Integrated Services Digital Broadcasting is a Japanese broadcasting standard for digital television (DTV) and digital radio.
A broadcast flag is a bit field sent in the data stream of a digital television program that indicates whether or not the data stream can be recorded, or if there are any restrictions on recorded content. Possible restrictions include the inability to save an unencrypted digital program to a hard disk or other non-volatile storage, inability to make secondary copies of recorded content, forceful reduction of quality when recording, and inability to skip over commercials.
High-Definition Multimedia Interface (HDMI) is a proprietary audio/video interface for transmitting uncompressed video data and compressed or uncompressed digital audio data from an HDMI-compliant source device, such as a display controller, to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for analog video standards.
High-bandwidth Digital Content Protection (HDCP) 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. Types of connections include DisplayPort (DP), Digital Visual Interface (DVI), and High-Definition Multimedia Interface (HDMI), as well as less popular or now depreciated protocols like Gigabit Video Interface (GVIF) and Unified Display Interface (UDI).
Project 25 is a suite of standards for interoperable digital two-way radio products. P25 was developed by public safety professionals in North America and has gained acceptance for public safety, security, public service, and commercial applications worldwide. P25 radios are a direct replacement for analog UHF radios, adding the ability to transfer data as well as voice for more natural implementations of encryption and text messaging. P25 radios are commonly implemented by dispatch organizations, such as police, fire, ambulance and emergency rescue service, using vehicle-mounted radios combined with repeaters and handheld walkie-talkie use.
Globally Executable MHP (GEM) is a DVB specification of a Java based middleware for TV broadcast receivers, IPTV terminals and Blu-ray players. GEM is an ETSI standard and an ITU "Recommendation”. GEM defines a set of common functionalities which are independent from the signaling and protocols of a specific transmission network and enables to write interoperable Java applications for TV. GEM is not intended to be directly implemented, but rather forms the basis for broader specifications targeting a particular network infrastructure or class of device. GEM defines profiles for different device classes (targets) – these define the set of available features of GEM for this device class. Currently GEM defines targets for broadcast, packaged media (Blu-Ray) and IPTV. Combinations of these targets can be combined into a hybrid GEM platform, which enables to build devices with multiple network interfaces, such as a combined broadcast/IPTV set-top box.
ISDB-T International, also known in Brazil as Sistema Brasileiro de Televisão Digital, is a technical standard for digital television broadcast used in Brazil, Argentina, Peru, Botswana, Chile, Honduras, Venezuela, Ecuador, Costa Rica, Paraguay, Philippines, Bolivia, Nicaragua, El Salvador and Uruguay, based on the Japanese ISDB-T standard. ISDB-T International launched into commercial operation on 2 December 2007, in São Paulo, Brazil.
The Broadcast Protection Discussion Group (BPDG) is a working group of content providers, television broadcasters, consumer electronics manufacturers, information technology companies, interested individuals and consumer activists. The group was formed specifically for the purpose of evaluating the suitability of the broadcast flag for preventing unauthorized redistribution and to determine whether there was substantial support for the broadcast flag. The group completed its mission with the release of the BPDG Report.
A free-to-air or FTA Receiver is a satellite television receiver designed to receive unencrypted broadcasts. Modern decoders are typically compliant with the MPEG-4/DVB-S2 standard and formerly the MPEG-2/DVB-S standard, while older FTA receivers relied on analog satellite transmissions which have declined rapidly in recent years.
The Brazilian Technical Standards Association, usually rendered in Portuguese as Associação Brasileira de Normas Técnicas (ABNT) is a private non-profit organization and the normative body which is responsible for technical standards in Brazil, and intends to promote technological development in the country. Brazilian national standards published by the association are named Norma Brasileira and abbreviated NBR.
Ginga is the middleware specification for the Nipo-Brazilian Digital Television System. Ginga is also ITU-T Recommendation for IPTV Services. It is also considered in ITU-T recommendations for Cable Broadcast services and for Terrestrial Broadcast services by ITU-R BT.1889, ITU-R BT.1699 and ITU-R BT.1722. Ginga was developed based on a set of standardized technologies but mainly on innovations developed by Brazilian researchers. Its current reference implementation was released under the GPL license.
ABNT NBR 15601 is the technical standard published by ABNT, the Brazilian Association of Technical Standards, that is responsible for addressing the aspects regarding transmission on the Brazilian Digital Terrestrial Television Standards, also known as SBTVD or ISDB-T version B.
The SBTVD Forum is a non-profit organization of private and public companies responsible for the general aspects of Digital TV deployment in Brazil. The organization was founded in 2007 in order to address all technical issues regarding the upcoming SBTVD standard, also known as ISDB-Tb.
The audio and video compression aspects of the Brazilian Digital Terrestrial Television Standards are described in the three documents published by ABNT, the Brazilian Association of Technical Standards, the ABNT NBR 15602-1:2007 - Digital terrestrial television - Video coding, audio coding and multiplexing - Part 1: Video coding; ABNT NBR 15602-2:2007 - Digital terrestrial television - Video coding, audio coding and multiplexing - Part 2: Audio coding; and ABNT NBR 15602-3:2007 - Digital terrestrial television - Video coding, audio coding and multiplexing - Part 3: Multiplexing signals.
The ABNT NBR 15603 is the technical document of the SBTVD standards that describes in detail aspects regarding Multiplexing and service information (SI). The document is divided in 3 separate parts that covers: SI for digital broadcasting systems ; Data structure and definition of SI basic Information ; and Syntax and definition of SI extended information.
The ABNT NBR 15604 is the document that describes in detail the mandatory and optional functions and features of receivers for the SBTVD. It's essential for the correct implementation by manufacturers of either fixed, mobile or portable receivers aimed at the Brazilian Digital TV market.
ABNT NBR 15606 refers to a collection of technical standards that govern the transmission of digital terrestrial television in Brazil.
The standard ABNT NBR 15607-1:2008 - Digital terrestrial television – Interactivity channel establishes the ways in which a receiver device can send information back to the broadcaster through different communication mechanisms. The transmission of common broadcasting content will be done through the air through the main programming feed, while a more customized use of content can be sent through the interactive channel.
The standard ABNT NBR 15608 describes in further detail the parts of the digital television system that need clarifying, setting directives for implementation in a combination of mandatory and optional features. It can be seen as a refinement of the original specification documents focused on system implementation.
Clear-Vision is a Japanese EDTV television system introduced in the 1990s, that improves audio and video quality while remaining compatible with the existing broadcast standard. Developed to improve analog NTSC, it adds features like progressive scan, ghost cancellation and widescreen image format. A similar system named PALPlus was developed in Europe with the goal of improving analog PAL broadcasts.
