发明名称 Secure audio stream scramble system
摘要 A process for distributing digital audio sequences according to a nominal flux format including a succession of fields, each of which includes at least one digital block clusterizing a selected number of coefficients corresponding to single audio elements that are digitally coded inside the flux and utilized by audio decoders that are able to play it to be able to decode it correctly, including a preparatory step including modifying at least one of the coefficients, and a transmission step including a primary flux in compliance with a nominal format including blocks that were modified during the preparatory step and by a route separated from the primary flux by an additional piece of digital information which allows reconstruction of the original flux starting with a calculation, on recipient equipment, as a function of the primary flux and of the additional information.
申请公布号 US7630492(B2) 申请公布日期 2009.12.08
申请号 US20050092533 申请日期 2005.03.29
申请人 LECOMTE DANIEL;PARAYRE-MITZOVA DANIELA 发明人 LECOMTE DANIEL;PARAYRE-MITZOVA DANIELA
分类号 H04K1/10;G10L19/00;H04K1/00;H04L9/00 主分类号 H04K1/10
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