Auto focus device and a method therefor
US9395512B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2010 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | May 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an autofocus device, and to a method therefor, whereby the delay necessary for auto focus can be reduced according to circumstances and a clear image of a subject can be obtained in a timely fashion by suitably adjusting the precision and speed of autofocus, as auto focus settings are differently applied in accordance with the photography mode when autofocus is being implemented in a camera. To this end, the autofocus method according to an embodiment of the present invention comprises: a step of inputting a photography mode for a subject; a step of deciding which auto focus setting corresponds to the input photography mode; a step of determining the lens step with the highest focal value among lens steps set according to the distance of the subject and the lens on the basis of the auto focus setting decided upon; and a step of moving the lens to the determined lens step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.