Delta modulation decoder

Details Delta modulation decoder Delta modulation decoder

H - Electricity

03

M

354/69

H03M 3/02 (2006.01)

Patent

CA 1130460

PHN.8954 -18- 27-6-1978 ABSTRACT: Delta modulation decoder comprising an integrating network provided with a first integrating capacitor which is on the one hand connected to an input terminal of the integrating network and on the other hand to ground po- tential through a second integrating capacitor. The 1- pulses and O-pulses of the delta modulation signal, ap- plied to the decoder, are applied to a current source cir- cuit generating a positive charging quantum in response to each 1-pulse and a negative charging quantum in res- ponse to each O-pulse. Said charging quanta are applied to the input terminal of the integrating network through a correction network. This correction network is con- trolled by the voltage VC3 across the second integrating capacitor, so that, if VC3 is positive, the positive charging quanta are reduced and/or the negative charging quanta increased and that, if VC3 is negative, the posi- tive charging quanta are increased and/or the negative charging quanta reduced.

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