US PATENT SUBCLASS 370 / 286
.~.~ Echo suppression or cancellation

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.~.~ Echo suppression or cancellation {5}
287  DF  .~.~.~> Disabling or inhibiting
288  DF  .~.~.~> Using an attenuator
289  DF  .~.~.~> Having residual echo cancellation or suppression
290  DF  .~.~.~> Using a particular adaptive filter {1}
292  DF  .~.~.~> Using a training sequence

DEFINITION

Classification: 370/286

Echo suppression or cancellation:

(under subclass 282) Subject matter having means to reduce undesirable effects caused by reflected communication signals.

SEE OR SEARCH CLASS

379, Telephonic Communications,

406+, for this subject matter in a nonmultiplexed telephone circuit.