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    • 7. 发明申请
    • Probabilistic reverse geocoding
    • 概率反向地理编码
    • US20100088019A1
    • 2010-04-08
    • US12588143
    • 2009-10-06
    • Bob BarcklayJohn HahnKevin Tsurutome
    • Bob BarcklayJohn HahnKevin Tsurutome
    • G01C21/36
    • G01C21/34G01C21/20G01C21/26G01C21/30G01C21/3415
    • The accuracy of a reverse geocode for a GPS fix in a mobile phone navigation device is improved significantly by considering together the user's last known location on an original route, the elapsed time between the last known location on the original route and the latest GPS fix, and the likelihood that the user could have traveled from the last known location on the original route to one of numerous candidate locations (generated from the reverse geocode) in the elapsed time. The navigation server relies only on a GPS fix, timestamps, and a back-end routing database to provide improved or superior accuracy of reverse geocoding a GPS fix (selection of a point on a road) when a relevant user has deviated from the intended route. The reverse geocoding allows for accurate and functional re-routing capabilities.
    • 通过考虑用户在原始路线上的最后一个已知位置,原始路线上的最后一个已知位置与最新的GPS定位之间的经过时间,将移动电话导航设备中的GPS修复的反向地理编码的精度大大提高, 以及在经过的时间内用户可能已经从原始路线上的最后一个已知位置行进到许多候选位置之一(由反向地理编码生成)的可能性。 导航服务器仅依赖于GPS定位点,时间戳和后端路由数据库,以便当相关用户偏离预期路线时,提供GPS定位(GPS选项)对路线进行反向地理编码的改进或更高精度 。 反向地理编码允许准确和功能重新路由功能。