System for autofocusing a moving object
US7548269B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2005 |
| Grant date | Jun 16, 2009 |
| Priority date | — |
| Expiry date | Aug 21, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/635
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides an autofocus system for controlling the focus of a taking lens by specifying a subject to be autofocused within an AF area, which is part of the field of view of a camera, and automatically focusing on the subject, comprising: a target subject specifying device which specifies a target subject to be focused, a target subject movement detection device which detects the movement of the target subject specified by the target subject specifying device, within the field of view, and an AF-area altering device which alters the extent of the AF area to track the movement of the target subject detected by the target subject movement detection device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.