Method and device for recognizing a dual point user input on a touch based user input device
First Claim
Patent Images
1. A method comprising:
- obtaining a first position signal relating to a first position of a first user input on a touch screen user input device;
obtaining a second position signal relating to a second position of a second user input on the touch screen user input device, wherein the first user input precedes the second user input;
determining on the basis of said first position signal and said second position signal, the first and second position signals as;
dual point user inputs when a position change rate between the first and second positions exceeds a predetermined value; and
as single point user inputs when the position change rate between the first and second positions does not exceed the predetermined value, the first and second position signals for single point user inputs being determined as motion of the user touch input point on the touch screen input device when a transition from the first position signal to the second position signal is a continuous signal transition.
0 Assignments
0 Petitions
Accused Products
Abstract
A dual point user input is recognized on a touch based user input device that is only capable of outputting a single input position signal by forming or detecting a first position signal, preferably storing the position signal, forming or detecting a subsequent second position signal and determining if the second position has its source in a simultaneous dual point user input.
-
Citations
27 Claims
-
1. A method comprising:
-
obtaining a first position signal relating to a first position of a first user input on a touch screen user input device; obtaining a second position signal relating to a second position of a second user input on the touch screen user input device, wherein the first user input precedes the second user input; determining on the basis of said first position signal and said second position signal, the first and second position signals as; dual point user inputs when a position change rate between the first and second positions exceeds a predetermined value; and as single point user inputs when the position change rate between the first and second positions does not exceed the predetermined value, the first and second position signals for single point user inputs being determined as motion of the user touch input point on the touch screen input device when a transition from the first position signal to the second position signal is a continuous signal transition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A computer program product comprising program code means stored on a computer readable medium for carrying out the method of claim, when said program product is run on a computer.
-
20. An apparatus comprising,
an input connectable to a touch screen user input device to receive a first position signal and a second different successive position signal representing first and second different positions on said touch screen user input device, which a user has touched, a differentiator configured to detect time dependent transition properties between the first and second positions, a first evaluator configured to be responsive to said differentiator and configured to determine if the second position following the preceding first position is caused by a single point user input or by a dual point user input, wherein the first and second position signals are determined as dual point user input when a position change rate between the first and second positions exceeds a predetermined value, and wherein the first and second position signals are determined as single point user inputs when the position change rate between the first and second positions does not exceed the predetermined value, a second evaluator, configured to be responsive to said first evaluator, and configured to determine that the first and second position signals determined as single point user inputs represent motion of a single user touch input point on the touch screen user input device when a transition from the first position signal to the second position signal is a continuous signal transition.
-
23. An apparatus comprising,
an input connectable to a touch screen user input device to receive a first position signal and a second different successive position signal representing first and second different positions on said touch screen user input device, which a user has touched, means for detecting time dependent transition properties between the first and second positions, means for determining that the second position following the preceding first position is caused by a dual point user input, when a position change rate between the first and second positions exceeds a predetermined value, means for determining that the second position following the preceding first position is a single user touch input point on the touch screen user input device, when the position change rate between the first and second positions does not exceed the predetermined value and a transition from the first position signal to the second position signal is a continuous signal transition.
-
24. A method comprising:
-
obtaining a first position signal relating to a first position of a first user input on a touch screen user input device; obtaining a second position signal relating to a second position of a second user input on the touch screen user input device, wherein the first user input precedes the second user input; determining on the basis of said first position signal and said second position signal, the second position as; a) a dual point user input or b) a single point user input that is continuous with the first position or c) a new single point user input that is discontinuous with the first position by comparing the first and second position signals against criteria including a time based criterion relating to a time between the first and second position signals and a position based criterion relating to a difference between the first and second position signals.
-
-
25. A method comprising:
-
detecting dual point user inputs on a touch screen user input device; and controlling a zoom function in dependence a distance between a first position of a first one of the dual point user inputs and a second position of a second one of the dual point user inputs, wherein an increasing distance results in a zoom in and a decreasing distance results in a zoom out. - View Dependent Claims (26, 27)
-
Specification