Delta-modulation encoder

Details Delta-modulation encoder Delta-modulation encoder

1976-05-26

1978-08-22

Griffin, Robert L.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

332 11D, H03K 1322

Patent

active

041092031

ABSTRACT:
In a delta-modulation encoding arrangement having step-size control drift voltages and miss-match between the charge and discharge pulses for the first integrating network in the feedback circuit produce an additional DC voltage on this integrating network. This additional DC voltage is compensated by an additional feedback circuit comprising a second integrating network. However, if the signal to be encoded rapidly decreases from a large to a small amplitude and when after this rapid decrease the information signal only has a small amplitude an additional distortion is introduced for these small signals. To obviate this a modulation arrangement is included in the extra feedback circuit, which modulation arrangement is controlled by a control signal which derives a control signal from the delta modulation output pulses. The energy contents of the delta modulation pulses which are applied through the modulation arrangement to the second integrating network is varied in such a way that this energy contents decreases when the step-size increases and vice versa.

REFERENCES:
patent: 3746990 (1973-07-01), Diberder
patent: 3806806 (1974-04-01), Brolin
patent: 3899754 (1975-08-01), Brolin

Affiliated with

Also associated with

Rating

Delta-modulation encoder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Delta-modulation encoder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Delta-modulation encoder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1561353