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    • 3. 发明授权
    • Assembly comprising a tachograph
    • 组装包括行车记录仪
    • US07905394B2
    • 2011-03-15
    • US12066328
    • 2006-08-30
    • Franz KimmichAndreas LindingerHorst NätherMichael Salm
    • Franz KimmichAndreas LindingerHorst NätherMichael Salm
    • G06K7/10
    • G06K13/08
    • 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.
    • 组件具有行驶记录仪和数据存储器,特别是数据卡的数据存储器。 行驶记录仪具有设计用于在行驶记录仪和数据存储器之间交换数据的接口,逻辑功能模块和至少一个存储器。 在用于操作行驶记录仪的方法中,由于高安全性要求,数据存储器和行驶记录仪之间的数据传输是非常耗时的。 在数据传输开始时,在行驶记录仪的存储器中创建数据存储器的虚拟再现,并且逻辑功能模块首先对存储器中的虚拟再现进行读写访问。 然后通过对存储器的写访问,将数据定期写入数据卡的数据存储器,从而消除虚拟再现和数据存储器之间的差异。