Projection display and system with pressure sensing at screen, and computer assisted alignment implemented by applying pressure at displayed calibration marks
US6747636B2 · kind B2 · utility
204Cited by
36References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2001 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Nov 21, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/1831
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An interactive display system comprising a touch sensitive display surface for sensing pressure applied thereto and in response generating control signals indicating locations of the applied pressure, a personal computer for receiving the control signals and in response generating graph images, and an LCD panel in combination with an overhead projector for receiving and projecting the graphic images onto the touch sensitive display surface at the indicated locations. The LCD panel and overhead projector may be provided an an integral unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.