Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Reexamination Certificate
2008-11-18
2010-11-16
Nguyen, Linh V (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
C341S122000, C341S143000, C341S155000
Reexamination Certificate
active
07834797
ABSTRACT:
A switched capacitor circuit includes a capacitor that performs sampling, a first switch that is provided between the capacitor and an input terminal, and a second switch that is provided between the capacitor and an output terminal. The first switch and the second switch receive an input of a clock signal and turn on and off. The capacitor is a variable capacitance element in which the value of the capacitance changes in synchronization with the clock signal.
REFERENCES:
patent: 5189637 (1993-02-01), Eriksson
patent: 5235335 (1993-08-01), Hester et al.
patent: 5459464 (1995-10-01), Beneteau et al.
patent: 5617093 (1997-04-01), Klein
patent: 6025794 (2000-02-01), Kusumoto et al.
patent: 6275178 (2001-08-01), Koifman et al.
patent: 6819281 (2004-11-01), Fujita et al.
patent: 6970126 (2005-11-01), O'Dowd et al.
patent: 7295143 (2007-11-01), Ambo et al.
patent: 7439892 (2008-10-01), Schneider et al.
patent: 7679422 (2010-03-01), Thiagarajan et al.
patent: 2003/0146862 (2003-08-01), Gandolfi et al.
patent: 2007/0008208 (2007-01-01), Lakdawala et al.
J. Oliveira et al., “Low-Power CMOS Comparator with Embedded Amplification for Ultra-high-speed ADCs,” Circuits and Systems, 2007, ISCAS 2007, IEEE International Symposium O N, IEEE, PI, pp. 3602-3605 (May 1, 2007).
F. Chen et al., “A 0.25-mW Low-Pass Passive Sigma-Delta Modulator with Built-In Mixer for a 10-MHz IF Input,” IEEE Journal of Solid-State Circuits, vol. 32, No. 6, pp. 774-782 (Jun. 1, 1997).
European Search Report in EP 08 25 3601 (May 20, 2009).
F. Chen, et al., “A 1.5V 1mA 80dB Passive ΣΔADC in 0.13μm Digital CMOS Process”, IEEE International Solid-State Circuits Conference, Digest of Technical Papers, pp. 54-55 (2003).
F. Chen, et al., “A 0.25mW 13b Passive ΣΔ Modulator for a 10MHz IF Input”, IEEE International Solid-State Circuits Conference, Digest of Technical Papers, pp. 58-59 (1996).
Iida Sachio
Yoshizawa Atsushi
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Nguyen Linh V
Sony Corporation
LandOfFree
Switched capacitor circuit, switched capacitor filter, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Switched capacitor circuit, switched capacitor filter, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switched capacitor circuit, switched capacitor filter, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4245686