Continental Automotive Gmbh

Vdo Kienzle Gmbh

Horst Näther

Thomas Riester

Andreas Lindinger

Norbert Lais

Dieter Klostermeier

Franz Kimmich

Peter Wolf

Klaus Hoffmann

Michael Salm

Jürgen Littwin

Werner Schneckenburger

Armin Obergfell

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.

Assembly comprising a tachograph

In a method for transferring data from a tachograph () onto a smartcard (), the smartcard () is moved out of and back into the tachograph () by an electromotive drive () as a function of stipulated conditions. In the process, spring contacts () of the tachograph () rub over contact areas () of the smartcard () and remove any dirt which may be present. The conditions for starting the electromotive drive () and the intended operation of the electromotive drive () are stored in a memory () of an electronic control device ().

Method for operating a tachograph and tachograph for carrying out the method

A device for short-distance recording for motor vehicles is disclosed for the evaluation of an accident or near-accident driving situation. A storage arrangement is provided in which speed measurements are simultaneously written into at least two parallel storage branches. A plurality of time-limited storage areas are defined in each storage branch. Each storage area has a storage portion which can be operated as a ring storage and a storage portion arranged subsequent to the latter which can be operated as a linear storage. The speed values, which are written into the ring storage in a continuous manner during the course of normal driving, are permanently stored in one storage branch when the criterion v equal to 0 km/hr occurs, and in the other storage branch when the criterion a greater than a deceleration threshold value occurs. Subsequent speed values are written into the linear storage of the respective storage area until the set time limit, after which a free storage area of the respective storage branch is switched to.

Registration arrangement for motor vehicles with a measured value

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Villingen-Schwenningen, Germany

Horst Näther