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    • 3. 发明授权
    • Navigation system equipped with portable sub-navigation unit
    • 导航系统配备便携式子导航单元
    • US06748321B2
    • 2004-06-08
    • US10270544
    • 2002-10-16
    • Tomoo WatanabeTsuyoshi SatoTamami OdaYukitaka Saito
    • Tomoo WatanabeTsuyoshi SatoTamami OdaYukitaka Saito
    • G01C2134
    • G01C21/3688G01C21/3423
    • A navigation system comprises a navigation apparatus mounted on a vehicle and a portable information device communicable with the navigation apparatus based on a predetermined communication protocol. The navigation apparatus searches a route from a current position to a destination, and guides the searched route to the vehicle, that is, crews on board. The navigation apparatus further comprises a unit for searching a further route from a further current position to the destination in response to a predetermined command. The further current position is a position at which the unit searches the further route. The navigation apparatus further comprises a transfer unit for transferring information indicative of the further route to the portable information device. This device provides a person, who carries the device, with a further route guide by showing the further route, after the route guide performed by the navigation apparatus.
    • 导航系统包括安装在车辆上的导航装置和基于预定通信协议与导航装置通信的便携式信息装置。 导航装置搜索从当前位置到目的地的路线,并将搜索到的路线引导到车辆,即船上的船员。 导航装置还包括用于响应于预定命令从另外的当前位置到目的地搜索另外的路线的单元。 进一步的当前位置是该单元搜索进一步路线的位置。 导航装置还包括传送单元,用于将指示进一步路线的信息传送到便携式信息设备。 在由导航装置执行的路线指南之后,该装置通过示出另外的路线来向携带装置的人提供另外的路线指南。