(under subclass 203) Subject matter wherein a wave carrier of information is being modified by more than one modulation technique.
SEE OR SEARCH THIS CLASS, SUBCLASS:
478, for a system employing both time division and frequency division multiplex.
SEE OR SEARCH CLASS
332, Modulators,
108, for multiplex pulse modulation, per se; subclasses 119+ for multiplex frequency modulation, per se; subclasses 144+ for multiplex phase modulation, per se; and subclasses 151+ for multiplex amplitude modulation, per se.
375, Pulse or Digital Communications, appropriate subclass for nonmultiplexed pulse or digital modulation in combination with analog modulation.
381, Electrical Audio Signal Processing Systems, and Devices, 2+, for broadcast or multiplex stereo systems using plural diverse types of modulation.
455, Telecommunications,
102, for plural modulations of nonmultiplexed analog signals.
