Patent · US Active

Assembly comprising a tachograph

US7905394B2 · kind B2 · utility

1Cited by

7References

20Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Franz Kimmich · Schramberg, DE
Andreas Lindinger · Clingen, DE
Horst Nather · Villingen-Schwenningen, DE
Michael Salm · Dornhan, DE

Key dates

Filing date	Aug 30, 2006
Grant date	Mar 15, 2011
Priority date	—
Expiry date	Oct 24, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG06K13/08
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.