US PATENT SUBCLASS 367 / 45
.~.~.~.~ Adaptive filters

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  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.