Tablet computer and method for controlling the same

A tablet computer, comprising:

• an external device input interface configured for connecting to an external device and receiving a first video signal outputted from the external device;
• a first low voltage differential signal converter electrically coupled to the external device input interface and configured for converting the first video signal into a first low voltage differential signal;
• a processor configured for outputting a second video signal;
• a second low voltage differential signal converter electrically coupled to the processor and configured for converting the second video signal into a second low voltage differential signal;
• and
• a low voltage differential signal switch electrically coupled to the first low voltage differential signal converter and the second low voltage differential signal converter, wherein when the tablet computer operates in a tablet computer mode, the low voltage differential signal switch outputs the second low voltage differential signal, and when the tablet computer operates in an external device mode, the low voltage differential signal switch outputs the first low voltage differential signal;
• and
• a display module electrically coupled to the low voltage differential signal switch and configured for displaying corresponding data based on the first low voltage differential signal or the second low voltage differential signal outputted from the low voltage differential signal switch;
• wherein the display module is a touch display module configured for sensing touch events, and the display module generates a touch signal based on the touch events, wherein the tablet computer further comprises a touch signal switch electrically coupled to the touch display module, the processor, and the external device input interface, and the touch signal switch is configured for receiving the touch signal, wherein when the tablet computer operates in the tablet computer mode, the touch signal switch transmits the touch signal to the processor, and when the tablet computer operates in the external device mode, the touch signal switch transmits the touch signal to the external device via the external device input interface.