Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate
2006-05-30
2006-05-30
Mengistu, Amare (Department: 2673)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
Reexamination Certificate
active
07053887
ABSTRACT:
Disclosed are a method and a system for detecting multiple, simultaneous touches on a touch-sensitive screen of a computing device. The hardware that controls the touch screen performs two measurements to locate a touch location on the screen. If there is a single touch, then the two measurements are equal. A non-zero difference indicates multiple touches and is correlated with the spread of locations simultaneously touched on the screen. If the difference is greater than a set threshold, then an indication is given of multiple touches. The user is warned against multiple touches, and input from the screen is ignored as long as multiple touches are detected. For some embodiments, when multiple touches are detected, the invention also tries to indicate the boundary of the set of locations simultaneously touched. The boundary is used to interpolate the intended single touch from the locations of all the touches.
REFERENCES:
patent: 4819194 (1989-04-01), Koizumi et al.
patent: 4929934 (1990-05-01), Ueda et al.
patent: 5225636 (1993-07-01), Protheroe
patent: 5241139 (1993-08-01), Gungl et al.
patent: 5245139 (1993-09-01), Protheroe et al.
patent: 5283559 (1994-02-01), Kalendra et al.
patent: 5565894 (1996-10-01), Bates et al.
patent: 5764223 (1998-06-01), Chang et al.
patent: 5896126 (1999-04-01), Shieh
patent: 6181328 (2001-01-01), Shieh
patent: 6353193 (2002-03-01), Atwood et al.
patent: 6888537 (2005-05-01), Benson et al.
patent: 6943779 (2005-09-01), Satoh
patent: 2002/0075243 (2002-06-01), Newton
patent: 2003/0063073 (2003-04-01), Geaghan et al.
patent: 2003/0071797 (2003-04-01), Chang et al.
patent: 2003/0197689 (2003-10-01), May
patent: 2003/0222857 (2003-12-01), Abileah
patent: 2004/0001048 (2004-01-01), Kraus et al.
patent: 2004/0140993 (2004-07-01), Geaghan et al.
patent: 2004/0155871 (2004-08-01), Perskl et al.
patent: 2005/0012724 (2005-01-01), Kent
patent: 2005/0030291 (2005-02-01), Yanagisawa
patent: 2005/0104867 (2005-05-01), Westerman et al.
patent: 2005/0128190 (2005-06-01), Ryynanen
patent: 2005/0253818 (2005-11-01), Nettamo
Bamdad Samii, “Cartesian Coordinate System, Distance and Midpoint Formula,” 3 pages, 1997, retrieved from http://allchinfiles.com/cartesianexp.html on Aug. 12, 2004.
Kraus Mark Gerard
Nguyen Vu Xuan
Lee & Hayes PLLC
Mengistu Amare
Microsoft Corporation
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