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1. 发明授权

US5845228A Vehicle-route computing apparatus 失效
标题翻译：车辆路线计算装置
公开(公告)号：US5845228A
公开(公告)日：1998-12-01
申请号：US718044
申请日：1996-09-16
申请人： Akio Uekawa , Ichiro Nakahori
发明人： Akio Uekawa , Ichiro Nakahori
IPC分类号： G09B29/00 , G01C21/00 , G01C21/34 , G06F17/30 , G06T11/60 , G08G1/0969 , G05D1/00 , G06F165/00
CPC分类号： G01C21/3446
摘要： Routes from a departure area to a plurality of destination areas are found as a departure-area route network data set and a plurality of such departure-area route network data sets computed for all departure areas are then stored in advance in a road-map storing memory unit 4 and a departure-area route network data storing memory unit 5. At a route-search time, a departure-area determining unit 3 determines the departure area of the vehicle to which a departure position pertains and a route-search processing means 7 uses a departure-area route network data set for the departure area determined by the departure-area determining unit 3 as well as road maps of the departure area and the vicinity of a departure position to search for guidance routes from the departure position to the destination position in a short time, presenting the guidance routes to the driver.
摘要翻译：发现从出发地区到多个目的地区域的路线作为出发地区路线网络数据集，并且对于所有出发地区计算的多个这样的离场区域路线网络数据集然后被预先存储在路线图存储存储单元4和出发区域路线网络数据存储存储单元5.在路线搜索时间，出发区域确定单元3确定出发位置所属的车辆的出发区域和路线搜索处理装置 7使用由出发区域确定单元3确定的出发区域的出发区域路线网络数据集以及出发地点和出发位置附近的路线图，以搜索从出发位置到目的地位置在短时间内，向司机介绍指导路线。

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