Removable data support controlled by key with e.g. mapping information for use in motor vehicle - uses validation circuits on data support that requires user to plug-in electronic key card to allow module to be used

摘要

The support is connected to a system that uses the data under control of an electronic key. The data support has a recess to accept a removable memory card (21) containing electronic control data. The data support has a reader (15) that extracts data from the card and transmits it to a validation unit (16). The validation compares the data read from the card with the electronic key to authorise the use of the data on the data support. The data support is in the form of a card carrying electronic memory. The card has connections (3) at one end to allow it to be plugged into a card reader, and a recess (12) at the opposite end to accept the key card. ADVANTAGE - Protection of plug-in electronic map modules against illicit use or copying.