Interactive input system with multi-angle reflector
First Claim
1. An interactive input system, comprising:
- a pointer input region;
a multi-angle reflecting structure located along a single side of the pointer input region and operable to reflect radiation from a pointer within the pointer input region from at least two surface locations of the multi-angle reflecting structure, wherein the at least two surface locations each have different respective angles;
an imaging system operable to capture within at least a portion of the pointer input region images of the reflected radiation located within a field of view of the imaging system; and
processing structure for determining the location of the pointer relative to the pointer input region based on the at least one image.
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Abstract
An interactive input system comprises a pointer input region; and a multi-angle reflecting structure located along a single side of the pointer input region and operable to reflect radiation from a pointer within the pointer input region from at least two surface locations of the multi-angle reflecting structure, wherein the at least two surface locations each have different respective angles. An imaging system is operable to capture within at least a portion of the pointer input region images of the reflected radiation located within a field of view of the imaging system. Processing structure is provided for determining the location of the pointer relative to the pointer input region based on the at least one image.
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Citations
25 Claims
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1. An interactive input system, comprising:
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a pointer input region; a multi-angle reflecting structure located along a single side of the pointer input region and operable to reflect radiation from a pointer within the pointer input region from at least two surface locations of the multi-angle reflecting structure, wherein the at least two surface locations each have different respective angles; an imaging system operable to capture within at least a portion of the pointer input region images of the reflected radiation located within a field of view of the imaging system; and processing structure for determining the location of the pointer relative to the pointer input region based on the at least one image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. In an interactive input system, a method of detecting the position of a pointer associated with a pointer input region, the method comprising:
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illuminating the pointer when applied to the pointer input region; reflecting along a single side of the pointer input region a first incident radiation signal received from the illuminated pointer; reflecting along the single side of the pointer input region a second incident radiation signal received from the illuminated pointer; acquiring an image of the reflected first and second incident radiation signals; and processing the acquired image to determine the position of the pointer relative to the pointer input region using triangulation. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. An interactive input system, comprising:
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a pointer input region; a multi-angle reflector located along a single side of the pointer input region and operable to reflect radiation received from an object associated with the pointer input region from at least two non-planar surfaces of the multi-angle reflector; and an imaging system operable to capture within at least a portion of the pointer input region images of the reflected radiation located within a field of view of the imaging system for determining the location of the object relative to the pointer input region. - View Dependent Claims (18, 19, 20, 21)
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22. An interactive input system, comprising:
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a pointer input region; a plurality of reflectors located along a single side of the pointer input region and operable to reflect radiation received from an object associated with the pointer input region from each of the plurality of reflectors, wherein each of the plurality of reflectors comprise a different shape; and an imaging system operable to capture within at least a portion of the pointer input region images of the reflected radiation located within a field of view of the imaging system for determining the location of the object relative to the pointer input region. - View Dependent Claims (23)
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24. An interactive input system, comprising:
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a pointer input region; a plurality of reflectors located along a single side of the pointer input region and operable to reflect radiation received from an object associated with the pointer input region from each of the plurality of reflectors, wherein each of the plurality of reflectors comprise a different angular orientation; and an imaging system operable to capture within at least a portion of the pointer input region images of the reflected radiation located within a field of view of the imaging system for determining the location of the object relative to the pointer input region. - View Dependent Claims (25)
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Specification