US PATENT SUBCLASS 370 / 478
.~ Combined time division and frequency division

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

464  DF  COMMUNICATION TECHNIQUES FOR INFORMATION CARRIED IN PLURAL CHANNELS {9}
478.~ Combined time division and frequency division

DEFINITION

Classification: 370/478

Combined time division and frequency division:

(under subclass 464) Subject matter wherein information signals are combined or distributed via both time and frequency channels.

SEE OR SEARCH THIS CLASS, SUBCLASS:

330, for channel assignment having both time and frequency in communication over free space.

436, for channel assignment having both time and frequency.