US PATENT SUBCLASS 178 / 19.01
.~.~ Writing digitizer stylus

Current as of: June, 1999
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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}
19.01.~.~ Writing digitizer stylus {5}
19.02  DF  .~.~.~> Acoustical stylus
19.03  DF  .~.~.~> Capacitive or inductive stylus
19.04  DF  .~.~.~> Pressure stylus
19.05  DF  .~.~.~> Light pen
19.06  DF  .~.~.~> AC source {1}

DEFINITION

Classification: 178/19.01

Writing digitizer stylus:

(under subclass 18.01) Subject matter including a structure or a characteristic of a handheld pointing device which provides position coordinate input to the sensing surface of the tablet.

SEE OR SEARCH THIS CLASS, SUBCLASS:

18.01, for position coordinate determination for writing.

SEE OR SEARCH CLASS

341, Coded Data Generation or Conversion,

5, for X and Y coordinate determination in a digital pattern reading-type converter using a stylus pad.

345, Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems,

179, for a combination of a display device and a stylus. 364, Electrical Computers and Data Processing Systems,

709.01+, for an electric digital calculating computer using specialized input.