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    • 1. 发明授权
    • Navigation device
    • 导航设备
    • US08315796B2
    • 2012-11-20
    • US12742699
    • 2008-09-10
    • Yoshihisa YamaguchiTakashi NakagawaToyoaki KitanoHideto MiyazakiTsutomu MatsubaraKatsuya Kawai
    • Yoshihisa YamaguchiTakashi NakagawaToyoaki KitanoHideto MiyazakiTsutomu MatsubaraKatsuya Kawai
    • G01C21/34
    • G01C21/36G08G1/096861G09B29/007G09B29/10
    • A navigation device includes a map database 5 that holds map data; a location and direction measurement unit 4 that measures the current location and direction of a vehicle; a route calculation unit 12 that, based on map data read from the map database 5, calculates a route from the current location measured by the location and direction measurement unit to a destination; a camera 7 that captures video images ahead of the vehicle; a video image acquisition unit 8 that acquires the video images ahead of the vehicle captured by the camera; a road width acquisition unit 16 that, based on road width data included in the map data read from the map database, calculates the width of a road segment that enters last into an intersection to which the vehicle is to be guided from among road segments that make up the route calculated by the route calculation unit; a video image composition processing unit 14 that limits the length of a portion that indicates a turning direction of a route guide arrow to the road width calculated by the road width acquisition unit, and that composes the arrow onto the video images acquired by the video image acquisition unit in a superimposing manner; and a display unit 10 that displays the video image composed by the video image composition processing unit.
    • 导航装置包括保存地图数据的地图数据库5; 测量车辆的当前位置和方向的位置和方向测量单元4; 基于从地图数据库5读取的地图数据计算从由位置和方向测量单元测量的当前位置到目的地的路线的路线计算单元12; 相机7,其捕获车辆前方的视频图像; 获取摄像机拍摄的车辆前方的视频图像的视频图像获取单元8; 道路宽度获取单元16,其基于从地图数据库读取的地图数据中包括的道路宽度数据,在从道路段的路段中计算最后进入车辆的交叉路口的路段的宽度, 组成由路线计算单元计算的路线; 视频图像构图处理单元14,其将指示路线引导箭头的转动方向的部分的长度限制为由道路宽度获取单元计算的道路宽度,并且将该箭头组合到由视频图像获取的视频图像上 采购单位重叠; 以及显示单元10,显示由视频图像构图处理单元组成的视频图像。