Image capturing device and method to perform autofocus
US10958821B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Oct 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image capturing device including: a lens; a lens driver configured to change a focus position by moving the lens; an image sensor configured to acquire an image signal from light having passed through the lens; a calculator configured to output a focus value determined by passing the image signal from the image sensor through a frequency filter; and a focus controller configured to control the lens driver to move the lens, based on focus values corresponding to focus positions of the lens. The focus controller may receive one or more focus values from the calculator when the lens is positioned at one or more focus positions among the focus positions, and estimate a focus value of another focus position among the focus positions based on the one or more focus positions and the one or more focus values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.