Precharged latched pixel cell for a time of flight 3D image sensor
US9313476B2 · kind B2 · utility
2Cited by
2References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 7, 2014 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Oct 26, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/254
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel cell includes a latch having an input terminal and an output terminal. The latch is coupled to provide a latched output signal at the output terminal responsive to the input terminal. A first precharge circuit is coupled to precharge the input terminal of the latch to a first level during a reset of the pixel cell. A single photon avalanche photodiode (SPAD) is coupled to provide a SPAD signal to the input terminal of the latch in response to a detection of a photon incident on the SPAD.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.