Method and apparatus for on-site calibration of visual displays
US7907154B2 · kind B2 · utility
16Cited by
17References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2003 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Nov 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0666
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides methods and apparatuses for on-site calibration of a visual display sign. In one exemplary implementation of the invention, an imaging device captures image data from a visual display sign. The imaging device can include a CCD digital camera and optics for long-range imaging. The captured image data is sent to an interface that compiles the data. The interface then calculates correction factors for the image data that may be used to achieve target color and brightness values for the image data. The interface then uploads the adjusted image data back to the visual display sign.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.