US PATENT SUBCLASS 375 / 219
TRANSCEIVERS


Current as of: June, 1999
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375 /   HD   PULSE OR DIGITAL COMMUNICATIONS

219TRANSCEIVERS {3}
220  DF  .~> Transmission interface between two stations or terminals
221  DF  .~> Loopback mode
222  DF  .~> Modems (data sets) {1}


DEFINITION

Classification: 375/219

TRANSCEIVERS:

(under the class definition) Subject matter in which a transmitter and a receiver are at the same location and transmit and receive over the same medium to-and-from the same remote station.

(1) Note. The simultaneous operation of a transmitter and receiver is a duplex operation and is classified in Class 370, Multiplex Communications, subclasses 276+.

(2) Note. This and indented subclasses accept nominal recitation of a digital data processing system or function in combination with transceivers and data sets. Significant digital data pre- and postprocessing in combination with transceivers are classified elsewhere.

SEE OR SEARCH CLASS

395, Information Processing System Organization,

821, 894 for transferring data from one or more peripherals to one or more computers or digital data processing systems for the latter to process, store, or further transfer or for transferring data from the computers or digital data processing systems to the peripheral.of information processing system.

455, Telecommunications,

73+, for analog carrier wave transceivers.