Display device, display system, and data supply method for display device

A display system comprising:

• a display device including
• a function device connected to an external device and having a first interface and a second interface,
• a storage section storing configuration information, which assigns the same class to the first interface and the second interface,
• a display section adapted to display an image on a display surface,
• a detector adapted to discriminate between a first pointing body and a second pointing body for pointing to a position on the display surface, and detect a first position pointed to by the first pointing body and a second position pointed to by the second pointing body on the display surface, and
• a supply section adapted to assign first coordinate data representing the first position detected by the detector and supply the external device with the first coordinate data via the function device, and assign second coordinate data representing the second position detected by the detector and supply the external device with the second coordinate data via the function device;
• and
• a host device connected to the display device in a manner compliant with the USB standard, and including
• an execution section adapted to execute a process corresponding to one of the first position and the second position based on the first coordinate data and the second coordinate data supplied via the function device,
• wherein the first pointing body and the second pointing body are external to the display device and the display surface.

A data supply method for a display device having a function device connected to a host device and having a first interface and a second interface, the method comprising:

• displaying an image on a display surface;
• discriminating between a first pointing body and a second pointing body for pointing to a position on the display surface;
• detecting a first position pointed to by the first pointing body on the display surface;
• detecting a second position pointed to by the second pointing body on the display surface;
• assigning the same class to the first interface and the second interface;
• assigning first coordinate data representing the first position detected in the detecting of the first position to the first interface and supplying the host device with the first coordinate data via the function device;
• and
• assigning second coordinate data representing the second position detected in the detecting of the second position to the second interface and supplying the host device with the second coordinate data via the function device,
• wherein the first pointing body and the second pointing body are external to the display device and the display surface.