Non-contact input apparatus for computer peripheral and method of the same

摘要

A non-contact input apparatus for computer peripheral includes an induction module and a pointing module. The induction module includes an electric supply coil and an induction element, and the pointing module includes an energy coil and a non-linear element. The electric supply coil is used to send a first oscillation signal. The energy coil receives the first oscillation signal. The non-linear element converts the first oscillation signal to be a second oscillation signal having multiple higher harmonics. The induction element generates a control signal based on the second oscillation signal.

主权项

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.