Method, apparatus, computer program, data storage medium and computer program product for preventing reception of media data from a multicast service by an unauthorized apparatus

Method, apparatus, computer program, data storage medium and computer program product for preventing reception of media data from a multicast service by an unauthorized apparatus

  • CN 101,371,553 A
  • Filed: 01/15/2007
  • Published: 02/18/2009
  • Est. Priority Date: 01/20/2006
  • Status: Active Application
First Claim
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1. one kind is passed through first device (S) transmits method from the media data (MD) of multicast communications service to a plurality of second devices (D), this method is applicable to by security process and prevents undelegated second device (D) receiving media data (MD) that this method has following steps:

  • A) provide first device (S), provide the media data of protecting by security process (MD) by this first device,B) provide the 3rd device (M), between first device (S) and the 3rd device (M), carry out security process by the 3rd device, and install between (M) at least exchanging safety data (SD) so that media data (MD) to be provided at first device (S) and the 3rd according to this security processC) select second device (D), carry out at least receiving course receiving this media data (MD) by this second device,D) select first transfer of data to connect (1), connect by this first transfer of data first device (S) and second device (D) are coupled being used for transmission of media data (MD) at least,E) carry out receiving course, to connect the media data (MD) that (1) receives to be provided by first transfer of data by second device (D).

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