TOUCH TRACKING ON A TOUCH SENSITIVE INTERFACE
First Claim
1. A method for tracking a plurality of touch points across frames of a touch sensitive input device, the method comprising:
- correlating each touch point on a first frame of the touch sensitive input device with a distinct touch point on a subsequent frame of the touch sensitive input device, wherein correlating is based on isolating the at least one distinct touch point by a search distance associated with each touch point on the first frame and a trajectory associated with each touch point on the first frame.
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Accused Products
Abstract
A method tracks a plurality of touch points across successive frames of a touch sensitive input device to determine a trajectory. Each touch point on a frame of a touch sensitive input device is correlated with another distinct touch point on a subsequent frame of the same touch sensitive input device. The correlation is based on examining in the subsequent frame an area surrounding each touch point on the previous frame. Touch points identified within this search area are prioritized based on a projected trajectory through the prior touch point based on historical data.
74 Citations
20 Claims
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1. A method for tracking a plurality of touch points across frames of a touch sensitive input device, the method comprising:
correlating each touch point on a first frame of the touch sensitive input device with a distinct touch point on a subsequent frame of the touch sensitive input device, wherein correlating is based on isolating the at least one distinct touch point by a search distance associated with each touch point on the first frame and a trajectory associated with each touch point on the first frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer-readable storage medium tangibly embodying a program of instructions executable by a machine wherein said program of instructions comprises a plurality of program codes for tracking a plurality of touch points across frames of a touch sensitive input device, said program of instructions comprising:
program code for correlating each touch point on a first frame of the touch sensitive input device with a distinct touch point on a subsequent frame of the touch sensitive input device, wherein correlating is based on isolating the at least one distinct touch point by a search distance associated with each touch point on the first frame and a trajectory associated with each touch point on the first frame. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A computer system for tracking a plurality of touch points across frames of a touch sensitive input device, the computer system comprising:
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a machine capable of executing instructions embodied as software; and a plurality of software portions, wherein one of said software portions is operable to correlate each touch point on a first frame of the touch sensitive input device with a distinct touch point on a subsequent frame of the touch sensitive input device, wherein correlating is based on isolating the at least one distinct touch point by a search distance associated with each touch point on the first frame and a trajectory associated with each touch point on the first frame. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification