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Data multiplexing device, program distribution system, program transmission system, pay broadcast system, program transmission method, conditional access system, and data reception device

  • US 20070143784A1
  • Filed: 09/15/2006
  • Published: 06/21/2007
  • Est. Priority Date: 06/11/1997
  • Status: Active Grant
First Claim
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1. A data multiplexing device which multiplexes and transmits transport stream packets of program data consisting of a plurality of data elements constructed in the form of transport stream packets, said device comprising:

  • a scramble key generation means for generating a scramble key corresponding to each of said data elements, and a scramble means for scrambling said corresponding transport stream packet of data element by using a scramble key generated by said scramble key generation means.

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