发明名称 |
Information network system and information apparatus |
摘要 |
Upon receiving an input of a request to move data to an external recording medium, a first information apparatus: transfers to record contents data after performing conversion under compression; encrypts the contents data and stores it in a concealment area of an internal recording medium; transfers to record the contents management information containing key information to the external recording medium; and deletes the encryption key. A second information apparatus: obtains the contents management information from the external recording medium and searches the network; obtains the encrypted contents data from the first information apparatus that holds the contents data concerned; and decrypts the encrypted contents data by using the encryption key contained in the contents management information.
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申请公布号 |
US7814555(B2) |
申请公布日期 |
2010.10.12 |
申请号 |
US20060393667 |
申请日期 |
2006.03.31 |
申请人 |
PANASONIC CORPORATION |
发明人 |
IWAMOTO KIYOTAKA;NAGATA TOMOMI |
分类号 |
G06F7/04;G06F17/30;H04N7/16 |
主分类号 |
G06F7/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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