FR2371111A1 - Modulateur secam - Google Patents

Modulateur secam

Info

Publication number
FR2371111A1
FR2371111A1 FR7734302A FR7734302A FR2371111A1 FR 2371111 A1 FR2371111 A1 FR 2371111A1 FR 7734302 A FR7734302 A FR 7734302A FR 7734302 A FR7734302 A FR 7734302A FR 2371111 A1 FR2371111 A1 FR 2371111A1
Authority
FR
France
Prior art keywords
secam
systems
modulator
transistors
provision
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
FR7734302A
Other languages
English (en)
Other versions
FR2371111B1 (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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of FR2371111A1 publication Critical patent/FR2371111A1/fr
Application granted granted Critical
Publication of FR2371111B1 publication Critical patent/FR2371111B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/85—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded brightness signal occupying a frequency band totally overlapping the frequency band of the recorded chrominance signal, e.g. frequency interleaving
    • 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

L'invention concerne un dispositif pour former un signal de télévision en couleurs du type SECAM à partir de signaux en corrélation comportant des premier et second signaux de différence de couleurs. Selon l'invention, on prévoit un oscillateur réglé 80, des premier et second transistors 21, 22 avec une source de courant constant; une impédance de charge 24, des moyens de commutation 305, 355, 405, 505, 555, et des moyens de commande de commutation G3, G4, G5, G6, G7. L'invention s'applique notamment avec les systèmes PAL avec des tourne-vidéodisques et avec des systèmes NTSC.
FR7734302A 1976-11-15 1977-11-15 Modulateur secam Granted FR2371111A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4754976 1976-11-15

Publications (2)

Publication Number Publication Date
FR2371111A1 true FR2371111A1 (fr) 1978-06-09
FR2371111B1 FR2371111B1 (fr) 1982-11-19

Family

ID=10445389

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7734302A Granted FR2371111A1 (fr) 1976-11-15 1977-11-15 Modulateur secam

Country Status (3)

Country Link
US (1) US4145711A (fr)
FR (1) FR2371111A1 (fr)
PL (1) PL112811B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2439524A1 (fr) * 1978-10-18 1980-05-16 Sonotec Dispositif de codage couleur pour affichage de donnees
US4327372A (en) * 1979-06-27 1982-04-27 U.S. Philips Corporation Encoding circuit for a secam color television transmitter
FR2547148A1 (fr) * 1983-06-01 1984-12-07 Cgv Comp Gen Videotech Systeme codeur couleur secam pour application grand public

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8201188A (nl) * 1982-03-23 1983-10-17 Philips Nv Kodeerschakeling voor een secam-kleurentelevisie-overdracht.
US4623914A (en) 1983-10-15 1986-11-18 Fuji Photo Film Co., Ltd. Discrimination circuit for a line sequential signal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2287142A1 (fr) * 1974-10-04 1976-04-30 Thomson Csf Codeur simplifie pour le systeme secam de television en couleurs

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2287142A1 (fr) * 1974-10-04 1976-04-30 Thomson Csf Codeur simplifie pour le systeme secam de television en couleurs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2439524A1 (fr) * 1978-10-18 1980-05-16 Sonotec Dispositif de codage couleur pour affichage de donnees
US4327372A (en) * 1979-06-27 1982-04-27 U.S. Philips Corporation Encoding circuit for a secam color television transmitter
FR2547148A1 (fr) * 1983-06-01 1984-12-07 Cgv Comp Gen Videotech Systeme codeur couleur secam pour application grand public
EP0128105A1 (fr) * 1983-06-01 1984-12-12 C G V Compagnie Générale de Vidéotechnique Système codeur couleur SECAM pour application grand public

Also Published As

Publication number Publication date
US4145711A (en) 1979-03-20
PL202142A1 (pl) 1978-09-11
PL112811B1 (en) 1980-11-29
FR2371111B1 (fr) 1982-11-19

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Legal Events

Date Code Title Description
ST Notification of lapse