US PATENT SUBCLASS 367 / 45
.~.~.~.~ Adaptive filters
Current as of:
June, 1999
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367 /
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COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES
14
DF
SEISMIC PROSPECTING
{4}
37
DF
.~ Land-reflection type {6}
38
DF
.~.~ Signal analysis and/or correction {15}
43
DF
.~.~.~ Filters {3}
45
.~.~.~.~ Adaptive filters
DEFINITION
Classification: 367/45
Adaptive filters:
(under subclass 43) Subject matter wherein the signal selecting characteristics of the filter are varied by the signal fed into the filter itself.
(1) Note. Filters of this subclass type may appear to "learn" to pass the proper signal.