Multi-photodiode pixel cell
US10923523B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2019 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | Apr 15, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In one example, an apparatus comprises: a first photodiode configured to convert a first component of light to a first charge, second photodiode configured to convert a second component of the light to a second charge; and an interface circuit configured to: perform a first quantization and a second quantization of the first charge to generate, respectively, a first result and a second result, the first quantization and the second quantization being associated with different light intensity ranges; provide one of the first result or the second result to represent an intensity of the first component of a pixel; perform the first quantization and the second quantization of the second charge to generate, respectively, a third result and a fourth result; and provide one of the third result or the fourth result to represent an intensity of the second component of the pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.