Secure data exchange device for motor vehicle, compares incoming data from one bus system with reference data before allowing through connection to second bus

摘要

The device has a gateway (16) which controls the data exchange between a first bus system (12) and a second bus system (24). The gateway includes a checking device (30,34) for checking the data to be transmitted between the two bus systems. The gateway includes a through-connecting device (32) for controlling the data transmission based on the check performed by the checking device. The checking device compares incoming data with reference data stored in memory.