US PATENT SUBCLASS 327 / 34
.~.~ Narrow pulse elimination or suppression

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}
31  DF  .~ By pulse width or spacing {7}
34.~.~ Narrow pulse elimination or suppression

DEFINITION

Classification: 327/34

Narrow pulse elimination or suppression:

(under subclass 31) Subject matter wherein the output signal does not include portions of the input signal having a pulse width shorter than a predetermined time interval.

(1) Note. Narrow or short pulse (spurious) duration in a system may be noise, which is unwanted disturbances superimposed upon a useful signal and which tends to obscure its information content.

SEE OR SEARCH THIS CLASS, SUBCLASS:

172+, for rectangular or pulse waveform continuous width control.

178+, for rectangular or pulse waveform amplitude control which may include some noise reduction.

310+, for transient or signal noise reduction by limiting, clipping, or clamping.

379+, for noise overriding in gating or switching. 551+, for miscellaneous unwanted signal elimination.