MULTIPOINT TOUCHSCREEN
First Claim
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1. A digital signal processing method, comprising:
- receiving raw data, the raw data including values for each transparent capacitive sensing node of a touch screen;
filtering the raw data;
generating gradient data; and
calculating the boundaries for touch regions base on the gradient data; and
calculating the coordinates for each touch region.
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Abstract
A touch panel having a transparent capacitive sensing medium configured to detect multiple touches or near touches that occur at the same time and at distinct locations in the plane of the touch panel and to produce distinct signals representative of the location of the touches on the plane of the touch panel for each of the multiple touches is disclosed.
304 Citations
2 Claims
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1. A digital signal processing method, comprising:
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receiving raw data, the raw data including values for each transparent capacitive sensing node of a touch screen;
filtering the raw data;generating gradient data; and calculating the boundaries for touch regions base on the gradient data; and calculating the coordinates for each touch region. - View Dependent Claims (2)
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Specification