Patent ID: 8005789
Filing Date: 2011-08-23
Classification: H04L,H04W

Abstract:
1. A server comprising: a synchronization policy management unit which acquires a synchronization policy for synchronization of multimedia content or meta data of the multimedia content with a client connected to the server, the server listed on a synchronization server list on a client, which stores a list of servers that perform synchronization; a synchronization information collector which collects log information of both a previously performed synchronization of the client and a change occurring after the previously performed synchronization, from the client; a synchronization processor which performs synchronization with the client in accordance with the log information; a change log management unit which manages a change log which records a change occurring in the multimedia content and the meta data of the multimedia content; an interface unit which transmits information of a result of the synchronization to the client; and a storage unit which includes a local content file storing the multimedia content and a content meta data database (DB) storing the meta data of the multimedia content, wherein if it is determined that only the meta data of the multimedia content has changed after the previously performed synchronization, the synchronization processor performs synchronization with the client for only the changed meta data, wherein the meta data of the multimedia content comprises a frequency of playbacks and a last play time of the multimedia content, wherein the content meta data DB is a database in which the meta data of the multimedia content is stored in the local content file is collected, and wherein the synchronization policy is individually used for each of the multimedia content and the meta data of the multimedia content.