Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Reexamination Certificate
2008-01-22
2008-01-22
Nguyen, Khai M. (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
C341S139000, C341S155000, C375S316000
Reexamination Certificate
active
11270908
ABSTRACT:
In one embodiment, the present invention includes a delta-sigma modulator formed of a loop filter coupled to receive an incoming signal, and a quantizer coupled to the loop filter to receive an output of the loop filter and to generate a quantized output. The loop filter may have multiple integration stages and a transfer function constrained to maintain stability of the delta-sigma modulator regardless of an amplitude of the incoming signal. Methods directed to design of such a delta-sigma modulator are also described.
REFERENCES:
patent: 5012244 (1991-04-01), Wellard et al.
patent: 5055846 (1991-10-01), Welland
patent: 5243345 (1993-09-01), Naus et al.
patent: 5248972 (1993-09-01), Karema et al.
patent: 5719573 (1998-02-01), Leung et al.
patent: 5736950 (1998-04-01), Harris et al.
patent: 5742246 (1998-04-01), Kuo et al.
patent: 6005506 (1999-12-01), Bazarjani et al.
patent: 6061009 (2000-05-01), Krone et al.
patent: 6516185 (2003-02-01), MacNally
patent: 6590943 (2003-07-01), Ali
patent: 6646581 (2003-11-01), Huang
patent: 6654594 (2003-11-01), Hughes et al.
patent: 6888484 (2005-05-01), Kiss et al.
patent: 7151917 (2006-12-01), Paulus
patent: 2003/0174641 (2003-09-01), Rahman
“A Third-Order Sigma-Delta Modulator for Dual-Mode Receivers” Rusu, A. and Tenhunen, H. Proceedings of the 46th IEEE International Midwest Symposium on Circuits and Systems, 2003. (MWSCAS'03). vol. 1, pp. 68-71. Published Dec. 27-30, 2003.
PCT/US2006/025308 International Search Report with Written Opinion of the International Searching Authority, mailed Nov. 7, 2006.
W. Redman-White, et al., “Integrated Fourth-Order Convertor with Stable Self-Tuning Continuous-Time Noise Shaper,” Jun. 1, 1994, pp. 145-150.
Nguyen Khai M.
Silicon Laboratories Inc.
Trop Pruner & Hu P.C.
LandOfFree
Unconditionally stable analog-to-digital converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Unconditionally stable analog-to-digital converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unconditionally stable analog-to-digital converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3956074