公开(公告)号：US09128691B2

公开(公告)日：2015-09-08

申请号：US13657292

申请日：2012-10-22

Applicant: Huawei Device Co., Ltd.

Inventor： Shengcai Liu

IPC: G06F1/00 ,  G06F1/26 ,  G06F13/40

CPC classification number: G06F1/266 ,  G06F13/4077

Abstract: A method for selecting an internal circuit according to a USB interface status includes: connecting a first pin of a USB interface of a terminal to a power supply through a pull-up resistor, where the first pin is a D− or D+ pin; when detecting that an external USB device is inserted into the USB interface, detecting whether the level status of the first pin is high or low; if the level status is low, connecting the D− and D+ pins to corresponding pins of a USB data communication module of the terminal and controlling charging of the terminal according to a first policy; if the level status is high, determining whether the level statuses of the D− and D+ pins are consistent, and if consistent, controlling charging of the terminal according to a second policy; if inconsistent, controlling charging of the terminal according to a third policy.

Abstract translation: 根据USB接口状态选择内部电路的方法包括：通过上拉电阻将端子的USB接口的第一引脚连接到电源，其中第一引脚是D或D +引脚; 当检测到外部USB设备插入USB接口时，检测第一个引脚的电平状态是高电平还是低电平; 如果电平状态低，则将D-和D +引脚连接到终端的USB数据通信模块的相应引脚，并根据第一策略控制终端的充电; 如果电平状态很高，则确定D-和D +引脚的电平状态是否一致，如果一致，则根据第二策略控制终端的充电; 如果不一致，则根据第三策略控制终端的充电。

公开(公告)号：US20130103966A1

公开(公告)日：2013-04-25

申请号：US13657292

申请日：2012-10-22

Applicant: Huawei Device Co., Ltd.

Inventor： Shengcai Liu

IPC: G06F1/26

CPC classification number: G06F1/266 ,  G06F13/4077

Abstract: A method for selecting an internal circuit according to a USB interface status includes: connecting a first pin of a USB interface of a terminal to a power supply through a pull-up resistor, where the first pin is a D− or D+ pin; when detecting that an external USB device is inserted into the USB interface, detecting whether the level status of the first pin is high or low; if the level status is low, connecting the D− and D+ pins to corresponding pins of a USB data communication module of the terminal and controlling charging of the terminal according to a first policy; if the level status is high, determining whether the level statuses of the D− and D+ pins are consistent, and if consistent, controlling charging of the terminal according to a second policy; if inconsistent, controlling charging of the terminal according to a third policy.

Abstract translation: 根据USB接口状态选择内部电路的方法包括：通过上拉电阻将端子的USB接口的第一引脚连接到电源，其中第一引脚是D或D +引脚; 当检测到外部USB设备插入USB接口时，检测第一个引脚的电平状态是高电平还是低电平; 如果电平状态低，则将D-和D +引脚连接到终端的USB数据通信模块的相应引脚，并根据第一策略控制终端的充电; 如果电平状态很高，则确定D-和D +引脚的电平状态是否一致，如果一致，则根据第二策略控制终端的充电; 如果不一致，则根据第三策略控制终端的充电。