Touchscreen Display With Plural Cameras
First Claim
Patent Images
1. A display system comprising:
- a planar display screen that extends in two dimensions;
plural cameras having fields of view that extend more orthogonal to than parallel to said display screen for viewing distal objects;
reflectors for redirecting touchscreen light from a direction along said display screen to a direction toward said cameras; and
a video processor for locating a 2D position relative to said display screen of an object proximate to said display screen as a function of images generated by said cameras in response to said touchscreen light.
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Accused Products
Abstract
A display system (AP1) has plural cameras (11L an d11R) having fields of view (31L and 31R) that extend more orthogonal to than parallel to a display screen (21) for viewing distal objects. Reflectors (33L and 33R) redirect touchscreen light (36) from a direction along the display screen to a direction toward the cameras. A video processor (19) locates a 2D position relative to the display screen of an object proximate to the display screen as a function of images generated by the cameras in response to the touchscreen light.
34 Citations
10 Claims
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1. A display system comprising:
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a planar display screen that extends in two dimensions; plural cameras having fields of view that extend more orthogonal to than parallel to said display screen for viewing distal objects; reflectors for redirecting touchscreen light from a direction along said display screen to a direction toward said cameras; and a video processor for locating a 2D position relative to said display screen of an object proximate to said display screen as a function of images generated by said cameras in response to said touchscreen light. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising:
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switching between a webcam mode and a touchscreen mode; in said webcam mode, imaging an object distal from a display screen using two or more cameras, and generating a video image of said object; and in said touchscreen mode, reflecting light traveling more parallel to than orthogonal to said display screen so that it is redirected to be more orthogonal to than parallel to said display screen so that it impinges on said cameras, and determining a position on a surface of said display screen contacted by an object as a function of said light impinging on said cameras. - View Dependent Claims (7, 8, 10)
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9. A method as recited in claim 9 further comprising:
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turning off infrared emitters when switching from said camera mode to said touchscreen mode; and turning on said emitters when switching from said touchscreen mode to said camera mode.
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Specification