Self-adjusting bell filter circuit for use in SECAM coders

Details Self-adjusting bell filter circuit for use in SECAM coders Self-adjusting bell filter circuit for use in SECAM coders

1979-11-13

1981-03-10

Richardson, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 940

Patent

active

042557585

ABSTRACT:
A method and circuit for adjusting the frequency response of a bell filter in a SECAM camera samples the output signal from the filter. A frequency control voltage is applied to the filter in accordance with the sampled voltage.

REFERENCES:
patent: 3303274 (1967-01-01), DeFrance
patent: 3365541 (1968-01-01), Melchior
patent: 3471635 (1969-10-01), Melchior
patent: 3969762 (1976-07-01), Favreau

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