FR2432252A1 - Synchronisateur d'image comportant un circuit d'unhibition d'ecriture - Google Patents

Synchronisateur d'image comportant un circuit d'unhibition d'ecriture

Info

Publication number
FR2432252A1
FR2432252A1 FR7912788A FR7912788A FR2432252A1 FR 2432252 A1 FR2432252 A1 FR 2432252A1 FR 7912788 A FR7912788 A FR 7912788A FR 7912788 A FR7912788 A FR 7912788A FR 2432252 A1 FR2432252 A1 FR 2432252A1
Authority
FR
France
Prior art keywords
write
inhibition circuit
synchronizer
signal
television
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.)
Granted
Application number
FR7912788A
Other languages
English (en)
Other versions
FR2432252B1 (fr
Inventor
Yutaka Ito
Yuzo Inoue
Takao Shimizu
Masao Inaba
Atsumi Sugimoto
Takeo Emori
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.)
Tokyo Broadcasting System Inc TBS
Original Assignee
Tokyo Broadcasting System Inc TBS
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 Tokyo Broadcasting System Inc TBS filed Critical Tokyo Broadcasting System Inc TBS
Publication of FR2432252A1 publication Critical patent/FR2432252A1/fr
Application granted granted Critical
Publication of FR2432252B1 publication Critical patent/FR2432252B1/fr
Granted 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
    • H04N5/06—Generation of synchronising signals
    • H04N5/067—Arrangements or circuits at the transmitter end
    • H04N5/073—Arrangements or circuits at the transmitter end for mutually locking plural sources of synchronising signals, e.g. studios or relay stations
    • H04N5/0736—Arrangements or circuits at the transmitter end for mutually locking plural sources of synchronising signals, e.g. studios or relay stations using digital storage buffer techniques

Abstract

Synchronisateur d'image comportant un circuit d'inhibition d'écriture. Dans le circuit d'inhibition d'écriture d'un synchronisateur d'image classique, la commutation d'entrée entre un premier signal de télévision et un second signal de télévision qui n'est pas synchrone avec le premier provoque à la sortie une perturbation du second signal par le premier. La présente invention prévoit un synchronisateur comportant un circuit d'inhibition d'écriture capable d'éviter une telle perturbation. Le circuit d'inhibition d'écriture fournit un signal de commande d'inhibition d'écriture du second signal d'entrée de télévision entre le moment de la commutation jusqu'au commencement d'une image complète du second signal d'entrée. Application aux téléviseurs.
FR7912788A 1978-05-19 1979-05-18 Synchronisateur d'image comportant un circuit d'unhibition d'ecriture Granted FR2432252A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53060228A JPS6053940B2 (ja) 1978-05-19 1978-05-19 フレ−ムシンクロナイザにおける書き込み禁止制御回路

Publications (2)

Publication Number Publication Date
FR2432252A1 true FR2432252A1 (fr) 1980-02-22
FR2432252B1 FR2432252B1 (fr) 1984-01-20

Family

ID=13136092

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912788A Granted FR2432252A1 (fr) 1978-05-19 1979-05-18 Synchronisateur d'image comportant un circuit d'unhibition d'ecriture

Country Status (6)

Country Link
US (1) US4231063A (fr)
JP (1) JPS6053940B2 (fr)
CA (1) CA1136762A (fr)
DE (1) DE2920332C2 (fr)
FR (1) FR2432252A1 (fr)
GB (1) GB2026278B (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349832A (en) * 1977-01-28 1982-09-14 Ampex Corporation Digital data rate corrector and time base corrector
JPS58213580A (ja) * 1982-06-04 1983-12-12 Nec Corp 静止画像伝送装置
JPS59185473A (ja) * 1983-04-06 1984-10-22 Tokyo Hoso:Kk テレビジヨン同期変換装置
GB2140239B (en) * 1983-05-18 1986-10-08 Sony Corp Television frame signal synchronizing circuits
GB2152321B (en) * 1983-11-14 1988-01-13 Transimage International Limit Improvements in or relating to selection of video sources
NL8401404A (nl) * 1984-05-03 1985-12-02 Philips Nv Televisiesignaalgeheugen-inschrijfschakeling.
US5233420A (en) * 1985-04-10 1993-08-03 The United States Of America As Represented By The Secretary Of The Navy Solid state time base corrector (TBC)
JPH0659092B2 (ja) * 1985-04-15 1994-08-03 ソニー株式会社 フレ−ムシンクロナイザ−
JPH0817008B2 (ja) * 1985-05-24 1996-02-21 日本放送協会 映像信号時間軸補正装置
EP0245745B1 (fr) * 1986-05-12 1993-10-27 Hitachi, Ltd. Système de traitement d'image
US4772938A (en) * 1986-10-03 1988-09-20 Eastman Kodak Company Color video signal frame store
JPH0213074A (ja) * 1988-06-29 1990-01-17 Toshiba Corp マルチチャンネル画像表示回路
DE3903922C2 (de) * 1989-02-10 1998-11-26 Philips Broadcast Television S Einrichtung zum Synchronisieren von Videosignalen
US5353063A (en) * 1990-04-04 1994-10-04 Canon Kabushiki Kaisha Method and apparatus for processing and/or displaying image data based on control data received with the image data
JP2984311B2 (ja) * 1990-04-04 1999-11-29 キヤノン株式会社 静止画像再生装置
JP3122112B2 (ja) * 1990-06-04 2001-01-09 ソニー株式会社 ビデオ信号切換装置
JPH04275784A (ja) * 1991-03-04 1992-10-01 Matsushita Electric Ind Co Ltd 映像信号切り換え装置
EP0523299A1 (fr) * 1991-07-18 1993-01-20 International Business Machines Corporation Système et méthode pour combiner des signaux vidéo composite multiples
AU3548095A (en) * 1994-08-31 1996-03-22 S3 Incorporated Apparatus for correction of video tearing
FR2731861B1 (fr) * 1995-03-13 1997-05-16 Thomson Broadcast Systems Procede et dispositif de synchronisation d'un signal video numerique
US6317166B1 (en) * 1998-08-31 2001-11-13 Immersive Media Company Synchronization frame generator for multichannel imaging system
FI115802B (fi) 2000-12-04 2005-07-15 Nokia Corp Kuvakehyksien päivittäminen muistillisessa näytössä
US6738056B2 (en) * 2001-07-25 2004-05-18 Brillian Corporation System and method for handling the input video stream for a display

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4018990A (en) * 1975-02-13 1977-04-19 Consolidated Video Systems, Inc. Digital video synchronizer
FR2345033A1 (fr) * 1976-03-19 1977-10-14 Rca Corp Synchroniseur de television

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320169B2 (fr) * 1972-04-24 1978-06-24
US4007486A (en) * 1974-10-05 1977-02-08 Nippon Electric Co., Ltd. Phase locking system for television signals using a digital memory technique
US4081826A (en) * 1975-05-15 1978-03-28 Sony Corporation Video time base corrector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4018990A (en) * 1975-02-13 1977-04-19 Consolidated Video Systems, Inc. Digital video synchronizer
FR2345033A1 (fr) * 1976-03-19 1977-10-14 Rca Corp Synchroniseur de television

Also Published As

Publication number Publication date
FR2432252B1 (fr) 1984-01-20
JPS54151321A (en) 1979-11-28
CA1136762A (fr) 1982-11-30
DE2920332A1 (de) 1979-11-22
US4231063A (en) 1980-10-28
JPS6053940B2 (ja) 1985-11-28
GB2026278A (en) 1980-01-30
GB2026278B (en) 1983-03-02
DE2920332C2 (de) 1982-05-13

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