Patent ID: 8269746
Filing Date: 2012-09-18
Classification: G06F

Abstract:
1. A method comprising: detecting a signal at one or more of an array of infrared sensors associated with a touch panel; detecting a plurality of parameters of the signal, wherein at least a first parameter includes a shape of the signal that distinguishes a device from a plurality of devices within a proximity to the touch panel and at least a second parameter includes an intensity of the signal; using time division multiplexing, allocating a time period to the device such that the touch panel is configured to receive one or more data transmissions solely from the device during the time period; during the time period, determining a physical location of the device with respect to the touch panel and a distance between the device and the touch panel based at least in part on the shape of the signal and the intensity of the signal; detecting a gesture associated with movement of the device within the proximity to the touch panel; normalizing the gesture based at least in part on the physical location of the device and the distance between the device and the touch panel; and changing a display on the touch panel based at least in part on the normalized gesture.