Method and apparatus for transmitting data between a tachograph and a data processing device
First Claim
1. A method for transmitting data via a transmission path between a tachograph arranged in a vehicle and a data processing device remote from the vehicle, comprising:
- receiving by the tachograph an enquiry sent by the data processing device;
encrypting by the tachograph, only when the enquiry includes an encryption request, data to be sent by the tachograph to the data processing device, the encrypting being based at least in part on the encryption request;
transmitting only the encrypted data by the tachograph to the data processing device via a first path section arranged between the tachograph and a communication controller arranged in the vehicle and via a second path section arranged between the communication controller and the data processing device and comprising an air link when the enquiry includes the encryption request,whereby the step of encrypting is performed only when the enquiry includes the encryption request, allowing an increased transmission rate when the encryption request is not present.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and method for transmitting data via a transmission path between a tachograph arranged in a vehicle, and a data processing device which is remote from the vehicle. To improve data protection, the transmission takes place via a first path section of the transmission path, which path section is arranged between the tachograph and a communication controller arranged in the vehicle, and a second wireless path section of the transmission path, which path section is arranged between the communication controller and the data processing device. The tachograph in response to an encryption request signal sent from the data processing device to the tachograph encrypts data sent from the tachograph to the data processing device. The data is transmitted in encrypted form from the tachograph to the data processing device both via the first path section and via the second path section.
-
Citations
14 Claims
-
1. A method for transmitting data via a transmission path between a tachograph arranged in a vehicle and a data processing device remote from the vehicle, comprising:
-
receiving by the tachograph an enquiry sent by the data processing device; encrypting by the tachograph, only when the enquiry includes an encryption request, data to be sent by the tachograph to the data processing device, the encrypting being based at least in part on the encryption request; transmitting only the encrypted data by the tachograph to the data processing device via a first path section arranged between the tachograph and a communication controller arranged in the vehicle and via a second path section arranged between the communication controller and the data processing device and comprising an air link when the enquiry includes the encryption request, whereby the step of encrypting is performed only when the enquiry includes the encryption request, allowing an increased transmission rate when the encryption request is not present. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An apparatus for transmitting data via a transmission path between a tachograph and a data processing device, the apparatus comprising:
-
the tachograph arranged in a vehicle; a communication controller arranged in the vehicle and coupled to the tachograph; the data processing device arranged remote from the vehicle; and the tachograph including an encryption device configured to encrypt the data in response to an enquiry, wherein a first path section of the transmission path is arranged between the tachograph and the communication controller and a second path section of the transmission path comprising a wireless link is arranged between the communication controller and the data processing device, wherein the tachograph is configured to transmit only the encrypted data to the data processing device via the first path section and via the second path section only when the enquiry includes an encryption request, whereby the encrypting is performed only when the enquiry includes the encryption request, allowing an increased transmission rate when the encryption request is not present. - View Dependent Claims (10, 11, 12, 13, 14)
-
Specification