POINTER DISPLACEMENT CALCULATION METHOD OF A POINTING DEVICE USING A TOUCH SENSOR CAPABLE OF REMOVING ERRORS OF POINTER DISPLACEMENT

摘要

PURPOSE: A pointer displacement calculation method of a pointing device using a touch sensor is provided to output the point displacement of high resolution by outputting the pointer displacement based on a coordinate of a connecting point which is accurately calculated.;CONSTITUTION: A touch sensor value outputted from touch sensors is gradually read in fixed time(S10). The corrected touch sensor values are gradually outputted by reducing offset in the touch sensor value(S20). When the corrected touch sensor value is greater than a reference value, an activated connecting signal is outputted for determining the connection of a connection target(S30). The offset is updated by determining the corrected touch sensor values when the connecting signal is inactivated(S40). When the connecting signal is activated, a connecting point coordinate is gradually calculated by the corrected sensor value(S50).;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Start; (BB) End; (S10) Touch sensor outputting step; (S100) Previous accumulated change amount calculating step; (S20) Offset removing step; (S30) Contact signal outputting step; (S40) Offset updating step; (S50) Contact point coordinate calculating step; (S60) Coordinate change amount calculating and correcting step; (S70) Coordinate change amount delaying and correcting step; (S80) Accumulated change amount storing step; (S90) Point displacement calculating step;