Signal communication apparatus and signal communication system

A signal communication system comprising:

• an information processing device, which outputs an image signal;
• an image display device, which displays an image based on the image signal;
• and
• a signal communication apparatus,
• wherein the signal communication apparatus includes:
• a transmission component connected with the information processing device via a first cable, the transmission component being outside and separate from the information processing device and receiving the output image signal via the first cable, the transmission component also being connected with a signal propagation medium, the transmission component transmitting the image signal through the connected signal propagation medium;
• a reception component connected with the image display device via a second cable, the image display device having a plurality of resolution modes, the reception component being connected with the signal propagation medium to receive the image signal transmitted from the transmission component through the connected signal propagation medium, and the reception component outputting the image signal to the connected image display device via the second cable;
• and
• an extended display identification data information storage component which is removably attached to the transmission component, the extended display identification data information storage component storing extended display identification data information for identifying a particular model name and particular setting values of the image display device,
• wherein the extended display identification data information storage component is located outside of the image display device, and
• the information processing device acquires the extended display identification data information from the extended display identification data information storage component connected to the transmission component, via the first cable, and the information processing device outputs the image signal via the first cable to the connected transmission component in a format corresponding to one of the resolution modes of the image display device, in accordance with at least a portion of the acquired extended display identification data information.