Patent ID: 8284312

Claim:
A video display device which is connected to a video transmission device via a High Definition Multimedia Interface (HDMI), the video display comprising: a memory configured to store display side recognition data in plural formats corresponding to a format of a display data at the video transmission device side, one of the display side recognition data being set as an initial read data; a response unit configured to send a response signal to the video transmission device in response to a connection signal inputted from the video transmission device via the HDMI interface when the video display device is connected to the video transmission device via the HDMI interface, and to send the initial read data of said memory after sending the response signal to the video transmission device; an accepting unit to receive a display recognition command inputted from an external device; and a control unit configured to control the response unit to reset an output of the response signal after changing the initial read data to another display side recognition data in another format in said memory in response to receipt of the display recognition command by said accepting unit, and then to resend the response signal to the video transmission device in response to the connection signal inputted from the video transmission device again and to resend the changed initial read data.