A method and apparatus for Global Positioning System (GPS) navigation is configured to automatically set an optimal GPS reception period and optimal map contents according to a moving speed of a user in a navigation system using a GPS terminal. When the moving speed of the user is considered, power efficiency...http://www.google.com/patents/US20100114483?utm_source=gb-gplus-sharePatent US20100114483 - Method and apparatus for automatically optimizing and setting a GPS reception period and map contents