| 摘要 |
A multimedia system includes a portable device, a multimedia expansion apparatus and a second display. The portable device further includes a main body and a first display coupling with the main body, in which the main body has a first multimedia module and a switch module. The multimedia further includes an expansion port for coupling the portable device, a multimedia switch circuit, a plurality of signal output ports and a power control circuit for energizing the expansion port, the multimedia switch circuit and the signal output ports. The second display is coupled with one of the signal output ports. The switch module forwards a multimedia signal of the main body to one of the first multimedia module and the multimedia switch circuit, and the power control circuit is to terminate power output to while the portable device is separated from the expansion port of the multimedia expansion apparatus. |
