초록 ▼

A navigation system and method in which geographic data are transmitted in portions, as needed, to end users' computing platforms from a central geographic database and used by the end users' computing platforms to provide navigation-related features to end users as the end users travel along roads

A navigation system and method in which geographic data are transmitted in portions, as needed, to end users' computing platforms from a central geographic database and used by the end users' computing platforms to provide navigation-related features to end users as the end users travel along roads in a geographic region. Each portion of data transmitted to each end user includes (a) data that represent road portions located in proximity to the road portion upon which the end user is located and that have a same rank as the road portion upon which the end user is located and (a) data that represent road portions having ranks other than the rank of the road portion upon which the end user is located but that are accessible within a predetermined threshold by vehicle from the road portions located in proximity to the road portion upon which the end user is located that have the same rank as the road portion upon which the end user is located, wherein a rank of a road corresponds to a classification such that roads having a higher rank are traversable generally faster and carry generally higher volumes of traffic than roads of a lesser rank.

대표청구항 ▼

[ We claim:] [1.]1. In a navigation system in which geographic data are transmitted to an end user's computing platform and used by the end user's computing platform to provide navigation-related features to an end user as the end user travels along roads in a geographic region, an improved method c

[ We claim:] [1.]1. In a navigation system in which geographic data are transmitted to an end user's computing platform and used by the end user's computing platform to provide navigation-related features to an end user as the end user travels along roads in a geographic region, an improved method comprising:determining a roadway portion on which the end user is located; andtransmitting a first portion of data to the end user's computing platform, wherein the first portion of data includea. data that represent portions of roads located in proximity to the roadway portion upon which the end user is located and that have a same rank as the rank of the roadway portion upon which the end user is located, wherein a rank of a roadway portion corresponds to a classification of the road of which the roadway portion is a part such that roads having a higher rank are traversable generally faster and carry generally higher volumes of traffic than roads of a lesser rank; andb. data that represent portions of roads having ranks other than the rank of the roadway portion upon which the end user is located, wherein these portions of roads are accessible within a predetermined threshold by vehicles from the roads located in proximity to the roadway portion upon which the end user is located and that have the same rank as the roadway portion upon which the end user is located.