US PATENT SUBCLASS 370 / 499
.~.~ Polarity multiplex

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

464  DF  COMMUNICATION TECHNIQUES FOR INFORMATION CARRIED IN PLURAL CHANNELS {9}
498  DF  .~ Combining or distributing information via time channels {17}
499.~.~ Polarity multiplex

DEFINITION

Classification: 370/499

Polarity multiplex:

(under subclass 498) Subject matter in which positive and negative half cycles of a carrier wave are respectively modulated independently by signals from different sources.

SEE OR SEARCH CLASS

381, Electric Audio Signal Processing Systems and Devices,

2+, for broadcast or multiplex stereo which may include polarity multiplex technique.