US PATENT SUBCLASS 327 / 60
.~.~.~ Employing input compared to reference derived therefrom

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

1  DF  SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL {11}
50  DF  .~ By amplitude {9}
58  DF  .~.~ Maximum or minimum amplitude {4}
60.~.~.~ Employing input compared to reference derived therefrom

DEFINITION

Classification: 327/60

Employing input compared to reference derived therefrom:

(under subclass 58) Subject matter wherein a signal from an external source is evaluated relative to a voltage or current obtained by processing signals from the same source.

(1) Note. For this subclass either the processing or means therefor should be claimed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

72+, for generic amplitude comparing between an input and a reference derived therefrom.