Circuits and Methods for Tracking Multiple Objects Relative to a Touch-Sensitive Interface
First Claim
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1. An integrated circuit comprising:
- a processor configured to receive position data corresponding to positions of objects relative to a touch-sensitive interface, the processor configured to determine a first index point for the position data and a second index point of previous position data corresponding to previous positions of the objects relative to the touch-sensitive interface, the processor to align the first and second index points and to assign an index to link the positions of the objects to the previous positions based on distances between the objects in the position data relative to the previous position data.
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Abstract
An integrated circuit includes a processor configured to receive position data corresponding to positions of objects relative to a touch-sensitive interface. The processor is configured to determine a first index point for the position data and a second index point of previous position data corresponding to previous positions of the objects relative to the touch-sensitive interface. The processor aligns the first and second index points and assigns an index to link the positions of the objects to the previous positions based on distances between the objects in the position data relative to the previous position data.
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Citations
20 Claims
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1. An integrated circuit comprising:
a processor configured to receive position data corresponding to positions of objects relative to a touch-sensitive interface, the processor configured to determine a first index point for the position data and a second index point of previous position data corresponding to previous positions of the objects relative to the touch-sensitive interface, the processor to align the first and second index points and to assign an index to link the positions of the objects to the previous positions based on distances between the objects in the position data relative to the previous position data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of tracking multiple objects relative to a touch sensitive interface, the method comprising:
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determining a first center point among the multiple objects from first position data captured at a first time; determining a second center point among the multiple objects from second position data captured at a second time; transposing the second position data with the first position data based on the first center point and the second center point to form aligned position data; and assigning an index to relate the multiple objects of the first position data to the multiple objects of the second position data based on their relative distances within the aligned position data. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A system comprising:
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a touch-sensitive interface for receiving user input; and an integrated circuit coupled to the touch-sensitive interface, the integrated circuit comprising; an interface configurable to couple to the touch-sensitive interface; a sensor circuit coupled to the interface, the sensor circuit to sense a change in an electrical parameter corresponding to positions of multiple objects relative to the touch-sensitive interface and to generate position data corresponding to the positions of the multiple objects; and a processor coupled to the sensor circuit and configured to relate first position data from a first time and second position data from a second time to determine relative motion of the multiple objects, the processor to align a first center point of the first position data with a second center point of the second position data, to calculate distances between the multiple objects in the first and second position data, and to link the multiple objects in the second position data to the multiple objects in the first position data based on the distances. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification