Method for processing signals from an imaging device, and associated device
US11272118B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2019 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Oct 7, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/771
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image device has an array of pixels, each pixel having a photosensitive area, a first storage node and a second storage node. A pixel is illuminated for a first period of time, and charge accumulated on the photosensitive area of the pixel during the first period of time is stored on the first storage node of the pixel. The pixel of the array is illuminated for a second period of time, and charge accumulated on the photosensitive area during the second period of time is stored on the second storage node of the pixel. A first signal is generated based on the charge stored on the first storage node, and a second signal is generated based on the charge stored on the second storage node. The first and second signals are combined using at least one subtraction operation having the first and second signals as operands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.