| 摘要 |
An identification information module is connected to a non-power pin inside a USB charger charging interface, and the identification information module contains identification information that marks identity information of the USB charger, and meanwhile, an identification information acquisition module is set between the non-power pin and a charging control circuit, configured to acquire the identification information inside the USB charger and provide it to the charging control circuit, and the charging control circuit compares the acquired identification information with standard identification information, and if the identification information is within the standard information range, the hand held device is capable of using the USB charger for charging; otherwise, the hand held device is not capable of using the USB charger for charging, thereby ensuring the charging safety of the hand held device. |
