Patent ID: 9031510
Filing Date: 2015-05-12
Classification: H03K,H04B

Abstract:
1. A control apparatus of a capacitive touch sensor comprising: a capacitive sensor; a radio receiver that receives a radio broadcast at a radio receiving frequency; a setting unit that sets a sensing frequency corresponding to the radio receiving frequency of the radio receiver; a charge control unit that controls a switching unit to perform a switching operation at the sensing frequency set by the setting unit in order to charge and discharge an electrostatic capacitance generated at the capacitive sensor; and a first measuring unit that measures a field intensity level before the charge control unit controls the switching unit to perform the switching operation and measures a field intensity level after the charge control unit controls the switching unit to perform the switching operation, wherein the capacitive sensor detects an approach manipulation to a manipulation panel or a touch manipulation on the manipulation panel, and the setting unit sets the sensing frequency corresponding to a difference between the field intensity level measured before the switching operation by the first measuring unit and the field intensity level measured after the switching operation by the first measuring unit.