Method of calibrating a display device by iteration in order to optimize an electrical control voltage of the display device
US8427501B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 2009 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Jun 15, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method of calibration of a display device by iteration in order to optimize an electrical control voltage of the display device, the calibration method comprising a measurement of an optical contrast of the display device and a calculation of an electrical control voltage value, the optical contrast measurement and the calculation of the electrical voltage value being carried out once during each calibration step, the optimization of the electrical control voltage being carried out starting from an initial value of the electrical control voltage and ending with a final value of the electrical control voltage, the calibration method being carried out by means of an initial calibration step and by means of a calibration refinement step, the initial calibration step being carried out once during the calibration method, the calibration refinement step being carried out once or several times during the calibration method, the approximation of the final value of the electrical control voltage due to the initial calibration step being higher than the approximation of the final value of the electrical control voltage due to the calibration refinement step…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.