Profile information synchronization system, profile information synchronization method, mobile terminal device and profile information synchronization server

摘要

Profile information of mobile terminal devices of users is synchronized by transmitting profile information of a user of a mobile terminal device along with a group identification information to a profile information synchronization server, registering by the server received profile information in correspondence with received group identification information, based upon the transmitting, extracting by the server one or more of the profile information managed based upon the received group identification information of the group to which the user of the terminal device belongs including new profile information that the terminal device has not recorded and transmitting the extracted profile information to the terminal device. The terminal device obtains the profile information of the group to which the user of the terminal device belongs including the new profile information that the terminal device itself has not recorded, from the server based upon the group identification information.