.~ 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.
