08035624 is referenced by 350 patents and cites 240 patents.

A self-contained interactive video display system. A projector projects a visual image onto a screen for displaying the visual image, wherein the projector projects the visual image onto a back side of the screen for presentation to a user on a front side of the screen. An illuminator illuminates an object near the front side of the screen. A camera detects interaction of an illuminated object with the visual image, wherein the screen is at least partially transparent to light detectable to the camera, allowing the camera to detect the illuminated object through the screen. A computer system directs the projector to change the visual image in response to the interaction.

Title
Computer vision based touch screen
Application Number
11/929947
Publication Number
8035624 (B2)
Application Date
October 30, 2007
Publication Date
October 11, 2011
Inventor
Helen Shaughnessy
Mountain View
CA, US
Joshua Zide
Santa Barbara
CA, US
Philip Gleckman
Boulder
CO, US
Matthew Bell
Palo Alto
CA, US
Agent
Knobbe Martens Olson & Bear
Assignee
Intellectual Ventures Holding 67
NV, US
IPC
G06F 3/042
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