US PATENT SUBCLASS 370 / 295
.~ Frequency division
Current as of: June, 1999
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DEFINITION
Classification: 370/295
Frequency division:
(under subclass 276) Subject matter wherein simultaneous transmission and reception between communicating stations occur in separate portions of the frequency spectrum of the transmission medium.
(1) Note. Classification here requires more than merely two stations in communication on different frequencies. "Full duplex operation" (i.e., simultaneous transmission and
reception by each station) is required.
(2) Note. FDM duplex systems (i.e., FDM signals simultaneously transmitted and received) are classified here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
480+, for combining or distributing information via frequency channels not limited to a duplex system.
