Multiple fingers contact sensing method for emulating mouse buttons and mouse operations on a touch sensor pad
DCFirst Claim
1. A method for detecting the operative coupling of multiple fingers to a touch sensor involving the steps ofscanning the touch sensor to (a) identify a first maxima in a signal corresponding to a first finger, (b) identify a minima following the first maxima, (c) identify a second maxima in a signal corresponding to a second finger following said minima, andproviding an indication of the simultaneous presence of two fingers in response to identification of said first and second maxima.
8 Assignments
Litigations
0 Petitions
Accused Products
Abstract
Method and apparatus for detecting an operative coupling between one or more fingers or other appropriate objects and a touch pad includes processes for detection of multiple maxima with intermediate minima in appropriate sequences to emulate the operations of cursor control and button actuations in a pointing and control device.
-
Citations
31 Claims
-
1. A method for detecting the operative coupling of multiple fingers to a touch sensor involving the steps of
scanning the touch sensor to (a) identify a first maxima in a signal corresponding to a first finger, (b) identify a minima following the first maxima, (c) identify a second maxima in a signal corresponding to a second finger following said minima, and providing an indication of the simultaneous presence of two fingers in response to identification of said first and second maxima.
-
18. A touch sensor for detecting the operative coupling of multiple fingers comprising:
-
means for scanning the touch sensor to (a) identify a first maxima in a signal corresponding to a first finger, (b) identify a minima following the first maxima, and (c) identify a second maxima in a signal corresponding to a second finger following said minima, and means for providing an indication of the simultaneous presence of two fingers in response to identification of said first and second maxima. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
-
Specification