Patent · US Expired

Pointer tool

US7308121B2 · kind B2 · utility

71Cited by

23References

10Claims

0Family size

Assignee

IDEX ASA · NO

Inventors

Stig Mathiassen · Oslo, NO
Svein Mathiassen · Heggedal, NO
Jon Nysaether · Oslo, NO

Key dates

Filing date	Jun 8, 2001
Grant date	Dec 11, 2007
Priority date	—
Expiry date	Dec 26, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG06F2203/0339
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

This invention relates to a pointer tool for connecting to a display device, comprising a number of sensors elements being positioned on a two-dimensional surface, for measuring a predetermined parameter at a surface, the measured quantity being sampled at a chosen rate, and calculating means for comparing the measurements from the sensor elements for detection of movements in two dimension over the elements based on changes in the measured parameter, the time between the changes and the known relative positions between the sensor elements.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.