Human machine interface unit for a communication device in a vehicle and i/o method using said human machine interface unit

Human machine interface unit for a communication device in a vehicle, comprising a controller means, a memory means, an API interface means in communication with a communication application means APP and at least one I/O interface means I/O-IM in communication with at least one physical I/O unit PHEx for physically communicating with an HMI endpoint user HEx, the I/O interface means I/O-IM being also in communication with at least one vehicle state unit VS, one driving state unit DS and/or one environmental condition state unit EC, the API interface means API providing a standardized set of abstract input and output methods AMx for inputting data into and outputting data out of the communication application means APP;

• and the controller means selecting at least one physical I/O unit PHEx for physically inputting data from or outputting data to the physical I/O unit PHEx depending on a set of criteria stored in the memory means, comprising at least one type of a requested abstract I/O method AMx, an addressed HMI endpoint user HEx, a vehicle state VSx, a driving state DSx and/or an environmental condition ECx.