Presentation system, material presenting device, and photographing device for presentation
US7176881B2 · kind B2 · utility
22Cited by
7References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 2003 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Jun 3, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A presentation system comprises a display for setting a virtual screen, a pointing mark for operating a point on the display, a photographing device for photographing the pointing mark and the display, a displaying device for displaying a predetermined image or the photographed image photographed by the photographing device, and a control device. The control device calculates coordinates of the pointing mark on coordinates of the virtual screen and has a pointing function for synthesizing a predetermined point image at coordinates of the image on the displaying device, which correspond to the coordinates of the pointing mark.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.