Automatic update system, automatic updating method, and program therefor

Abstract

An automatic update system is provided that is capable of constantly maintaining a current historical database with high accuracy status by automatically updating the historical database. The automatic update system includes: a raw data saving unit for obtaining position information of a vehicle and saving the information in a raw data storage unit; a data conversion unit for calculating a link travel time of the vehicle and saving the link travel time of the vehicle in an intermediate result storage unit; and an historical database update unit for checking a number of data of the link travel time saved in the intermediate result storage unit, calculating the average value of the link travel time when the number is equal to or higher than a predetermined number of data for generating a reliable database, and updating an historical database using the average value.

Dependencies are inferred from the claim text.