Electronic device for controlling focus of lens and method for controlling the same
US10516820B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2018 |
| Grant date | Dec 24, 2019 |
| Priority date | — |
| Expiry date | Jun 28, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N17/002
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic device includes a camera and a processor. The processor is configured to: obtain a first image from the camera with respect to an external object, move a lens device depending on a specified amount of movement using a lens driver, obtain a second image corresponding to a position to which the lens device moves with respect to the external object, determine a first partial area of the first image corresponding to a specified portion of the external object, determine a second partial area of the second image corresponding to the first partial area based on the first partial area and the specified movement amount, determine a focus position with respect to the lens device based on a defocus difference between the first partial area and the second partial area and the specified movement amount, and move the lens device to the focus position using the lens driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.