The video output function for
is provided by the video module 5 in conjunction with other systems.
The video module 5 controls the internal antenna diversity unit and the screen with or without the navigation system option. The video module 5 also processes the sound for the TV function. The video module 5 is a MOST network node.
The MOST (Media Oriented Systems Transport) bus links the audio, video and navigation systems. Information relating to function requests is transmitted to the relevant control modules by means of MOST bus messages.
There are two TV antennas integrated in the rear window. The TV signals they receive are filtered and amplified by the antenna amplifier.
The antenna amplifier receives a short-circuit proof power supply from the video module via the antenna sockets.
The Control Display displays the navigation system information and the control options for the navigation, audio and video system functions. Operation is by means of the controller located on the front of the center armrest.
The control display coordinates the function requests from the system and assigns them to the relevant functions.
The Video module 5 controls
The video module also processes the sound for the TV function and sends it via the MOST network to the ASK as an audio signal.
The control display is the only control module which knows which function is currently active on the system. If the volume is to be increased (function request), the Control Display sends a messages to that effect to the ASK/amplifier. This telegram also contains the information indicating to which audio source the volume adjustment applies. Infotainment audio output is always a certain amount louder than the entertainment sources.
The video module is connected to the ASK (audio system controller) via the MOST bus.
The ASK outputs the audio signals to the speakers.
The ASK switches over from radio sound to
if it receives the corresponding information from the Control Display via the MOST bus.
The ”mute” function turns off the radio/TV sound. The mute function is activated on the ASK by receipt of
If a traffic news bulletin is received when the radio has been muted, the radio is not demuted. The traffic bulletin is suppressed.
The self-diagnosis function on the video module 5 is initiated every three to five minutes. At worst, a fault may be present for 5 minutes before it is stored in the fault memory. It is possible to start a fault memory search (self-test) in order to check on work carried out.
CVBS signals are decoded by the video module because the Control Display can only process RGB signals. If the Japan navigation system option is fitted, the navigation system uses a video module RGB input. The navigation system data is passed to the Control Display by the video module. Direct connection of the Japan navigation system to the Control Display is not possible because the video module adapts the data.