Displays with mesopic vision compensation
US12334024B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2023 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Feb 15, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic device may include a display, an ambient light sensor, and control circuitry. The control circuitry may use a mesopic vision model to compensate images that are displayed in low light conditions when the measured ambient light brightness is below a threshold. The mesopic vision model may use a tone mapping process and a color mapping process to compensate for the reduced color sensitivity of the retina in low light conditions. The control circuitry may iteratively adjust weights associated with the tone mapping process and the color mapping process until a perceived (retinal) version of the compensated image in the measured ambient light conditions closely matches a perceived (retinal) version of the original image in reference ambient light conditions. The control circuitry may use a joint optimization process that balances the contrast and color of the compensated image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.