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公开(公告)号:US5600723A
公开(公告)日:1997-02-04
申请号:US362722
申请日:1994-12-23
申请人: Phillip J. Woodall , Daniel R. Danowski , Anthony Bernot , Karl H. Blomgren , Richard M. Sturgeon
发明人: Phillip J. Woodall , Daniel R. Danowski , Anthony Bernot , Karl H. Blomgren , Richard M. Sturgeon
CPC分类号: G07C9/00309 , B60R25/04 , B60R25/042 , G07C2009/00412 , G07C2009/005 , G07C2009/00761
摘要: A vehicle anti-theft system in the form of a mechanically interengagable electronic key and lock includes stored key and vehicle identifiers in both the key and in the lock. A random number is generated in the lock each time the vehicle ignition switch is closed and that random number is used to encode one of the identifiers for transmission to the key. The key uses the corresponding stored identifier to recover the random number. The other stored identifier is then encoded using the recovered random number and the encoded other identifier is returned to the lock. The lock uses the generated random number to recover the second identifier for comparison to its stored value. If the comparison fails, vehicle operation is prevented. The system may effect several trials, each using a new random number before refusing further attempts. The lock electronics is preferably disposed in the vehicle fuel tank and controls operation of the vehicle fuel pump.
摘要翻译: 机械可互相接合的电子钥匙和锁的形式的车辆防盗系统包括钥匙和锁中的存储钥匙和车辆标识符。 每当车辆点火开关闭合时,在锁中产生一个随机数,并且使用该随机数来对其中一个标识符进行编码以传输给钥匙。 密钥使用相应的存储标识符来恢复随机数。 然后使用恢复的随机数对另一个存储的标识符进行编码,并且将编码的其他标识符返回到锁。 锁使用生成的随机数来恢复第二个标识符,以便与其存储的值进行比较。 如果比较失败,则防止车辆操作。 该系统可能会影响几项试验,每次尝试使用新的随机数,然后拒绝进一步尝试。 锁定电子装置优选地设置在车辆燃料箱中并控制车辆燃料泵的操作。