Variable refresh rate flicker calculation methodology
US12211462B1 · kind B1 · utility
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14Claims
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Key dates
| Filing date | Jul 25, 2023 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Jul 25, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Described herein is a system and method for calculating variable refresh rate (VRR) flicker of a display used for information handling systems. VRR display data is provided to the display which generates a raw optical waveform. The raw optical waveform is captured by an optical sensor. The captured raw optical waveform is weighted using an inverse Fast Fourier Transform from a Temporal Contrast Sensitivity Function (TCSF). Calculating the flicker value of the weighted optical waveform over a defined moving window is performed. The flicker average and flicker maximum of the flicker value is used to determine a VRR flicker value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.