Apparatus and method for preventing a picture from being taken by flash photography
US6937163B2 · kind B2 · utility
9Cited by
6References
9Claims
0Family size
Inventors
Key dates
| Filing date | May 14, 2003 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | May 14, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/0175
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An apparatus and method for preventing a photographic image from being taken has a triggering mechanism which will generate a signal when detecting a light signal indicative of a camera flash. A flash unit is coupled to the triggering mechanism for generating a counteracting flash after receiving the signal generated by the triggering mechanism. By generating a counteracting flash a very short time after detecting the flash, the apparatus saturates an area of the camera's image field during the camera's exposure period. Thus the image in that area is obscured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.