Patent ID: 8432299
Filing Date: 2013-04-30
Classification: A47L,D06F,H03K

Abstract:
1. An input panel for an electrical appliance with an outer shell structure which as such offers an outer surface for a user to input commands; several separate input sections which are located in the area of the outer surface and to which manually selectable input commands are assigned; an evaluation circuit for the generation of switch signals in conjunction with the input commands entered by manual selection of the input sections; whereby a signal sensor circuit is provided in the area of the respective input section, whereby the signal sensor circuit includes a receiver electrode and a modulation circuit, and whereby via the modulation circuit the input impedance of the receiver electrode is modulated in accordance with a specific pattern for the signal sensor circuit, wherein each signal sensor circuit has its own specific address code and/or can be addressed via their address code, and the selection of the input point can be registered via the evaluation circuit with the aid of feedback effects of the modulation of the input impedance of the signal sensor circuit.