Image sensor with high dynamic range in down-sampling mode
US8022994B2 · kind B2 · utility
8Cited by
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17Claims
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Key dates
| Filing date | Aug 31, 2007 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Feb 3, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/583
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor has an array of photo-sensitive pixels and supports a line-by-line read out of rows. In a normal resolution each row has the same nominal gain and exposure time. In a down-sampling mode the exposure times of the rows are varied according to an alternating sequence having at least two different exposure times. During down-sampling, raw pixel data from rows with different exposure times is combined to simultaneously achieve down-sampling and a high dynamic range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.