US PATENT SUBCLASS 382 / 122
.~.~.~ Sensing speed or acceleration only

Current as of: June, 1999
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382 /   HD   IMAGE ANALYSIS

100  DF  APPLICATIONS {20}
115  DF  .~ Personnel identification (e.g., biometrics) {5}
119  DF  .~.~ Using a signature {4}
122.~.~.~ Sensing speed or acceleration only

DEFINITION

Classification: 382/122

Sensing speed or acceleration only:

(under subclass 119) Subject matter wherein the characteristic of the writing sample used is only speed (velocity, that is, the first derivative of the values of the pen movement) or acceleration (change in velocity, that is, the second derivative of the values of the pen movement) exerted by the writer with a writing instrument during the writing of the sample.