US PATENT SUBCLASS 370 / 451
.~.~.~ On bus

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

431  DF  CHANNEL ASSIGNMENT TECHNIQUES {12}
449  DF  .~ Polling {1}
450  DF  .~.~ Passing a signal identifying the idle or busy state of a channel (e.g., token passing) {2}
451.~.~.~ On bus {1}
452  DF  .~.~.~.~> On ring or loop {4}

DEFINITION

Classification: 370/451

On bus:

(under subclass 450) Subject matter in which the idle or busy signal is passing on a common trunk line to which a number of terminals can be connected through couplers.