Method and apparatus for presenting audio and visual information
US10523893B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 18, 2018 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | May 18, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/22
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for presenting audio and visual information to an audience by streaming, broadcast, live and recording presentations including a generally planar display screen, a light source directing light towards the display screen, a video camera oriented towards the display screen so as to image a lecturer through the display screen and a filter disposed between the display screen and the video camera. In one embodiment the light source emits light in predominately blue wavelengths and the filter blocks at least 85% of light at approximately the same wavelengths. Visual information may then be beneficially written by a lecturer on the display screen using a fluorescent marker pen. In operation an image output of the video camera is reversed in left-to-right orientation so that visual image information written by a lecturer onto the display screen is reversed from an orientation of this information viewed through the display screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.