Patent ID: 7856220

Claim:
A magneto-electric-induction conversion system of a wireless input device, comprising: an emitter, comprising: an oscillation circuit, for generating an oscillation signal by oscillating at a specific frequency; a first phase-inverting circuit, connected to the oscillation circuit in series, for inverting the oscillation signal and outputting a first alternating current (AC) signal having a first phase; a second phase-inverting circuit, connected to the first phase-inverting circuit in series, for inverting the first AC signal and outputting a second AC signal having a second phase; and at least two serially-connected resonant circuits, arranged side by side, wherein each of the serially-connected resonant circuits is connected to the second phase-inverting circuit in parallel, for receiving the first AC signal and the second AC signal, and generating an electromagnetic wave according to the first AC signal and the second AC signal; and a receiver, comprising: at least one parallel-connected resonant circuit, for generating an AC signal in response to the electromagnetic wave emitted from the serially-connected resonant circuit; and a rectifier circuit, for converting the AC signal into a direct current (DC) signal, and outputting the DC signal.