Encoding circuit for a secam color television transmitter

Details Encoding circuit for a secam color television transmitter Encoding circuit for a secam color television transmitter

1980-06-09

1982-04-27

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

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H04N 940

Patent

active

043273726

ABSTRACT:
An encoding circuit for a SECAM color television transmitter having a frequency modulator circuit for a modulating signal which comprises two color difference signals which follow one another line-sequentially and are controlled by means of two phase control loops and two reference signal generators. A first reference signal generator has one of the reference frequencies whereas the frequency of the signal generated by the second reference signal generator is a harmonic of the line frequency. The phase control loop to which the second reference signal generator is connected comprises a sample and hold circuit which is operative at field frequency.

REFERENCES:
patent: 3716656 (1973-02-01), Lambert
patent: 3984863 (1976-10-01), Fessard
patent: 4081827 (1978-03-01), Hipwell

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