| 摘要 |
To provide a contents acquiring device, a contents acquiring method, a contents server and a contents acquiring system which can minimize an acquisition request for contents data and can acquire contents data having a current version as much as possible. By using a valid term previously held by the contents acquiring device or a valid term of the contents added during contents acquisition, it is previously decided in the device whether the contents are to be updated or not, thereby transmitting an acquisition request to be an access to a contents server for storing contents data requested to be acquired through a network infra.
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