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A/70 Parts 1 and 2, Conditional Access System for Terrestrial BroadcastApproved: Various Dates

A/70 Part 1 defines the Conditional Access System for ATSC Terrestrial Broadcasting. The necessary building blocks are called out that will enable broadcasters to fully exploit the capabilities of digital broadcasting using ATSC. This standard is based, whenever possible, on existing open standards.

Download A/70 Part 1:2010, “Conditional Access System for Terrestrial Broadcast”, approved 30 November 2010.

A/70 Part 2 defines the method for utilizing Simulcrypt concepts to simultaneously encrypt (provide service protection) services with different service protection systems without transmitting multiple differently-encrypted copies of the services.

Download A/70 Part 2:2011, “Conditional Access System for Terrestrial Broadcast Service Protection using Simulcrypt for IP-Delivered Services”, approved 17 October 2011.

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The Advanced Television Systems Committee, Inc., is an international, non-profit organization developing voluntary standards and recommended practices for digital terrestrial broadcasting. ATSC member organizations represent the broadcast, broadcast equipment, motion picture, consumer electronics, computer, cable, satellite, and semiconductor industries. ATSC also develops digital terrestrial broadcasting implementation strategies and supports educational activities on ATSC standards.

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