Signal processing circuit

Facsimile and static presentation processing – Static presentation processing – Attribute control

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358 36, H04N 978

Patent

active

047347589

ABSTRACT:
A signal processing circuit for certainly detecting presence or absence of a change in the vertical direction of amplitude and phase of a chrominance signal by once converting the change in the vertical direction of amplitude and phase of the input chrominance signal into a change in the direction of amplitude by a converter, then comparing the converted output with a signal obtained by passing the converted output through one or a plurality of delay circuits by one or a plurality of comparing circuits in amplitude level, and then making an operation with the output of the comparing circuit by an operational circuit.

REFERENCES:
patent: 4178609 (1979-12-01), Beutel
patent: 4263612 (1981-04-01), Gibson et al.

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