Coded data generation or conversion – Analog to or from digital conversion – Nonlinear
Reexamination Certificate
2006-11-20
2008-08-05
Jeanglaude, Jean B (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Nonlinear
C341S143000, C341S155000
Reexamination Certificate
active
07408492
ABSTRACT:
Circuitry for providing non-uniform analog-to-digital (“A/D”) signal conversion for wideband signals is provided. The circuitry of the invention is optimized for wideband signals because it does not sacrifice the small-scale resolution of high-probability signal amplitudes while preventing the clipping of low-probability signal amplitudes. The circuitry includes a nonlinear amplifier and an A/D converter that may be uniform or non-uniform. The digital output of the A/D converter may be further processed by circuitry that has an output function that is the inverse of that of the nonlinear amplifier, so as to maintain linear A/D conversion.
REFERENCES:
patent: 4772871 (1988-09-01), Suzuki et al.
patent: 5198816 (1993-03-01), Kalinowski et al.
patent: 6043659 (2000-03-01), McKinnon
patent: 6252531 (2001-06-01), Gordon et al.
patent: 6445319 (2002-09-01), Bugeja
patent: 6498577 (2002-12-01), Lin
patent: 2005/0026564 (2005-02-01), Haub et al.
D. Weiler et al., “Single Bit Sigma-Delta Modulator with Nonlinear Quantization for μ-Law Coding,” Fraunhofer Institute of Microelectronic Circuits and Systems Finkstrabe 61, D-47057 Duisburg, Germany, no date.
Feng Xiang Guang
He Runsheng
Jeanglaude Jean B
Marvell International Ltd.
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