Auto-focus apparatus based on pixel resolution and control method for the same
US6825883B1 · kind B1 · utility
3Cited by
5References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 3, 1999 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Aug 3, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/661
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In the auto-focus apparatus, a CPU controls an amount of shift of a focus lens system for each sampling when an AF evaluated value is sampled so that the amount of shift is changed according to a number of recording pixels in a CCD. Therefore, even if a CCD having a large number of pixels is utilized the apparatus can perform auto-focusing within a short time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.