TODAY’S PATENT – MOTOR VEHICLE NAVIGATION SYSTEM HAVING A PROTECTED STORAGE MEDIUM
The current invention was invented by Martin Thoone &Theo Drijfhout which was assigned to Mannesmann VDO AG on 10th July 2001. This invention was granted utility patent on 27th February 2007 bearing the patent grant number. US7185369B2 by the USPTO.
It is relating to a computerized navigation or multimedia system for a motor vehicle. The system includes a central processor connected to associated memory elements, as well as input, output, and a reader for a bulk storage medium. The invention also relates to a storage medium for a computer system in a motor vehicle and a method for making a file on a storage medium accessible.
A motor vehicle navigation or multimedia computer system comprising: a central processor with associated memory and a manual input unit; an output unit and a reader for a bulk storage medium. the invention describes a navigation or multimedia system in which it is checked to see if a user has permission to access files, such as roadmap data.
The user must first enter a first and a second scrambled code (PIN and ACW) into the navigation system in accordance with an inventive method for enabling the use rights on a file. Vectors are created from these codes. First, the navigation system’s device ID and the first PIN with a scrambled code are entered used to calculate a key k.