Systems and methods for color targeting for accurate white colors and saturated colors
US12101856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2021 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Mar 18, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6058
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of driving a plurality of LED-based light sources to provide accurate white points and saturated color points. The method includes receiving or setting a selectable target chromaticity; determining that the selectable target chromaticity is between two vertices of the global common gamut; defining an inner region within the global common gamut; calculating a first directed distance between the selectable target chromaticity and the transition boundary of the inner region and a second directed distance between the selectable target chromaticity and a straight side of the global common gamut; and modifying the selectable target chromaticity to a modified target chromaticity within a light fixture gamut based at least in part on the calculated first and second directed distances; or generating an activation signal for driving the plurality of light sources based on the selectable target chromaticity based at least in part on the calculated first and second directed distances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.