FR2454239A1 - Circuit generateur de signal video en couleur pour systeme de television du type secam - Google Patents

Circuit generateur de signal video en couleur pour systeme de television du type secam

Info

Publication number
FR2454239A1
FR2454239A1 FR8008040A FR8008040A FR2454239A1 FR 2454239 A1 FR2454239 A1 FR 2454239A1 FR 8008040 A FR8008040 A FR 8008040A FR 8008040 A FR8008040 A FR 8008040A FR 2454239 A1 FR2454239 A1 FR 2454239A1
Authority
FR
France
Prior art keywords
signal
colour
modulator
frequency
phase
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
FR8008040A
Other languages
English (en)
Other versions
FR2454239B1 (fr
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan Ltd
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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Publication of FR2454239A1 publication Critical patent/FR2454239A1/fr
Application granted granted Critical
Publication of FR2454239B1 publication Critical patent/FR2454239B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/18—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous and sequential signals, e.g. SECAM-system
    • H04N11/183—Encoding means therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Television Systems (AREA)

Abstract

GENERATEUR DE SIGNAUX VIDEO POUR SYSTEME DE TELEVISION SECAM, COMPRENANT UN MODULATEUR DE FREQUENCE 4 QUI MODULE DEUX SOUS-PORTEUSES DE COULEUR AVEC DES SIGNAUX DE DIFFERENCE DE COULEUR POUR CHAQUE PERIODE ALTERNEE DE BALAYAGE HORIZONTAL, LA SORTIE MODULEE ETANT APPLIQUEE A UN COMPARATEUR DE PHASE AYANT UNE PREMIERE ENTREE RELIEE A LA SORTIE DU MODULATEUR ET UNE SECONDE ENTREE QUI RECOIT UN SIGNAL DE REFERENCE, DANS LEQUEL LA SORTIE DU COMPARATEUR EST COUPLEE A UN ECHANTILLONNEUR-BLOQUEUR QUI DOIT ETRE ECHANTILLONNE AU COURS D'UNE PERIODE D'ECHANTILLONNAGE T AU DEBUT DE CHAQUE PERIODE DE BALAYAGE HORIZONTAL ALTERNE ET DES MOYENS SONT PREVUS POUR ENGENDRER UNE IMPULSION AYANT UNE PERIODE T PLUS FAIBLE QUE LA PERIODE T, AU DEBUT DE CHAQUE PERIODE DE BALAYAGE, POUR ETABLIR L'ALIGNEMENT DE PHASE ENTRE LA SORTIE DU MODULATEUR ET LEDIT SIGNAL DE REFERENCE ET LE SIGNAL DE DIFFERENCE DE PHASE ECHANTILLONNE EMANANT DE L'ECHANTILLONNEUR-BLOQUEUR EST APPLIQUE AU MODULATEUR POUR COMMANDER SA PHASE DE SORTIE AU COURS DE L'INTERVALLE DE TEMPS QUI SUIT LA PERIODE T, CARACTERISE PAR UN CIRCUIT DE PORTE 16 RELIE A LA SORTIE DU GENERATEUR 15 POUR TRANSMETTRE LE SIGNAL DE REFERENCE AU MODULATEUR 4 AU COURS DE LA PERIODE T, AFIN DE VERROUILLER LE SIGNAL DE SORTIE DU MODULATEUR SUR LA PHASE DU SIGNAL DE REFERENCE.
FR8008040A 1979-04-10 1980-04-10 Circuit generateur de signal video en couleur pour systeme de television du type secam Granted FR2454239A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4251779A JPS5932953B2 (ja) 1979-04-10 1979-04-10 Ｓｅｃａｍ方式カラ−映像信号発生装置

Publications (2)

Publication Number Publication Date
FR2454239A1 true FR2454239A1 (fr) 1980-11-07
FR2454239B1 FR2454239B1 (fr) 1984-12-14

Family

ID=12638261

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8008040A Granted FR2454239A1 (fr) 1979-04-10 1980-04-10 Circuit generateur de signal video en couleur pour systeme de television du type secam

Country Status (2)

Country Link
JP (1) JPS5932953B2 (fr)
FR (1) FR2454239A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8402934A (nl) * 1983-09-26 1985-04-16 Sony Corp Stelsel voor analoog/digitaal-omzetting van naar keuze een analoog kleurenvideosignaal in samengestelde vorm of een dergelijk signaal in de vorm van samenstellende componenten.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1381500A (fr) * 1963-10-29 1964-12-14 Cft Comp Fse Television Perfectionnements aux dispositifs d'asservissement de phase
FR2263652A1 (en) * 1974-03-09 1975-10-03 Bosch Gmbh Robert SECAM coder for sequential colour-diff. signals - has FM signal and phase-alternating ref. forming correction signal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1381500A (fr) * 1963-10-29 1964-12-14 Cft Comp Fse Television Perfectionnements aux dispositifs d'asservissement de phase
FR2263652A1 (en) * 1974-03-09 1975-10-03 Bosch Gmbh Robert SECAM coder for sequential colour-diff. signals - has FM signal and phase-alternating ref. forming correction signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8402934A (nl) * 1983-09-26 1985-04-16 Sony Corp Stelsel voor analoog/digitaal-omzetting van naar keuze een analoog kleurenvideosignaal in samengestelde vorm of een dergelijk signaal in de vorm van samenstellende componenten.

Also Published As

Publication number Publication date
JPS5932953B2 (ja) 1984-08-11
FR2454239B1 (fr) 1984-12-14
JPS55135490A (en) 1980-10-22

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Legal Events

Date Code Title Description
ST Notification of lapse