Invention Grant
- Patent Title: Stream generation method, broadcast receiving apparatus, and display method
- Patent Title (中): 流生成方法，广播接收装置和显示方法
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Application No.: US12300999Application Date: 2007-05-15
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Publication No.: US08532292B2Publication Date: 2013-09-10
- Inventor: Masaru Fukushima , Shuichi Sugie , Shinsaku Kiyomoto , Tatsuo Shibata , Keigo Majima , Takeshi Kimura , Hideki Kokubun , Go Ohtake
- Applicant: Masaru Fukushima , Shuichi Sugie , Shinsaku Kiyomoto , Tatsuo Shibata , Keigo Majima , Takeshi Kimura , Hideki Kokubun , Go Ohtake
- Applicant Address: JP Kyoto JP Tokyo JP Tokyo
- Assignee: Kyocera Corporation,KDDI Corporation,Nippon Hoso Kyokai
- Current Assignee: Kyocera Corporation,KDDI Corporation,Nippon Hoso Kyokai
- Current Assignee Address: JP Kyoto JP Tokyo JP Tokyo
- Agency: DLA Piper LLP (US)
- Priority: JP2006-136982 20060516; JP2006-136984 20060516
- International Application: PCT/JP2007/059943 WO 20070515
- International Announcement: WO2007/132840 WO 20071122
- Main IPC: H04N7/167
- IPC: H04N7/167 ; G06F21/00
Abstract:
Provided is a system far receiving a initialization packet containing an initial vector for initializing stream encryption algorithm and an identifier of a key for decrypting an encrypted stream, initializing a decryption module, and decrypting the encrypted stream, wherein the system stores an identifier of a key which is needed to decrypt a next program in a initialization packet of a current program and informs a user of whether a desired key has been acquired or not at timing close to start time of the next program.
Public/Granted literature
- US20090323948A1 Stream Generation Method, Broadcast Receiving Apparatus, and Display Method Public/Granted day:2009-12-31
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