Coded data generation or conversion – Digital code to digital code converters – Data rate conversion
Patent
1991-06-26
1993-03-02
DeBoer, Todd E.
Coded data generation or conversion
Digital code to digital code converters
Data rate conversion
341 50, H03M 700
Patent
active
051913348
ABSTRACT:
A sampling frequency conversion apparatus having N (where N is an integer, which is two or more) sampling conversion means serially connected, each of the N sampling frequency conversion means comprising a first digital filter for outputting a signal with longer bit length than that of an input signal, and first sampling means for sampling a signal which is output from the digital filter at a sampling frequency, the sampling frequency decreasing as the stage of the sampling frequency conversion means becomes later. Thus, the earlier stages which should be operated at a high speed, the bit length of signals becomes short. In the later stages where the bit length becomes long, the sampling frequencies are decreased. Consequently, the apparatus can be operated at a high speed and constructed at a low cost.
REFERENCES:
patent: 4035724 (1977-07-01), Stephenne et al.
patent: 4870661 (1989-09-01), Yamada et al.
patent: 4903019 (1990-02-01), Ito
"Monolithic Decimation Filtering for Custom Delta-Sigma A/D Converters", Int'l Conf. on Acoustics, Speech, and Signal Processing, Apr. 11-14, 1988, vol. IV, Max W. Hauser et al, pp. 2005-2008.
"A Fast Algorithm for the Design of Narrow-Band Multirate Digital Filters", Int'l Conf. on Acoustics, Speech, and Signal Processing, Apr. 6-9, 1987, vol. 4 of 4, Eric Viscito et al, pp. 2177-2180.
"Multiplier-Free Decimator Algorithms for Superresolution Oversampled Converters", Int'l Symposium on Circuits and Systems, May 1-3, 1990, vol. 4 of 4, Tapio Saramaki et al, pp. 3275-3278.
"A 16-bit Oversampling A-to-D Conversion Technology Using Triple-Integration Noise Shaping", IEEE Journal of Solid-State Circuits, vol. SC-22, No. 6, Dec. 1987, Yasuyuki Matsuya et al, pp. 921-929.
Deboer Todd E.
Kabushiki Kaisha Toshiba
Young Brian
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