ABNT NBR 15605
Encyclopedia
The ABNT NBR 15605 is the technical document of the SBTVD
standards that describes in detail aspects regarding content security issues and copy protection, also known as Digital Rights Management
(DRM). It's a detailed reference for manufacturers and content providers that aim to coordinate transmission and reception protection systems in a transparent and effective way for mass viewing.
The standard was written by telecommunications and television experts from many countries with their works coordinated by the SBTVD Forum and cover in detail all the aspects of video and audio coding that applies to SBTVD
. The complete document can be found and downloaded freely in English, Spanish and Portuguese at ABNT's website.
The standard addresses the topic of protection of the transmitted content against its innapropriate and unauthorized use through the use of communication protected protocols and interfaces. The document also ellaborates on the security aspects required for applications transmitted over the air and access to specific portions of a receivers hardware.
Internationally available copy-protection tools are defined for the digital video output, audio output and high-speed interfaces. All digital outputs (e.g.: HDMI
, DVI
, etc) shall be protected by HDCP
and DTCP
. Additionally the resolution of the analogue video output must be limited to 350.000 pixels, equivalent to standard definition, whenever a copy protection signaling is transmitted.
Defined implementation criteria ensure receiver units to be designed and manufactures in such a way that acts of defeating or bypassing the function requirements are effectively prevented.
These documents are also officially available at ABNT website.
The ABNT NBR 15605:2008 – Digital terrestrial television – Security issues – Copy control describes in detail the required security features and limitations that must be applied on the receivers side in order to allow for protection against unauthorized use of information and content.
SBTVD
ISDB-T International or SBTVD, short for Sistema Brasileiro de Televisão Digital is a technical standard for digital television broadcast used in Brazil, Peru, Argentina, Chile, Venezuela, Ecuador, Costa Rica, Paraguay, Philippines, Bolivia, Nicaragua and Uruguay, based on the Japanese ISDB-T...
standards that describes in detail aspects regarding content security issues and copy protection, also known as Digital Rights Management
Digital rights management
Digital rights management is a class of access control technologies that are used by hardware manufacturers, publishers, copyright holders and individuals with the intent to limit the use of digital content and devices after sale. DRM is any technology that inhibits uses of digital content that...
(DRM). It's a detailed reference for manufacturers and content providers that aim to coordinate transmission and reception protection systems in a transparent and effective way for mass viewing.
The standard was written by telecommunications and television experts from many countries with their works coordinated by the SBTVD Forum and cover in detail all the aspects of video and audio coding that applies to SBTVD
SBTVD
ISDB-T International or SBTVD, short for Sistema Brasileiro de Televisão Digital is a technical standard for digital television broadcast used in Brazil, Peru, Argentina, Chile, Venezuela, Ecuador, Costa Rica, Paraguay, Philippines, Bolivia, Nicaragua and Uruguay, based on the Japanese ISDB-T...
. The complete document can be found and downloaded freely in English, Spanish and Portuguese at ABNT's website.
Introduction
The security aspects of the Brazilian Digital Terrestrial Television Standards are described in a document published by ABNT, the Brazilian Association of Technical Standards (Associação Brasileira de Normas Técnicas), the ABNT NBR 15605:2008 – Digital terrestrial television – Security issues – Copy control.The standard addresses the topic of protection of the transmitted content against its innapropriate and unauthorized use through the use of communication protected protocols and interfaces. The document also ellaborates on the security aspects required for applications transmitted over the air and access to specific portions of a receivers hardware.
Document technical overview
In order to protect the contents of digital terrestrial television broadcasting, the standard defines rules regarding interfaces and recording media. This means the content protection information transmitted by broadcasting stations shall be reflected on all the interfaces between receiver units and peripheral equipments.Internationally available copy-protection tools are defined for the digital video output, audio output and high-speed interfaces. All digital outputs (e.g.: HDMI
High-Definition Multimedia Interface
HDMI is a compact audio/video interface for transmitting uncompressed digital data. It is a digital alternative to consumer analog standards, such as radio frequency coaxial cable, composite video, S-Video, SCART, component video, D-Terminal, or VGA...
, DVI
Digital Visual Interface
The Digital Visual Interface is a video interface standard covering the transmission of video between a source device and a display device. The DVI standard has achieved widespread acceptance in the PC industry, both in desktop PCs and monitors...
, etc) shall be protected by HDCP
High-Bandwidth Digital Content Protection
High-bandwidth Digital Content Protection is a form of digital copy protection developed by Intel Corporation to prevent copying of digital audio and video content as it travels across connections...
and DTCP
Digital Transmission Content Protection
Digital Transmission Content Protection, or DTCP, is a digital rights management technology that aims to restrict "digital home" technologies including DVD players and televisions by encrypting interconnections between devices...
. Additionally the resolution of the analogue video output must be limited to 350.000 pixels, equivalent to standard definition, whenever a copy protection signaling is transmitted.
Defined implementation criteria ensure receiver units to be designed and manufactures in such a way that acts of defeating or bypassing the function requirements are effectively prevented.
These documents are also officially available at ABNT website.
Summary
The requirements established for security in the Brazilian digital television standard are in line with the current set of technical protection measures commonly used worldwhide for security of free-to-air high definition content.The ABNT NBR 15605:2008 – Digital terrestrial television – Security issues – Copy control describes in detail the required security features and limitations that must be applied on the receivers side in order to allow for protection against unauthorized use of information and content.
External links
- ABNT website http://www.abnt.org.br/tvdigital
Brazil - SBTVD Forum SBTVD Forum website http://www.forumsbtvd.org.br/ Brazil
- ARIBAribArib is a town in northern Algeria....
Association of Radio Industries and Businesses website http://www.arib.or.jp/english/
Japan - DiBEGDiBEGDiBEG was founded in September 1997 to promote ISDB-T International, the Digital Broadcasting System, in the world....
Digital Broadcasting Experts Group website http://www.dibeg.org/ Japan