Method for controlling flash timing of extension flash module
US9674416B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2015 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Nov 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/74
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method for controlling flash timing of an extension flash module cooperating with a mobile device to provide supplemental light. The method includes: detecting a specific event before a flashable time period, wherein the flashable time is a period from the time at which a last photo sensor row of a specific frame begins exposure to the time at which a first photo sensor row in the specific frame ends exposure, wherein the time period from when the specific event occurs to a flashable time in the flashable time period has a fixed length of time; and triggering a flash instruction after a delay time from when the specific event occurs, such that the flash timing of the extension flash module is in the flashable time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.