发明授权
US07801305B2 Secure device for the broadcasting, recording and viewing on demand of audiovisual works in a format of the MPEG-2 TS type
有权
以MPEG-2 TS型格式播放，记录和视听视频作品的视觉保护装置
- 专利标题： Secure device for the broadcasting, recording and viewing on demand of audiovisual works in a format of the MPEG-2 TS type
- 专利标题（中）： 以MPEG-2 TS型格式播放，记录和视听视频作品的视觉保护装置
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申请号： US10544515申请日： 2004-02-05
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公开(公告)号： US07801305B2公开(公告)日： 2010-09-21
- 发明人: Daniel Lecomte , Sebastien Georges
- 申请人： Daniel Lecomte , Sebastien Georges
- 申请人地址： FR
- 专利权人： Nagra France
- 当前专利权人： Nagra France
- 当前专利权人地址： FR
- 代理机构： DLA Piper LLP (US)
- 优先权： FR0301494 20030207
- 国际申请： PCT/FR2004/050046 WO 20040205
- 国际公布： WO2004/073292 WO 20040826
- 主分类号： H04N7/167
- IPC分类号： H04N7/167 ; H04L9/00 ; H04K1/00
摘要：
A process for distributing audiovisual sequences in accordance with a nominal stream format respecting a MPEG-2 TS norm including a succession of TS packets, including analyzing the stream made prior to transmitting to client equipment to generate a first stream in conformity with the MPEG-2 TS format, modifying all or part of the TS packets by substituting packets of the same structure, but whose content was modified, and generating a second stream of a format including digital information suitable for permitting reconstruction of the nominal stream, separately transmitting the two streams from a servers to the equipment, and a calculation is made on the equipment of a synthesis of a stream in nominal format as a function of the first stream and the second stream.
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