Electromagnetic stylus and computer apparatus thereof
US8947405B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2012 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Jul 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2200/1632
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electromagnetic stylus includes a hollow body, a pen-nib device, an energy transforming device, a circuit board, and an electricity storage device. The pen-nib device is disposed at one end of the hollow body. The energy transforming device is disposed in the hollow body for converting variations in a physical quantity into electrical signals. The circuit board is disposed in the hollow body and electrically connected to the energy transforming device for rectifying the electrical signals transformed by the energy transforming device. The electricity storage device is disposed in the hollow body and electrically connected to the pen-nib device, for receiving the electrical signals transmitted from the circuit board to generate electrical energy and providing the electrical energy to the pen-nib device to generate electromagnetic signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.