Patent attributes
An audio-visual transmission device connected with a camera and a receiver is provided and includes a wireless module, a processor and a universal serial bus (USB) port. The wireless module is used for wireless connection with the camera to receive an audio-visual data transmitted from the camera. The processor transmits a connection request signal to the camera through the wireless module. The universal serial bus (USB) port is used for transmitting the audio-visual data. The camera transmits a connection acknowledgment signal and the audio-visual data back to the processor via the wireless module according to the connection request signal, and the receiver is connected to the audio-visual transmission device through the USB port to receive the audio-visual data.