Multi-touch touchscreen incorporating pen tracking
First Claim
1. A multi-touch display system comprising:
- a display panel comprising a front surface to receive human touches and a location pattern provided in association with the front surface, the location pattern readable by a digital pen from the front surface and providing unique location indicia for the front surface wherein unique locations in the location pattern are identifiable from corresponding portions of the unique location indicia, and wherein a unique identifier of the display panel is encoded in the location pattern;
touch sensing circuitry adapted to detect the human touches on the front surface of the display panel and provide corresponding touch input;
a communication interface adapted to receive pen data bearing on writing information derived in response to the digital pen capturing images of those portions of the unique location indicia where the digital pen is being used to write; and
processing circuitry associated with the touch sensing circuitry and the communication interface and adapted to control display content being displayed on the display panel in response to the touch input and the pen data.
9 Assignments
0 Petitions
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.
-
Citations
28 Claims
-
1. A multi-touch display system comprising:
-
a display panel comprising a front surface to receive human touches and a location pattern provided in association with the front surface, the location pattern readable by a digital pen from the front surface and providing unique location indicia for the front surface wherein unique locations in the location pattern are identifiable from corresponding portions of the unique location indicia, and wherein a unique identifier of the display panel is encoded in the location pattern; touch sensing circuitry adapted to detect the human touches on the front surface of the display panel and provide corresponding touch input; a communication interface adapted to receive pen data bearing on writing information derived in response to the digital pen capturing images of those portions of the unique location indicia where the digital pen is being used to write; and processing circuitry associated with the touch sensing circuitry and the communication interface and adapted to control display content being displayed on the display panel in response to the touch input and the pen data. - 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. A multi-touch display system comprising:
-
a display panel comprising a front surface to receive human touches and a location pattern provided in association with the front surface, the location pattern readable by a digital pen from the front surface and providing unique location indicia for the front surface wherein unique locations in the location pattern are identifiable from corresponding portions of the unique location indicia; touch sensing circuitry adapted to detect the human touches on the front surface of the display panel and provide corresponding touch input; a communication interface adapted to receive pen data bearing on writing information derived in response to the digital pen capturing images of those portions of the unique location indicia where the digital pen is being used to write; and processing circuitry associated with the touch sensing circuitry and the communication interface and adapted to control display content being displayed on the display panel in response to the touch input and the pen data, wherein to detect the human touches on the front surface of the display panel, the touch sensing circuitry is adapted to detect reflected light that is reflected from a rear surface of the display panel in response to the human touches; wherein the display panel comprises a waveguide panel and a light source adapted to inject light into the waveguide panel such that a state of total internal reflection is achieved within the waveguide panel when the front surface of the display panel is not being touched by a human and frustrated total internal reflections occur when the front surface of the display panel receives the human touches, certain of the frustrated total internal reflections being reflected light that is detectable by the touch sensing circuitry; wherein the waveguide panel comprises a beveled perimeter edge that has a substantially flat edge surface on which the light source is mounted, the light source injecting the light into the waveguide panel through the substantially flat edge surface; and wherein an angle formed between the substantially flat edge surface and the front surface is between about 30 degrees and 60 degrees. - View Dependent Claims (28)
-
Specification