Patent ID: 8847886
Filing Date: 2014-09-30
Classification: G06F

Abstract:
1. A non-contact input apparatus for computer peripheral, comprising: an induction module, comprising: an electric supply coil for generating a first oscillation signal; and an induction element for generating a control signal based on a second oscillation signal; and a pointing module, comprising: an energy storage coil for receiving the first oscillation signal and generating an induction voltage in response to the first oscillation signal; and a non-linear element connected to the energy storage coil for clamping the induction voltage with a predetermined voltage swing to generate the second oscillation signal; wherein the first oscillation signal has a first frequency, the second oscillation signal has the first frequency and multiple higher harmonics of the first frequency, and the induction element is configured to filter the second oscillation signal to obtain a positioning signal and generate the control signal based on the positioning signal.