Automatic d-c offset cancellation in pcm encoders

Details Automatic d-c offset cancellation in pcm encoders Automatic d-c offset cancellation in pcm encoders

H - Electricity

03

K

363/15, 354/71

H03K 13/02 (1980.01)

Patent

CA 1109155

Abstract of the Disclosure During encoding of voice frequency (YF) signal in a PCM channel bank the encoder encounters direct current (d-c) offset component resulting from the particular VF signal. Such d-c offsets cause errors above and beyond the normal encoders inherent in the normal encoding process. The present invention alleviates this problem by providing an automatic d-c offset cancellation circuit which closely follows the d-c offset component and provides a d-c component of opposite sign to cancel it.

282765

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