DUAL MODE TOUCH SYSTEMS
First Claim
Patent Images
1. An apparatus for detecting a pointer comprising:
- a waveguide;
a touch surface over said waveguide on which pointer contacts are to be made;
at least one reflecting device extending along a first side of said waveguide and touch surface, said reflecting device defining an optical path between the interior of said waveguide and a region of interest above said touch surface; and
at least one imaging device looking across said touch surface and into said waveguide, said at least one imaging device capturing images of said region of interest and within said waveguide including reflections from said reflecting device.
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Abstract
An apparatus for detecting a pointer includes a waveguide and a touch surface over the waveguide on which pointer contacts are to be made. At least one reflecting device extends along a first side of the waveguide and touch surface. The reflecting device defines an optical path between the interior of the waveguide and the region of interest above the touch surface. At least one imaging device looks across the touch surface and into the waveguide. The imaging device captures images of the region of interest and within the waveguide including reflections from the reflecting device.
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Citations
53 Claims
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1. An apparatus for detecting a pointer comprising:
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a waveguide; a touch surface over said waveguide on which pointer contacts are to be made; at least one reflecting device extending along a first side of said waveguide and touch surface, said reflecting device defining an optical path between the interior of said waveguide and a region of interest above said touch surface; and at least one imaging device looking across said touch surface and into said waveguide, said at least one imaging device capturing images of said region of interest and within said waveguide including reflections from said reflecting device. - 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, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. An apparatus for detecting a pointer comprising:
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a waveguide; a touch surface over said waveguide on which pointer contacts are to be made; at least one reflecting device extending along a first side of said waveguide and touch surface, said reflecting device defining an optical path between the interior of said waveguide and a region of interest above said touch surface; and at least one imaging device looking into said waveguide, said at least one imaging device capturing images within said waveguide including reflections from said reflecting device. - View Dependent Claims (49, 50, 51, 52, 53)
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Specification