Electronic device

Abstract

An electronic device is powered by a first power supply and connected to an external device powered by a second power supply. The electronic device comprises a master controller, a conversion module, and a detection module. The master controller outputs first information. The conversion module converts the first information into second information based on a first voltage from the first power supply and a second voltage from the second power supply to control the external device to execute corresponding functions. The detection module is connected with the first power supply and the conversion module, and generates a pull-up voltage when the voltage of the second power supply is in an abnormal state. The conversion module further converts the first information into a second information based on the voltage of the first power supply and the pull-up voltage. The pull-up voltage is larger than the first voltage.

Dependencies are inferred from the claim text.