Pulse or digital communications – Pulse code modulation – Differential
Patent
1992-10-13
1995-10-10
Chin, Stephen
Pulse or digital communications
Pulse code modulation
Differential
375248, 375254, 341143, H04B 1406
Patent
active
054577144
ABSTRACT:
A delta modulator automatically adjusting the slewing rate is disclosed. In the absence of a transition in the output data of a delta modulator, a parameter used for the integrator of the delta modulator is increased. When the comparator of the modulator indicates that the feedback signal of the modulator has overshot the input signal, the parameter is decreased or reversed until the two signals are approximately equal as signalled by a 50% duty cycle.
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Bethel Michael D.
Engel Melvyn
Smith Michael J.
Sowell Michael A.
Chin Stephen
WavePhore, Inc.
Webster Bryan
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