The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2001
Filed:
Mar. 07, 1997
George E. Gerpheide, Salt Lake City, UT (US);
Rick L. Johnson, Ogden, UT (US);
Marty McDonald, Salt Lake City, UT (US);
Cirque Corporation, Salt Lake City, UT (US);
Abstract
A method and apparatus for providing accelerated X and Y axis position determination of a probe relative to a touchpad surface by enabling determination of the X and Y axis coordinates independent of each other. The apparatus of the present invention enables simplification of the electronics of the touchpad because fewer sense lines are required to achieve position resolution which is finer than the electrode pitch. Position determination is further accelerated because fewer position measurements are then required to compensate for such problems as probe symmetry duplication.