Patent ID: 7755653

Claim:
An image display system including: a transmitter device that can transmit video data and audio data; and a receiver device that is connected via an high-definition multimedia interface (HDMI) cable to the transmitter device and that includes a display device that displays video based on video data from the transmitter device and an audio output device that outputs audio based on audio data from the transmitter device, wherein the receiver device comprises an HDMI receiver that, when the receiver device is connected via the HDMI cable to the transmitter device and then receives therefrom an extended display identification data (EDID) request, transmits EDID, and that thereafter, when the receiver device receives video data and audio data from the transmitter device, checks whether or not the receiver device has received EDID-complying data so that if EDID-complying data is found to have been received, the HDMI receiver decodes and outputs the video data and the audio data to the display device and the audio output device respectively and if non-EDID-complying data is found to have been received, the HDMI receiver, by once cutting off connection via the HDMI cable or turning off the receiver device, makes the transmitter device perform again an operation for acquiring EDID to thereby acquire correct EDID.