Zoom tracking method and zoom camera
US10904445B2 · kind B2 · utility
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3References
3Claims
0Family size
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Key dates
| Filing date | Jun 27, 2017 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Jun 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/695
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A zoom tracking method performed by a control unit of a zoom camera includes operations (a) through (c). In operation (a), the control unit determines a focusing progress state at a time when a zooming start signal is received. In operation (b), the control unit narrows an estimated range of a subject distance or estimates the subject distance, according to the focusing progress state. In operation (c), the control unit performs focusing for a zoom magnification according to the narrowed estimated range or the estimated subject distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.