Patent ID: 8669967
Filing Date: 2014-03-11
Classification: G06F

Abstract:
1. A method for operating a digitizer with a stylus wherein the digitizer includes a grid based digitizer sensor including conductive lines arrayed along a first and second axis of the digitizer sensor, the method comprising: triggering at a defined time within a refresh cycle of the digitizer at least a portion of the conductive lines with a triggering signal; detecting finger touch interaction with the digitizer during the refresh cycle in response to the triggering; transmitting a signal burst with the stylus at a defined rate in accordance with a transmission repeat cycle of the stylus, wherein the duration of the transmission repeat cycle is predefined and known to the digitizer; sensing the signal burst of the stylus with the digitizer sensor during the refresh cycle; determining a time within the refresh cycle of the digitizer at which the digitizer sensor sensed the signal burst transmitted by the stylus; and synchronizing the triggering of the at least a portion of the conductive lines in subsequent refresh cycles of the digitizer with the time within the refresh cycle of the digitizer at which the digitizer sensor sensed the signal burst transmitted by the stylus.