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FR2491698B1 - Circuit pour deduire un signal de synchronisation de trame d'un signal de synchronisation de television - Google Patents

Circuit pour deduire un signal de synchronisation de trame d'un signal de synchronisation de television

Info

Publication number
FR2491698B1
FR2491698B1 FR8118877A FR8118877A FR2491698B1 FR 2491698 B1 FR2491698 B1 FR 2491698B1 FR 8118877 A FR8118877 A FR 8118877A FR 8118877 A FR8118877 A FR 8118877A FR 2491698 B1 FR2491698 B1 FR 2491698B1
Authority
FR
France
Prior art keywords
synchronization signal
deducing
circuit
television
frame synchronization
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
FR8118877A
Other languages
English (en)
Other versions
FR2491698A1 (fr
Inventor
Dirk Braune
Wolfgang Schwartz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2491698A1 publication Critical patent/FR2491698A1/fr
Application granted granted Critical
Publication of FR2491698B1 publication Critical patent/FR2491698B1/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04N5/10—Separation of line synchronising signal from frame synchronising signal or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Synchronizing For Television (AREA)
FR8118877A 1980-10-08 1981-10-07 Circuit pour deduire un signal de synchronisation de trame d'un signal de synchronisation de television Expired FR2491698B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3037987A DE3037987C2 (de) 1980-10-08 1980-10-08 Schaltungsanordnung zum Ermitteln eines Impulses bestimmter Mindestlänge in einem Impulsgemisch

Publications (2)

Publication Number Publication Date
FR2491698A1 FR2491698A1 (fr) 1982-04-09
FR2491698B1 true FR2491698B1 (fr) 1986-01-03

Family

ID=6113905

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8118877A Expired FR2491698B1 (fr) 1980-10-08 1981-10-07 Circuit pour deduire un signal de synchronisation de trame d'un signal de synchronisation de television

Country Status (5)

Country Link
US (1) US4414570A (fr)
JP (1) JPS5792980A (fr)
DE (1) DE3037987C2 (fr)
FR (1) FR2491698B1 (fr)
GB (1) GB2085687B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491870A (en) * 1982-08-17 1985-01-01 Rca Corporation Digital sync separator
JPS59126372A (ja) * 1983-01-06 1984-07-20 Matsushita Electric Ind Co Ltd 雑音除去装置
DE3343455A1 (de) * 1983-12-01 1985-06-13 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zum erkennen der vertikalaustastluecke in einem bildsignal
GB8414314D0 (en) * 1984-06-05 1984-07-11 Motorola Inc Vertical synchronisation pulse separator
DE3443925C1 (de) * 1984-12-01 1986-01-30 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zum Unterscheiden der beiden Halbbilder in einem Fernsehsignal
US4763341A (en) * 1987-02-25 1988-08-09 The Grass Valley Group, Inc. Digital timing using a state machine
DE3809076A1 (de) * 1988-03-18 1989-09-28 Philips Patentverwaltung Schaltungsanordnung zur auswertung eines video-synchronsignales
US5341217A (en) * 1990-03-06 1994-08-23 Martin Marietta Corporation Digital adaptive video synchronizer
CN107846587B (zh) * 2017-10-30 2019-07-12 威创集团股份有限公司 场同步宽度检测方法和系统
CN111010519B (zh) * 2019-12-23 2021-09-24 深圳创维－Rgb电子有限公司 显示装置的控制方法、电视和存储介质

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753135A (en) * 1970-10-27 1973-08-14 Fernseh Gmbh Pulse width discriminator
US3671669A (en) * 1970-12-14 1972-06-20 Bell Telephone Labor Inc Recovery of horizontal sync pulses from a composite synchronizing format
US3835336A (en) * 1973-03-23 1974-09-10 Rca Corp Pulse width sensing circuit
JPS5729108B2 (fr) * 1973-06-19 1982-06-21
US3878335A (en) * 1973-10-18 1975-04-15 Rca Corp Digital synchronization system
DE2604523A1 (de) * 1976-02-06 1977-08-11 Bosch Gmbh Robert Verfahren zur genauen bestimmung der zeitlichen lage des vertikalanteils in einem fernseh-synchronsignal
JPS6032379B2 (ja) * 1976-07-21 1985-07-27 松下電器産業株式会社 デイジタル同期信号分離回路
JPS5321517A (en) * 1976-08-12 1978-02-28 Nippon Television Ind Corp Synchronizing signal selection circuit
US4068180A (en) * 1976-10-22 1978-01-10 Schlumberger Technology Corporation Methods and apparatus for enhancing resolution in pulse analysis
DE2742525C3 (de) * 1977-09-21 1986-10-23 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zum Erkennen von Gleichstromsignalen vorgegebener Mindestdauer in Fernmeldeanlagen, insbesondere zum Erkennen von Anrufsignalen vorgegebener Dauer in Fernschreibvermittlungsanlagen
JPS54104230A (en) * 1978-02-03 1979-08-16 Sony Corp Processing circuit for vertical synchronizing signal
NL7811812A (nl) * 1978-12-04 1980-06-06 Philips Nv Televisieschakeling voor het afleiden van een raster- synchroniseersignaal uit een samengesteld synchroni- seersignaal.
DE2951023C2 (de) * 1979-12-19 1986-07-10 Robert Bosch Gmbh, 7000 Stuttgart Schaltungsanordnung zum Erkennen von Störungen in Impulssignalen
US4319275A (en) * 1980-04-30 1982-03-09 Zenith Radio Corporation Vertical synchronization detection system and method
US4334243A (en) * 1981-01-12 1982-06-08 Zenith Radio Corporation Pulse width limiter

Also Published As

Publication number Publication date
DE3037987A1 (de) 1982-05-06
GB2085687B (en) 1984-08-08
FR2491698A1 (fr) 1982-04-09
JPS5792980A (en) 1982-06-09
DE3037987C2 (de) 1985-07-25
US4414570A (en) 1983-11-08
GB2085687A (en) 1982-04-28

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Legal Events

Date Code Title Description
ST Notification of lapse