Optical digitizer system with position-unique photoluminescent indicia
First Claim
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1. A digitizer system comprising:
- a substrate with position-unique photoluminescent indicia comprising a pattern of features that emit a plurality of wavelength combinations, the wavelength combinations uniquely defining local regions of the substrate;
a stylus comprising an optical image sensor configured to sense the photoluminescent indicia; and
,a processor configured to receive signals from the optical image sensor and provide location-specific positional signals based on the received signals.
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Abstract
A digitizer system includes a substrate with indicia having photoluminescent features that uniquely define local areas of the substrate. A sensor device, such as a stylus, may sense radiation emitted from the features, and a controller may determine therefrom the location of the stylus relative to the substrate.
89 Citations
59 Claims
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1. A digitizer system comprising:
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a substrate with position-unique photoluminescent indicia comprising a pattern of features that emit a plurality of wavelength combinations, the wavelength combinations uniquely defining local regions of the substrate; a stylus comprising an optical image sensor configured to sense the photoluminescent indicia; and
,a processor configured to receive signals from the optical image sensor and provide location-specific positional signals based on the received signals. - 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)
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- 39. A substrate having position-unique photoluminescent indicia, the indicia comprising a pattern of features that fluoresce in a plurality of wavelength combinations, the wavelength combinations uniquely defining local regions of the substrate.
Specification