Patent · US Expired

Navigation tool

US7129926B2 · kind B2 · utility

86Cited by

8References

8Claims

0Family size

Assignee

IDEX ASA · NO

Inventors

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

Key dates

Filing date	Jun 8, 2001
Grant date	Oct 31, 2006
Priority date	—
Expiry date	Mar 28, 2022

Classification

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

Abstract

This invention relates to a navigation tool for connecting to a display device, comprising at least two sensor elements having known positions relative to each other, each sensor element being coupled to detector means for recording a change in a predetermined parametre and timing means for determining the time of change at each sensor element and calculating means for calculating the direction and speed of the recorded changes based on the relative positions of the sensor elements and the duration between the recorded changes.

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