US Patent 7760988 Content use device and recording medium
Patent 7760988 was granted and assigned to Panasonic on July, 2010 by the United States Patent and Trademark Office.
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To provide a content playback device that can use content appropriately by avoiding output of content not permitted to be used according to contract information. A playback control unit 102 extracts a content name from playback control information in a playback path information table 210, and inquires of a rights management unit 108 whether content identified by the extracted content name is playable or not. If the content is judged as being unplayable, the playback control unit 102 extracts an alternative playback number from the playback control information, and extracts a content name from playback control information whose playback number matches the alternative playback number. The playback control unit 102 then instructs a decryption unit 103 and a playback unit 107 to decrypt and play back encrypted content identified by the extracted content name.
US Patent 07760988 Content use device and recording medium US Patent 7760988 Content use device and recording medium
US Patent 07760988 Content use device and recording medium
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