Filter and phase shift circuit for a television automatic flesh

Details Filter and phase shift circuit for a television automatic flesh Filter and phase shift circuit for a television automatic flesh

1981-04-01

1983-05-24

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 9535

Patent

active

043853110

ABSTRACT:
A frequency selective signal translating circuit is disclosed for use in a color television receiver including an automatic flesh tone color correction network which provides a reference signal for color demodulators of the receiver. The circuit comprises an input bandpass filter for attenuating unwanted frequency components from the reference signal output of the correction network. The filter is followed by a phase shifter for shifting the phase of the filtered reference signal as required for proper demodulator operation. The filter comprises a fixed alignment, single-tuned, series resonant circuit coupled in series between the correction network output and the demodulator reference signal inputs.

REFERENCES:
patent: 3749825 (1973-07-01), Moore
patent: 3996608 (1976-12-01), Harwood
patent: 4020500 (1977-04-01), Harwood
patent: 4051519 (1977-09-01), Harwood
patent: 4084178 (1978-04-01), Srivastava et al.
patent: 4207590 (1980-06-01), Naimpally et al.

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