Signal receiver

Details Signal receiver Signal receiver

1986-05-20

1988-12-20

Fleming, Michael R.

Excavating

371 43, G06F 1110

Patent

active

047929529

ABSTRACT:
A receiver for the demodulation of FSK signal for passage to ancillary equipment has an error-corrector prior to demodulator. In preparing received signals for error-correction, they are passed to a counter which notes the number of cycles within each symbol of the signal. Thereafter, this count is used by a calculator and a classifier to derive a confidence level indicating the degree of certainty of the symbol having the carrier frequency. This confidence level is used in the error-correcting and/or demodulation operations.

REFERENCES:
patent: 4471485 (1984-09-01), Prevot
patent: 4475219 (1984-10-01), Puckette
patent: 4519080 (1985-05-01), Synder
patent: 4569050 (1986-02-01), Ohme
patent: 4631735 (1986-12-01), Oureshi
patent: 4641327 (1987-02-01), Wei
patent: 4653053 (1987-03-01), Pelchat
patent: 4654854 (1987-03-01), Heppe

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