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BAP operating and display protocol
This new data protocol represents the future
communication protocol for display data.
The aim is to switch all control units that exchange
display and operating data over to this new standard.
The BAP operating and display protocol does not
assign a fixed data channel, but instead the control
unit supplying the display data transmits this data
universally in BAP format to the CAN data bus.
This kind of data provision is also called broadcasting
because of similarities with radio.
In radio, the stations are also broadcast by the
transmitter for general reception.
The displaying control unit, in this example, the control
unit with display in dash panel insert, reads and
displays the data supplied by the radio/navigation
system. This means that the control unit with display in
dash panel insert is itself responsible for controlling
the display. In this case, it would continue to watch the
BAP data packages and only update its display when
new BAP message content is actually available.
One more specific example is the display of
telephone data via the radio/navigation system.
The data from the mobile telephone operating
electronics control unit J412 is received, read and
displayed by the RNS 510 radio/navigation system as
a displaying control unit using this data protocol.
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