Method and device for protecting scrambled television broadcast from illegal descrambling
专利汇可以提供Method and device for protecting scrambled television broadcast from illegal descrambling专利检索，专利查询，专利分析的服务。并且PURPOSE: To make it difficult to search the cut point of a video signal line by introducing decoys for reproducing a series of corresponding written contents into a scramble line on the end of a 1st part and the start of a 2nd part. CONSTITUTION: A false random continuation generator determines a cut point B' between points A', C'. After relatively inverting segments A'B', B'C', and amplitude difference between the points A', C' in a section Z' is comparatively small, so that the section Z' can be used as a decoy. Two decoys L1 , L2 having the same shape as the shape of a segment of the section Z' are led into a scrambled video line. Since an amplitude difference between a maximum amplitude sample and a minimum amplitude sample in these decoys is extremely small, regular users are not troubled with the decoys actually.，下面是Method and device for protecting scrambled television broadcast from illegal descrambling专利的具体信息内容。
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