KR890011383A - TV sync signal detection system - Google Patents

TV sync signal detection system Download PDF

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Publication number
KR890011383A
KR890011383A KR870013981A KR870013981A KR890011383A KR 890011383 A KR890011383 A KR 890011383A KR 870013981 A KR870013981 A KR 870013981A KR 870013981 A KR870013981 A KR 870013981A KR 890011383 A KR890011383 A KR 890011383A
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KR
South Korea
Prior art keywords
synchronization signal
count
repeated
predetermined value
counter
Prior art date
Application number
KR870013981A
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Korean (ko)
Other versions
KR910001652B1 (en
Inventor
최동진
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.)
Filing date
Publication date
Application filed by 최근선, 주식회사 금성사 filed Critical 최근선
Priority to KR1019870013981A priority Critical patent/KR910001652B1/en
Publication of KR890011383A publication Critical patent/KR890011383A/en
Application granted granted Critical
Publication of KR910001652B1 publication Critical patent/KR910001652B1/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
    • H04N5/06—Generation of synchronising signals
    • 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)
  • Synchronizing For Television (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

내용 없음No content

Description

텔레비젼 동기 신호 검출방식TV sync signal detection system

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

제1도는 본 발명의 텔레비젼 동기신호 검출장치 블록도1 is a block diagram of a television synchronization signal detection apparatus of the present invention.

Claims (1)

동기분리회로(3)에서 출력되는 동기신호를 마이크로 컴퓨터(1)의 카운터(13)에서 타이머(12)에 의한 일정기간(Nms)계수하고, 그 계수한 동기신호 갯수(M)가 소정 범위(a≤M≤b)에 속하는 경우에는 이전에 동기신호가 없었을 때 그 카운터(13)를 리세트한 후 상기 동작을 반복 수행하고, 이 전에 동시 신호가 있었을 때 카운트 "1"을 증가하고, 그 카운트가 소정값 p가 아닌 경우에는 곧바로, 소정값 p인 경우에는 방송이 있다고 판정한 후 상기 동작을 반복 수행하며, 상기 계수한 동기신호 갯수(M)가 상기 소정 범위에 속하지 않는 경우에는 이전에 동기신호가 있었을 때 그 카운터(13)를 리세트한 후 상기 동작을 반복 수행하고, 이전에 동기신호가 없었을 때 카운트 "1"을 증가하고, 그 카운트가 소정값 q가 아닌 경우에는 곧바로, 소정값 q인 경우에는 방송이 없다고 판정한 후 상기 동작을 반복 수행하게 함을 특징으로 하는 텔레비젼 동기신호 검출방식.The counter 13 of the microcomputer 1 counts a predetermined period (Nms) of the synchronization signal output from the synchronization separation circuit 3 by the timer 12, and the counted number of synchronization signals M is within a predetermined range ( If a≤M≤b), the counter 13 is reset when there is no synchronization signal before, and the above operation is repeated, and when the simultaneous signal is present, the count "1" is increased, and If the count is not the predetermined value p, immediately, if the predetermined value p is determined to be broadcast, the operation is repeated, and if the counted synchronization signal number M does not fall within the predetermined range, When the synchronization signal is present, the counter 13 is reset and the above operation is repeated. When the synchronization signal was not present, the count is increased to "1", and when the count is not the predetermined value q, the predetermined value is immediately If the value q, no broadcast After the television set by the synchronization signal detecting method, characterized in that to perform said operation is repeated. ※ 참고사항：최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019870013981A 1987-12-08 1987-12-08 Television synchronization signal detecting method KR910001652B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019870013981A KR910001652B1 (en) 1987-12-08 1987-12-08 Television synchronization signal detecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019870013981A KR910001652B1 (en) 1987-12-08 1987-12-08 Television synchronization signal detecting method

Publications (2)

Publication Number Publication Date
KR890011383A true KR890011383A (en) 1989-08-14
KR910001652B1 KR910001652B1 (en) 1991-03-16

Family

ID=19266738

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870013981A KR910001652B1 (en) 1987-12-08 1987-12-08 Television synchronization signal detecting method

Country Status (1)

Country Link
KR (1) KR910001652B1 (en)

Also Published As

Publication number Publication date
KR910001652B1 (en) 1991-03-16

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