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    • 47. 发明授权
    • Vehicular navigation system providing direction data
    • 车载导航系统提供方向数据
    • US5938718A
    • 1999-08-17
    • US524428
    • 1995-09-06
    • Kyomi MorimotoKazuteru MaekawaAkimasa NanbaWataru Ishikawa
    • Kyomi MorimotoKazuteru MaekawaAkimasa NanbaWataru Ishikawa
    • G01C21/36G01C21/00G06F165/00
    • G01C21/3629G01C21/3632G01C21/3644G01C21/3655G01C21/3658G01C21/367
    • In order to provide a driver with guidance for a direction of travel without confusing the driver even in a case where the angular difference between an approach road and a departing road at a branch point is very small or even when a branch point has a complicated shape, a navigation system is provided with present-position sensor for calculating present position of the vehicle; an input for entering information necessary for calculating a route; an output for giving notification of information for carrying out route guidance; an information storage device in which all data necessary to carry out route guidance has been stored; route calculator for calculating a route based upon the information entered by the input; route storage for temporarily storing the route calculated by the route calculator; and a guidance control unit for outputting guidance information relating to the route to the output. The information storage device stores branch-point data and road data connected to branch points and has direction data indicative of a departing road with respect to an approach road connected thereto by a branch point. The guidance control unit outputs the guidance information to the output based upon the direction data.
    • 为了给驾驶员提供驾驶方向的指引,即使在分路点的进场道路与离开道路之间的角度差非常小的情况下,甚至当分支点具有复杂形状时,也不会混淆驾驶员 导航系统设置有用于计算车辆的当前位置的当前位置传感器; 用于输入计算路线所需的信息的输入; 用于通知进行路线引导的信息的输出; 信息存储装置,其中已经存储了执行路线引导所需的所有数据; 路线计算器,用于基于由输入输入的信息计算路线; 用于临时存储由路线计算器计算的路线的路线存储; 以及引导控制单元,用于输出与输出相关的路线的引导信息。 信息存储装置存储分支点数据和连接到分支点的道路数据,并且具有指示相对于通过分支点连接到的进场道路的离开道路的方向数据。 引导控制单元基于方向数据将引导信息输出到输出。