Patent ID: 8243312

Claim:
A network synchronizing system including a plurality of information processing apparatuses, the system comprising: a first information processing apparatus including, a first synchronization common recording unit configured to record personal setting data of one or more registered users who can use the first information processing apparatus so as to share the personal setting data with one or more other information processing apparatuses of the plurality of information processing apparatuses, a first setting data unit configured to record personal setting data of one or more registered users who can use the first information processing apparatus, and a first synchronization control unit configured to compare the personal setting data of said one or more users recorded in the first setting data unit and the personal setting data of said one or more users recorded in the first synchronization common recording unit and update the personal setting data of said one or more users recorded in the first setting data unit or the first synchronization common recording unit with the latest personal setting data for each user; and a second information processing apparatus including, a second setting data unit configured to record personal setting data of one or more registered users who can use the second information processing apparatus, and a second synchronization control unit configured to, compare the personal setting data of said one or more users recorded in the second setting data unit and the personal setting data of said one or more users recorded in the first synchronization common recording unit, update the personal setting data of said one or more users recorded in the second setting data unit or the first synchronization common recording unit with the latest personal setting data for each user, and determine if a user having personal setting data recorded in the second setting data unit and a user having personal setting data recorded in the first synchronization common recording unit are the same user if data uniquely provided for the user in the personal setting data of the user recorded in the second setting data unit and data uniquely provided for the user in the personal setting data of the user recorded in the first synchronization common recording unit are the same.