Map data access method for navigation and navigation system
    1.
    发明授权
    Map data access method for navigation and navigation system 有权
    导航导航系统的地图数据访问方式

    公开(公告)号:US06233520B1

    公开(公告)日:2001-05-15

    申请号:US09249163

    申请日:1999-02-12

    IPC分类号: G06F1730

    CPC分类号: G01C21/32 Y10S707/99931

    摘要: There is provided a map data access method and device capable of reading out from a recording medium the map data requested by a navigation system and providing them to the system whether C language, etc. or JAVA (trademark), etc. is employed to constitute a processing program on the navigation system side. In the recording medium, the map data and a reading method of the data are recorded in pairs in a map data section and a method section, respectively. When a navigation function section requests the map data, a data access section reads out desired data in a method (program) read out from the method section according to a requested application programming interface (API). The data read out are supplied as a byte array object to the navigation function section.

    摘要翻译: 提供了一种能够从记录介质读出由导航系统请求的地图数据并将其提供给系统的地图数据访问方法和装置,无论是使用C语言等还是JAVA(商标)等构成 导航系统侧的处理程序。 在记录介质中,地图数据和数据的读取方法分别成对地记录在地图数据部分和方法部分中。 当导航功能部分请求地图数据时,数据访问部分根据请求的应用编程接口(API)从方法部分读出的方法(程序)中读出所需的数据。 读出的数据作为字节数组对象提供给导航功能部分。