US PATENT SUBCLASS 367 / 38
.~.~ Signal analysis and/or correction

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

14  DF  SEISMIC PROSPECTING {4}
37  DF  .~ Land-reflection type {6}
38.~.~ Signal analysis and/or correction {15}
39  DF  .~.~.~> Random signal correlation
40  DF  .~.~.~> Received correlation
41  DF  .~.~.~> Transmitted correlation
42  DF  .~.~.~> Standard correlation
43  DF  .~.~.~> Filters {3}
47  DF  .~.~.~> Amplitude
48  DF  .~.~.~> Phase
49  DF  .~.~.~> Frequency
50  DF  .~.~.~> Timing correction {3}
55  DF  .~.~.~> Timing mark generation
56  DF  .~.~.~> Particular source-receiver array {1}
58  DF  .~.~.~> By receiver pattern arrangement
59  DF  .~.~.~> Compositing system {4}
64  DF  .~.~.~> Optical processing
65  DF  .~.~.~> Gain control {2}

DEFINITION

Classification: 367/38

Signal analysis and/or correction:

(under subclass 37) Subject matter wherein various electrical 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.