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    • 4. 发明授权
    • Navigation system having travel path replacing function
    • 导航系统具有行驶路径替换功能
    • US06418373B1
    • 2002-07-09
    • US09649820
    • 2000-08-28
    • Masanori OmiToshihiro Ito
    • Masanori OmiToshihiro Ito
    • G08G109
    • G01C21/3484
    • In a vehicle navigation system, an initial recommended travel path between a departure point and a destination is determined using the Dijikstra method. If an external memory stores path information regarding a short-cut path that has its start point and end point on the recommended travel path, a corresponding part of the recommended travel path is replaced with the short-cut path to guide the vehicle along the modified recommended travel path. If the vehicle travels deviating from the recommended travel path, path information that specify the leaving path are collected and stored as a new short-cut path in the external memory. If the same travel path is searched for next time, the short-cut path thus stored is used to modify the recommended travel path.
    • 在车辆导航系统中,使用Dijikstra方法确定出发点和目的地之间的初始推荐行驶路径。 如果外部存储器存储关于在推荐行进路径上具有起点和终点的快速路径的路径信息,则将推荐行驶路径的相应部分替换为快速路径,以沿着修改的路线引导车辆 推荐旅行路径。 如果车辆行驶偏离推荐的行驶路径,则指定离开路径的路径信息被收集并存储为外部存储器中的新的快捷路径。 如果下次搜索相同的行进路径,则使用这样存储的快捷路径来修改推荐的行驶路径。