Patent ID: 7623854

Claim:
An information addition system that acquires data and a control signal from a hands-free apparatus and a navigation apparatus, the hands-free apparatus operative to communication with a mobile communication terminal, the hands-free apparatus comprising an address-book data storage unit operative to associate communication-partner information indicating a communication partner of the mobile communication terminal with name information corresponding to the communication-partner information and to store the associated information in a personal information database as first personal information, the navigation apparatus comprising a position detecting unit operative to detect a current position and to set a destination, the information addition system comprising: an additional information acquiring unit operative to acquire date and time information indicating a date and time when the mobile communication terminal transmits an outgoing call or receives an incoming call from the navigation apparatus as first additional information and to acquire predetermined information at the outgoing call or the incoming call as second additional information; and an information adding unit operative to identify the first personal information corresponding to the communication partner at the outgoing call or the incoming call, in the personal information database, on the basis of the communication-partner information indicating the communication partner at the outgoing call or incoming call and to associate the first and second additional information, acquired by the additional information acquiring unit, with the identified first personal information and to store the first and second additional information associated with the first personal information.