Integrating pixels and methods of operation
US9686490B2 · kind B2 · utility
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2References
12Claims
0Family size
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Key dates
| Filing date | Apr 1, 2014 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Apr 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/771
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel cell includes a first integration capacitor, a second integration capacitor, a photo detector and a transistor. The first integration capacitor includes a first lead operatively coupled to the photo detector. The second integration capacitor includes a first lead. The transistor is operatively coupled between the leads of the first and second integration capacitors for enabling current flow between the photo detector and the second integration capacitor only once a threshold voltage is met on the first integration capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.