Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Patent
1995-01-31
1998-06-02
Williams, Howard L.
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
H03M 300
Patent
active
057607222
ABSTRACT:
A series of sigma-delta modulators are connected in a cascaded architecture. Each sigma-delta modulator has a noise transfer function that defines a unique set of quantization noise transmission zeros. A circuit is coupled to the cascaded architecture and has a signal transfer function that is an approximation of the noise transfer function of a first sigma-delta modulator in the series of sigma-delta modulators.
REFERENCES:
patent: 4792794 (1988-12-01), Heitmann
patent: 4862169 (1989-08-01), Van Bavel et al.
patent: 4876543 (1989-10-01), van Bavel
patent: 4920544 (1990-04-01), Endo et al.
patent: 5027120 (1991-06-01), Thurston
patent: 5030952 (1991-07-01), Ledzius et al.
patent: 5055846 (1991-10-01), Welland
patent: 5103229 (1992-04-01), Ribner
patent: 5148166 (1992-09-01), Ribner
patent: 5148167 (1992-09-01), Ribner
patent: 5162799 (1992-11-01), Tanimoto
patent: 5181032 (1993-01-01), Ribner
patent: 5208594 (1993-05-01), Yamazaki
Harris et al; New architectures with distributed zeros for improved noise aping of delta-sigma analog to digital converters; Conference Record of The Twenty-Seventh Asilomar Conference on Signals, Systems and Computers; Nov. 1-3,1993 (Cat. No.93CH3312-6) pp. 421-425 vol. 1; Dec. 1993 IEEE.
Matsuya et al., A 16-bit Oversampling A-to-D Conversion Technology Using Triple Intergation Noise Shaping, IEEE Journal of Solid-State Circuits, vol. SC-22, pp. 921-929, Dec. 1987.
Harris et al., On the Performance of Alternate Architectures for Noise Shaping Modulators of the Sigma Delta Type, Proceedings of International Symposium on Signal Processing and its Applications, ISSPA 92, Aug. 19-21, 1992, pp. 45-48.
Uchimura et al, "Oversampling A-to-D and D-to-A Converters with Multistage Noise Shaping Modulators", IEEE Transaction on Acoustics, Speech, and Signal Processing, vol. 36, No. 12, Dec. 1988, pp. 1899-1905.
Caulfield Robert W.
Harris Frederick J.
McKnight William H.
Fendelman Harvey
Kagan Michael A.
Lipovsky Peter A.
The United States of America as represented by the Secretary of
Williams Howard L.
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