Technique for synchronous near-instantaneous coding

Details Technique for synchronous near-instantaneous coding Technique for synchronous near-instantaneous coding

H - Electricity

03

M

354/71

H03M 7/30 (2006.01) G06F 3/05 (2006.01)

Patent

CA 1240799

- 12 - A TECHNIQUE FOR SYNCHRONOUS NEAR-INSTANTANEOUS CODING Abstract The present invention relates to a near instantaneous companding coder wherein the peak a-c amplitude of an input signal is measured over a block of K samples. Each of the K samples is coded into an n-bit quantized sample code word based on a step size quantizing control signal determined from the measured peak a-c amplitude. The step size quantizing control signal, and other overhead information such as parity, sync, etc., are formed into a K-bit overhead word and transmitted serially by adding a separate bit of K-bit overhead word to each of the corresponding K n-bit quantized sample code words associated with an immediately prior block of K sample code words. At the remote decoder, the received K-bit overhead information word is stored and used to decode the next subsequent block of K received n-bit quantized sample code words.

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