Patent ID: 8907661
Filing Date: 2014-12-09
Classification: G06F,H03K

Abstract:
1. An input apparatus comprising: a printed circuit board; at least one first magnet portion stationary relative to the printed circuit board; at least one second magnet portion movable relative to the printed circuit board; and at least one sensor for determining the positions of the movable magnet portion; wherein the at least one sensor is a coil applied to the printed circuit board, that the coil is associated with an oscillator the output signal of which has a frequency depending on the position of the movable second magnet portion relative to the at least one coil; wherein the coils are printed on the printed circuit board or are applied by etching; wherein the output signal of the oscillator is connected to a microprocessor; wherein the coils are printed on the printed circuit board or are applied by etching; and wherein the at least one stationary first magnet portion is applied on the side of the printed circuit board opposite the coils.