KR900000884A - Control signal duty ratio determination method of video cassette recorder - Google Patents

Control signal duty ratio determination method of video cassette recorder Download PDF

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Publication number
KR900000884A
KR900000884A KR1019880008053A KR880008053A KR900000884A KR 900000884 A KR900000884 A KR 900000884A KR 1019880008053 A KR1019880008053 A KR 1019880008053A KR 880008053 A KR880008053 A KR 880008053A KR 900000884 A KR900000884 A KR 900000884A
Authority
KR
South Korea
Prior art keywords
control signal
duty ratio
determination method
video cassette
cassette recorder
Prior art date
Application number
KR1019880008053A
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Korean (ko)
Other versions
KR950013377B1 (en
Inventor
김동수
Original Assignee
최근선
주식회사 금성사
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 최근선, 주식회사 금성사 filed Critical 최근선
Priority to KR1019880008053A priority Critical patent/KR950013377B1/en
Publication of KR900000884A publication Critical patent/KR900000884A/en
Application granted granted Critical
Publication of KR950013377B1 publication Critical patent/KR950013377B1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing

Abstract

내용 없음No content

Description

비디오 카세트 레코더의 제어신호 듀티비 판별방법Control signal duty ratio determination method of video cassette recorder

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

제1도의 (가)(나)는 데이타신호가 코드화된 제어신호를 보인 파형도.Fig. 1A is a waveform diagram showing a control signal coded with a data signal.

제2도는 본 발명의 방법에 의한 회로도.2 is a circuit diagram according to the method of the present invention.

제3도의 (가)(나)는 제2부 각도의 파형도.(A) and (b) of FIG. 3 are waveform diagrams of the angle of the second part.

Claims (1)

VISS 및 VASS 등의 서비스기능이 있는 비디오 카세트 레코더에 있어서 재생된 제어신호가 저전위에서 고전위로 변환될 경우에는 카운터(41)를 가산카운트하고, 고전위에서 저전위로 변환될 경우에는 감산카운트하면서 카운터(13)에서 캐리가 발생함에 따라 제어신호에 코드화된 데이타신호를 검출하고, 카운터(41)의 카운트시간이 기준시간 이상일 경우에 에러발생신호를 출력하여 에러의 발생을 알리게 함을 특징으로 하는 비디오 카세트 레코더의 제어신호 듀티비 판별방법.In a video cassette recorder having a service function such as VISS and VASS, the counter 41 is counted up when the reproduced control signal is converted from the low potential to the high potential, and is counted down while the counter is reduced from the high potential to the low potential (13). ) Detects the data signal coded in the control signal as carry occurs, and outputs an error occurrence signal when the count time of the counter 41 is greater than or equal to the reference time to notify the occurrence of an error. Control signal duty ratio determination method of the. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880008053A 1988-06-30 1988-06-30 Control signal duty-ration discrimination method & apparatus of vcr KR950013377B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880008053A KR950013377B1 (en) 1988-06-30 1988-06-30 Control signal duty-ration discrimination method & apparatus of vcr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019880008053A KR950013377B1 (en) 1988-06-30 1988-06-30 Control signal duty-ration discrimination method & apparatus of vcr

Publications (2)

Publication Number Publication Date
KR900000884A true KR900000884A (en) 1990-01-31
KR950013377B1 KR950013377B1 (en) 1995-11-02

Family

ID=19275743

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880008053A KR950013377B1 (en) 1988-06-30 1988-06-30 Control signal duty-ration discrimination method & apparatus of vcr

Country Status (1)

Country Link
KR (1) KR950013377B1 (en)

Also Published As

Publication number Publication date
KR950013377B1 (en) 1995-11-02

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