Auto focus control apparatus and continuous auto focus control method
US9146446B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2013 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Dec 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an auto focus control apparatus and a continuous auto focus control method. In accordance with an embodiment of the present invention, an auto focus control apparatus including: a focal value calculation unit for calculating a focal value from a signal of an image frame; a focus lens driving unit for moving a focus lens to a desired position; and a control unit for determining position movement of a subject based on the focal value calculated by the focal value calculation unit, executing pre-scan according to the movement of the focus lens by controlling the focus lens driving unit to move the focus lens at set frame intervals when the position of the subject is moved, and skipping a lens moving frame corresponding to the time when the focus lens moves during the pre-scan is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.