Adaptive sigma-delta modulation with improved dynamic range

Details Adaptive sigma-delta modulation with improved dynamic range Adaptive sigma-delta modulation with improved dynamic range

2006-07-04

2006-07-04

Decady, Albert (Department: 2138)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C341S143000, C341S155000, C714S799000

Reexamination Certificate

active

07073113

ABSTRACT:
An adaptive sigma-delta modulation and demodulation technique, wherein a quantizer step-size is adapted based on estimates of an input signal to the quantizer, rather than on estimates of an input signal to the modulator.

REFERENCES:
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patent: 6339621 (2002-01-01), Cojocaru et al.
patent: 06219530 (1994-09-01), None
M.A. Aldajani et al., “An Adaptive Structure for Sigma Delta Modulation with Improved Dynamic Range,” XP-002245293, Proc. 43rdIEEE, pp. 390-394.
J. Yu et al., “Adaptive quantisation for one-bit sigma-delta modulation,” IEE Proceedings-G 139(1), Feb. 1992.
C.V. Chakravarthy, “An amplitude-controlled adaptive delta sigma modulator,” The Radio and Electronic Engineer 49(1), 49-54, Jan. 1979.
C. Dunn et al., “Fixed and Adaptive Sigma-Delta Modulators with Multibit Quantisers,” Applied Sig Process 3:212-222, 1996.
M.P. Jaggi et al., “Instantaneously adaptive delta sigma modulator,” Can. Elec. Eng. J. 11(1) 1986.

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