| 摘要 |
In a CP server, when a copyright determination unit determines that requested content is copyrighted content, a set up unit sets up a copyrighted content public URL comprising information that can specify a memory region where copyrighted content is stored, and corresponding to a content delivery request by a cellular phone, a transmission unit transmits the copyrighted content public URL together with the copyrighted content, to the cellular phone. Then, a cellular phone acquires the copyrighted content public URL together with the copyrighted content, and attaches the copyrighted content public URL to an electronic mail message which is transmitted to another cellular phone. The other cellular phone can use the received copyrighted content public URL to request the CP server to deliver the copyrighted content.
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