Tracking window for a digitizer system
US7649524B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2005 |
| Grant date | Jan 19, 2010 |
| Priority date | — |
| Expiry date | Nov 20, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04106
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A digitizer apparatus for digitizing user interactions, for example detecting locations of physical objects, comprises: sensing elements, spread across a sensing area, configured for sensing the user interactions, say involving a stylus or like object, and a controller, associated with the sensing elements, configured to dynamically select a tracking window for the interaction, the tracking window comprising a subset of the sensing elements which are activated for sensing the object. The window is selected to center on the interaction based on e.g. last known location data, and thereby save processing resources by sampling only the minimum number of sensing elements necessary at any time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.