Patent ID: 6839626

Claim:
A navigation apparatus comprising: positional information acquiring means for acquiring positional information of a portable terminal apparatus; acceleration detecting means for detecting acceleration produced in connection with movement of said portable terminal apparatus; walking pattern acquiring means for acquiring a walking pattern of a user from acceleration data detected by said acceleration detecting means; temporal information acquiring means for acquiring temporal information; course data storage means for storing thereinto as course data the positional information of the portable terminal apparatus, the walking pattern of said user, and a present time instant; walking pace monitoring means for reading said course data from the course data storage means when the user walks along a course whose data has been stored in said course data storage means, and for monitoring both a present walking pace of the user and a past walking pace of said user when said user walked along said course in the past based upon the temporal information which is contained in said read course data; and providing means for providing a message related to the present walking pace to said user in response to a monitoring result of said walking pace monitoring means.