A/D conversion circuit and electronic instrument

Details A/D conversion circuit and electronic instrument A/D conversion circuit and electronic instrument

2008-12-24

2010-10-05

Nguyen, Linh V (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S118000, C341S120000, C341S155000, C341S172000

Reexamination Certificate

active

07808414

ABSTRACT:
An A/D conversion circuit includes a continuous-time filter that performs a filtering process on an input signal, an SCF that is provided in a subsequent stage of the continuous-time filter and performs a filtering process utilizing the continuous-time filter as a prefilter, a cut-off frequency of the SCF being variably set corresponding to a frequency band of the input signal, an A/D converter that is provided in a subsequent stage of the SCF and performs an A/D conversion operation utilizing the continuous-time filter and the SCF as prefilters, and a digital filter that is provided in a subsequent stage of the A/D converter and performs a digital filtering process utilizing the continuous-time filter and the SCF as prefilters, a cut-off frequency of the digital filter being variably set corresponding to the frequency band of the input signal.

REFERENCES:
patent: 5068660 (1991-11-01), Swanson et al.
patent: 5568142 (1996-10-01), Velazquez et al.
patent: 5704368 (1998-01-01), Asano et al.
patent: 6249237 (2001-06-01), Prater
patent: 6329939 (2001-12-01), Swaminathan et al.
patent: 6396428 (2002-05-01), Cheng
patent: 6693572 (2004-02-01), Oliaei et al.
patent: 6836228 (2004-12-01), Levinson et al.
patent: 7215269 (2007-05-01), Lee et al.
patent: 7352311 (2008-04-01), Miller et al.
patent: 7423573 (2008-09-01), Baginski et al.
patent: 7532137 (2009-05-01), Doerrer
patent: A-08-000585 (1996-01-01), None
patent: A-2007-117586 (2007-05-01), None
patent: A-2007-285745 (2007-11-01), None
U.S. Appl. No. 12/338,547, filed Dec. 18, 2008, in the name of Akihiro Fukuzawa et al.

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