US PATENT SUBCLASS 370 / 269
.~.~.~.~ Including cancellation of certain signals

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

259  DF  SPECIAL SERVICES {3}
260  DF  .~ Conferencing {2}
263  DF  .~.~ Conferee signals combined or distributed via time channels {3}
266  DF  .~.~.~ Using summation of conferee signals {2}
269.~.~.~.~ Including cancellation of certain signals

DEFINITION

Classification: 370/269

Including cancellation of certain signals:

(under subclass 266) Subject matter wherein the summation is combined with a subtraction of certain signals.