Patent ID: 8723791

Claim:
A computer-implemented interactive display method comprising: providing an interactive display surface having one or more computer generated patterns imprinted thereon, each of the patterns comprising one or more decodable algorithmic themes; identifying an absolute position of an electronic pen relative to the interactive display surface, the electronic pen having an infrared camera for reading the computer generated patterns upon the interactive display surface and a processor for decoding the patterns read by the infrared camera upon the interactive display surface, wherein the decoded patterns indicate the absolute position of the electronic pen with respect to the interactive display surface; wherein the interactive display surface comprises a front surface having a magnetic adhesive for releasably attaching the front surface of the interactive display surface to a substantially transparent anti-reflective protective layer; transmitting, in real time, the absolute position of the electronic pen to a computer system in communication with the electronic pen; superimposing a visual output of the computer system upon the interactive display surface using one or more rear projectors; and controlling one or more programs running on the computer system using the electronic pen in conjunction with the interactive display surface.