Image sensor and offset-able reference voltage generator thereof
US7428015B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2004 |
| Grant date | Sep 23, 2008 |
| Priority date | — |
| Expiry date | Dec 26, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor and offset-able reference voltage generator thereof are provided. The image sensor comprises a plurality of pixels, an offset-able reference voltage generator and a pixel sampling circuit. The pixel senses light from an image and generate an image signal. The offset-able reference voltage generator provides a reference voltage having a voltage offset. The pixel sampling circuit is coupled to the pixels and the offset-able reference voltage generator to sample the image signal and generate a pixel signal according to the reference voltage. The voltage offset of the reference voltage is able to compensate for the offset voltage in the process of generating the pixel signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.