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480i is the shorthand name for a video mode, namely the U.S.
United States

The United States of America is a Federal government constitutional republic comprising U.S. state and a federal district. The country is situated mostly in central North America, where its Contiguous United States and Washington, D.C., the Capital districts and territories, lie between the Pacific Ocean and Atlantic Oceans, Borders of the U...
 NTSC
NTSC

NTSC is the analog television system used in most of the Americas, Japan, South Korea, Taiwan, the Philippines, Burma, and some Pacific island nations and territories ....
 television
Television

Television is a widely used telecommunication mass-media for transmitting and receiving moving , either monochrome or color, usually accompanied by sound....
 system
Television system

A television system is a Canada term for a group of television stations which share common ownership, branding, and programming, but are not legally considered a full television network....
 or digital television
Digital television

Digital television is the sending and receiving of moving images and sound by Discrete signal signals, in contrast to the Analog television used by analog TV....
 systems with the same characteristics. The i, which is sometimes uppercase, stands for interlaced, the 480 for a vertical frame resolution of 480 lines containing picture information; while NTSC has a total of 525 lines, only 480 of these are used to display the image. The digitally transmitted
Digital television

Digital television is the sending and receiving of moving images and sound by Discrete signal signals, in contrast to the Analog television used by analog TV....
 horizontal resolution is usually 720 or 704 pixel
Pixel

In digital imaging, a pixel is the smallest item of information in an image. Pixels are normally arranged in a 2-dimensional grid, and are often represented using dots, squares, or rectangles....
s with an aspect ratio
Aspect ratio (image)

The aspect ratio of an is its width divided by its height.Aspect ratios are mathematically expressed as x :y and x?y . The most common aspect ratios used today in the presentation of films in movie theaters are 1.85:1 and 2.39:1....
 of 4:3 and therefore a display resolution of 640 × 480 (VGA); that is standard-definition television
Standard-definition television

Standard-definition television refers to television systems that have a resolution that meets standards but not considered either Enhanced-definition television or High-definition television....
 (SDTV).






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480i is the shorthand name for a video mode, namely the U.S.
United States

The United States of America is a Federal government constitutional republic comprising U.S. state and a federal district. The country is situated mostly in central North America, where its Contiguous United States and Washington, D.C., the Capital districts and territories, lie between the Pacific Ocean and Atlantic Oceans, Borders of the U...
 NTSC
NTSC

NTSC is the analog television system used in most of the Americas, Japan, South Korea, Taiwan, the Philippines, Burma, and some Pacific island nations and territories ....
 television
Television

Television is a widely used telecommunication mass-media for transmitting and receiving moving , either monochrome or color, usually accompanied by sound....
 system
Television system

A television system is a Canada term for a group of television stations which share common ownership, branding, and programming, but are not legally considered a full television network....
 or digital television
Digital television

Digital television is the sending and receiving of moving images and sound by Discrete signal signals, in contrast to the Analog television used by analog TV....
 systems with the same characteristics. The i, which is sometimes uppercase, stands for interlaced, the 480 for a vertical frame resolution of 480 lines containing picture information; while NTSC has a total of 525 lines, only 480 of these are used to display the image. The digitally transmitted
Digital television

Digital television is the sending and receiving of moving images and sound by Discrete signal signals, in contrast to the Analog television used by analog TV....
 horizontal resolution is usually 720 or 704 pixel
Pixel

In digital imaging, a pixel is the smallest item of information in an image. Pixels are normally arranged in a 2-dimensional grid, and are often represented using dots, squares, or rectangles....
s with an aspect ratio
Aspect ratio (image)

The aspect ratio of an is its width divided by its height.Aspect ratios are mathematically expressed as x :y and x?y . The most common aspect ratios used today in the presentation of films in movie theaters are 1.85:1 and 2.39:1....
 of 4:3 and therefore a display resolution of 640 × 480 (VGA); that is standard-definition television
Standard-definition television

Standard-definition television refers to television systems that have a resolution that meets standards but not considered either Enhanced-definition television or High-definition television....
 (SDTV).

The field rate
Field rate

The field rate of an interlaced video image is twice the effective frame rate, since interlacing draws only half of the image at a time. For example, a field rate of 60 Hertz will correspond to a 30 frames-per-second moving picture....
 (not the frame rate
Frame rate

Frame rate, or frame frequency, is the measurement of the frequency at which an imaging device produces unique consecutive images called Film frames....
) is usually (60/100.1% ˜) 59.94 hertz
Hertz

The hertz is a measure of frequency per unit of time, or the number of list of cycles per second. It is the SI base unit of frequency in the International System of Units , and is used worldwide in both general-purpose and scientific contexts....
 for color TV
Television

Television is a widely used telecommunication mass-media for transmitting and receiving moving , either monochrome or color, usually accompanied by sound....
 and can be rounded up to 60 Hz. There are several conventions for written shorthands for the combination of resolution and rate: 480i60, 480i/60 (EBU
European Broadcasting Union

The European Broadcasting Union is a confederation of 75 broadcasting organisations from 56 countries, and 43 associate broadcasters from a further 25....
) and 480/60i. 480i is usually used in countries that conventionally use NTSC (most of the Americas and Japan
Japan

Japan is an island country in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, People's Republic of China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south....
), because the 525 transmitted lines at 60 hertz of analogue NTSC contain 480 visible ones.

480i can be transported by all major digital television
Digital television

Digital television is the sending and receiving of moving images and sound by Discrete signal signals, in contrast to the Analog television used by analog TV....
 formats, ATSC, DVB and ISDB.

See also


  • 480p
    480p

    480p is the shorthand name for a video display resolution. The p stands for progressive scan, i.e. non-interlaced. The 480 denotes a vertical resolution of 480 vertically scanning lines, usually with a horizontal resolution of 640 pixels and 4:3 Aspect ratio or a horizontal resolution of 854 pixels and 16:9 aspect ratio....
  • Enhanced-definition television
    Enhanced-definition television

    Enhanced-definition television, extended-definition television, or EDTV is a Consumer Electronics Association marketing shorthand term for certain digital television formats and devices, used by the Consumer Electronics Association of the United States....
     (EDTV)