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 graphic images, and...http://www.google.es/patents/US7289113?utm_source=gb-gplus-sharePatente US7289113 - Projection display system with pressure sensing at screen, and computer assisted alignment implemented by applying pressure at displayed calibration marks
Projection display system with pressure sensing at screen, and computer ...
