Coherent light generators – Particular beam control device – Optical output stabilization
Patent
1991-09-24
1993-04-27
Olms, Douglas W.
Coherent light generators
Particular beam control device
Optical output stabilization
379410, H04B 323
Patent
active
052068544
ABSTRACT:
In a full-duplex modem, correlation of an echo estimate signal with an echo-canceled signal is used to determine the presence or absence of a remote signal.
REFERENCES:
patent: 4707824 (1987-11-01), Kanemasa
patent: 4769808 (1988-09-01), Kanemasa
Betts William L.
Day, II Robert A.
AT&T Bell Laboratories
Brendzel Henry T.
Kizou H.
Olms Douglas W.
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