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专利名称：Broadcasting method and broadcast
receiver
发明人：Takashi Hasegawa申请号：US12216087申请日：20080630公开号：US08045710B2公开日：20111025
专利附图：
摘要：A broadcasting method and a broadcast receiver whereby contents are firstdistributed only for storage so that the stored contents are later played back in a timeperiod predetermined by the distributing party, the contents being encrypted for
protection against unauthorized reproduction in any time period other than the intendedone. A content is transmitted together with a begin store command in a first time periodfor storage onto a storage medium at the receiving side. In a time period subsequent tothe first time period, a play command is broadcast so as to get the content retrievedfrom storage for playback. The content should preferably be encrypted. The encryptedcontent is decrypted and played back using a decryption key transmitted along with theplay command in the second time period. The decryption key is deleted the moment thedecryption process is terminated.
申请人：Takashi Hasegawa
地址：Hachioji JP
国籍：JP
代理机构：Mattingly & Malur, PC
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