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OwnerVasco Vollmer, Wolfgang Baierlinventors
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A method a method of accessing a device in a communications network in a motor vehicle via an external device (1) is described, a software element being transmitted to the external device in the case of authorized access to a device in the communications network to permit control of the device in the communications network by the external device. A gateway checks on whether access is possible, either checking directly with the device requested or via the system manager. Security in communication between the external device and the device to be controlled is achieved by an additional encryption and/or a specified validity period of the software element transcribed to the external device. If there is no software element for a device to be controlled, such a software element is created by using a control module and data stored in the device. A bus system, preferably according to IEEE 1394, is used as the communications network. This method increases security while at the same time using a less complex gateway.
A method of accessing a device in a communications network in a motor vehicle by an external device (1), access by the external device (1) being controlled via a gateway (4) of the communications network,
The method as recited in one of the preceding claims, wherein if there is no software element for a device in the communications network, a new software element for the device is created on the basis of a control module and data stored in the device.
The method as recited in one of the preceding claims, wherein a bus system is used as the communications network.
A gateway for controlling access by an external device to a device in a communications network in a motor vehicle, wherein information regarding the available devices in the communications network is transmittable from the gateway (4) to the external device (1) after an access inquiry by the external device (1);
Dependencies are inferred from the claim text.