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Contact UsOverview of ARIB Standards (STD-B25)
1. Overview
| STD Number | ARIB STD-B25 |
|---|---|
| Standard Name | Conditional Access System Specifications for Digital Broadcasting |
| Enactment Date | 10.26.1999 |
| 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. |
Keywords
| Keyword | Description |
|---|---|
| CAS-R | Abbreviation of Conditional Access System for Reception |
| CAS-P | Abbreviation of Conditional Access System for Playback |
| DIRD | Abbreviation of Digital Integrated Receiver Decoder It is an indoor unit of the following content consists of a digital broadcast receiver, a channel selection unit, a demodulation unit, a decoder, descrambler. |
| ECM | Abbreviation of Entitlement Control Message The program information, key information (scramble key) and descrambling function (enable / disable) information is related information for use in performing descramble. It called common information. |
| EMM | Abbreviation of Entitlement Management Message Key information (work key) for solving the individual contract information and encryption. It is called individual information. |
| ECM-S | Abbreviation of Entitlement Control Message for S-band The program information, key information (scramble key) and ECM including contract information. |
| EMM-S | Abbreviation of Entitlement Management Message for S-band EMM consisting key information for solving the encryption of the ECM-S |
| MULTI2 | Scrambling method stipulated by Ordinance and Notification |
| PPV | Abbreviation of Pay per View Make a purchase agreement at any time on the program unit. Method of accounting in the viewing program unit. |
2. Amendment History
| Ver. | Amendment or Enactment Date | Amendment summary |
|---|---|---|
| 6.7 | 01.21.2019 | Addition of three essential industrial property rights (1 for Ver. 5.1, 2 for Ver. 6.0) to the IPR list. |
| 6.6 | 04.12.2018 | |
| 6.5 | 03.17.2015 | In response to the revision of the Ordinance, review of the Ordinance and Notification that reference and to clarify. In addition, the unification of the kana-kanji. |
| 6.4 | 07.31.2014 | Due to the segment connecting the transmission system of the multi-media broadcast carried out by using a terrestrial backbone broadcasting stations using frequencies below 108MHz exceed the 99MHz (hereinafter, V-Low multimedia broadcasting) received a revision of the Ordinance and Notification of additional, to add the provisions of the multi-media broadcast in Part 4. |
| 6.3 | 12.10.2013 | For enhanced security of the IC card, to expand the byte length of some items of prescribed related information in Part 1. |
| 6.2 | 09.25.2012 | Revision of the Notification to add the provision of access control descriptor associated with SimulCrypt operation of the content protection method. Also, having to deletion from the Ordinance and Notification of satellite digital audio broadcasting, of this standard Ordinance or Notification is revised to fix to be consistent. Clarification of provisions and minor clerical error correction. |
| 6.1 | 07.03.2012 | According to the revision of the Ordinance and Notification due to the revision of the Broadcast Law, this standard is changed to correspond to the new Ordinance and Notification. Also, match the term of the newly defined "Basic broadcasting station". |
| 6.0 | 03.28.2011 | ·Revised to allow the operation of the new content protection system in Part 3 (Revision of the operation of ECM-F0 and F1, and Addition of automatic display messages relevant provisions) ·Addition of "Access control method for Terrestrial Mobile Multimedia Broadcasting Based on Connected Segment Transmission" in Part 4 |
| 5.1 | 03.18.2009 | ·Addition of provisions relating to the miniaturization of IC card in Part 1 |
| 5.0 | 03.14.2007 | ·Addition of the "Control method at the time of reception (content protection system)" to the Part 3 |
| 4.2 | 05.29.2006 | · Addition of provisions relating to the operation of server-based broadcasting CAS (S-CAS) in Part 2 · Unified terminology and clerical error correction in Part 1 |
| 4.1 | 06.05.2003 | ·Addition of the CAS-R System Using ECM-S and EMM-S Associated Information to Chapter 6 of Part 1 |
| 4.0 | 02.06.2003 | ·Correspondence of the Ordinance revision (Revision in accordance with the server-based broadcasting system introduction) ·Change the name of the standard to "Access control system in the digital broadcasting." ·Change the title of the Part 1 to the "Control system at the time of reception (conditional access system)" ·Addition of "At the time of reproduction control method (limited playback method)" to the new as Part 2 |
| 3.1 | 07.25.2002 | ·Correspondence of the ministerial ordinance amendment. ·Addition of an item of reference 5 |
| 3.0 | 05.31.2001 | ·Correspondence of digital terrestrial television broadcasting ·Correspondence of terrestrial compatible digital audio broadcasting |
| 2.0 | 03.27.2001 | ·Correspondence of broadband CS digital broadcasting ·Alternate service correspondence |
| 1.3 | 10.12.2000 | ·Deleting the shaded. Error correction of reference of the Ordinance and Notification. |
| 1.2 | 07.25.2000 | ·Modify the transmission conditions of the EMM, other. |
| 1.1 | 03.29.2000 | ·Revision of the automatic display message |
| 1.0 | 10.26.1999 | Enactment |
