US Patent:
20160373644, Dec 22, 2016
Inventors:
- Santa Clara CA, US
Eiichi Funatsu - San Jose CA, US
Donghui Wu - Sunnyvale CA, US
Zheng Yang - San Jose CA, US
Xiao Xie - Santa Clara CA, US
International Classification:
H04N 5/232
H04N 5/378
H04N 5/243
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.