Patent ID: 8914229
Filing Date: 2014-12-16
Classification: G01C

Abstract:
1. A system for transferring navigation data, the system comprising: a map module configured to receive, at a first mobile device, the navigation data for navigating from a beginning location to a target destination, the navigation data comprising the target destination, directions from the beginning location to the target destination, and map tiles covering a geographic area comprising a path from the beginning location to the target destination; an extraction module configured to determine a portion of the navigation data, the portion of the navigation data comprising the target destination, directions from a current location to the target destination, and a subset of the map tiles that cover a portion of the path from the current location to the target destination, wherein the current location is different from the beginning location and the current location is along the path from the beginning location to the target destination; and a communications module configured to transmit the portion of the navigation data from the first mobile device to a second mobile device based on a battery level of the first mobile device, wherein the portion of the navigation data excludes map tiles covering a portion of the path from the beginning location to the current location.