Video device, wireless audio device and method for performing audio and video synchronization between video device and wireless audio device

A video device for performing audio and video (AV) synchronization with a wireless audio device, comprising:

• a video processing path, configured to process video data for display;
• an audio processing path, configured to process audio data for playback;
• and
• a controller, coupled to the video processing path and the audio processing path, configured to receive information of a communications quality of the wireless audio device from the wireless audio device, in order to determine a wireless communications delay between the video device and the wireless audio device according to the information of the communications quality;
• wherein the controller generates time map information according to a video delay of the video processing path, an audio delay of the audio processing path and the wireless communications delay, to allow the video device to transmit the time map information to the wireless audio device for AV synchronization between the video device and the wireless audio device.

A wireless audio device for performing audio and video (AV) synchronization with a video device, comprising:

• a wireless communications circuit, configured to receive packets from the video device;
• a controller, coupled to the wireless communications circuit, configured to generate information of a communications quality of the wireless audio device, wherein the information of the communications quality is reported to the video device, to allow the video device to determine a wireless communications delay between the video device and the wireless audio device according to the information of the communications quality;
• and
• an audio output device, coupled to the controller, configured to play audio data received from the video device;
• wherein the video device transmits a time map information generated according to the wireless communications delay in conjunction with the audio data to the wireless audio device, to allow the audio data played by the audio output device to be synchronized with audio data played on the video device or the video data displayed on the video device with aid of the time map information.