H - Electricity – 04 – M
Patent
H - Electricity
04
M
379/66
H04M 7/00 (2006.01) H04B 1/58 (2006.01) H04L 12/413 (2006.01)
Patent
CA 1238131
CONTROL CIRCUIT FOR AN ADAPTIVE HYBRID CONTROL IN A LOCAL AREA NETWORK Abstract of the Disclosure In a local area network having a plurality of stations coupled to a transmission line over which signals are being simultaneously transmitted and received and wherein each station includes a station controller, a transmitter, a receiver and an adaptive hybrid circuit coupled to the transmission line and between the transmitter and the receiver for adaptive- ly canceling crosstalk from the transmitter to the receiver, a control circuit in each station for con- trolling the operation of the adaptive hybrid circuit in the station. In a first embodiment of the inven- tion the control circuit includes a first circuit responsive to a request-to-send signal from the sta- tion controller for generating a first signal to enable a signal to be transmitted by the transmitter, and a second circuit responsive to the first signal for enabling the adaptive hybrid circuit to adaptively cancel crosstalk from the transmitter to the receiver after a preselected period of time after the start of each transmission.
496281
Claessen Albertus M.g.
Van Bokhorst Hendrik
Ncr Corporation
Smart & Biggar
LandOfFree
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