Method and apparatus for controlling data transmission between two modules in a motor vehicle
AssigneeSiemens Aktiengesellschaft
InventorsMarten Swart, Anton Anthofer
Life of this patent
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Abstract
The present invention relates to a method and an apparatus for controlling the data transmission between two modules which are present in a motor vehicle and are connected to one another via a communications interface and a communications bus. The transmitting module defines the data to be transmitted in the form of code words in dependence on sensor signals generated by a first sensor and a second, redundant sensor, the sensor signal of one of the two sensors being applied directly to the communications interface of the module and serving for checking and/or changing part of the code word applied to the communications interface for the purpose of transmission.
Claims15
A method of controlling data transmission between two modules in a motor vehicle, which comprises:
- providing first and second modules connected to one another via a communications bus;
- generating sensor signals with a first sensor and a second sensor, applying the sensor signals to the first module, and applying one of the sensor signals to a communications interface of the first module;
- defining, with the first module, data to be transmitted in the form of code words in dependence on the sensor signals received from the first sensor and the second sensor;
- evaluating the sensor signal applied to the communications interface of the first module for checking and/or changing a part of the code word applied to the communications interface for transmission via the communications bus.
A data transmission control apparatus in a motor vehicle, comprising:
- a first module having a first sensor input, a second sensor input, and a communications interface;
- a second module;
- a communications bus connecting said second module to said first module via said communications interface;
- said first module defining data to be transmitted via said communications bus in form of code words in dependence on sensor signals received via said first and second sensor inputs;
- said communications interface having a safing sensor input commonly connected to one of said first and second sensor input, and a device adapted to change a part of the code word in dependence on the sensor signal applied to the communications interface.
Dependencies are inferred from the claim text.