Method of driving an image sensor with blooming current
US8593550B2 · kind B2 · utility
7Cited by
1References
20Claims
0Family size
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Key dates
| Filing date | Nov 19, 2008 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Jan 31, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/1865
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
For driving an image sensor having a pixel with a transfer gate formed between a photo-detector and a floating diffusion region, a noise-reducing voltage is applied on the transfer gate during a first period of an integration mode. A blooming current voltage is applied on the transfer gate during a second period of the integration mode. A read voltage is applied on the transfer gate during a read mode after the integration mode. The read voltage has a higher magnitude than the blooming current voltage. With application of the noise-reducing voltage, noise is reduced and a dynamic range is extended for the image sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.