FR2453569A1 - METHOD AND CIRCUIT FOR AUTOMATIC ADJUSTMENT OF THE DEVIATION LIMIT FOR SECAM ENCODERS - Google Patents

METHOD AND CIRCUIT FOR AUTOMATIC ADJUSTMENT OF THE DEVIATION LIMIT FOR SECAM ENCODERS

Info

Publication number
FR2453569A1
FR2453569A1 FR8007749A FR8007749A FR2453569A1 FR 2453569 A1 FR2453569 A1 FR 2453569A1 FR 8007749 A FR8007749 A FR 8007749A FR 8007749 A FR8007749 A FR 8007749A FR 2453569 A1 FR2453569 A1 FR 2453569A1
Authority
FR
France
Prior art keywords
secam
circuit
signal
automatic adjustment
deviation limit
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
FR8007749A
Other languages
French (fr)
Other versions
FR2453569B1 (en
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
Priority claimed from US06/093,222 external-priority patent/US4263609A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of FR2453569A1 publication Critical patent/FR2453569A1/en
Application granted granted Critical
Publication of FR2453569B1 publication Critical patent/FR2453569B1/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

La présente invention concerne un dispositif de réglage automatique de la limite de déviation d'un signal SECAM. Selon l'invention, un circuit 38, 58 compare la fréquence de sous-porteuse déviée des impulsions d'identification verticale, présentés dans un signal SECAM, à la fréquence d'un signal de référence, pour produire un signal de réglage de limite selon la différence de fréquence entre les impulsions d'identification et le signal de référence, et un circuit limiteur de déviation 44 comporte une entrée recevant ce signal de réglage. L'invention s'applique notamment aux téleviseurs en couleur SECAM.The present invention relates to a device for automatically adjusting the deviation limit of a SECAM signal. According to the invention, a circuit 38, 58 compares the deflected subcarrier frequency of the vertical identification pulses, presented in a SECAM signal, with the frequency of a reference signal, to produce a limit adjustment signal according to the invention. the frequency difference between the identification pulses and the reference signal, and a deviation limiter circuit 44 has an input receiving this adjustment signal. The invention applies in particular to SECAM color television sets.

FR8007749A 1979-04-05 1980-04-04 METHOD AND CIRCUIT FOR AUTOMATIC ADJUSTMENT OF THE DEVIATION LIMIT FOR SECAM ENCODERS Granted FR2453569A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7912023 1979-04-05
US06/093,222 US4263609A (en) 1979-04-05 1979-11-13 Automatic deviation limit control circuit for secam encoders

Publications (2)

Publication Number Publication Date
FR2453569A1 true FR2453569A1 (en) 1980-10-31
FR2453569B1 FR2453569B1 (en) 1983-03-25

Family

ID=26271137

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8007749A Granted FR2453569A1 (en) 1979-04-05 1980-04-04 METHOD AND CIRCUIT FOR AUTOMATIC ADJUSTMENT OF THE DEVIATION LIMIT FOR SECAM ENCODERS

Country Status (3)

Country Link
DE (1) DE3013166C2 (en)
FR (1) FR2453569A1 (en)
GB (1) GB2048610B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567703A1 (en) * 1984-04-09 1986-01-17 Philips Nv METHOD FOR GENERATING A MODULATING SIGNAL IN A SECAM CODING CIRCUIT AND CIRCUIT FOR IMPLEMENTING THE METHOD

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3815680A1 (en) * 1988-05-07 1989-11-16 Bosch Gmbh Robert Frequency modulator for periodic signals

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2283611A1 (en) * 1974-08-30 1976-03-26 Thomson Csf DEVICE FOR CONTROLLING THE REST FREQUENCY OF A COLOR TELEVISION SUB-CARRIER AND CORRESPONDING ENCODERS FOR THE SECAM SYSTEM
DE2458198A1 (en) * 1974-12-09 1976-06-10 Bosch Gmbh Robert SYSTEM FOR COUPLING THE FREQUENCY MODULATED COLOR CARRIERS IN THE SECAM COLOR TELEVISION PROCESS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/67 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567703A1 (en) * 1984-04-09 1986-01-17 Philips Nv METHOD FOR GENERATING A MODULATING SIGNAL IN A SECAM CODING CIRCUIT AND CIRCUIT FOR IMPLEMENTING THE METHOD

Also Published As

Publication number Publication date
FR2453569B1 (en) 1983-03-25
GB2048610A (en) 1980-12-10
DE3013166C2 (en) 1982-12-30
DE3013166A1 (en) 1980-10-23
GB2048610B (en) 1983-04-27

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse