US PATENT SUBCLASS 455 / 68
.~ With control signal

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

39  DF  TRANSMITTER AND RECEIVER AT SEPARATE STATIONS {14}
68.~ With control signal {2}
69  DF  .~.~> Transmitter controlled by signal feedback from receiver
70  DF  .~.~> Receiver control signal originates at message transmitter {2}

DEFINITION

Classification: 455/68

With control signal:

(under subclass 39) Subject matter wherein the communication apparatus includes an intelligence signal transmitted from a transmitter to a receiver over distances large compared with their dimensions and where one of either the transmitter or receiver includes controlling means which causes some modification of the operation of the other.