MULTI-TOUCH TOUCHSCREEN INCORPORATING PEN TRACKING
First Claim
1. A display panel for a multi-touch display system comprising:
- a waveguide panel;
a compliant layer adjacent to the waveguide panel;
a rear projection layer over the compliant layer and configured to provide a projection surface on which an image of display content is projected from behind the display panel and viewable from a front surface of the display panel; and
a location pattern provided on or in the rear projection layer being readable by a digital pen from the front surface of the display panel, the location pattern providing unique location indicia for the front surface of the display panel wherein unique locations in the location pattern are identifiable from corresponding portions of the unique location indicia.
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Accused Products
Abstract
The present invention relates to a multi-touch display system that supports both multi-touch human input as well as input from a digital pen. The display system has a display panel that is configured to allow human touches along a front surface to be detected and tracked. The display panel also includes a location pattern that preferably covers the viewable areas of the display panel. The location pattern is configured to allow any location within the location pattern to be detected by analyzing a portion of the display pattern that is associated with the particular location. The digital pen is used to “write” on the display panel, wherein such a writing function involves detecting the location where writing occurs and controlling display content that is displayed on the display panel to reflect what is being written.
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Citations
14 Claims
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1. A display panel for a multi-touch display system comprising:
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a waveguide panel; a compliant layer adjacent to the waveguide panel; a rear projection layer over the compliant layer and configured to provide a projection surface on which an image of display content is projected from behind the display panel and viewable from a front surface of the display panel; and a location pattern provided on or in the rear projection layer being readable by a digital pen from the front surface of the display panel, the location pattern providing unique location indicia for the front surface of the display panel wherein unique locations in the location pattern are identifiable from corresponding portions of the unique location indicia. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification