Method and apparatus to minimize flicker effects from a discharge light source during digital video capture
US6519002B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1998 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Aug 31, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method having the step of setting a programmable clock to a first frequency; capturing a first set of frames at the first frequency; and then determining a first standard deviation of a first set of average intensities for the first set of frames. In addition, the method also includes the steps of setting the programmable clock to a second frequency; capturing a second set of frames at the second frequency; and determining a second standard deviation of a second set of average intensities for the second set of frames. Then, comparing the first standard deviation with the second standard deviation; and, setting the programmable clock based on the comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.