US Patent No: 7,181,628
Number of patents in Portfolio can not be more than 2000
Information terminal device and content backup method
Stats
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Feb 20, 2007
Issued date -
Sep 20, 2004
filing date -
10/946,528
serial no -
In Force
status
Importance
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Abstract
A management information generating section generates management information in which the correspondence between content data and rights data is described when a digital DCF container containing encrypted content data and a rights object described in association with a right which decrypt the content data are stored in an external media card. A backup section writes the DCF container, rights object and management information onto the external media card.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 2003/0079,133 Method and system for digital rights management in content distribution application | 33 | 2001 | |
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| 2002/0169,004 Method of managing data stored in the memory of an SIM card of a mobile equipment | 7 | 2002 | |
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| 2002/0184,515 Rights management unit | 27 | 2002 | |
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| 2004/0243,819 Using a flexible rights template to obtain a signed rights label (SRL) for digital content in a rights management system | 14 | 2004 | |
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| 2002/0161,715 Digital signal processing apparatus, digital signal processing method, information center, and data delivery system | 4 | 2002 | |
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| 2003/0074,569 Data backup method and storage medium for use with content reproduction apparatus | 9 | 2002 | |
Patent Citation Ranking
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