| 摘要 |
PROBLEM TO BE SOLVED: To make content delivery from a server device usable substantially in an equal manner as in content viewing while connecting with a delivery site. SOLUTION: The server device 100 manages delivery contents, relevant information thereof and site delivery information describing site-based content lists of contents to be delivered which are divided to some sites and delivering logical addresses of individual contents, and assigns an acquisition logical address of site delivery information to a delivery content as meta information through a network based on a delivery request. The client device 200 acquires meta information from the delivery content, refers to site delivery information from the meta information, compares a content list delivered in the same site from the same site delivery information with a content list belonging to the same site owned by itself, extracts contents as difference and respective delivery logical addresses thereof, and acquires the contents of the difference by the addresses. COPYRIGHT: (C)2007,JPO&INPIT
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