Touch tracking on a touch sensitive interface
US9134848B2 · kind B2 · utility
0Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 2009 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Dec 5, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04186
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method tracks a plurality of touch points across successive frames of a touch sensitive input device to determine a trajectory. Each touch point on a frame of a touch sensitive input device is correlated with another distinct touch point on a subsequent frame of the same touch sensitive input device. The correlation is based on examining in the subsequent frame an area surrounding each touch point on the previous frame. Touch points identified within this search area are prioritized based on a projected trajectory through the prior touch point based on historical data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.