公开(公告)号：US06772090B2

公开(公告)日：2004-08-03

申请号：US09769679

申请日：2001-01-25

申请人： Brendon Hutton ,  Fanie Duvenhage

发明人： Brendon Hutton ,  Fanie Duvenhage

IPC分类号： G01C2200

CPC分类号： G06F7/5055 ,  G01B3/12 ,  G01C22/02

摘要： An improved vehicle odometer is provided with an encoder and a microcontroller. The encoder has a unique key that configures an encryption algorithm. The encryption algorithm can be in the form of circuitry or software or any combination there between. The encoder receives a increment signal from the vehicle indicating that the vehicle has traveled a pre-determined distance. The encoder then increments the odometer-related value and then encrypts it with the encryption algorithm. The encoder then wraps the encrypted odometer-related value into a data packet with a serial number. Only a suitably equipped computing device, such as a microcontroller, identify and correctly decrypt and process the encrypted odometer-related value, thereby preventing the tampering of the vehicle's odometer.

摘要翻译： 改进的车辆里程表设置有编码器和微控制器。 编码器具有配置加密算法的唯一密钥。 加密算法可以是电路或软件的形式或其间的任何组合。 编码器接收来自车辆的增量信号，指示车辆行驶了预定距离。 然后，编码器增加里程表相关值，然后使用加密算法对其进行加密。 然后，编码器将加密的里程表相关值包装成具有序列号的数据分组。 只有适当配备的计算设备（如微控制器）才能识别并正确解密和处理加密的里程计相关值，从而防止车辆里程表的篡改。