(under subclass 144) Subject matter in which at least one modulator is an amplitude modulator or in which amplitude modulation is produced in addition to phase modulation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
108, for plural modulation in a pulse modulator.
119+, for plural modulation in a frequency modulator.
151+, for plural modulation in an amplitude modulator.
SEE OR SEARCH CLASS
370, Multiplex Communications, appropriate subclasses and particularly 204+, for plural diverse modulation techniques, subclass 215 for a multiplexer using phase modulation, subclass 483 for a multiplexer using frequency modulation, subclass 533 for a multiplexer using pulse amplitude modulation.
455, Telecommunications,
61, for plural modulation where a single message is conveyed between a separated transmitter and receiver and subclass 102 for plural modulation in a telecommunications transmitter.
