Self-calibrating video digital to analog converter

Details Self-calibrating video digital to analog converter Self-calibrating video digital to analog converter

1998-05-01

2000-12-05

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341118, 341120, 341115, H03M 166, H03M 110

Patent

active

061573329

ABSTRACT:
A video DAC uses a charge pump to maintain a constant peak to peak amplitude within power supply variations over process and temperature, rather than an external reference signal or a band gap reference. The charge pump performs calibration at full scale output during horizontal sync levels or vertical sync pulses.

REFERENCES:
patent: 4677581 (1987-06-01), Malka et al.
patent: 4967197 (1990-10-01), Peng
patent: 5278558 (1994-01-01), Roth
patent: 5345186 (1994-09-01), Lesmeister
patent: 5703582 (1997-12-01), Koyama et al.
patent: 5870044 (1999-02-01), Dell'ova et al.
patent: 5982317 (1999-11-01), Steensgaard-Madsen

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