Picture Output

Picture Output

The video output function for
- television (teletext to be available later)
- processing video signals from a DVD source
is provided by the video module 5 in conjunction with other systems.

NOTE: For diagnosis requests via the control unit functions, the entertainment source, television, must first be selected via the Central Information Display.

Brief description of components

Video module 5
The video module 5 controls the internal aerial diversity. The video module 5 processes the sound for the TV function. The video module 5 a MOST framework network node.

MOST bus
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 units by means of MOST bus messages.

Digital television
Digital television is enabled with the new Hybrid video module for digital reception. This control unit can receive digital and analog television. In the case of digital television, the picture information is transferred via data flow to one frequency. This technology leads to improved picture and sound quality. Depending on the reception quality, the video module switches automatically between analog and digital reception. The customer can perceive the switch from digital to analog television. A noticeable loss in sound and picture quality occurs.

Window aerials and amplifiers
There are two TV aerials integrated in the rear window. The receives TV signals are filtered and amplified in the aerial amplifier.
The aerial amplifier is powered short-circuit-proof by the video module via the aerial sockets.

Control Display (CD) and Controller
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 centre armrest.

Main functions

Video module 5 control tasks
The video module 5 internally controls the aerial diversity. The TV aerial diversity unit is integrated in the video module. The TV aerial diversity unit ensures that the best possible reception is obtained. The TV aerial diversity unit in the video module connects the aerial with the best reception to the video output.
The video module processes the sound for the TV function and sends it via the MOST network to the ASK in the CCC as an audio signal.

Radio/TV/Navigation system sound output
The video module is connected via the MOST bus to the CCC.
The ASK in the CCC outputs the audio signals to the speakers. If the SA Top HiFi system is fitted, the audio signals are sent across the MOST bus to the amplifier. This outputs the audio signals to the speakers.
The CCC switches over from radio sound to
- TV function or
- Navigation system
if it receives the corresponding information from the Control Display via the MOST bus.

Radio/TV mute function
The "mute" function turns off the radio/TV sound. The mute function is activated on the ASK by receipt of
- telephone calls
- navigation system announcements
- traffic news bulletins

If a traffic news bulletin is received when the radio has been muted, the radio is not demuted. The traffic bulletin is suppressed.

Notes for Service department
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.

Country-specific version

Japan
If the optional extra Navigation Japan is fitted, the navigation system uses a video module RGB input. The navigation system data is processed and passed to the CCC by the video module. The CCC passes the video signals to the CD.