System and method for noise cancellation in a signal...

Details System and method for noise cancellation in a signal... System and method for noise cancellation in a signal...

2006-07-04

2006-07-04

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S131000, C341S155000

Reexamination Certificate

active

07071860

ABSTRACT:
A system and method for noise cancellation in a signal-processing circuit (e.g., an analog-to-digital converter circuit). Various aspects of the present invention may comprise inputting a first input signal and a digital input signal to the signal-processing circuit. The digital input signal may, for example, comprise a digital dither signal or other processor control signal. The signal-processing circuit may, for example, output a signal comprising a first signal component that is primarily a function of the first input signal and a second signal component that is primarily a function of the digital input signal. The second signal component may be estimated based on estimated behavior of the signal-processing circuit in response to the digital input signal. The estimated second signal component may, for example, be substantially removed from the signal-processing circuit output signal.

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patent: 5073777 (1991-12-01), Fukuhara et al.
patent: 5530442 (1996-06-01), Norsworthy et al.
patent: 6064328 (2000-05-01), Scheidig et al.

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