Patent ID: 7401065
Filing Date: 2008-07-15
Classification: H04L,Y10S

Abstract:
1. A client terminal used in a contents download system, comprising: a storage unit configured to store a content, which includes a plurality of sub-contents, and a download descriptor, which contains a plurality of attribution information corresponding respectively to the sub-contents, said attribution information comprising version information of the corresponding sub-content; a receiving unit configured to receive a download descriptor from a server; and a comparing unit configured to compare the download descriptor stored in the storage unit with the download descriptor received from the server; and a transmitting unit configured to transmit a request for at least one updated sub-content to the server, so as to download the at least one updated sub-content from the server, if the comparing unit determines that at least one sub-content of the content stored in the storage unit has been updated based on a comparison of at least the version information in the attribution information of the download descriptor stored in the storage unit with at least version information of attribution information in the download descriptor received from the server.