Digital to analog converter with current supply for suppressing

Details Digital to analog converter with current supply for suppressing Digital to analog converter with current supply for suppressing

1997-04-22

2000-02-29

Tokar, Michael

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

H03M 166

Patent

active

060314761

ABSTRACT:
The present invention provides an 8-bit D/A converter comprising a first current supply for outputting a current representing input digital luminance signal data and a second current supply for outputting a predetermined current except during pulse periods of a synchronization signal Sync supplied along with the digital luminance signal data wherein the sum of the current generated by the first current supply in accordance with the digital luminance signal data and the predetermined current generated by the second current supply in accordance with the synchronization signal Sync is output.
Consequently an analog luminance signal from a D/A converter with a tone expression thereof improved by effectively utilizing the dynamic range of the D/A converter is obtained.

REFERENCES:
patent: 4516042 (1985-05-01), Nakamura
patent: 5486868 (1996-01-01), Shyu et al.
patent: 5608532 (1997-03-01), Park

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