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1. 发明专利

DK1142340T3 未知
公开(公告)号：DK1142340T3
公开(公告)日：2003-08-18
申请号：DK00925565
申请日：2000-05-16
申请人： NDS LTD
发明人： SHLISSEL MOSHE , DARSHAN EZRA , WACHTFOGEL REUVEN , SHLISSEI MOSHE
IPC分类号： B26F1/26 , B28D1/14 , G11B27/10 , H04N5/783 , H04N5/913 , H04N7/167 , H04N7/24 , H04N9/804 , H05B6/80
摘要： Apparatus for processing a data stream (110) comprises a data stream receiver (150) operative to receive a transport stream (TS), TS storage apparatus (170) operative to store at least a portion of the TS having a beginning and comprising a plurality of TS packets. The apparatus comprises candidate determining apparatus (190) operative to determine, from among the plurality of TS packets, at least one TS packet comprising a candidate access point, candidate offset storage apparatus (170) operative to store in an index store a byte offset of the candidate access point, and arrival time storage apparatus (170) operative to store in the index store a plurality of indications of byte offset, each byte offset being associated with an arrival time of a received TS packet. The TS comprises a partially scrambled TS having a scrambled data portion (130) and an unscrambled data portion (140), and the data stream receiver (150) also comprises analyzing apparatus (160). The analyzing apparatus is operative to distinguish between the scrambled data portion (130) and the unscrambled data portion (140) and to provide the unscrambled data portion (140) for analysis by the candidate determining apparatus (190). The candidate determining apparatus (190) is operative to determine said at least one TS packet comprising a candidate access point based on examination of at least part of the unscrambled data portion (140) provided by the analyzing apparatus (160).

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