System and method for adjusting the illumination characteristics of an output device
US5786803A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1994 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Sep 20, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/58
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for correcting an output device for the effects reflected ambient illumination comprises an output device, a calibration memory, a reflectivity memory, a system memory, a processor, an input device, a video card, a color display memory, and a reflection device of known reflectivity. The color display memory stores a first graphical interface and a second graphical interface. The first graphical interface displays a range of intensities of outputs that the display device can generate. The second graphical interface displays a range of hues that the display device can generate. The reflection device defines an aperture. The reflection device is compared to the first graphical interface and the second graphical interface by viewing the interfaces through the aperture. The present invention includes a method for compensating an output device for reflected ambient illumination. The system receives a first input of an intensity of the first graphical interface that appears to match the ambient illumination reflected from the reflection device; the system then receives a second input of a hue of the second graphical interface that appears to match the ambient illumination reflect…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.