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AssigneeXanavi Informatics Corporation
InventorsManabu Kato, Deepak Ramaswamy, Sadanori Horiguchi
Estimating the term…
A vehicle navigation system for use with a traffic information broadcast system which transmits traffic data relating to primary road segments and a communication system which transmits traffic data relating to road segments in a local geographic area. A broadcast receiver receives the broadcast traffic data from the broadcast system and stores the received data. A communication transmitter, when activated, transmits a data request to the communication system. A communication receiver receives the local traffic data from the communication system in response to the data request while a processor displays traffic information on a display screen corresponding to the received broadcast traffic data and the received local traffic data. The local traffic data includes both traffic information relating to local road segments as well as non-traffic temporal events, such as weather, and time-related events which affect traffic flow. A database of historic traffic flow for the road segments is periodically updated to reflect new traffic data.
A method for maintaining road segment data in a vehicle navigation system comprising the steps of:
Apparatus for maintaining road segment data in a vehicle navigation system comprising:
A method for maintaining road segment traffic flow data in a vehicle navigation system comprising the steps of:
Apparatus for maintaining road segment data in a vehicle navigation system comprising:
Dependencies are inferred from the claim text.