Tachograph

A tachograph for vehicles has a digital design with a primary microprocessor (4) and a secondary microprocessor, or sub-controller. The primary processor includes a memory, a cipher unit, a processing module and a security system and is linked to the secondary processor, or sub-controller (5) by two...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	STUMPE, REINHARD EWALD, ROMBACH, GERHARD, KIEMES, JOCHEN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE CHECKING-DEVICES GENERATING RANDOM NUMBERS PHYSICS REGISTERING OR INDICATING THE WORKING OF MACHINES TIME OR ATTENDANCE REGISTERS VOTING OR LOTTERY APPARATUS
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Beschreibung
Zusammenfassung:	A tachograph for vehicles has a digital design with a primary microprocessor (4) and a secondary microprocessor, or sub-controller. The primary processor includes a memory, a cipher unit, a processing module and a security system and is linked to the secondary processor, or sub-controller (5) by two connections. The sub-controller is linked to a control panel (22) and to a display panel (25). The security system uses operating parameters such as temperature, supply voltage, as well as user entered codes.