Detector to determine the presence of an electrical signal in th

Details Detector to determine the presence of an electrical signal in th Detector to determine the presence of an electrical signal in th

1979-06-07

1981-10-27

Robinson, Thomas A.

179 1D, 179 1P, 179 15D, H04M 150, H04B 106, H04K 520

Patent

active

042975336

ABSTRACT:
A detector for determining the presence of an electrical signal in the presence of noise, the electrical signal having at least two predetermined characteristics, includes a signal transforming device for obtaining a plurality of independent estimates of each characteristic, a classification device connected to the signal transforming device for sorting the plurality of independent estimates into at least two classes, and a counting device for signaling the presence of the electrical signal, when the number of the estimates within one class exceeds a predetermined number.

REFERENCES:
patent: 3588363 (1971-06-01), Herscher et al.
patent: 3937899 (1976-02-01), Denenberg
patent: 3944753 (1976-03-01), Proctor et al.
patent: 3946157 (1976-03-01), Dreyfus
patent: 3990006 (1976-11-01), Zebo et al.
patent: 4009353 (1977-02-01), James et al.
patent: 4057690 (1977-11-01), Vagliani et al.
patent: 4063031 (1977-12-01), Grunza
patent: 4119808 (1978-10-01), Atkin

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