Image sensor device having improved noise suppression capability and a method for supressing noise in an image sensor device
US7545418B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jul 17, 2006 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Aug 29, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor device is provided that has an uncovered imaging array of pixels and a covered global reference non-imaging array of pixels. The pixel samples of the global reference non-imaging array are used to remove noise from the pixel samples of the imaging array. The control signals and control lines that are used to sample the pixels of the imaging array are separate from and independent of the control signals and control lines that are used to sample the pixels of the global reference non-imaging array of pixels. For each row of pixels of the imaging array that is sampled, the same row of pixels of the global reference non-imaging array is sampled. The global reference row has no or very few offsets or variations to ensure that noise removal is performed effectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.