US PATENT SUBCLASS 370 / 290
.~.~.~ Using a particular adaptive filter

Current as of: June, 1999
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370 /   HD   MULTIPLEX COMMUNICATIONS

276  DF  DUPLEX {6}
282  DF  .~ Transmit/receive interaction control {4}
286  DF  .~.~ Echo suppression or cancellation {5}
290.~.~.~ Using a particular adaptive filter {1}
291  DF  .~.~.~.~> Using a transversal filter

DEFINITION

Classification: 370/290

Using a particular adaptive filter:

(under subclass 286) Subject matter having a filtering apparatus which adapts itself to the varying echo signal to suppress or cancel the echo in the main or primary signal.