发明名称 |
METHOD AND APPARATUS OF ROUTE GUIDANCE |
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. |
申请公布号 |
EP2649602(A2) |
申请公布日期 |
2013.10.16 |
申请号 |
EP20110847314 |
申请日期 |
2011.12.07 |
申请人 |
GOOGLE INC. |
发明人 |
KALAI, ILJYA;ITO, KEITH;ULANOV, ANDREY, YURYEVICH;MILLER, ANDREW, TESCH;SILISKI, MICHAEL |
分类号 |
G08G1/0969;G01C21/32;G01C21/34 |
主分类号 |
G08G1/0969 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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