U-Shin Ltd.

Izumi Dohi

Kazuyuki Fukushima

Osamu Michihira

Takuji Oka

Makoto Tanaka

Tsuneo Kudou

Takashi Fujita

A technique reduces erroneous judgment due to effects of noise accompanying PWM control while using PWM control for brightness adjustment of light-emitting diodes disposed proximate of an electrode. An electrode is disposed proximate of operating portions that are subject to touch operations by unit of a conductive body. An operating portion of a light-emitting diode is lightened. A CPU performs brightness adjustment of the light-emitting diode through PWM control. A detecting circuit outputs detected values in accordance with electrostatic capacitances of the electrode. The CPU judges that a touch operation has been made when a difference between a detected value of the detecting circuit and a reference value stored in a RAM is not less than a prescribed value. The CPU stores a detected value that is first detected by the detecting circuit after transition of an executing state of PWM control in the RAM as a reference value.

Touch switch and control panel

Techniques reduce erroneous judgment due to effects of noise accompanying PWM control. LEDs light operating portions and function as indicators. Circuitry adjusts brightness of the LEDs through PWM control. A detecting circuit outputs detected values in accordance with electrostatic capacitances of the electrode. A CPU senses a touch operation when a difference between a detected value of the detecting circuit and a reference value is more than a prescribed value. The CPU stores a detected value as a reference value which is the first value detected by the detecting circuit after the PWM control execution state of the LEDs has been changed or the first value that is detected by the detecting circuit, which is comprised by a touch switch that is in a specified positional relationship with respect to the touch switch which executing state of PWM control of the LEDs has changed, after transition of the executing state.

Control panel

A power steering lock apparatus provides high reliability and can be actuated using minimal control parts. In a power steering lock apparatus including a lock bolt, an actuator, an actuator driving part, position detecting part, and a slave control part, and being structured such that the slave control part executes a control in accordance with a control signal output by a host control part, the host control part outputs an integrity confirmation code signal to the slave control part, the slave control part executes a computing process by using the input integrity confirmation code signal as a parameter, and outputs a result of computation as an integrity confirmation information to the host control part, and the host control part outputs an engine start signal when the host control part determines that the slave control part is normally activated, and the lock bolt indicates an unlock position state.

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Hiroshima, Japan

Izumi Dohi