Position digitizing using an optical stylus to image a display
US7646377B2 · kind B2 · utility
23Cited by
26References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 2005 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Apr 13, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/03545
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides systems and methods of using an stylus that houses optics and a detector capable of imaging display pixels. Stylus position is determined according to the number and direction of imaged pixels passing through the field of view of the stylus optics. Stylus orientation, including rotation and tilt, stylus height, stylus contact state, and stylus pressure may also be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.