Patent ID: 8840017
Filing Date: 2014-09-23
Classification: G07F,H02J

Abstract:
1. A power management circuitry used in a peripheral electronic device comprising: a power regeneration circuitry configured to receive a continuous periodic sound wave from an audio device and to convert the continuous periodic sound wave into an amplified DC electrical signal; a power source selector configured to receive a first input comprising the amplified DC electrical signal from the power regeneration circuitry and a second input from a primary power source and to provide a power signal output; a power switch circuitry; an audio signal detection circuitry configured to receive the amplified DC electrical signal from the power regeneration circuitry and to transmit a wake-up signal to the power switch circuitry; and wherein the power switch circuitry is configured to be turned on by the wake-up signal and to connect the power source selector to the peripheral electronic device main circuitry and thereby to transfer the power signal output to the peripheral electronic device main circuitry.