Vehicle-mounted terminal, vehicle-mounted playback system, and vehicle-mounted audio playback method

A vehicle-mounted playback system, comprising a vehicle-mounted terminal, an audio terminal, and a smart terminal, wherein:

• the audio terminal is a terminal that is independent from a vehicle in which the vehicle-mounted terminal is mounted;
• the vehicle-mounted terminal is indirectly communicatively connected to the audio terminal;
• a first connection is established between the vehicle-mounted terminal and the smart terminal, and a second connection is established between the audio terminal and the smart terminal;
• the smart terminal is configured to, based on a user's instruction, send at least one of a video transmission request and an audio transmission request to the vehicle-mounted terminal via the first connection;
• when the smart terminal sends both the video transmission request and the audio transmission request to the vehicle-mounted terminal, the vehicle-mounted terminal is configured to respond to only the video transmission request and ignore the audio transmission request;
• the smart terminal is configured to, based on a response of the vehicle-mounted terminal to the video transmission request, transmit video data to the vehicle-mounted terminal via the first connection;
• and configured to, based on a nonresponse of the vehicle-mounted terminal to the audio transmission request, send audio data to the audio terminal via the second connection;
• the vehicle-mounted terminal is configured to receive and play only the video data, and the audio terminal is configured to receive and play the audio data;
• the audio data and the video data are sent synchronously by the smart terminal;
• the vehicle-mounted terminal is configured to:
• receive and parse a control instruction, input by a user, for adjusting playback parameters;
• and forward the parsed control instruction to the smart terminal;
• the smart terminal is configured to:
• synchronously adjust the playback parameters of the audio data and the video data based on the parsed control instruction;
• and synchronously output the audio data having the adjusted playback parameters to the audio terminal and output the video data having the adjusted playback parameters to the vehicle-mounted terminal;
• the vehicle-mounted terminal is configured to receive and play the video data having the adjusted playback parameters sent from the smart terminal;
• and
• the audio terminal is configured to receive and play the audio data having the adjusted playback parameters sent from the smart terminal.

An audio playback method applied to a vehicle-mounted terminal, wherein a first connection is established between the vehicle-mounted terminal and a smart terminal, and a second connection is established between the smart terminal and an audio terminal;

• the audio terminal is a terminal that is independent from a vehicle in which the vehicle-mounted terminal is mounted;
• the vehicle-mounted terminal is indirectly communicatively connected to the audio terminal;
• the first connection comprises a wireless connection;
• the audio playback method comprises:
• receiving at least one of a video transmission request and an audio transmission request sent by the smart terminal;
• when the video transmission request is received, in response to the video transmission request, receiving and playing video data, and when the audio transmission request is received, ignoring the audio transmission request, such that the vehicle-mounted terminal displaying only the video data, and the smart terminal transmits audio data to the audio terminal, the audio terminal playing only the audio data;
• wherein, the audio data and the video data are sent synchronously by the smart terminal;
• the method further comprises:
• the vehicle-mounted terminal receiving and parsing a control instruction, input by a user, for adjusting playback parameters;
• and forwarding the parsed control instruction to the smart terminal;
• wherein, the smart terminal is configured to:
• synchronously adjust the playback parameters of the audio data and the video data based on the parsed control instruction;
• and synchronously output the audio data having the adjusted playback parameters to the audio terminal and output the video data having the adjusted playback parameters to the vehicle-mounted terminal;
• and
• the vehicle-mounted terminal receiving and playing the video data having the adjusted playback parameters sent from the smart terminal;
• wherein the audio terminal is configured to receive and play the audio data having the adjusted playback parameters sent from the smart terminal.