Digital television signal processing circuit

Details Digital television signal processing circuit Digital television signal processing circuit

1985-02-27

1987-02-17

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

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358 31, H04N 978

Patent

active

046443894

ABSTRACT:
An analog video signal of a PAL system is converted into a digital video signal by an A/D converter. The digital video signal is supplied to a delay device so as to be subjected to hue correction and Y/C separation. The delay device generates a plurality of digital video signals with different delay times. The digital video signals S1(t) and S2(t) obtained from the delay device are supplied to a first subtracter, and the digital video signals S3(t) and S4(t) are supplied to a second subtracter. The outputs from the first and second subtracters are supplied to a third subtracter, and the output from the third subtracter is multiplied with a coefficient, thereby obtaining a first chrominance signal U(t). The outputs from the first and second subtracters are supplied to a first adder, and the output from the first adder is multiplied with a coefficient, thereby obtaining a second chrominance signal V(t).

REFERENCES:
patent: 4343017 (1982-08-01), Wilkinson
patent: 4466016 (1984-08-01), Pritchard
patent: 4470069 (1984-09-01), Lewis
patent: 4500912 (1985-02-01), Bolger
patent: 4524423 (1985-06-01), Acampora

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