发明名称 |
Car navigation map update system and car navigation terminal |
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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申请公布号 |
US6546334(B1) |
申请公布日期 |
2003.04.08 |
申请号 |
US20000604970 |
申请日期 |
2000.06.28 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
FUKUCHI YUSHI;ABUKAWA MASAHIRO;IZUMI HEIKAN |
分类号 |
G01C21/00;G01C21/26;G01S19/48;G08G1/0969;G09B29/00;G09B29/10;(IPC1-7):G06G7/78;G06F12/00;G06F17/24;H04B7/185 |
主分类号 |
G01C21/00 |
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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