Adaptive quantizer apparatus using training mode

Modulators – Amplitude modulator – Nonlinear device controlled by modulating signal

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

178 66R, 325 38B, H03K 1322

Patent

active

039315967

ABSTRACT:
Ideally, when a signal is quantized, the range of the quantizer should be matched to the power of the signal. Disclosed herein is adaptive quantizer apparatus which utilizes a particular quantizing scheme for those communications where the power of the signal to be quantized is unknown, but remains constant for the duration of a communication. The amplitude range of an adaptive quantizer is adjusted during an initial training period to a value appropriate to the power of the applied input signal. This is accomplished by successively altering the amplitude range by a multiplicative quantity that depends upon the amplitude of the quantizer output signal and upon the time elapsed since the onset of the training period.

REFERENCES:
patent: 3699566 (1972-10-01), Schindler
patent: 3806806 (1974-04-01), Brolin
patent: 3815033 (1974-06-01), Tewksbury
patent: 3857111 (1974-12-01), Deschenes et al.
Johnson et al., 37 Adaptive Rate Delta Modulator"--IBM Tech. Disclosure Bulletin, Vol. 15, No. 11, pp. 3338-3341, Apr., 1973.
Jones et al., "Adaptive Delta Modulator with Variable--Sample Rate", IBM Tech. Disclosure Bulletin, Vol. 15, No. 10, pp. 3168-3169, Mar., 1973.
Henry, "Logarithmic Digital Compandor for Delta Modulator"--IBM Tech. Disclosure Bulletin--Vol. 17, No. 3, pp. 909-910, Aug., 1974.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Adaptive quantizer apparatus using training mode does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive quantizer apparatus using training mode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive quantizer apparatus using training mode will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2352540

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.