Systems and methods for loading and tracking maps on a vehicle

Abstract

A method and systems for loading and tracking maps on a moving vehicle. One method includes obtaining a geographic location of a system on a vehicle, obtaining a boundary corresponding to a contiguous geographical boundary area around the geographic location of the system, loading map data comprising a plurality of map data tiles each including a portion of the geographical boundary area, the plurality of map data tiles including a center tile having a point corresponding to the system location and surrounding map data tiles. The method further includes obtaining an updated system location, and if the updated geographic location is outside of the boundary area, obtaining an updated boundary centered on the updated geographic location and loading map data based on the updated boundary such that the resulting loaded map data includes a center tile and map data tiles surrounding the center tile that intersect the geographical boundary area.

What is claimed is: 
     
         1 . A method implemented on a device on a vehicle, the device having at least one processor and a storage component coupled to the processor, the method comprising:
 obtaining, by the at least one processor, a geographic location of the device;   obtaining a boundary corresponding to a contiguous geographical boundary area around the geographic location of the device;   loading map data comprising a plurality of map data tiles from the storage component to a memory of the device, each of the plurality of map data tiles including a portion of the geographical boundary area, the geographical boundary area corresponding to a portion of the loaded map data, wherein the plurality of map data tiles includes a center tile having a point corresponding to the geographic location of the device and surrounding map data tiles, and wherein the boundary is centered on the center tile and dimensioned such that the geographical boundary area intersects the surrounding map data tiles; and   while the vehicle is in motion:
 obtaining, by the at least one processor, an updated geographic location of the device, 
 determining the position of the updated geographic location relative to the boundary area, and 
   in response to determining the updated geographic location is outside of the boundary area, obtaining an updated boundary corresponding to an updated geographic area centered on the updated geographic location and loading map data from the storage component to the memory of the device such that the resulting loaded map data includes:
 a center tile having a point corresponding to the updated geographic location of the device, and 
 map data tiles surrounding the center tile that intersect the geographical boundary area.