US PATENT SUBCLASS 327 / 185
.~ Particular stable state circuit (e.g., tristable, etc.)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

100  DF  SIGNAL CONVERTING, SHAPING, OR GENERATING {29}
185.~ Particular stable state circuit (e.g., tristable, etc.) {12}
186  DF  .~.~> Superconductive (e.g., cryogenic, etc.)
187  DF  .~.~> External effect device (e.g., light, heat, magnetic, or mechanical force sensitive devices, etc.)
188  DF  .~.~> Minority carrier storage effect {1}
190  DF  .~.~> With transformer or saturable core device {1}
192  DF  .~.~> Negative resistance transistor (e.g., unijunction, etc.) {1}
194  DF  .~.~> Zener or capacitive diode
195  DF  .~.~> Negative resistance diode having "N"-shape characteristic on I-V plot (e.g., tunnel diode, backward diode, etc.)
196  DF  .~.~> Negative resistance diode having "S"-shape characteristic on I-V plot (e.g., four or more layer semiconductor device, etc.)
197  DF  .~.~> Convertible circuit (e.g., bistable to monostable, D-type to T-type, etc.)
198  DF  .~.~> Initializing, resetting, or protecting a steady state condition
199  DF  .~.~> Circuit having only two stable states (i.e., bistable) {11}
227  DF  .~.~> Monostable {3}

DEFINITION

Classification: 327/185

Particular stable state circuit (e.g., tristable, etc.):

(under subclass 100) Subject matter comprising a circuit which will remain in a distinct current conductive steady-state condition unless toggled therefrom by a trigger input.

(1) Note. The condition to which the circuit may be toggled may itself be stable or it may be unstable.

(2) Note. Detailed flip-flops, per se, generally are contained herein; however, multifunctional or programmable logic having a flip-flop is classified in Class 326, subclasses 37+, and redundant logic having a flip-flop is classified in Class 326, subclass 12.

SEE OR SEARCH THIS CLASS, SUBCLASS:

365+, for gating of an unmodified input signal to an output.

SEE OR SEARCH CLASS

326, Electronic Digital Logic Circuitry, 12, for redundant logic and flip-flop, subclasses 40 and 46 for programmable logic and flip-flop, and subclasses 59+ for logic circuits having three or more active states.

331, Oscillators, appropriate subclasses for free running oscillators (e.g., astable circuits).