Patent ID: 9128546
Filing Date: 2015-09-08
Classification: G06F

Abstract:
1. A touch panel controller comprising: a driving portion for driving a plurality of status signal generating portions at a predetermined frame rate each of which generates a status signal indicative of a close status of an indicator to an assigned detecting region; a position calculating portion for processing the status signal output from each of the status signal generating portions, at the frame rate, thereby calculating a position of the indicator on a detecting surface constituted by a combination of detecting regions; and a region setting portion for setting a first effective region including an estimated moving range of the indicator obtained by multiplying a moving speed of the indicator by a reciprocal of the frame rate based on the position of the indicator calculated by the position calculating portion, and setting a second effective region which is the whole detecting surface when the position calculating portion does not calculate the position of the indicator, wherein when the region setting portion sets the first effective region, the touch panel controller carrying out at least one of: a first operation for causing the driving portion to selectively drive the status signal generating portion in which at least a part of the assigned detecting region is included in the first effective region, thereby generating the status signal selectively; and a second operation for causing the position calculating portion to selectively process the status signal generated by the status signal generating portion in which at least a part of the assigned detecting region is included in the first effective region.