Patent ID: 6546335
Filing Date: 2003-04-08
Classification: G01C

Abstract:
A navigation system, comprising:a mass storage device adapted to store navigation data; a server adapted to communicate with the mass storage; and a navigation device adapted to communicate with and retrieve navigation data from the server via a communication channel, wherein the navigation device includes a processor in communication with a memory, wherein the processor and memory cooperate to generate a current score associated with a current position and a current bearing of a device, the current score is used to determine whether the device is located on a planed route for the device and is biased to map the current position to a position on the planned route for the device and whether the current score is within a tolerance level, wherein one or more locations receive one or more location scores based on the planned route, and wherein the current score is regularly compared to the location scores to determine if the current score is within the tolerance level.