Front-end pixel fixed pattern noise correction in imaging arrays having wide dynamic range
US9191598B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2011 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Sep 9, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/67
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Aspects describe front-end pixel fixed pattern noise correction in imaging arrays having wide dynamic range. A photosensor of a first pixel in a first row of an array is reset and a first reset level of the first pixel is measured. The array comprises a plurality of pixels arranged in rows and columns. In response to a result of the first reset level, a reset bus is altered. A feed-forward adjustment of the photosensor of the first pixel is performed to substantially remove fixed-pattern noise. An external readout from the photosensor can occur with substantially all the fixed-pattern noise removed. In some aspects, the adjustment is performed by a switched capacitor block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.