| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent an operator from requiring complicated labor when an operation program and various information are renewed on a navigation terminal. SOLUTION: When a navigation server 12 renews a program operated by map information stored to an information server 13, position information, traffic information and a navigation terminal 11, renewal information indicating renewal working in the navigation terminal 11 is produced to be sent to a broadcasting station 14. The broadcasting station 14 broadcasts the renewal information by a satellite digital broadcast. The navigation terminal 11 receiving the broadcast is automatically connected to the navigation server 12 through cellular communication lines (telephone line), and renewed information and the various information are acquired.</p> |
