| 摘要 |
The present application discloses a hand held device, a USB charger, and a method for a hand held device to identify a USB charger. An identification information module is connected to a non-power pin inside a USB charger charging joint, 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 inside the hand held device charging interface 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 identifying the USB charger and using the USB charger for charging; otherwise, the hand held device is not capable of identifying the USB charger and is not capable of using the USB charger for charging, so that the hand held device can only use the matching USB charger for charging, thereby further ensuring the charging safety of the hand held device. |
