Patent ID: 9606597
Date: 2017-03-28
CPC Classifications: G06F,H02J

Claim:
1. An intermediate electronic device, arranged to be coupled to a host system and an electronic device, the intermediate electronic device comprising: a controller, enabled by an enable signal to process a data transmission between the host system and the electronic device; and a power transmission unit, disposed between the host system and the electronic device to detect whether the power transmission unit is coupled to the host system or an external power source; wherein, when the power transmission unit detects that the power transmission unit is coupled to the host system, but not coupled to the external power source, the power transmission unit informs the host system to raise the voltage which is outputted to the intermediate electronic device to supply power to the electronic device, and the power transmission unit converts the raised voltage into an appropriate voltage and outputs the appropriate voltage to the controller as the enable signal.