Method and apparatus for quasi-3D tracking using 2D optical motion sensors
US8314774B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2007 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | May 25, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/03544
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
One embodiment relates to a user input device for tracking motion. The device includes a tracking ball and a user-accessible touching area for user manipulation of the tracking ball. First and second two-dimensional sensors are positioned at tracking heights away from the tracking ball. The first two-dimensional sensor may be positioned across the tracking ball and opposite to the user-accessible touching area. The second two-dimensional sensor may be positioned at an angle with respect to a z-axis defined as extending from the user-accessible touching area through a center of the tracking ball to the first two-dimensional sensor. Other embodiments, aspects and features are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.