High-speed difference pulse code modulation coder

Details High-speed difference pulse code modulation coder High-speed difference pulse code modulation coder

1983-08-16

1985-09-10

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

332 11D, H04B 1204

Patent

active

045411026

ABSTRACT:
A high-speed difference pulse code modulation coder comprises a calculating unit for determining an estimated value, the calculating unit comprising a quantizer which is preceded by three subtractors and has a plurality of outputs for emitting various calculated values. The difference pulse code modulation signal is calculated in a plurality of consecutive steps by way of intermediate values for calculation of a difference pulse code modulation signal, only two calculating steps are required within one period of the pulse code modulation signal to be processed.

REFERENCES:
patent: 4470146 (1984-09-01), Yatsuzuka et al.
Principles of Pulse Code Modulation, Cattermole, Iliffe Books, London, 1969, pp. 198-219.
A. J. Goldberg et al., "A Real-Time Adaptive Predictive Coder Using Small Computers", IEEE Transactions on Communications, vol. COM-23, No. 12, Dec. 1975, pp. 1443-1451.

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