Image sensor with fast intra-frame focus
US9124823B2 · kind B2 · utility
6Cited by
2References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2013 |
| Grant date | Sep 1, 2015 |
| Priority date | — |
| Expiry date | Aug 25, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of focusing an image sensor includes scanning a first portion of an image frame from an image sensor a first time at a first rate to produce first focus data. A second portion of the image frame from the image sensor is scanned at a second rate to read image data from the second portion. The first rate is greater than the second rate. The first portion of the image frame is scanned a second time at the first rate to produce second focus data. The first focus data and the second focus data are compared, and the focus of a lens is adjusted in response to the comparison of the first focus data and the second focus data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.