[STD Number]ARIB STD-B25
[Standard Name]Conditional Access System Specifications for Digital Broadcasting
[Enactment Date]1999/10/26
[Version]　　　　6.7
[Revision Date]2019/1/21

[General Description]

This standard specifies conditional access in digital broadcasting and presents specifications for scrambling and scrambling-related information and for associated receivers.

This standard, conforms to the " Ordinance to revise all of the standard transmission system for digital broadcasting among standard television broadcasting(MIC ordinance No. 26 2003) "; applies to digital standard television broadcasts, high-definition television broadcasts, VHF broadcasts, and data broadcasts by broadcast satellites in the frequency band of 11.7 GHz to 12.2 GHz (“BS digital broadcasts”); digital 34.5 MHz bandwidth standard television broadcasts, high-definition television broadcasts, VHF broadcasts, and data broadcasts by broadcast satellites operating in the frequency band of 12.2 GHz to 12.75 GHz (“wide-area CS digital broadcasts”); digital and high-definition standard television broadcasts by television stations (“terrestrial digital television broadcasts”); digital VHF broadcasts by television stations (“digital terrestrial audio broadcasts”); and VHF broadcasts by broadcasting satellites and television stations using frequencies greater than 2,630 MHz but less than 2,655 MHz (“digital satellite audio broadcasts”); the multi-media terrestrial broadcasting by the segment linking transmission method performed by the broadcasting stations using radio waves of frequency band of 207.5MHz to 222MHz.


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