METHOD AND APPARATUS OF ROUTE GUIDANCE
    2.
    发明申请
    METHOD AND APPARATUS OF ROUTE GUIDANCE 有权
    路由指南的方法和装置

    公开(公告)号:US20120143504A1

    公开(公告)日:2012-06-07

    申请号:US13313628

    申请日:2011-12-07

    IPC分类号: G01C21/34

    摘要: Systems and methods of route guidance on a user device are provided. In one aspect, a system and method transmit partitions of map data to a client device. Each map partition may contain road geometries, road names, road network topology, or any other information needed to provide turn-by-turn navigation or driving directions within the partition. Each map partition may be encoded with enough data to allow them to be stitched together to form a larger map. Map partitions may be fetched along each route to be used in the event of a network outage or other loss of network connectivity. For example, if a user deviates from the original route and a network outage occurs, the map data may be assembled and a routing algorithm may be applied to the map data in order to direct the user back to the original route.

    摘要翻译: 提供了用户设备上路由引导的系统和方法。 在一个方面,系统和方法将地图数据的分区发送到客户端设备。 每个地图分区可能包含道路几何形状,道路名称,道路网络拓扑结构或在分区内提供逐个导航或行驶方向所需的任何其他信息。 每个地图分区可以用足够的数据进行编码,以便将它们拼接在一起以形成更大的地图。 映射分区可以沿着每个路由获取,以在网络中断或其他网络连接丢失的情况下使用。 例如,如果用户偏离原始路由并发生网络中断,则可以组合地图数据,并且可以将路由算法应用于地图数据,以便将用户引导回原始路线。

    Regional map zoom tables
    10.
    发明授权
    Regional map zoom tables 有权
    区域地图缩放表

    公开(公告)号:US08363068B1

    公开(公告)日:2013-01-29

    申请号:US13551312

    申请日:2012-07-17

    IPC分类号: G09G5/00

    摘要: A method for providing map data to a client device includes receiving, at a server from the client device over a network, a request for parameters related to map data for a region of interest, where each region of interest is a separate geographic area. The method also includes providing, for use by the client device, a local zoom table indicating each zoom level for which new map data is available and usable by the client to determine whether or not to request new map data in response to a zoom command. Providing the local zoom table includes generating the local zoom table by analyzing tile data from multiple zoom levels to determine a progression order of map tile zooms to be requested by the client.

    摘要翻译: 用于向客户端设备提供地图数据的方法包括:通过网络从客户端设备在服务器处接收与感兴趣区域的地图数据相关的参数的请求,其中每个感兴趣区域是单独的地理区域。 该方法还包括为客户端设备提供指示每个缩放级别的局部缩放表,该缩放级别用于新的地图数据可供客户端使用并可用于确定是否响应于缩放命令来请求新的地图数据。 提供局部缩放表包括通过分析来自多个缩放级别的瓦片数据来生成局部缩放表,以确定由客户请求的地图瓦片缩放的进行顺序。