PAL color television signal generator for control of time base c

Details PAL color television signal generator for control of time base c PAL color television signal generator for control of time base c

1977-11-01

1979-12-11

Konick, Bernard

Facsimile and static presentation processing

Static presentation processing

Attribute control

360 36, 358 35, H04N 5795

Patent

active

041786076

ABSTRACT:
A signal generator includes a delay circuit for delaying a pulse signal synchronized with the horizontal synchronizing signal in video signals according to a PAL color television system, and a counter for counting the pulse signal and controlling the delay time of the delay circuit with its counting output. The frequency of the chrominance subcarrier according to the PAL color television system is not an integral multiple of the frequency of the pulse signal. An output signal synchronized substantially with the chrominance subcarrier or a signal having the frequency which is an integral multiple of the frequency of the chrominance subcarrier, is obtained from the delay circuit. The output signal is used for a reset signal to a counter in a writing portion into a memory of a time base corrector to control the time base of the video signals according to the PAL color television system.

REFERENCES:
patent: 3932888 (1976-01-01), Lemke et al.
patent: 4018990 (1977-04-01), Longet et al.
patent: 4074307 (1978-02-01), Dischert et al.

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