Calibration of an optical touch-sensitive display device
AssigneeMicrosoft Corporation
InventorsNigel Keam, Prafulla Masalkar
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Abstract
Embodiments related to the calibration of an optical touch-sensitive display device are disclosed. For example, one disclosed embodiment comprises a method of calibrating an image sensor, wherein the method comprises placing a photoluminescent panel over the display surface, and illuminating a target location on the display surface with visible light. Infrared light that is emitted by the panel in response to the illumination of the display surface is received via the image sensor. The received light then is used to calibrate the device.
Claims20
In an optical touch-sensitive display device comprising an image sensor and a display surface, a method of calibrating the display device, the method comprising:
- placing a photoluminescent panel over the display surface;
- illuminating a target location on the display surface with visible light;
- receiving via the image sensor infrared light emitted by the photoluminescent panel in response to illuminating the target location;
- and
- calibrating the display device via the infrared light received.
In an optical touch-sensitive display device comprising an optical touch-sensitive surface, a method of calibrating an image sensor, the method comprising:
- placing a photoluminescent panel over the optical touch-sensitive surface;
- illuminating a first target location on the optical touch-sensitive surface with visible light;
- receiving via the image sensor infrared light emitted from the photoluminescent panel in response to illuminating the first target location;
- illuminating a second target location on the optical touch-sensitive surface with visible light;
- receiving via the image sensor infrared light emitted from the photoluminescent panel in response to illuminating the second target location;
- and
- calibrating the optical touch-sensitive device via the infrared light received.
An optical touch-sensitive display device, comprising:
- a display surface;
- an image source configured to produce an image viewable on the display surface;
- an image sensor configured to acquire an infrared image of the display surface;
- a logic subsystem;
- and
- memory comprising instructions executable by the logic subsystem to calibrate the optical touch-sensitive device by illuminating a target location on the display surface with visible light and receiving via the image sensor infrared light emitted in response to illuminating the target location.
Dependencies are inferred from the claim text.