Patent ID: 7395268

Claim:
An address link system including a client terminal having a plurality of data files created by different software and having a plurality of personal data items, each item having an item name, a value, and an update date, wherein said client terminal comprises means for registering the personal data items according to an address linker protocol to be address searchable and retrievable from the data files based on a search request name; means for retrieving said personal data items registered in said data files by address searching said client data files based on a user-input search request name and the address linker protocol, and outputting a retrieval result having personal data items associated with the user-input search request name; means for determining, in response to the retrieval result having more than one personal data item having the same item name, which of said retrieved personal data items is new or old, based on said items' respective update dates; means for selecting new data based on a result of the determining and highlighting said new data on a screen; and means for reconstructing said new data into a single file having a tree data structure and registering the reconstructed single file of new data, wherein the address linker protocol is LDAP (Lightweight Directory Access Protocol).