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Nine HD
9HD is an Australian television channel owned by Nine Entertainment, originally launched on 17 March 2008 featuring unique "breakaway" programming until 2009 and a high-definition simulcast of the Nine Network from 2009 to 2010 and again since 26 November 2015. The channel is available on high definition digital television viewers in metropolitan and regional areas through a number of owned-and-operated and affiliate stations. Originally 9HD only simulcast blocks of programming from the Nine Network, and in 2008 it added time-shifted news, movies, drama and entertainment programs. Following the launch of 9Go! in August 2009, 9HD reverted to a HD simulcast of the Nine Network. The channel was replaced completely in 2010 and the space occupied by the newly launched multichannel 9Gem. Following the government's decision to remove the SD Primary Channel limitations, the channel returned as a HD simulcast on channel 90 on 26 November 2015. History Origins Digital broadcasting p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1080i
1080i (also known as Full HD or BT.709) is a combination of frame resolution and scan type. 1080i is used in high-definition television (HDTV) and high-definition video. The number "1080" refers to the number of horizontal lines on the screen. The "i" is an abbreviation for "interlaced"; this indicates that only the even lines, then the odd lines of each frame (each image called a video field) are drawn alternately, so that only half the number of actual image frames are used to produce video. A related display resolution is 1080p, which also has 1080 lines of resolution; the "p" refers to progressive scan, which indicates that the lines of resolution for each frame are "drawn" on the screen in sequence. The term assumes a widescreen aspect ratio of 16:9 (a rectangular TV that is wider than it is tall), so the 1080 lines of vertical resolution implies 1920 columns of horizontal resolution, or 1920 pixels × 1080 lines. A 1920 pixels × 1080 lines screen has a total of 2.1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
9Go!
9Go! is an Australian free-to-air digital television multichannel, which was launched by the Nine Network on 9 August 2009, replacing Nine Guide. It is a youthful channel that offers a mix of comedy, reality, general entertainment, movies, animation and drama aimed at people between the ages of 2 to 18. History 2009: Origins and launch The general concept for GO! was revealed on 23 March 2009, with the Nine Network announcing their intention to start a standard-definition variety-based multichannel, launched midway through 2009. The channel's name and branding was first revealed as GO!99 on 14 April 2009 by TV Tonight, a blog dedicated to Australian television. The channel's final name was confirmed by the Nine Network via ''A Current Affair'' as GO! on 15 July 2009, as well as multi-coloured logo variations. The channel went to air at on 5 August 2009, broadcasting a promo loop. GO! officially began broadcasting scheduled programming from 9 August 2009 at with a 1-minute p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Analog Television
Analog television is the original television technology that uses analog signals to transmit video and audio. In an analog television broadcast, the brightness, colors and sound are represented by amplitude, instantaneous phase and frequency, phase and frequency of an analog signal. Analog signals vary over a continuous range of possible values which means that Noise (electronics), electronic noise and interference may be introduced. Thus with analog, a moderately weak signal becomes Noise (video), snowy and subject to interference. In contrast, picture quality from a digital television (DTV) signal remains good until the signal level drops below digital cliff, a threshold where reception is no longer possible or becomes intermittent. Analog television may be wireless (terrestrial television and satellite television) or can be distributed over a cable network as cable television. All broadcast television systems used analog signals before the arrival of DTV. Motivated by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Standard Definition
Standard-definition television (SDTV, SD, often shortened to standard definition) is a television system which uses a resolution that is not considered to be either high or enhanced definition. "Standard" refers to it being the prevailing specification for broadcast (and later, cable) television in the mid- to late-20th century, and compatible with legacy analog broadcast systems. The two common SDTV signal types are 576i, with 576 interlaced lines of resolution, derived from the European-developed PAL and SECAM systems, and 480i based on the American NTSC system. Common SDTV refresh rates are 25, 29.97 and 30 frames per second. Both systems use a 4:3 aspect ratio. Standards that support digital SDTV broadcast include DVB, ATSC, and ISDB. The last two were originally developed for HDTV, but are also used for their ability to deliver multiple SD video and audio streams via multiplexing. In North America, digital SDTV is broadcast in the same 4:3 aspect ratio as NTSC sig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broadcasting Services Act 1992
The ''Broadcasting Services Act 1992'' (Cth) is an Act of the Parliament of Australia, which broadly covers issues relating to content regulation and media ownership in Australia. The law stipulates what is political advertising and the specific conditions which must be met before they are authorised for publication. Background Prior to the Act, the primary legislation in regulating Australia’s broadcasting services was the Broadcasting Act 1942. The ancestral Act was restrictive to the content and ownership of commercial radio and thus was successively amended to accommodate for the introduction of privately owned television networks. The ad hoc approach to legislating broadcasting regulations was reviewed by parliament in 1988 leading to the drafting of the current Act. Meanwhile, Australia’s restrictions on foreign investment were eased during the 1980’s leading to significant investment in Australia’s private sector. Restrictions were, however, still in place fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DVB-T
