Delta modulation decoder with charge quanta magnitude correction

Details Delta modulation decoder with charge quanta magnitude correction Delta modulation decoder with charge quanta magnitude correction

1978-10-30

1980-09-23

Sloyan, Thomas J.

Pulse or digital communications

Repeaters

Testing

332 11D, 340347DA, 340347M, H03K 1302

Patent

active

042245710

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 potential through a second integrating capacitor. The 1-pulses and the 0-pulses of the delta modulation signal, applied to the decoder, are applied to a current source circuit generating a positive charging quantum in response to each 1-pulse and a negative charging quantum in response to each 0-pulse. Said charging quanta are applied to the input terminal of the integrating network through a correction network. This correction network is controlled by the voltage V.sub.C3 across the second integrating capacitor, so that, if V.sub.C3 is positive, the positive charging quanta are reduced and/or the negative charging quanta increased and that, if V.sub.C3 is negative, the positive charging quanta are increased and/or the negative charging quanta reduced.

REFERENCES:
patent: 3750143 (1973-07-01), Osborne
patent: 4101881 (1978-07-01), De Freitas

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