Image sensor for detecting flicker noise and method thereof
US7420595B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2004 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Oct 9, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/73
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor has improved functions so as to automatically eliminate a flicker noise. For the purpose, the image sensor includes a pixel array for capturing information about an image provided from the outside and having N pixel rows and M pixel columns for maximizing a feature of reacting to light, wherein M and N are integers, respectively, a flicker noise detective pixel unit containing X pixel rows, which has a form extended from the N pixel rows of the pixel array, and M pixel columns, wherein each pair of X pixel rows has an identical exposure time and X is an even number, and a flicker noise for controlling an exposure point for the flicker noise detective pixel unit and detecting the flicker noise by using outputs of the flicker noise detective pixel unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.