US PATENT SUBCLASS 370 / 491
.~.~ Pilot

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

464  DF  COMMUNICATION TECHNIQUES FOR INFORMATION CARRIED IN PLURAL CHANNELS {9}
480  DF  .~ Combining or distributing information via frequency channels {11}
491.~.~ Pilot

DEFINITION

Classification: 370/491

Pilot:

(under subclass 480) Subject matter in which at least one signal wave, usually a single frequency, is transmitted for control purposes, e.g., A.G.C., Doppler correction.

SEE OR SEARCH THIS CLASS, SUBCLASS:

500, for pilot control signal in multiplex communications over time channels.

SEE OR SEARCH CLASS

381, Electrical Audio Signal Processing Systems and Devices,

1+, for a stereo system with pilot signals.