TOUCH PANEL CONTROLLER, METHOD FOR CONTROLLING STYLUS PEN, STYLUS PEN, TOUCH PANEL, AND ELECTRONIC APPARATUS

摘要

The present invention changes a stylus pen drive pattern in response to a change made to the drive pattern of a touch panel controller in order to suppress the effect of noise. A touch panel controller (2) is provided with: a driver (5) for driving one of a first signal line (HL1-HLM) and a second signal line (VL1-VLM) by a first drive pattern; and a capacitance distribution calculation unit (9) for estimating a static-capacitance distribution from a plurality of time-series signals, each of which is outputted along the other of the first signal line (HL1-HLM) and the second signal line (VL1-VLM). In order to change the first drive pattern to a second drive pattern so as to reduce noise mixed into the result of estimating the static-capacitance distribution, the driver (5) applies a second sync signal representing the second drive pattern to the first signal line (HL1-HLM) and/or the second signal line (VL1-VLM).