Method for accessing a device belonging to a communications network in an automobile through an external device, and gateway
First Claim
1. 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, wherein, following an access request by the external device (1), information regarding the available devices in the communications network is transmitted by the gateway (4) to the external device (1);
- the gateway (4) checks on whether the device requested by the external device (1) is allowing access;
when access to the requested device is possible, the one software element is transmitted to the external device (1) to enable communication between the external device (1) and the requested device; and
when no access to the requested device is possible, this is reported to the external device (1) by the gateway (4).
1 Assignment
0 Petitions
Accused Products
Abstract
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.
21 Citations
12 Claims
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1. 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,
wherein, following an access request by the external device (1), information regarding the available devices in the communications network is transmitted by the gateway (4) to the external device (1); - the gateway (4) checks on whether the device requested by the external device (1) is allowing access;
when access to the requested device is possible, the one software element is transmitted to the external device (1) to enable communication between the external device (1) and the requested device; and
when no access to the requested device is possible, this is reported to the external device (1) by the gateway (4). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- the gateway (4) checks on whether the device requested by the external device (1) is allowing access;
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11. 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);
- the gateway (4) is able to check on whether the device requested by the external device (1) allows access by the external device (1);
in the case of a possible access to the device requested, a software element is transmittable from the gateway (4) to the external device (1) to permit communication between the external device and the device requested; and
if no access is possible, the external device (1) may be notified of this by the gateway (4). - View Dependent Claims (12)
- the gateway (4) is able to check on whether the device requested by the external device (1) allows access by the external device (1);
Specification