Signal conversion circuits

Details Signal conversion circuits Signal conversion circuits

H - Electricity

03

M

354/103

H03M 7/50 (2006.01)

Patent

CA 1265251

ABSTRACT SIGNAL CONVERSION CIRCUITS A linear to A-law and A-law to linear pcm-tdm encoding circuit converts two sixteen bit linear encoded pcm-tdm data streams to one eight bit A-law encoded pcm-tdm data stream having twice as many channels and vice-versa. Incoming bit streams constantly step through the circuit with either A-law encoded or linear encoded data being converted to an intermediate code comprising a sign bit, a chord number and step bits prior to conversion to the desired output encoding. Using shift registers and multiplexers addressed by stored chord numbers ensures minimum delay of the data during conversion.

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