Multimedia broadcasting system and broadcasting method triggered by charging operation and power transmission device thereof

A multimedia broadcasting method triggered by a charging operation, comprising steps of:

• a) providing a multimedia device and a power transmission device, wherein the power transmission device comprises a discharging connector and a control unit, and the control unit stores identification information that is readable by the multimedia device;
• b) transmitting the identification information, wherein the control unit transmits the identification information to the multimedia device when the discharging connector is connected to the multimedia device;
• and
• c) playing digital content data, wherein the identification information triggers the multimedia device to play the digital content data corresponding to the identification information.