Position sensor
US8243033B2 · kind B2 · utility
7Cited by
162References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2009 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Aug 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/0339
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A low-cost x-y digitizing system for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitizer includes a resonant stylus, an excitation winding for energizing the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined. A novel stylus design is described together with novel digitizer windings and novel excitation and processing circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.