Patent ID: 8093534

Claim:
A cooking device comprising: a main body serving as housing; a top plate provided on an upper surface of the main body; a heating section operable to heat an object to be heated; capacitance-type touch switches, each of which includes a key electrode provided on a back surface of the top plate; and a control unit operable to detect capacitances formed between the key electrodes and a ground, the control unit determining that the key electrode is pushed to input a control command assigned to the pushed key electrode, when detecting, for a time equal to or more than a first predetermined time, that the capacitance of any of the key electrodes is increased by an amount equal to or more than a first predetermined amount based on a value set as a reference capacitance of the key electrodes; wherein the cooking device further comprises a cancel electrode located near the key electrodes and between a position at which the heating section is placed and a position at which the key electrodes are placed, the control unit detects a capacitance formed between the cancel electrode and the ground, when the control unit continuously detects, for a time equal to or more than a second predetermined time but less than a third predetermined time, that the capacitance of the cancel electrode is increased by an amount equal to or more than a second predetermined amount based on a value set as a reference capacitance of the cancel electrode, the control unit prohibits execution of a control command assigned to a key electrode even if determining that the key electrodes is pushed, and when the control unit continuously detects, for a time equal to or more than the third predetermined time, that the capacitance of the cancel electrode is increased by an amount equal to or more than the second predetermined amount from the reference capacitance of the cancel electrode, the control unit executes a control command assigned to a key electrode if determining that the key electrode is pushed.