US PATENT SUBCLASS 340 / 870.21
.~.~.~ Analog to digital function converter

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

870.01  DF  CONTINUOUSLY VARIABLE INDICATING (E.G., TELEMETERING) {15}
870.18  DF  .~ Using a particular modulation (e.g., phase, frequency, or amplitude) {1}
870.19  DF  .~.~ Pulse {5}
870.21.~.~.~ Analog to digital function converter

DEFINITION

Classification: 340/870.21

Analog-to-digital function convertor:

(under subclass 870.19) Subject matter wherein an analog-to-digital convertor is used in a pulse modulation system.

(1) Note. Digital is of, or pertaining to, the class of devices or circuits in which the output varies in discrete steps (i.e., pulses or "on-off" operation).

(2) Note. Analog is of, or pertaining to, the general class of devices or circuits in which the output varies as a continuous function of the input.

(3) Note. Specific structure of an analog to digital function converter is necessary for classification herein, nominal recitation is not sufficient.

SEE OR SEARCH CLASS

341, Coded Data Generation or Conversion,

155+, for an analog to digital converter. 364, Electrical Computers and Data Processing Systems, appropriate subclasses for analog to digital function converters used in electrical computers and data processing systems.