Patent ID: 8170798

Claim:
A navigation system comprising: an input device for making an operation guidance display request for display of an operation guidance according to a user's manipulation; a display device for combining an operation guidance and a reduced operation screen corresponding to said operation guidance to display them; a transition graph storage unit in which a series of operation screens leading to display of the final operation screen required to implement the user's intention of the manipulation done by the user are stored in a form of graph structure; a transition path extracting unit for referring to said transition graph storage unit, and for extracting transition paths respectively leading to nodes which construct said graph; and a control device equipped with an automatic operation management unit, wherein every time when an initial value is set up for each of said transition paths, and an operation screen of said transition path is displayed, said automatic operation management unit counts a number of times that a corresponding operation guidance is displayed and compares said counted number of times that the operation guidance is displayed with a certain number of operation guidance display times which is predetermined as a threshold so as to judge whether said automatic operation management unit waits for the user's selection operation or makes an automatic transition to the final operation screen.