公开(公告)号：US20150074438A1

公开(公告)日：2015-03-12

申请号：US14490046

申请日：2014-09-18

Applicant: VIA Technologies, Inc.

Inventor： YI-LIN LAI ,  Bo-Ming Huang ,  Kuo-Yu Wu

IPC: G06F1/26 ,  G06F1/32

CPC classification number: G06F1/263 ,  G06F1/266 ,  G06F1/3212

Abstract: An adaptive universal serial bus (USB) charging method and system are disclosed. In a low-power state, a USB device is charged with a non-USB charging mode. The non-USB charging mode is retained when no variation of a data signal coupled to the USB device is detected. When the data signal possesses variation for a first period, it is switched to a third proprietary charging mode.

Abstract translation: 公开了一种自适应通用串行总线（USB）充电方法和系统。 在低功耗状态下，USB设备以非USB充电模式进行充电。 当不检测到耦合到USB设备的数据信号的变化时，保持非USB充电模式。 当数据信号具有第一周期的变化时，它被切换到第三专有充电模式。