发明授权
US07391866B2 Broadcast apparatus and reception apparatus for providing a storage service by which scrambled content is stored and descrambled using scrambling key list
有权
用于提供存储服务的广播装置和接收装置，通过该存储服务存储加扰内容并使用加密密钥列表进行解扰
- 专利标题： Broadcast apparatus and reception apparatus for providing a storage service by which scrambled content is stored and descrambled using scrambling key list
- 专利标题（中）： 用于提供存储服务的广播装置和接收装置，通过该存储服务存储加扰内容并使用加密密钥列表进行解扰
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申请号： US10023021申请日： 2001-12-13
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公开(公告)号： US07391866B2公开(公告)日： 2008-06-24
- 发明人: Yukiyasu Fukami , Toru Nakahara , Takashi Matsuo , Akio Higashi , Hiroki Murakami
- 申请人： Yukiyasu Fukami , Toru Nakahara , Takashi Matsuo , Akio Higashi , Hiroki Murakami
- 申请人地址： JP Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JP Osaka
- 优先权： JP2000-381870 20001215
- 主分类号： H04N7/167
- IPC分类号： H04N7/167 ; H04K1/00
摘要：
A reception apparatus includes: a reception unit for receiving the scrambled content, the scrambled content being scrambled so that a predetermined unit of scrambled content is descrambled using a descrambling key corresponding to the predetermined unit of scrambled content, and at least one piece of storage information in which a list including all descrambling keys used for descrambling the scrambled content is embedded; storage unit for storing the received scrambled content and the storage information; list extraction unit for extracting the list from the stored storage information; descramble processing unit for extracting the predetermined unit of scrambled content from the stored scrambled content, extracting a descrambling key corresponding to the predetermined unit of scrambled content from the extracted list, and descrambling the extracted predetermined unit of scrambled content using the extracted descrambling key; and reproduction unit for reproducing the predetermined unit of descrambled content in the descrambled order.
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