Coded data generation or conversion – Analog to digital conversion followed by digital to analog...
Patent
1993-12-16
1995-05-30
Young, Brian K.
Coded data generation or conversion
Analog to digital conversion followed by digital to analog...
341144, 341155, H03M 102
Patent
active
054205840
ABSTRACT:
There is disclosed of the invention, a data converter for converting a signal from one form to another converts signals from analog-to-digital or from digital-to-analog form. The converter has an analog side and a digital sample side. A programmable barrel shift selector on the digital side receives digital signal samples of a first bit field width and selects a second bit field width as the output. The second bit field width is programmable over a range to selectively determine which bits in the first bit field are included in the second bit field.
REFERENCES:
patent: 5144308 (1992-09-01), Norsworthy
patent: 5313648 (1994-05-01), Ehlig et al.
An Audio Engineering Society Preprint Presented at the 95th Convention 1993, Oct. 7-10, New York, "A Single Chip Stereo Audio Codec for PC Multimedia Applications", by Scott McDonald, et al., Crystal Semiconductor Corporation, Austin, Tex., pp. 1-13.
Oversampling Delta-Sigma Data Converters, Theory, Design and Simulation, edited by James C. Candy and Gabor C. Temes, IEEE Press, A Selected Reprint Volume published in 1992, "Oversampling Methods for A/D and D/A Conversion", pp. 1-29.
Motorola DSP56166 "Digital Signal Processor" User's Manual, pp. 6-2-6-29.
"Digital Dither: Signal Processing with Resolution Far Below the Least Significant Bit", by Vanderkooy, et al., Audio Research Group, University of Waterloo, Waterloo, Ontario, Canada, pp. 87-96, AES 7th International Conference-Audio in Digital Times, Toronto, Canada May 14-17, 1989.
AT&T Corp.
Smith David L.
Young Brian K.
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