POWER MANAGEMENT CIRCUITRY IN PERIPHERAL ACCESSORIES OF AUDIO DEVICES

摘要

A power management circuitry for a peripheral electronic device includes a power regeneration circuitry, a power selector, a power switch and an audio signal detection circuitry. The power regeneration circuitry receives a continuous periodic sound wave from an audio device and converts the continuous periodic sound wave into an amplified DC electrical signal. The power source selector receives the amplified DC electrical signal and input from a primary power source and provides a power signal output. The audio signal detection circuitry receives the amplified DC electrical signal and transmits a wake-up signal to the power switch circuitry. The power switch circuitry is turned on by the wake-up signal and connects the power source selector to the peripheral electronic device main circuitry and transfers the power signal output to the peripheral electronic device main circuitry.

主权项

1. A power management circuitry used in a peripheral electronic device comprising:
a power regeneration circuitry 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 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 based on said first and second inputs; a power switch circuitry; an audio signal detection circuitry 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 turned on by the wake-up signal and said power switch circuitry connects the power source selector to the peripheral electronic device main circuitry and thereby transfers the power signal output to the peripheral electronic device main circuitry.