Dynamic, multiple-route navigation apparatus and method for guiding a moving object

A navigation apparatus mounted on a moving object and including an input section, a central processing section, and a display section, whereby when an initial position of said moving object and a destination for said moving object are provided to said central processing section through said input section, said central processing section produces at least one route along which said moving object can reach said destination by using map data stored in a memory section, said central processing section comprising:

• means for repeatedly obtaining and repeatedly updating a current position of said moving object as said current position varies from said initial position during the movement of said moving object;
• possible route operation means for repeatedly calculating and repeatedly updating two or more possible routes from said current position to said destination, even when said moving object departs from a previously calculated possible route, by using data of said current position, said destination, and said map data stored in said memory section, any one of said two or more possible routes connecting said current position and said destination;
• and
• means for repeatedly updating and indicating said current position, said destination, and said two or more possible routes on said display section whereby at least one possible route is always provided from said current position to said destination.