Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate
2006-06-22
2009-02-24
Hellner, Mark (Department: 3663)
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
C713S183000
Reexamination Certificate
active
07496448
ABSTRACT:
A navigation unit having a data decryption algorithm is connected to a data storage and reading unit having a storage medium storing map data, the data storage and reading unit having a nonalterable access number, and the navigation unit connects to a broadcast radio receiver. The navigation unit receives, through the broadcast radio receiver, broadcast radio signals having encrypted information. The navigation unit reads the nonalterable access number, processes the number through a hash algorithm, and compares the processed access number to another access number to decrypt the encrypted information.
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Bury Sp. z.o.o.
Hellner Mark
Whitham Curtis Christofferson & Cook PC
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