Digitizer
US8890828B2 · kind B2 · utility
1Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2012 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Feb 5, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/03545
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is a digitizer including: an input unit having a magnetic field shielding part embedded therein; a driving coil supplied with current to induce a magnetic line of force; a sensing coil to which voltage is induced by the magnetic line of force; and a control unit supplying current to the driving coil and measuring voltage induced to the sensing coil, wherein the control unit senses variation of voltage induced to the sensing coil to calculate coordinates of the input unit when the voltage induced to the sensing coil is changed by the magnetic field shielding part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.