수신된 신호를 소정의 대역폭에 해당하는 신호만을 추출하여 출력하는 밴드패스필터 ; 상기 밴드패스필터로부터 출력되는 신호의 포락선을 검출하여 마스킹신호를 출력하는 포락선검출수단 ; 및 상기 포락선검출수단으로부터 마스킹신호를 공급받고 상기 비교기로부터 출력되는 비교신호를 공급받아 분리한 동기신호를 출력하는 마스킹수단을 포함하는 동기신호 분리장치.A video signal processing apparatus for a video tape recorder, comprising: demodulation means for receiving a received signal and demodulating the video signal to output to a first input terminal of the comparison means; Comparison means for receiving the video signal to a first input terminal, receiving a predetermined reference synchronization level to a second input terminal, and comparing the image signal to a masking means; A band pass filter configured to extract and output only the signal corresponding to a predetermined bandwidth from the received signal; Envelope detection means for detecting an envelope of a signal output from the band pass filter and outputting a masking signal; And a masking means for receiving a masking signal from the envelope detecting means and receiving a comparison signal output from the comparator and outputting a separated synchronous signal. 제 1 항에 있어서, 상기 마스킹수단은 상기 비교기로부터 출력되는 신호에 대해 상기 마스킹신호가 유효한 부분의 신호만을 추출하여 출력하는 것을 특징으로 하는 동기신호 분리장치.The apparatus of claim 1, wherein the masking means extracts and outputs only a signal of a portion in which the masking signal is valid with respect to the signal output from the comparator. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930005641A 1993-04-03 1993-04-03 Sync signal separation apparatus KR0139181B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930005641A KR0139181B1 (en) 1993-04-03 1993-04-03 Sync signal separation apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930005641A KR0139181B1 (en) 1993-04-03 1993-04-03 Sync signal separation apparatus

Publications (2)

Publication Number Publication Date
KR940025283A true KR940025283A (en) 1994-11-19
KR0139181B1 KR0139181B1 (en) 1998-05-15

Family

ID=19353479

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930005641A KR0139181B1 (en) 1993-04-03 1993-04-03 Sync signal separation apparatus

Country Status (1)

Country Link
KR (1) KR0139181B1 (en)

Also Published As

Publication number Publication date
KR0139181B1 (en) 1998-05-15

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