Method for detecting position of input devices on a screen using infrared light emission
First Claim
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1. A sensor pad assembly for detecting and tracking inputs to an electronic system, including:
- a sensor pad having an upper surface and peripheral edges;
at least one input device adapted to interact with said sensor pad, said at least one input device having an emitter for outputting a first signal;
a plurality of sensors secured to said sensor pad and adapted to receive said first signal;
signal detection means for detecting said first signal and identifying said at least one device;
said signal detection means further determining the position of said at least one input device on said sensor pad and generating a corresponding position signal.
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Abstract
A system for using IR light emitted from a wireless input device for the purpose of locating and tracking the device on a transparent sensor pad associated with an electronic display screen. The sensor pad incorporates embedded photo-sensors at the edges of the pad for detecting, identifying, and locating the input device. The input device may be powered by EM field, or light emitted by the display screen.
38 Citations
28 Claims
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1. A sensor pad assembly for detecting and tracking inputs to an electronic system, including:
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a sensor pad having an upper surface and peripheral edges; at least one input device adapted to interact with said sensor pad, said at least one input device having an emitter for outputting a first signal; a plurality of sensors secured to said sensor pad and adapted to receive said first signal; signal detection means for detecting said first signal and identifying said at least one device; said signal detection means further determining the position of said at least one input device on said sensor pad and generating a corresponding position signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification