Patent ID: 8203565

Claim:
An image display system including an image supply device and an image display device, the image supply device comprising: a memory that is configured to: supply data for producing a packet to be transferred to the image display device; and generate a command packet and a data packet, each of a same common fixed length, and produce the command packet as a packet with an identifier set to a predetermined value at a predetermined position to indicate command data, and the data packet as a packet with an identifier set to a value different from the predetermined value at the predetermined position; and a communication interface that is configured to send the command packet or the data packet as the packet; and the image display device comprising: a communication interface that is configured to receive the packet from the image supply device; a device processor; a data processor; and a demultiplexer, wherein, in a case where the identifier of the received packet is set to the predetermined value, the demultiplexer transfers the packet to the device processor, and in a case where the identifier of the received packet is set to a different value from the predetermined value, the demultiplexer transfers the packet to the data processor.