(under the class definition) Subject matter for controlling the operation of one or more devices to obtain a plurality of results by transmission of a designated one of plural distinctive acoustic control signals over a smaller number of communications channels than the number of distinct results.
(1) Note. Included herein are plural addressable receiving devices.
(2) Note. Underwater remote control is excluded from this subclass, and is classified in subclass 133.
SEE OR SEARCH THIS CLASS, SUBCLASS:
33, for selective control of acoustic well logging.
65+, for selective control of the gain of a land reflection type signal analyses and/or correction in seismic prospecting.
84, and 85, for valve control in acoustic wellbore telemetry. 95+, for acoustic echo systems where the returned signal is used for selective control.
133, for underwater selective remote control.
SEE OR SEARCH CLASS
340, Communications: Electrical,
825+, for similar subject matter using communication lines other than acoustical, and the search notes thereto for other pertinent subject matter.
359, Optics: Systems (Including Communication) and Elements,
