Method and apparatus for reducing flat panel display horizontal scan signal interference in the electrostatic pen operated digitizer
US6124848A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1997 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Aug 1, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0443
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A flat panel display is coupled with an electrostatic stylus driven digitizing panel to produce a display and digitizer system having an interference control feature. The interference control feature first determines the operating frequency of the flat panel display and/or the operating frequency of the stylus. The interference controller may then incrementally reduce the operating frequency of the flat panel display and/or the operating frequency of the stylus until the operating frequency causing the least interference is ascertained. Once the operating frequency causing the least interference is ascertained the interference controller selects new operating parameters for the display and digitizer system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.