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1. WO1982001108 - HORIZONTAL SYNCHRONIZING CIRCUIT

Publication Number WO/1982/001108
Publication Date 01.04.1982
International Application No. PCT/JP1981/000231
International Filing Date 11.09.1981
IPC
H04N 5/06 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
04Synchronising
06Generation of synchronising signals
H04N 5/12 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
04Synchronising
12Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
CPC
H04N 5/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
04Synchronising
06Generation of synchronising signals
H04N 5/126
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
04Synchronising
12Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
126whereby the synchronisation signal indirectly commands a frequency generator
Applicants
  • SANYO ELECTRIC CO., LTD. (AllExceptUS)
  • HOSOYA, Nobukazu (UsOnly)
Inventors
  • HOSOYA, Nobukazu
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) HORIZONTAL SYNCHRONIZING CIRCUIT
(FR) CIRCUIT DE SYNCHRONISATION HORIZONTALE
Abstract
(EN)
A horizontal synchronizing circuit for a television receiver. A horizontal AFC circuit divides the output of a voltage controlled oscillator generating a higher frequency than the horizontal frequency, compares the phases of the divided frequency with the phase of the horizontal synchronizing signal, and controls the oscillation frequency of the oscillator in response to the compared output. A horizontal APC circuit compares the phases of the divided output and a horizontal flyback pulse, controls the phase of the divided output in response to the compared output and drives the horizontal deflecting circuit with the phase controlled divided output. Thus, various pulses for control and gate operations can be formed by combining the various outputs having different frequencies from the frequency divider.
(FR)
Un circuit de synchronisation horizontale est destine a un recepteur de television. Un circuit AFC horizontal divise la sortie d'un oscillateur commande par la tension produisant une frequence plus elevee que la frequence horizontale, compare les phases de la frequence divisee avec la phase du signal de synchronisation horizontale, et commande la frequence d'oscillation de l'oscillateur en reponse a la sortie comparee. Un circuit APC horizontal compare les phases de la sortie divisee et une impulsion de retour horizontal, commande la phase de la sortie divisee en reponse a la sortie comparee et met en action le circuit de deflexion horizontale avec la sortie divisee commandee par la phase. Ainsi, plusieurs impulsions pour des operations de commande et de porte peuvent etre formees en combinant les diverses sorties ayant des frequences differentes provenant du diviseur de frequence.
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