Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Reexamination Certificate
2006-11-07
2006-11-07
Barnie, Rexford (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
C341S155000, C341S159000
Reexamination Certificate
active
07132972
ABSTRACT:
A method of digitally processing an analog signal in continuous time includes producing a continuous-time digital signal from an analog signal via a technique that does not include periodic sampling, then producing one or more delayed versions of the continuous-time digital signal. Each delayed version is delayed by nT, where n is an integer greater than zero, and T is a delay interval. The method further includes multiplying the continuous-time digital signal and each of the delayed versions by one or more associated coefficients, so as to produce a set of products, then adding the set of products, so as to produce a sum value corresponding to the analog signal processed by a transfer function defined by the associated coefficients. The individual bit paths of the continuous-time digital signal are multiplied by the coefficients, and the resulting products are combined by a binary-weighted adder.
REFERENCES:
patent: 4211999 (1980-07-01), Clark et al.
patent: 4276543 (1981-06-01), Miller et al.
patent: 4644322 (1987-02-01), Fujita
patent: 4897657 (1990-01-01), Brubaker
patent: 4918451 (1990-04-01), Ando et al.
patent: 4963874 (1990-10-01), Matsuzawa et al.
patent: 4978957 (1990-12-01), Hotta et al.
patent: 5014057 (1991-05-01), Mintzer
patent: 5119098 (1992-06-01), Komatsu et al.
patent: 6005664 (1999-12-01), Korenberg et al.
patent: 6188347 (2001-02-01), Knudsen
Bilinskis, I.,et al., “Nonuniform Sampling Based Signal Generation,” International Laboratory for DASP, University of Westminster, London, England (4 pages).
Aldroubi et al., “Nonuniform Sampling and Reconstruction in Shift-Invariant Spaces,” SIAM Review, 2001, vol. 43(4), pp. 585-620, No month.
Allier et al., “A New Class of Asynchronous A/D Converters Based on Time Quantization,” Proceedings, Ninth IEEE International Symposium on Asynchronous Circuits and Systems, May 2003, Vancouver, pp. 196-205.
Bilinskis et al., “Randomized Signal Processing,” 1992, Prentice-Hall, New York, No month.
Inose et al., “Asynchronous Delta-Modulation System,” Electronics Letters, 1996, vol. 2(3), pp. 95-96, No month.
Sayiner et al., “A Level-Crossing Sampling Scheme for A/D Conversion,” IEEE Trans. on Circuits and Systems-II: Analog and Digital Signal Processing, 1996, vol. 43(4), pp. 335-339, No month.
Tsividis, Y., “Signal Processors with Transfer Function Coefficients Determined by Timing,” IEEE Trans. on Circuits and Systems, 1982, vol. CAS-29(12), pp. 807-817, No month.
Tsividis, Y., “Nonuniform Pulse Code Modulation Encoding Using Integrated Circuit Techniques,” Thesis for Ph.D. in Engineering at University of California, Berkeley 1976, No month.
The Trustees of Columbia University in the City of New York
Wilmer Cutler Pickering Hale and Dorr LLP
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