US PATENT SUBCLASS 318 / 604
.~.~ Analogue comparison

Current as of: June, 1999
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318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

560  DF  POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) {23}
600  DF  .~ Digital or numerical systems {3}
604.~.~ Analogue comparison {1}
605  DF  .~.~.~> Synchro or resolver (e.g., transmitter simulators)

DEFINITION

Classification: 318/604

(under subclass 600) Subject matter in which the digital command signal is converted to an analog signal which is compared with an analog position signal to form the system error signal.

(1) Note. Included herein are systems which feature specific digital to analog converters.

SEE OR SEARCH CLASS

341, Coded Data Generation or Conversion,

126+, for digital to or from analog converters.