A search method and apparatus for a navigation system finds accessible points of interest (POI) along the route to the destination in a flexible manner. The navigation system changes its search range when the geographic condition warrants expansion of the search range. The search method is comprised...http://www.google.ca/patents/US20060089788?utm_source=gb-gplus-sharePatent US20060089788 - Method and apparatus for navigation system for searching easily accessible POI along route
