Touch Identification for Multi-Touch Technology
4 Assignments
0 Petitions
Accused Products
Abstract
A first plurality of contact locations may be determined in view of a first scan of a touch-sensing surface and a second plurality of contact locations may be determined in view of a second scan of the touch-sensing surface. A number of total contact locations may be identified in view of the first plurality of contact locations and the second plurality of contact locations. Furthermore, a first correlation process may be performed when the number of total contact locations satisfies a threshold number and a second correlation process may be performed when the number of total contact locations does not satisfy the threshold number.
-
Citations
50 Claims
-
1-25. -25. (canceled)
-
26. A method comprising:
-
determining a first plurality of contact locations in view of a first scan of a touch-sensing surface; determining a second plurality of contact locations in view of a second scan of the touch-sensing surface; identifying a number of total contact locations in view of the first plurality of contact locations and the second plurality of contact locations; and performing a first correlation process when the number of total contact locations satisfies a threshold number and performing a second correlation process when the number of total contact locations does not satisfy the threshold number. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
-
-
35. A system comprising:
-
a touch-sensing surface; and a processor operatively coupled to the touch-sensing surface and to; determine a first plurality of contact locations in view of a first scan of the touch-sensing surface; determine a second plurality of contact locations in view of a second scan of the touch-sensing surface; identify a number of total contact locations in view of the first plurality of contact locations and the second plurality of contact locations; and perform a first correlation process or a second correlation process to correlate the first plurality of contact locations with the second plurality of contact locations in view of the number of total contact locations, wherein the first correlation process is performed if the number of total contact locations satisfies a threshold number and the second correlation process is performed if the number of total contact locations does not satisfy the threshold number. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43)
-
-
44. An apparatus comprising:
-
a touch controller associated with a touch-sensing surface; a processor coupled to the touch controller; and a memory coupled with the processor, wherein the memory comprises instructions which, when executed by the processor, cause the processor to perform operations comprising; determining a second plurality of contact locations in view of a second scan of the touch-sensing surface; identifying a number of total contact locations in view of the first plurality of contact locations and the second plurality of contact locations; and performing a first correlation process when the number of total contact locations satisfies a threshold number and performing the second correlation process when the number of total contact locations does not satisfy the threshold number. - View Dependent Claims (45)
-
-
46. The apparatus of apparatus 44, wherein the first correlation process is a least squares based process.
-
47. The apparatus of apparatus 44, wherein the second correlation process is a nearest neighbor based process.
-
48. The apparatus of apparatus 44, wherein the number of total contact locations comprises touch contacts that have moved from the first plurality of contact locations to a new location corresponding to the second plurality of contact locations after the first scan.
-
49. The apparatus of apparatus 44, wherein a computational power of the first correlation process is different than a computational power of the second correlation process.
-
50. The apparatus of apparatus 44, wherein the correlating of the first plurality of contact locations with the second plurality of contact locations comprises identifying a contact location associated with a touch contact from the first plurality of contact locations of the first scan with a contact location associated with the touch contact from the second plurality of contact locations of the second scan.
Specification