Split pixel high dynamic range sensor
US9571763B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2014 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Dec 17, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/778
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of reading out a pixel includes photogenerating charge carriers during a single integration time in photodetectors of each one of a plurality of sub-pixels included in the pixel. Each one of the plurality of sub-pixels of the pixel has a same color filter. A floating diffusion node of the pixel is reset. The floating diffusion node is sampled to generate a reset output sample signal. Charge carriers that were photogenerated in a first portion of the plurality of sub-pixels are transferred to the floating diffusion node. The floating diffusion node is sampled to generate a first output sample signal. Charge carriers that were photogenerated in a second portion of the plurality of sub-pixels are transferred to the floating diffusion node. The floating diffusion node is sampled to generate a second output sample signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.