Title: In-vehicle terminal, server, traffic information system, link data update method, and traffic information provision method
Application Number: 200610151637 Application Date: 2006.09.07
Publication Number: 1932446 Publication Date: 2007.03.21
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01C21/26;G01C21/36;G08G1/09;G08G1/0969;G09B29/00;G09B29/10
Applicant(s) Name: Hitachi Ltd. Address:
Inventor(s) Name:
Attorney & Agent: liujian
Abstract:
    The in-vehicle terminal includes an additional link database where link data including a temporary link ID (Identification) before being given by a server and established by an authorization device; a new and old link IDs database where a new and old link IDs table is saved wherein an established link ID of a link ID after being authorized by the authorization device and the temporary link ID are made to correspond to each other; a transmitting and receiving unit for transmitting traffic information data including the established link ID; and a processing unit for acquiring the established link ID included in the traffic information data, referring to the new and old link IDs table stored in the new and old link IDs database, acquiring the temporary link ID made to correspond to the established link ID, and based on the temporary link ID, acquiring link data from the additional link database.
Time: 48