US PATENT SUBCLASS 370 / FOR 146
.~.~.~ Token passing (370/85.4)

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

FOR 135  DF  TIME DIVISION (370/77) {14}
FOR 143  DF  .~ Bus transmission (370/85.1) {5}
FOR 144  DF  .~.~ Contention (370/85.2) {2}
FOR 146.~.~.~ Token passing (370/85.4) {1}
FOR 147  DF  .~.~.~.~> Loop or ring (370/85.5)

DEFINITION

Classification: 370/FOR.146

Token passing:

Foreign art collection including subject matter in which a signal (token) indicative of the occupancy of the communication channel is used to control access to the

communication channel.