Data transmission device and method for transmitting display and touch data and computer system having the same

A data transmission method for transmitting display data and touch data use in a data transmission device disposed in a computer system having a touch display device, the data transmission method comprises:

• retrieving a piece of display panel setting data by a signal transmission module from a display panel data storage module through at least one specific pin of a display panel signal transmission interface in a display panel initialization time period;
• initializing a display panel comprised in the touch display device;
• transmitting at least one piece of setting data by the signal transmission module to a touch control module of the data transmission device through the same specific pin after the display panel initialization time period;
• initializing a touch panel of the touch display device according to the piece of setting data;
• generating at least one touch signal by the touch control module according to at least one touch action on the touch panel;
• and
• receiving the touch signal by the signal transmission module from the touch control module through the same specific pin.

A computer system comprising:

• a touch display device comprising a display panel and a touch panel;
• a host;
• and
• a data transmission device comprising:
• a display panel data storage module disposed in the touch display device to store at least one piece of display panel setting data;
• a touch control module disposed in the touch display device to generate at least one touch signal according to at least one touch action on the touch panel;
• a display panel signal transmission interface;
• and
• a signal transmission module disposed in the host;
• wherein the signal transmission module retrieves the piece of display panel setting data from the display panel data storage module through at least one specific pin of the display panel signal transmission interface in a display panel initialization time period;
• the signal transmission module receives the touch signal from the touch control module through the same specific pin after the display panel initialization time period.