FR2438396A1 - HORIZONTAL DEVIATION SYNCHRONIZATION CIRCUIT WITH DUAL PHASE ADJUSTMENT LOOP - Google Patents

HORIZONTAL DEVIATION SYNCHRONIZATION CIRCUIT WITH DUAL PHASE ADJUSTMENT LOOP

Info

Publication number
FR2438396A1
FR2438396A1 FR7924752A FR7924752A FR2438396A1 FR 2438396 A1 FR2438396 A1 FR 2438396A1 FR 7924752 A FR7924752 A FR 7924752A FR 7924752 A FR7924752 A FR 7924752A FR 2438396 A1 FR2438396 A1 FR 2438396A1
Authority
FR
France
Prior art keywords
phase adjustment
synchronism
phase
output
synchronization circuit
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
FR7924752A
Other languages
French (fr)
Other versions
FR2438396B1 (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
Application filed by RCA Corp filed Critical RCA Corp
Publication of FR2438396A1 publication Critical patent/FR2438396A1/en
Application granted granted Critical
Publication of FR2438396B1 publication Critical patent/FR2438396B1/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
    • H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
    • H04N5/126—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal indirectly commands a frequency generator

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Synchronizing For Television (AREA)
  • Details Of Television Scanning (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

L'INVENTION CONCERNE UN AGENCEMENT DE SYNCHRONISATION HORIZONTALE. SELON L'INVENTION, UNE BOUCLE VERROUILLEE EN PHASE 30 PRODUIT UN SIGNAL SENSIBLEMENT A DEUX NIVEAUX 257 EN SYNCHRONISME AVEC DES SIGNAUX MOYENS DE SYNCHRONISATION HORIZONTALE; UNE BOUCLE DE REGLAGE DE PHASE 70 MAINTIENT LES IMPULSIONS DE RETOUR EN SYNCHRONISME AVEC LE SIGNAL 257 ET ELLE COMPREND: UN DETECTEUR DE PHASE 92 AYANT UNE PREMIERE ENTREE RELIEE A LA SORTIE DE LA BOUCLE 30 ET UNE SECONDE ENTREE RELIEE AU CIRCUIT DE DEVIATION 140, UN FILTRANT 120 RELIE A UNE SORTIE M DU DETECTEUR 92 POUR FILTRER DES COURANTS A DES PREMIERE ET SECONDE POLARITES A SA SORTIE; ET UN MOYEN A PHASE REGLABLE 72 AYANT UNE ENTREE DE CONTROLE RELIEE AU FILTRE 120 POUR PRODUIRE LES IMPULSIONS D'ATTAQUE AFIN DE MAINTENIR LES IMPULSIONS DE RETOUR EN SYNCHRONISME AVEC LE SIGNAL A DEUX NIVEAUX. L'INVENTION S'APPLIQUE NOTAMMENT A LA SYNCHRONISATION DES TELEVISEURS.THE INVENTION RELATES TO A HORIZONTAL SYNCHRONIZATION ARRANGEMENT. ACCORDING TO THE INVENTION, A LOCKED LOOP IN PHASE 30 PRODUCES A SENSITIVE TWO-LEVEL 257 SIGNAL IN SYNCHRONISM WITH MEAN HORIZONTAL SYNCHRONIZATION SIGNALS; A 70 PHASE ADJUSTMENT LOOP KEEP THE FEEDBACK PULSES IN SYNCHRONISM WITH SIGNAL 257 AND INCLUDES: A PHASE 92 DETECTOR HAVING A FIRST INPUT CONNECTED TO THE OUTPUT OF LOOP 30 AND A SECOND INPUT CONNECTED TO BYPASS CIRCUIT 140, A FILTER 120 CONNECTED TO AN OUTPUT M OF THE DETECTOR 92 TO FILTER CURRENTS AT FIRST AND SECOND POLARITIES AT ITS OUTPUT; AND AN ADJUSTABLE PHASE MEDIUM 72 HAVING A CONTROL INPUT CONNECTED TO FILTER 120 TO GENERATE THE ATTACK PULSES TO KEEP THE RETURN PULSES IN SYNCHRONISM WITH THE TWO LEVEL SIGNAL. THE INVENTION APPLIES IN PARTICULAR TO THE SYNCHRONIZATION OF TELEVISIONS.

