Digital subchannel and Digital television

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Difference between Digital subchannel and Digital television

Digital subchannel vs. Digital television

In broadcasting, digital subchannels are a method of transmitting more than one independent program stream simultaneously from the same digital radio or television station on the same radio frequency channel. Digital television (DTV) is the transmission of television signals, including the sound channel, using digital encoding, in contrast to the earlier television technology, analog television, in which the video and audio are carried by analog signals.

Analog television

Analog television or analogue television is the original television technology that uses analog signals to transmit video and audio.

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Aspect ratio (image)

The aspect ratio of an image describes the proportional relationship between its width and its height.

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ATSC standards

Advanced Television Systems Committee (ATSC) standards are a set of standards for digital television transmission over terrestrial, cable, and satellite networks.

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Bit rate

In telecommunications and computing, bit rate (bitrate or as a variable R) is the number of bits that are conveyed or processed per unit of time.

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Commercial broadcasting

Commercial broadcasting (also called private broadcasting) is the broadcasting of television programs and radio programming by privately owned corporate media, as opposed to state sponsorship.

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Datacasting

Datacasting (data broadcasting) is the broadcasting of data over a wide area via radio waves.

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Digital cable

Digital cable is any type of cable television distribution using digital video compression for distribution.

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Digital terrestrial television

Digital terrestrial television (DTTV or DTT) is a technology for broadcast television in which land-based (terrestrial) television stations broadcast television content by radio waves to televisions in consumers' residences in a digital format.

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Digital Video Broadcasting

Digital Video Broadcasting (DVB) is a set of internationally open standards for digital television.

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DTV radio

Digital-television radio, DTV radio, or DTR describes the audio channels that are provided with a digital television service.

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H.264/MPEG-4 AVC

H.264 or MPEG-4 Part 10, Advanced Video Coding (MPEG-4 AVC) is a block-oriented motion-compensation-based video compression standard.

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High-definition television

High-definition television (HDTV) is a television system providing an image resolution that is of substantially higher resolution than that of standard-definition television, either analog or digital.

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Interlaced video

Interlaced video is a technique for doubling the perceived frame rate of a video display without consuming extra bandwidth.

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IPTV

Internet Protocol television (IPTV) is the delivery of television content over Internet Protocol (IP) networks.

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ISDB

The Integrated Services Digital Broadcasting (ISDB) (Japanese:, Tōgō dejitaru hōsō sābisu) is a Japanese standard for digital television (DTV) and digital radio used by the country's radio and television networks.

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MPEG-2

MPEG-2 (a.k.a. H.222/H.262 as defined by the ITU) is a standard for "the generic coding of moving pictures and associated audio information".

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Multiplex (television)

A multiplex or mux (called virtual sub-channel in the United States and Canada, and bouquet in France) is the popular term used for the grouping of program services that are sub-grouped as interleaved data packets for broadcast over a network or modulated multiplexed medium, which are split out at the receiving end.

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NHK

is Japan's national public broadcasting organization.

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Pixel

In digital imaging, a pixel, pel, dots, or picture element is a physical point in a raster image, or the smallest addressable element in an all points addressable display device; so it is the smallest controllable element of a picture represented on the screen.

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Progressive scan

Progressive scanning (alternatively referred to as noninterlaced scanning) is a way of displaying, storing, or transmitting moving images in which all the lines of each frame are drawn in sequence.

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Radio station

A radio station is a set of equipment necessary to carry on communication via radio waves.

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Standard-definition television

Standard-definition television (SDTV or SD) is a television system which uses a resolution that is not considered to be either high- or enhanced-definition.

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Television channel

A television channel is a broadcast frequency or virtual number over which a television station or television network is distributed.

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1080i

1080i (also known as Full HD or BT.709) is an abbreviation referring to a combination of frame resolution and scan type, used in high-definition television (HDTV) and high-definition video.

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16:9

16:9 (1.7:1) (16:9.

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720p

720p (1280×720 px; also called HD Ready or standard HD) is a progressive HDTV signal format with 720 horizontal lines and an aspect ratio (AR) of 16:9, normally known as widescreen HDTV (1.78:1).

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