Patent ID: 7500022

Claim:
A computer system for playing a multimedia source of a storage medium, the computer system comprising: a display device; a video output interface for transmitting a video signal of the multimedia source to an external display device; and a control module electrically connected to the display device and the video output interface, the control module comprising: a single central processing unit receiving the video signal of the multimedia source and outputting a host signal formatted for the display device when the computer system is powered on and a computer mode is entered; a single multimedia processing unit transforming the video signal of the multimedia source to conform to the format for the display device when the central processing unit is powered off and a multimedia mode is entered, wherein the central processing unit and the multimedia processing unit each have a corresponding power source, the central processing unit is powered on and the multimedia processing unit is powered off when the computer system enters computer mode, and the central processing unit is powered off and the multimedia processing unit is powered on when the computer system enters multimedia mode; and an output switch circuit electrically connected to the central processing unit, the multimedia processing unit, and the display device, the output switch circuit comprising inputs X 1 and X 2 respectively coupled to the central processing unit and the multimedia processing unit, and outputs Y 1 and Y 2 respectively coupled to the display device and the video output interface; wherein the input X 1 or X 2 of the output switch circuit is selected to receive signals from the central processing unit or from the multimedia processing unit respectively, and the output Y 1 or Y 2 is selected to output video signals to the display device or to the video output interface respectively.