US PATENT SUBCLASS 340 / 310.01
.~ Signal over power line

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

286.01  DF  SYSTEMS {24}
310.01.~ Signal over power line {6}
310.02  DF  .~.~> Modulation technique
310.03  DF  .~.~> Noise reduction (e.g., filtering) {1}
310.05  DF  .~.~> Impedance matching (e.g., Y-match or delta match)
310.06  DF  .~.~> Bidirectional (e.g., with transceiver)
310.07  DF  .~.~> With inductive coupling (e.g., transformer or torroid)
310.08  DF  .~.~> With coupling plug

DEFINITION

Classification: 340/310.01

Signal over power line:

(under subclass 286.01) Subject matter wherein communication signals are sent from one point to another in a system by means of an existing power line in the system.

(1) Note. The system may be an electric light system over whose conducters the signals are sent.

(2) Note. The information signal may be an address or a code signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

288+, for this subject matter where the signal system is a signal box system.

320, for signaling systems in which the electric signal is sent along a fluid conduit.

SEE OR SEARCH CLASS

455, Telecommunications, 3.3, for a radio communication system combined with a power distribution network, and subclass 270 for a radio receiver using a power line as a wave collector.