Capacitive stylus for a touch screen
US8493359B2 · kind B2 · utility
51Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2011 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Oct 24, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0442
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system comprising a sensing device and a capacitive sense array configured to track the position of a stylus and synchronize the capacitive sense array to the stylus transmit signal. The system is configured to track the position of both a stylus and a passive touch object. The system is further configured to track the position of the stylus using self capacitance sensing and track the position of the passive touch object using mutual capacitance sensing. The system further configured to modulate the stylus transmit signal to include additional data to support additional stylus functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.