Video signal processing devices

Details Video signal processing devices Video signal processing devices

1986-04-25

1988-12-20

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358148, H04N 508

Patent

active

047928530

ABSTRACT:
A video signal processing device for separating horizontal and vertical synchronizing signal components from an applied video signal, for forming a field discrimination signal upon discriminating the field represented by each field video signal on the basis of the separated horizontal and vertical synchronizing signal components, and for detecting abnormality or deviation from a predetermined variation in the field discrimination signal due to a defect of the synchronizing signal components or a different type or format of a video signal.

REFERENCES:
patent: 3906155 (1975-09-01), Van Straaten
patent: 4608602 (1986-08-01), Grantham-Hill

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