Patent · US Active

Multi-finger detection and component resolution

US8913019B2 · kind B2 · utility

12Cited by

37References

20Claims

0Family size

Assignee

Microsoft Corporation · US

Inventors

Weidong Zhao · Bellevue, US
David A. Stevens · Sammamish, US
Aleksandar Uzelac · Sjenica, RS

Key dates

Filing date	Jul 14, 2011
Grant date	Dec 16, 2014
Priority date	—
Expiry date	Jan 9, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG06F2203/04104
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

In embodiments of multi-finger detection and component resolution, touch input sensor data is recognized as a component of a multi-finger gesture on a touch-screen display. An ellipse is determined that approximately encompasses the component, and the ellipse has a primary axis and a secondary axis that are orthogonal. A distribution is then generated that projects sensor data elements from the primary axis based on detected intensity of the touch input sensor data. A histogram function can then be generated based on the distribution, where the histogram function indicates individual contacts of the component and separation of the individual contacts.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.