1
Trevor M Akitt, Neil Gordon Bullock, Gerald D Morrison: Illuminated bezel and touch system incorporating the same. Smart Technologies, Katten Muchin Rosenman, December 6, 2005: US06972401 (196 worldwide citation)

A passive touch system includes a touch surface and at least one source of backlight illumination projecting backlighting across the touch surface. At least two image sensors are associated with the touch surface and acquire images of the touch surface from different locations. A digital signal proc ...


2
Trevor M Akitt, Neil Gordon Bullock, Gerald D Morrison: Illuminated bezel and touch system incorporating the same. Katten Muchin Zavis Rosenman, August 5, 2004: US20040149892-A1

A passive touch system includes a touch surface and at least one source of backlight illumination projecting backlighting across the touch surface. At least two image sensors are associated with the touch surface and acquire images of the touch surface from different locations. A digital signal proc ...