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    • 9. 发明授权
    • Control information storage apparatus
    • 控制信息存储装置
    • US08073616B2
    • 2011-12-06
    • US12069137
    • 2008-02-07
    • Kazunao Yamada
    • Kazunao Yamada
    • G01C21/30
    • G01C21/26
    • Vehicle control data is stored in a database of a vehicle control information storage apparatus of the present invention by a unit of road segment. When the same vehicle travels the same road segment for plural times, vehicle speed is averaged for storage as the vehicle control information in the database. Further, learning data has a value that is smaller than a threshold for the segment next to a current segment with a fulfillment of other conditions, the data is combined before storage in the database, thereby achieving a smaller storage volume in the database for the same amount of control information.
    • 车辆控制数据以路段为单位存储在本发明的车辆控制信息存储装置的数据库中。 当同一车辆行驶相同的道路段多次时,车速被平均以作为数据库中的车辆控制信息进行存储。 此外,学习数据的值小于具有其他条件的当前段的旁边的段的阈值,则数据在数据库中存储之前被组合,从而在数据库中实现较小的存储量 控制信息量。
    • 10. 发明授权
    • Map evaluation system and map evaluation method
    • 地图评估系统和地图评估方法
    • US07831389B2
    • 2010-11-09
    • US11708160
    • 2007-02-19
    • Kazunao Yamada
    • Kazunao Yamada
    • G01C21/00G01C21/30G01C21/32
    • G01C21/30
    • An absolute position detector of a navigation device detects an absolute position of a vehicle. An on-map position of the vehicle is acquired based on the detected absolute position to be on a road map indicated by map data stored in the navigation device. Absolute positions detected by the absolute position detector are stored in association with on-map positions acquired based on the detected absolute positions as travel track information when the vehicle travels. An error of the map data as a reliability degree of the map data is set by comparing the travel track information with the map data.
    • 导航装置的绝对位置检测器检测车辆的绝对位置。 基于检测到的绝对位置来获取车辆的地图上位置,该绝对位置将位于由存储在导航装置中的地图数据所指示的路线图上。 与绝对位置检测器检测到的绝对位置相关联地存储在基于检测到的绝对位置的地图上位置作为车辆行驶时的行驶轨道信息。 通过将行驶轨道信息与地图数据进行比较来设定地图数据作为地图数据的可靠度的错误。