Adaptive gamma control to suppress variable refresh rate flicker
US11908425B2 · kind B2 · utility
0Cited by
5References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 3, 2022 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Feb 3, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0435
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information handling system presents visual images at a display through a scalar that adjusts the visual images with a gamma lookup table selected from plural gamma lookup tables based upon a refresh rate of the display. As a graphics processor commands variable refresh rates, a blanking period is used to adjust the refresh rates and a gamma lookup table selection is applied during the blanking period to encourage uniform luminance. Each gamma lookup table is stored in a separate SRAM and input to a multiplexor that uses the refresh rate to select which gamma adjusted visual image is presented at the display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.