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Car navigation map update system and car navigation terminal
Car navigation map update system and car navigation terminal
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机译:汽车导航地图更新系统及汽车导航终端
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摘要
A car navigation map update system includes map update data delivery equipment and one or more car navigation terminals. The map update data delivery equipment includes a map update data broadcasting section for broadcasting map update data by radio waves. Each car navigation terminal receives the broadcast map update data, stores the map update data in a map update data storing medium, and utilizes the map update data in connection with map information data prestored in a map data recording medium. This enables the terminals to collect latest map data using a receiver already installed in the car navigation terminals without adding a data transmitter, thereby solving a problem of a conventional car navigation system which requires a data transmitter installed in the car navigation terminal for sending a message to a host to obtain the map update data, and hence complicates the configuration and increases the cost of the system.
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