Patent ID: 8229667

Claim:
A method of displaying a background sky in a navigation system, the method comprising: storing and maintaining map data and background sky image data with respect to one or more directions of the map data in a database of the navigation system; detecting a driving direction angle of a vehicle; computing a position of a background sky image corresponding to the detected driving direction angle, wherein the computing comprises: computing a start position (SP) of the background sky image corresponding to the detected driving direction angle and computing an end position (EP) of the background sky image corresponding to the detected driving direction angle; extracting background sky image data corresponding to the computed position of the background sky image from the database, wherein the extracting extracts background sky image data corresponding to an area from the SP of the background sky image to the EP of the background sky image from the background sky image data stored in the database; and displaying the extracted background sky image data as a background sky with respect to the map data on a navigation screen of the navigation system.