Transmission system by means of time quantization and trivalent

Details Transmission system by means of time quantization and trivalent Transmission system by means of time quantization and trivalent

1976-05-27

1978-07-04

Safourek, Benedict V.

H03K 1322

Patent

active

040991229

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 auxiliary information is fed to the DPCM code groups to obtain composite code groups, while 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 by effective perturbation reduction, in addition to which a pulse can be saved in the transmitted code groups.

REFERENCES:
patent: 3439753 (1969-04-01), Mounts et al.
patent: 3631520 (1971-12-01), Atal
patent: 3973199 (1976-08-01), Widmer

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