Patent ID: 6696987
Filing Date: 2004-02-24
Classification: H03K

Abstract:
An electronic device, comprising:a microprocessor; operating buttons, each of the operating buttons having a light source and a light receiver arrangement, each of the light sources being supplied with cyclical control pulses in succession controlled by the microprocessor, each of the light receiver arrangements providing an optical connection between one of the operating buttons and the respective light source and including a fiber-optic cable leading away from the one of the operating buttons, the optical connection being alterable by operation of the one of the operating buttons, the microprocessor being configured to allocate output signals of the light receiver arrangements to the cyclical control pulses, the operating buttons being displaceable for operation; and a fiber-optic segment connected to the operating buttons for continuous reception of a light component of the light source, displacement of the one of the operating buttons displacing the fiber-optic segment relative to the fiber-optic cable.