US PATENT SUBCLASS 178 / 20.03
.~.~.~ Sampling circuit

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

Internet Version by PATENTEC © 1999      Terms of Use


178 /   HD   TELEGRAPHY

2 R  DF  SYSTEMS {21}
18.01  DF  .~ Position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) {4}
20.01  DF  .~.~ Writing digitizer circuit {3}
20.03.~.~.~ Sampling circuit

DEFINITION

Classification: 178/20.03

Sampling circuit:

(under subclass 20.01) Subject matter including a circuit that measures position coordinate input signals at intervals of time.

SEE OR SEARCH CLASS

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

91+, for miscellaneous sampling and holding circuits.

341, Coded Data Generation or Conversion,

5, for X - Y coordinate determination in a digital pattern reading-type converter and subclasses 20+ for bodily actuated code generators in which an operator makes physical contact to control the transmission or generation of a coded set of pulses.

345, Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems, 173+, for a combination of a display device and a writing digitizer pad, a stylus, or circuitry for position coordinate determination.