US PATENT SUBCLASS 370 / 479
.~ Combining or distributing information via code word channels


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

464  DF  COMMUNICATION TECHNIQUES FOR INFORMATION CARRIED IN PLURAL CHANNELS {9}
479.~ Combining or distributing information via code word channels


DEFINITION

Classification: 370/479

Combining or distributing information via code word channels:

(under subclass 464) Subject matter in which each multiplexed channel consists of a unique code word which carries the information.

(1) Note. Separation of each multiplexed channel is usually achieved by correlation detection.

(2) Note. PCM or pulse code modulation, which is a particular technique for transmitting digital signal, should not be classified in this subclass if its use is not to make

a channel distinct in multiplex communications.

(3) Note. A synchronizing word which may use a particular coding sequence for synchronization purpose is classified in subclasses 503+.

SEE OR SEARCH CLASS

375, Pulse or Digital Communications,

200+, for spread spectrum having nonmultiplex code word communication.