Digital modulator/demodulator including non-linear analog-to-dig

Details Digital modulator/demodulator including non-linear analog-to-dig Digital modulator/demodulator including non-linear analog-to-dig

1984-05-07

1989-01-24

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375122, 341140, H04B 1404

Patent

active

048005746

ABSTRACT:
A low cost analog-to-digital converter having a non-linear conversion characteristic produces an output digital signal non-linearly relative to an input analog transmission signal which is applied thereto for demodulation. A compensation circuit having a non-linear conversion characteristic converts the non-linear digital signal output from the analog-to-digital converter into a linear digital signal which has a larger number of bits than the non-linear digital signal.

REFERENCES:
patent: 3533098 (1970-10-01), Munoz
patent: 3790947 (1974-02-01), Campbell et al.
patent: 4037049 (1977-07-01), Lyon
patent: 4343759 (1982-08-01), Kustka et al.
patent: 4457004 (1984-06-01), Gersho et al.
patent: 4467318 (1984-08-01), Zeitraeg
patent: 4486876 (1984-12-01), Gaunt, Jr. et al.
patent: 4501001 (1985-02-01), Virupaksha et al.
patent: 4544916 (1985-10-01), Sharper

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