On-vehicle audio/video systems

An on-vehicle audio/video system comprising a controller, a data source and a playing device,

• wherein the controller comprises at least a first transmitter, the data source comprises at least a first receiver, a second micro-controller and a second transmitter, said controller is an radio frequency (RE) controller, the first transmitter is an RE transmitter;
• and said first receiver of said data source is an RF receiver,
• wherein said controller sends an RF control signal to the data source, said first RF receiver in the data source receives the RF control signal and sends the signal to the second micro-controller for processing, and said second transmitter transmits data signals and/or the control signal to said playing device under the control of said second micro-controller;
• wherein said data source further comprises a first decoding/encoding unit, and said playing device comprises a second decoding/encoding unit and a third micro-controller;
• wherein said first decoding/encoding unit is able to decode a first RE wake-up signal transmitted from the controller, the decoded first RE wake-up signal is transmitted to the second micro-controller so that the second micro-controller executes a wake-up operation of the data source according to the decoded first RE wake-up signal;
• and
• wherein said second decoding/encoding unit is able to decode a second RE wake-up signal transmitted from the controller, the decoded second RE wake-up signal is sent to the third micro-controller so that the third micro-controller executes a wake-up operation of the playing device according to the decoded second RE wake-up signal.