Computer system and related method for calibrating a digitizer without utilizing calibration software
US7327353B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2004 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Feb 2, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N17/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computer system includes a screen for displaying images, a central processing unit (CPU) for controlling the operation of the computer system, an on-screen display (OSD) circuit electrically connected to the CPU and the screen for controlling the screen to display a plurality of test marks according to a plurality of predetermined coordinate values, a touch panel installed parallel to the display face of the screen for generating a plurality of test sensing signals according to positions at which it is triggered, and a control circuit electrically connected to the touch panel and the CPU for calibrating the coordinate values converted by the control circuit from the sensing signals generated by triggering the touch panel, according to the plurality of predetermined coordinate values and the plurality of test sensing signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.