System and method for data selection by means of a touch-sensitive surface
First Claim
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1. A computer-implemented method for data selection by means of a touch-sensitive surface, the method comprising:
- sensing a first touch position on the touch-sensitive surface;
tracking a movement from the first touch position to a second touch position;
calculating at least one geometric parameter from the first touch position, the second touch position and a reference position; and
effecting a data selection within a data range in dependence on the geometric parameter,wherein calculating of the at least one geometric parameter comprises;
calculating a first distance from the reference position to the first touch position, and a second distance from the reference position to the second touch position; and
calculating a relationship between the first distance and the second distance, wherein calculating of the relationship comprises calculating a difference between the first distance and the second distance,wherein the method further comprises;
setting a step width in dependence on the calculated relationship of the first distance and the second distance,wherein the data selection is effected with the set step width being taken into account, andwherein the setting of the step width comprises;
determining whether the difference of the distances produces a positive or a negative value; and
changing the step width in dependence on the positive or negative value of the difference.
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Abstract
A data selection system and a method for data selection by means of a touch-sensitive surface are disclosed. The method comprises sensing a first touch position on the touch-sensitive surface and tracking a movement from the first touch position to a second touch position. The method additionally comprises calculating at least one geometric parameter from the first touch position, the second touch position and a reference position, and effecting a data selection within a data range in dependence on the geometric parameter.
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Citations
15 Claims
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1. A computer-implemented method for data selection by means of a touch-sensitive surface, the method comprising:
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sensing a first touch position on the touch-sensitive surface; tracking a movement from the first touch position to a second touch position; calculating at least one geometric parameter from the first touch position, the second touch position and a reference position; and effecting a data selection within a data range in dependence on the geometric parameter, wherein calculating of the at least one geometric parameter comprises; calculating a first distance from the reference position to the first touch position, and a second distance from the reference position to the second touch position; and calculating a relationship between the first distance and the second distance, wherein calculating of the relationship comprises calculating a difference between the first distance and the second distance, wherein the method further comprises; setting a step width in dependence on the calculated relationship of the first distance and the second distance, wherein the data selection is effected with the set step width being taken into account, and wherein the setting of the step width comprises; determining whether the difference of the distances produces a positive or a negative value; and changing the step width in dependence on the positive or negative value of the difference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification