Image sensor with defective pixel address storage
US7027089B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2002 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | May 11, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Image sensors and methods to construct and use image sensors are disclosed. In an example, an image sensor includes a pixel array, a data store to store data transmitted from the pixel array, an image signal processing unit to perform signal processing on the output of the data store to improve the performance of the image sensor, a defective pixel address storage unit to store an address of a defective pixel by using a fuse blowing technology, a controller for receiving address information of the defective pixels from the defective pixel address storage unit and controlling the operation of the image sensor, and a defective pixel compensation unit for receiving the address information of the defective pixels from the defective pixel address storage unit, substituting data of the defective pixels with data of normal pixels around the defective pixels, and providing the substituted data to the image signal processing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.