Method and apparatus providing analog row noise correction and hot pixel filtering
US8077227B2 · kind B2 · utility
2Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2008 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Oct 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/68
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging device and method for operating the device. The imaging device comprises a pixel array that comprises a plurality of imaging pixels and dark reference pixels arranged in columns and rows. The dark reference pixels produce a noise signal that is subtracted from a pixel signal produced by the imaging pixels to correct row noise. In addition, the imaging device may comprise a hot pixel filtering circuit that blocks the output from hot pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.