Image sensor having nonlinear response
US8633996B2 · kind B2 · utility
6Cited by
2References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2009 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Nov 15, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8063
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In previously known imaging devices as in still and motion cameras, for example, image sensor signal response typically is linear as a function of intensity of incident light. Desirably, however, akin to the response of the human eye, response is sought to be nonlinear and, more particularly, essentially logarithmic. Preferred nonlinearity is realized in image sensor devices of the invention upon severely limiting the number of pixel states, combined with clustering of pixels into what may be termed as super-pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.