Temperature and process variation compensation for a delta demod

Details Temperature and process variation compensation for a delta demod Temperature and process variation compensation for a delta demod

1985-05-15

1987-08-04

Laroche, Eugene R.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329109, 329110, 375 28, 375 34, H03K 900

Patent

active

046848983

ABSTRACT:
A circuit for processing the control signal inputs for a control data signal decoder wherein a reference voltage and a reference current are generated for use in processing a stream of control signal bits. The control signal data stream is filtered, buffered and exponentialed. The processing serves to cancel out variations in temperature, resistance, process variations and circuit voltages to yield a stable control signal current.

REFERENCES:
"An Audio Broadcast System Using Delta Modulation", Kenneth Gundry, Dolby Laboratories, Inc.
"A Digital Audio System for Broadcast and Prerecorded Media", Todd et al., Dolby Laboratories, Inc., 75th AES Convention, Mar. 27-30, 1984, Paris.
"Recent Developments in Digital Audio Techniques", Gundry et al., Dolby Laboratories, 73rd AES Convention, Mar. 15-18, 1983, Eindhoven, The Netherlands.
Product specification sheet for Signetics NE5240 Dolby digital audio recorder.

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