Television video signal A/D converter apparatus

Details Television video signal A/D converter apparatus Television video signal A/D converter apparatus

1985-05-13

1987-02-10

Groody, James J.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358169, 358160, 307358, H04N 574

Patent

active

046426930

ABSTRACT:
A television video signal A/D converter apparatus in a liquid crystal television receiver has an A/D converter for A/D converting a television video signal. Upper and lower reference potentials for determining an operating voltage amplitude are supplied to the A/D converter from a reference potential generator. The upper and lower reference potentials are divided at a given ratio by a resistor so as to fix an average potential of the television video signal at a constant value using the potential at the dividing point as a bias potential, and thereafter the television video signal is supplied to the A/D converter.

REFERENCES:
patent: 4064484 (1977-12-01), Mese et al.
patent: 4101839 (1978-07-01), Poole et al.
patent: 4395732 (1983-07-01), Upton
patent: 4403253 (1983-09-01), Morris et al.
patent: 4523232 (1985-06-01), Kameda et al.
patent: 4558348 (1985-12-01), Bolger et al.

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