Visible pointer tracking with separately detectable pointer tracking signal
First Claim
Patent Images
1. A pointer device, comprising:
- a visible spectrum source to produce visible emissions;
a non-visible spectrum source to produce emissions outside the visible spectrum;
optics for outputting, in alignment, said visible emissions and said emissions outside the visible spectrum.
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Abstract
The invention concerns pointer tracking using a signal possessing an optical characteristic that is separately detectable from a projected display. An area of the projected display is sensed. Sensing is conducted with filtering for the separately detected optical characteristic.
61 Citations
56 Claims
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1. A pointer device, comprising:
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a visible spectrum source to produce visible emissions;
a non-visible spectrum source to produce emissions outside the visible spectrum;
optics for outputting, in alignment, said visible emissions and said emissions outside the visible spectrum. - 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)
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27. A pointer device, comprising:
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a first visible wavelength source to produce emissions in a first range of wavelengths in the visible spectrum;
a second wavelength source to produce emission in a second range of wavelengths different than said first range of wavelengths; and
optics to align and output emissions from said first visible wavelength source and said second wavelength source. - View Dependent Claims (28, 29, 30, 31, 32)
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33. A method of detecting a pointer signal used with a projected display, the method comprising steps of:
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providing a pointer tracking signal possessing an optical characteristic that is separately detectable from the projected display; and
sensing an area of the projected display while filtering for said optical characteristic. - View Dependent Claims (34, 35)
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36. A method of detecting a pointer signal used with a projected display, the method comprising steps of:
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providing a pointer tracking signal distinguished from the projected display by an optical characteristic unmistakable as an element of the projected display;
sensing an area of the projected display while filtering for said optical characteristic unmistakable as an element of the projected display. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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54. A pointer device, comprising:
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means for projecting a visible pointer; and
means for projecting, with the visible pointer, a pointer tracking signal that is separately detectable by an image sensor. - View Dependent Claims (55, 56)
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Specification