FR7924752A 1978-10-05 1979-10-04 HORIZONTAL DEVIATION SYNCHRONIZATION CIRCUIT WITH DUAL PHASE ADJUSTMENT LOOP Granted FR2438396A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US94877578A 1978-10-05 1978-10-05

Publications (2)

Publication Number Publication Date
FR2438396A1 true FR2438396A1 (en) 1980-04-30
FR2438396B1 FR2438396B1 (en) 1984-06-22

Family

ID=25488242

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7924752A Granted FR2438396A1 (en) 1978-10-05 1979-10-04 HORIZONTAL DEVIATION SYNCHRONIZATION CIRCUIT WITH DUAL PHASE ADJUSTMENT LOOP

Country Status (13)

Country Link
JP (1) JPS5854545B2 (en)
AT (1) AT382990B (en)
AU (1) AU522723B2 (en)
DE (1) DE2940461C2 (en)
ES (1) ES484745A1 (en)
FI (1) FI71049C (en)
FR (1) FR2438396A1 (en)
GB (1) GB2034137B (en)
IT (1) IT1123415B (en)
MY (1) MY8500721A (en)
NZ (1) NZ191751A (en)
PL (1) PL123959B1 (en)
SE (1) SE440436B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504763A1 (en) * 1981-04-27 1982-10-29 Thomson Csf TELEVISION SCANNING CONTROL CIRCUIT

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5752268A (en) * 1980-09-12 1982-03-27 Sanyo Electric Co Ltd Horizontal synchronizing circuit
US4317133A (en) * 1980-09-29 1982-02-23 Rca Corporation Two-loop horizontal AFPC system
JPS5752271A (en) * 1980-11-12 1982-03-27 Sanyo Electric Co Ltd Horizontal synchronizing circuit
US4396948A (en) * 1981-02-11 1983-08-02 Rca Corporation Dual mode horizontal deflection circuit
NL8103705A (en) * 1981-08-06 1983-03-01 Philips Nv LINE SYNCHRONIZER FOR AN IMAGE DISPLAY.
US4510527A (en) * 1983-03-28 1985-04-09 Rca Corporation Horizontal deflection phasing arrangement
US4639780A (en) * 1985-04-01 1987-01-27 Rca Corporation Television synchronizing apparatus
JPS6267426A (en) * 1985-09-20 1987-03-27 Agency Of Ind Science & Technol Ceramic tester
US4769705A (en) * 1987-06-30 1988-09-06 Rca Licensing Corporation Deflection synchronizing apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730989A (en) * 1971-12-13 1973-05-01 Gte Sylvania Inc Television horizontal transistor oscillator and afc network
US4047223A (en) * 1976-01-16 1977-09-06 Zenith Radio Corporation Frequency scanning automatic phase control system
FR2341225A1 (en) * 1976-02-16 1977-09-09 Hitachi Ltd PHASE LOCK LOOP CIRCUIT

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891800A (en) * 1971-03-16 1975-06-24 Philips Corp Line time base in a television receiver
NL7714033A (en) * 1977-12-19 1979-06-21 Philips Nv TELEVISION RECEIVER WITH A LINE SYNCHRONIZE CIRCUIT.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730989A (en) * 1971-12-13 1973-05-01 Gte Sylvania Inc Television horizontal transistor oscillator and afc network
US4047223A (en) * 1976-01-16 1977-09-06 Zenith Radio Corporation Frequency scanning automatic phase control system
FR2341225A1 (en) * 1976-02-16 1977-09-09 Hitachi Ltd PHASE LOCK LOOP CIRCUIT

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504763A1 (en) * 1981-04-27 1982-10-29 Thomson Csf TELEVISION SCANNING CONTROL CIRCUIT
EP0064898A1 (en) * 1981-04-27 1982-11-17 Thomson-Csf Circuit for controlling television scanning

Also Published As

Publication number Publication date
SE440436B (en) 1985-07-29
MY8500721A (en) 1985-12-31
NZ191751A (en) 1983-05-10
GB2034137A (en) 1980-05-29
FI71049B (en) 1986-07-18
DE2940461A1 (en) 1980-04-10
PL218729A1 (en) 1980-08-11
AU522723B2 (en) 1982-06-24
DE2940461C2 (en) 1982-05-19
JPS5550779A (en) 1980-04-12
ATA652779A (en) 1986-09-15
JPS5854545B2 (en) 1983-12-05
AU5129279A (en) 1980-04-17
FI71049C (en) 1986-10-27
AT382990B (en) 1987-05-11
FR2438396B1 (en) 1984-06-22
GB2034137B (en) 1982-10-27
SE7908091L (en) 1980-04-06
FI793025A (en) 1980-04-06
PL123959B1 (en) 1982-12-31
ES484745A1 (en) 1980-04-16
IT7926190A0 (en) 1979-10-02
IT1123415B (en) 1986-04-30

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