Patent ID: 6996613

Claim:
Home system having a plurality of devices connected to one another via a home bus interface, in particular an IEEE 1394 bus interface, wherein one of the devices contains a control unit which, when operated appropriately by a user, polls system data for other devices in this system via the home bus interface, wherein said system data comprises characteristic data for a device, in particular a serial number, the manufacturer's mark, the device class, output/input characteristics, the software version or any error data and passes this system data to an output unit of the one device, the output unit being a device for writing to a mobile, digital data medium which can store the system data, wherein the mobile, digital data medium is one of a smart card and a chip card having a memory, and in that, when operated appropriately by a user, the control unit in the one device stores system data for the connected other devices on one of the smart card and the chip card using the device.