Image-sensing devices and methods of operating the same
US9225922B2 · kind B2 · utility
7Cited by
9References
17Claims
0Family size
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Key dates
| Filing date | Jul 17, 2012 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Jun 28, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a method of operating an image sensor, a noise voltage of a floating diffusion region is sampled after a reset voltage is applied to the floating diffusion region. A storage region, in which a photo-charge is stored, is electrically connected to the floating diffusion region after sampling the noise voltage, and a demodulation voltage of the floating diffusion region is sampled after the storage region and the floating diffusion region are electrically-connected. A voltage is determined based on the noise voltage and the demodulation voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.