US PATENT SUBCLASS 327 / 74
.~.~ Input signal compared to plural fixed references

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}
74.~.~ Input signal compared to plural fixed references {2}
75  DF  .~.~.~> Three or more
76  DF  .~.~.~> With logic or bistable circuit

DEFINITION

Classification: 327/74

Input signal compared to plural fixed references:

(under subclass 50) Subject matter wherein input signal amplitude is evaluated relative to two or more unvarying voltage or current levels.

SEE OR SEARCH THIS CLASS, SUBCLASS:

63+, for amplitude comparison between plural varying inputs.

72+, for an input signal compared to a reference derived therefrom.

77+, for an input signal compared to a single fixed reference.

205+, for a stable state circuit utilizing hysteresis.

SEE OR SEARCH CLASS

326, Electronic Digital Logic Circuits, 22, for input noise margin enhancement.