Continental Automotive Gmbh

Continental Automotive Technologies Gmbh

Andreas Lindinger

Gunnar Schmidt

Thomas Werner

Gerhard Rombach

Denis Smolin

Horst Näther

Jan Schlüter

Karl Asperger

Jochen Kiemes

Charles Hardinge

Ulrich Münch

Franz Kimmich

Michael Salm

Winfried Rogenz

Klaus Hoffmann

Harry Kiemele

Roland Lange

Frank Schulz

Jürgen Littwin

Rudolf Gerber

Bernd Rosmislowsky

Werner Schneckenburger

A digital tachograph has a security module. A public key, a secure private key, and a signage are stored in the security module. Vehicle-relevant data and the corresponding checksum are encoded using a secure private key and stored in the digital tachograph in a data format by the security module.

Digital tachograph

A method for operating a tachograph having an application controller and a safety controller. A memory is associated with the application controller and a further memory is associated with the safety controller. An encrypted program code having at least one associated signature is made available to the safety controller. The encrypted program code is decrypted by means of the security controller and verified by the at least one signature. It is detected whether the decrypted program code (EPC) is intended for the application controller and/or for the security controller. Depending on what is detected, the program in the memory and/or the further program in the further memory is at least partially replaced by the decrypted program code and, depending on a result of the verification, the at least partially replaced program and/or the at least partially replaced further program is released for executing.

Method for operating a tachograph and tachograph

A printer and a method of controlling a printer in order to print out a report relating to data recorded by a tachograph are disclosed, the printer having a supply of printing medium and being equipped with a medium transport device. In the disclosed printer, rest state transport of the printing medium is carried out at periodically repeating intervals.

Printer and method for controlling rest state transport of the printing medium

Data obtained by a tachograph and stored in a memory of the tachograph in a first memory region in a predetermined first data format is processed according to a predetermined processing rule and is stored in a predetermined second data format, which differs from the predetermined first data format, in a second memory region. At least part of the data stored previously in the second memory region is read depending on an inquiry of an external reading unit in relation to the tachograph and is put out via a data interface of the tachograph while maintaining the predetermined second data format.

An integrated circuit () is provided with function modules () which comprise a central processing unit () for treating data and executing a program and a cache memory (). Until now, it was complicated and costly to ensure the manipulation security of the modules. The function modules () comprise an encoding unit () for data encoding and decoding.

Arrangement comprising an integrated circuit

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.

Method and apparatus for transmitting data between a tachograph and a data processing device

A method for operating a volatile memory supplied with a supply signal arranged either as a first supply signal of a first supply signal source or a second supply signal of a second supply signal source. If an available first supply signal is present it is used otherwise the second supply signal is used. The supply signal is supplied, based on a switch position of a switching element to the volatile memory. During a detected interrupted first supply signal, the switch position of the switching element is for a predetermined period of time such that the supply signal is supplied to the volatile memory. After expiry of the predetermined period of time, the switch position of the switching element is predetermined such that the volatile memory is decoupled electrically from the supply signal.

Method and control unit for operating a volatile memory, circuit arrangement, and trip recorder

An assembly has a tachograph and a data memory, in particular a data memory of a data card. The tachograph has an interface designed to exchange data between the tachograph and the data memory, logic function modules and at least one memory. In a method for operating the tachograph, as a result of high security requirements, the data transfer between the data memory and the tachograph is extremely time-intensive. At the start of the data transfer a virtual reproduction of the data memory is created in the memory of the tachograph and the logic function modules first have read and write access to the virtual reproduction in the memory. Data is then regularly written to the data memory of the data card by a write access to the memory, thus eliminating the differences between the virtual reproduction and the data memory.

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Flözlingen, Germany

Andreas Lindinger