Patent ID: 7870315

Claim:
A method of managing data of a portable device, the method comprising: generating a virtual device corresponding to the portable device in a storage unit of a data management apparatus; transmitting information on at least one content file to the virtual device and storing the information on the at least one content file in the virtual device; and if the portable device is connected to the data management apparatus, synchronizing the portable device with the virtual device by transmitting the at least one content file to the portable device with reference to the information stored in the virtual device, wherein the at least one content file is stored separately from the virtual device in at least one of the storage unit and a content server remote from the data management apparatus, the information on the at least one content file comprises a storage location of each of the at least one content file, and the synchronizing of the portable device with the virtual device comprises searching the at least one content file based on the storage location of each of the at least one content file and transmitting the at least one content file to the portable device.