Patent ID: 8223273

Claim:
A video transmission apparatus which executes wireless communication with a display device to transmit video data to the display device, comprising: a communication quality detection unit configured to detect a communication quality level of a wireless communication channel which wirelessly connects the display device and the video transmission apparatus; and a control unit configured to control a transmission start and a transmission stop of the video data using first and second threshold values relating to the communication quality level, the first threshold value being used for permitting the transmission start, the second threshold value being used for permitting the transmission stop, the second threshold value being lower than the first threshold value, wherein the control unit comprises: a start control unit configured to start a process of transmitting the video data to the display device via the wireless communication channel if the detected communication quality level exceeds the first threshold value and a hot plug detect signal, which is transmitted from the display device via the wireless communication channel, is received while transmission of the video data to the display device is stopped, the hot plug detect signal indicating that the display device is able to display the video data, and a stop control unit configured to stop the transmission of the video data to the display device if the detected communication quality level falls below the second threshold value while the process of transmitting the video data to the display device is being executed.