Optimized digital delta modulation compander having truncation e

Details Optimized digital delta modulation compander having truncation e Optimized digital delta modulation compander having truncation e

1979-12-17

1981-04-28

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

332 11D, H03K 1322, H04B 1204

Patent

active

042649749

ABSTRACT:
A digital delta modulation compander circuit makes advantageous use of the mathematical truncation created during the computation of step sizes to create a non-linear step size variation which differs from the optimum desired step size but causes convergence recovery during error conditions. It has been discovered that the truncation involved in the inaccurate approximation of mathematical calculation of the step sizes produces an advantageous result which leads to an optimized digital delta modulation compander that will recover from transmission errors over a wider range and with greater efficiency than other methods.

REFERENCES:
patent: 3922606 (1975-11-01), Nordling
patent: 3922619 (1975-11-01), Thompson
patent: 3991269 (1976-11-01), Brown
patent: 3995218 (1976-11-01), Moriya
patent: 4110705 (1978-08-01), Crouse
patent: 4123709 (1978-10-01), Dodds
patent: 4199722 (1980-04-01), Paz
patent: 4208740 (1980-06-01), Yin

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