System and method for improving performance of an analog to...

Details System and method for improving performance of an analog to... System and method for improving performance of an analog to...

2006-07-11

2006-07-11

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Increasing converter resolution

C341S143000

Reexamination Certificate

active

07075466

ABSTRACT:
The present invention provides an ADC apparatus and method for improving effective bit resolution and suppressing digital reconstruction artifacts with an anti-aliasing filter and an over-sampled input. ADC resolution can be increased by combining a dither signal with a sampled signal and then after digitization, filtering out the dithered signal. Designing a notch in the filter corresponding to the attenuation frequency attenuates residual effects.

REFERENCES:
patent: 5525984 (1996-06-01), Bunker
patent: 5710729 (1998-01-01), Feste et al.
patent: 5940138 (1999-08-01), Lowe
patent: 6173003 (2001-01-01), Whikehart et al.
patent: 6795001 (2004-09-01), Roza
patent: 6804697 (2004-10-01), Bugeja et al.

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