Teleconference system with visual display terminal
US5953053A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1998 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Sep 2, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A teleconference system including a display terminal composed of an image source, a plurality of optical elements, a display screen and a planar optical structure associated with an outermost surface of the display screen; a video camera positioned to receive a reflected image from the display screen and a transmission link to a distant teleconference system. The planar optical structure is formed integral the display screen, such as through molding, or the like, or alternatively affixed to the outermost surface of the display screen in the form of a coating, or a plastic of glass element. The planar optical structure includes a blazed grating, thereby providing for the transmission therethrough of a portion of light and the reflectance of a portion of light incident thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.