公开(公告)号：US6069410A

公开(公告)日：2000-05-30

申请号：US538154

申请日：1995-10-02

Applicant: Giovanni Degli Antoni ,  Roberto Bisiani ,  Bruno Murari

Inventor： Giovanni Degli Antoni ,  Roberto Bisiani ,  Bruno Murari

IPC: B60R25/04

CPC classification number: B60R25/04

Abstract: An anti-tampering circuit for a vehicle includes an operational circuit providing a predetermined function for the vehicle to be protected, and a control circuit connected to the operational circuit for enabling and disabling operation thereof. The control circuit includes a semiconductor substrate, a communications circuit formed on the semiconductor substrate receiving data corresponding to an identification code from at least one external source within the vehicle, and a non-volatile memory formed on the semiconductor substrate and connected to the communications circuit for storing only once a predetermined identification code. The communications circuit writes the received data to the non-volatile memory as the predetermined identification code when the control circuit is within the vehicle if the predetermined identification code has not already been stored therein. The control circuit further includes a comparator formed on the substrate for comparing the received data with the predetermined identification code and providing a comparison signal. A selector is also formed on the substrate for enabling and disabling the operational circuit responsive to the comparison signal.

Abstract translation: 一种用于车辆的防篡改电路包括为待保护的车辆提供预定功能的操作电路，以及连接到该操作电路以用于使能和禁用其的操作的控制电路。 控制电路包括半导体衬底，形成在半导体衬底上的通信电路，其接收对应于来自车辆内的至少一个外部源的识别码的数据，以及形成在半导体衬底上并连接到通信电路的非易失性存储器 用于仅存储一次预定的识别码。 当控制电路在车内时，通信电路将所接收的数据作为预定识别码写入非易失性存储器，如果预定的识别码尚未存储在车辆内。 所述控制电路还包括形成在所述衬底上的比较所述接收数据与所述预定识别码并提供比较信号的比较器。 选择器也形成在基板上，用于响应于比较信号启用和禁用操作电路。