Transmission system with a transmitter and a receiver for...

Details Transmission system with a transmitter and a receiver for... Transmission system with a transmitter and a receiver for...

H - Electricity

03

M

325/28, 350/33

H03M 3/04 (2006.01) G06T 9/00 (2006.01)

Patent

CA 1081790

ABSTRACT: Indicated as hybrid D-PCM a new transmission system is given which is based on differential pulse code modulation (DPCM) with signal compression at the transmitter end and signal expansion at the receiver end. In the transmitter defined aux- iliary information is fed to the DPCM code groups to obtain composite code groups, whilst in the receiver a local auxiliary signal derived from a reconstruction device is subtracted in a separating device from the received composite signal. With a particularly simple construction hybrid D-PCM is distinguished as compared with DPCM be effective perturbation reduction, in addition to which a pulse can be saved in the transmitted code groups.

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