DVB-T, short for Digital Video Broadcasting – Terrestrial, is the DVB European-based consortium standard for the broadcast transmission of digital terrestrial television that was first published in 1997 and first broadcast in Singapore in February, 1998. This system transmits compressed digital audio, digital video and other data in an MPEG transport stream, using coded orthogonal frequency-division multiplexing (COFDM or OFDM) modulation. It is also the format widely used worldwide (including North America) for Electronic News Gathering for transmission of video and audio from a mobile newsgathering vehicle to a central receive point. It is also used in the US by Amateur television operators. Basics Rather than carrying one data carrier on a single radio frequency (RF) channel, COFDM works by splitting the digital data stream into a large number of slower digital streams, each of which digitally modulates a set of closely spaced adjacent sub-carrier frequencies. In the cas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Owned-and-operated Station
In the broadcasting industry, an owned-and-operated station (frequently abbreviated as an O&O) usually refers to a television or radio station owned by the network with which it is associated. This distinguishes such a station from an affiliate, which is independently owned and carries network programming by contract. The concept of an O&O is clearly defined in the United States and Canada (and to some extent, several other countries such as the United Kingdom, Australia, Brazil, Argentina, Chile and Japan), where network-owned stations had historically been the exception rather than the rule. In such places, broadcasting licenses are generally issued on a local (rather than national) basis, and there is (or was) some sort of regulatory mechanism in place to prevent any company (including a broadcasting network) from owning stations in every market in the country. In other parts of the world, many television networks were given national broadcasting licenses at launch; as such, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Terrestrial Television In Australia
Digital terrestrial television in Australia commenced on 1 January 2001 in Sydney, Melbourne, Brisbane, Adelaide and Perth using DVB-T standards. The phase out of analogue PAL transmissions began on 30 June 2010 and was completed by 10 December 2013. Digital terrestrial television brought a number of enhancements over the previous analogue television, primarily higher-quality picture and sound, as well as datacasting and multi-view services such as video program guides, high definition, and now-and-next program information. There are a number of additional channels, datacasting, as well as high definition services, available to digital terrestrial television viewers in Australia. Digital-only content is subject to availability and differs greatly in various television markets. Although approximately 96% of the population had access to at least one digital service, take up was initially sluggish, with only 28% of Australia's 7.8 million households having adopted free-to-air dig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simulcast
Simulcast (a portmanteau of simultaneous broadcast) is the broadcasting of programmes/programs or events across more than one resolution, bitrate or medium, or more than one service on the same medium, at exactly the same time (that is, simultaneously). For example, Absolute Radio is simulcast on both AM and on satellite radio. Likewise, the BBC's Prom concerts were formerly simulcast on both BBC Radio 3 and BBC Television. Another application is the transmission of the original-language soundtrack of movies or TV series over local or Internet radio, with the television broadcast having been dubbed into a local language. Early radio simulcasts Before launching stereo radio, experiments were conducted by transmitting left and right channels on different radio channels. The earliest record found was a broadcast by the BBC in 1926 of a Halle Orchestra concert from Manchester, using the wavelengths of the regional stations and Daventry. In its earliest days the BBC often transmit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HDTV
High-definition television (HD or HDTV) describes a television system which provides a substantially higher image resolution than the previous generation of technologies. The term has been used since 1936; in more recent times, it refers to the generation following standard-definition television (SDTV), often abbreviated to HDTV or HD-TV. It is the current de facto standard video format used in most broadcasts: terrestrial broadcast television, cable television, satellite television and Blu-ray Discs. Formats HDTV may be transmitted in various formats: * 720p (1280 horizontal pixels × 720 lines): 921,600 pixels * 1080i (1920×1080) interlaced scan: 1,036,800 pixels (~1.04 MP). * 1080p (1920×1080) progressive scan: 2,073,600 pixels (~2.07 MP). ** Some countries also use a non-standard CEA resolution, such as 1440×1080i: 777,600 pixels (~0.78 MP) per field or 1,555,200 pixels (~1.56 MP) per frame When transmitted at two megapixels per frame, HDTV provides about five times a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Television Broadcasting In Australia
Television broadcasting in Australia began officially on 16 September 1956, with the opening of TCN, TCN-9, quickly followed by national and commercial stations in Sydney and Melbourne, all these being in 625-line Black and white television, black and white. The commencement date was designed so as to provide coverage of the 1956 Summer Olympics, Olympic Games in Melbourne. It has now grown to be a nationwide system that includes a broad range of public, commercial, community, subscription, narrowcast, and amateur stations. Television, Colour television in the PAL 625-line format was introduced in 1967 and went to a full-time basis on 1 March 1975 while Pay television, subscription television, on the Galaxy platform, began in January 1995. Digital television in Australia, Digital terrestrial television was introduced on 1 January 2001 in Australia's five largest capital cities. As early as 1929, two Melbourne commercial radio stations, 3UZ and KIIS 101.1, 3DB were conducting exp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtual Channel
In most telecommunications organizations, a virtual channel is a method of remapping the ''program number'' as used in H.222 Program Association Tables and Program Mapping Tables to a channel number that can be entered via digits on a receiver's remote control. Often, "virtual channels" are implemented in digital television, helping users to find a desired channel easily, or easing the transition from analogue to digital broadcasting in general. The practice of assigning virtual channels is most common in those parts of the world where TV stations were colloquially named after the RF channel they were transmitting on ("Channel 6 Springfield"), as it was common in North America during the analogue TV era. In other parts of the world, such as Europe, virtual channels are rarely used or needed, as TV stations there identify themselves by name, not by RF channel or callsign. A "virtual channel" was first used for DigiCipher 2 in North America. It was later used and referred to as a l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
