| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a recording device which gives a format for storing content data, corresponding to the need for protecting the content data. <P>SOLUTION: A memory card 10 incudes a content server 20 accordance to the condition for executing an authorization processing and includes a reply device 30 for replaying user records which communicates with the memory card, uses key data for encrypting content data, and enables the key data to be recorded. A memory unit 11 has a record unit 113 being normally accessible from the outside; a protected recording unit 112 for being accessible from a host device which has completed a first authorization process; and the record unit 113 being accessible from a host device which has completed a second authorization processing and protecting the limitation of writing, in order to inhibit the writing from the host that has only completed the first authorization process. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
