A problem to be solved by the present invention is that a host vehicle position calculated on the basis of a GNSS is affected by shielding, reflection, diffraction, and the like of a positioning radio wave due to a structure, depending on a structure envir...

A navigation apparatus acquires geographic information from a server apparatus. When the navigation apparatus does not store any geographic information that provides a continuous route from the starting point to a destination point, it transmits data of th...

The present invention relates to a method for managing map data for a vehicle using a navigation system, wherein upon display of the map data, memory loading for the display of the map data can be quickly performed by reducing the number of access to a phy...

A navigation equipment (S) for performing the navigation processing by the use of the information from a plurality of hard disk recording and reproducing units which is provided with: a hard disk recording and reproducing unit (13) including a hard disk, i...