US PATENT SUBCLASS 370 / 268
.~.~.~.~.~ 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}
267  DF  .~.~.~.~ Digital summation {1}
268.~.~.~.~.~ Including cancellation of certain signals

DEFINITION

Classification: 370/268

Including cancellation of certain signals:

(under subclass 267) Subject matter wherein the digital summation is combined with a subtraction of certain signals (e.g., canceling one of the conferee signals).