Semiconductor integrated circuit

Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Unwanted signal suppression

Reexamination Certificate

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Details

C307S146000, C375S298000

Reexamination Certificate

active

07915952

ABSTRACT:
In a semiconductor integrated circuit, a switching circuit controls the capacity of a capacitor unit based on a control signal from a control circuit and separates a resonant frequency determined by first inductance, second inductance, and the capacity of the capacitor unit from the band area of the signal handled by an A/D converter.

REFERENCES:
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patent: 6118309 (2000-09-01), Akamatsu et al.
patent: 6191632 (2001-02-01), Iwata et al.
patent: 7245153 (2007-07-01), Murakami et al.
patent: 7330420 (2008-02-01), Kimura et al.
patent: 2008/0122380 (2008-05-01), Matsui et al.
patent: 2682397 (1997-08-01), None
patent: 11-103248 (1999-04-01), None
patent: 3705842 (2005-08-01), None
patent: 2001-31135 (2001-04-01), None
patent: 10-2004-0010334 (2004-01-01), None
patent: WO-99/24852 (1999-05-01), None
Korean Office Action, Jun. 22, 2009.

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