Autofocusing apparatus of camera and autofocusing method thereof
US7536097B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 2006 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | May 28, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/675
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to autofocusing apparatus of a camera. The autofocusing apparatus of a camera includes a lens section on which a light signal is incident; an image sensor and ISP section that receives the light signal incident on the lens section so as to convert into an electrical signal and then outputs digitalized image data; an autofocus DSP that receives the image data from the image sensor and ISP section so as to extract predetermined image components, divides the central region of a picture into N regions (N is an integer larger than two), calculates a focus value for each region by integrating the predetermined image components, and calculates the maximum value while moving the focus lens of the lens section in the up and down direction in accordance with the focus value calculated for each region; and a driving section that drives the focus lens of the lens section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.