Image sensor readout method and apparatus
US9087756B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2012 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Mar 31, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/645
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel readout circuit including at least first, second and third memory locations. During an integration period of a pixel, the pixel readout circuit repeatedly samples the pixel output level during the integration period, stores the first sample in the first memory location, and stores each subsequent sample in memory locations other than the first memory location. Each sample is stored with a time corresponding to when that sample was taken, such that at any one time subsequent to the first three samples having been stored, at least the first sample and the two most recent samples are stored. Also disclosed is a corresponding method of reading out of a pixel output over an undefined integration period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.