Patent ID: 9678557
Date: 2017-06-13
CPC Classifications: G06F,Y02D

Claim:
1. An electricity saving method for a universal serial BUS (USB) data transmission system, wherein the USB data transmission system comprises: a USB device and a host device which performs data transmission by using a mass storage protocol with the USB device; and the method comprises: the host device detecting a detection instruction sent by the host device to the USB device, wherein the detection instruction is used for detecting whether the USB device has already been connected to the host device; in a situation that the detection instruction is detected and there is no specified data transmission between the host device and the USB device, the host device replacing the USB device to analyze and respond to the detection instruction; when a duration during which there is no data transmission between the host device and the USB device exceeds a predetermined duration, the host device notifying the USB device to suspend.