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US 7812828

How Touchscreens Use Math to Recognize Your Fingers

Apple's patent on using mathematical ellipses to track and identify individual fingers and palms on a touch-sensitive surface.

Statusactive

Granted2010

Expires2027

Claims38

Forward citations93

Prior art285

AssigneeApple Inc

InventorsWayne Westerman, John G. Elias

Patent B

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