US PATENT SUBCLASS 367 / 21
.~.~ Signal processing

Current as of: June, 1999
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367 /   HD   COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES

14  DF  SEISMIC PROSPECTING {4}
15  DF  .~ Offshore prospecting {4}
21.~.~ Signal processing {3}
22  DF  .~.~.~> Transducer output weighting
23  DF  .~.~.~> Controlled source signalling
24  DF  .~.~.~> Reverberation removal

DEFINITION

Classification: 367/21

Signal processing:

(under subclass 15) Subject matter wherein electric signals representative of the detected acoustic waves or constituents

of such signals are distinguished from one another or from other kinds of signals (e.g., noise) and/or wherein the information or intelligence contained in such signals pertaining to the characteristics or location of the discontinuity is identified.

SEE OR SEARCH CLASS

702, Data Processing: Measuring, Calibrating, or Testing,

14+, for computer and data processing system especially designed to be used with seismic prospecting systems, particularly subclass 17 for filtering or noise reduction.