Increasing dynamic range of digital pixels by utilizing polling during integration
US11134208B1 · kind B1 · utility
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20Claims
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Key dates
| Filing date | Nov 17, 2020 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Nov 17, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/767
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Digital circuitry is provided that periodically reads at least one bit of digital counters associated with pixels of an image sensor. When the read bit(s) of a particular digital counter decrease between subsequent reads, then the digital circuitry increments an overflow counter associated with the particular digital counter. The value of each of the overflow counters of the digital circuitry are used with the corresponding values of the digital counters to generate pixel values for a frame (also referred to as an image).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.