Patent ID: 7421339

Claim:
An apparatus for controlling a traffic information display in a navigation system, the apparatus comprising: a GPS receiver configured to receive location data from a plurality of GPS satellites; a storage unit configured to store map data and information on colors, the colors representing degrees of congestion of vehicles and being different from each other based on the degrees of congestion of vehicles; a display unit configured to display the colors based on the degrees of congestion on a travel route of a moving object; a voice processing unit configured to process and output a voice signal based on the degrees of congestion on the travel route of the moving object; an input unit configured to receive a variety of signals and setting levels based on the degree of congestion of vehicles; a wireless communication unit configured to receive a traffic information message from a traffic information center, the traffic information message including traffic information about sections of the travel route; and a control unit configured to control each aforesaid units and to perform a control operation of displaying different colors and outputting the voice signal related to corresponding sections of the travel route to indicate the traffic information about the sections of the travel route.