What Does 720 Mean

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Getting charged with a crime in Illinois is a serious matter. There are numerous crimes you can face charges for, and it can be confusing to understand not only the crime itself but also your rights. If you are charged with a crime in Illinois, it falls under 720 ILCS. The 720 part is for Chapter 720, which covers all criminal offenses in the state.

This chart shows the most common display resolutions, 720p being one of the 16:9 formats shown in blue.

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). All major HDTV broadcasting standards (such as SMPTE 292M) include a 720p format, which has a resolution of 1280×720; however, there are other formats, including HDV Playback and AVCHD for camcorders, that use 720p images with the standard HDTV resolution. The frame rate is standards-dependent, and for conventional broadcasting appears in 50 progressive frames per second in former PAL/SECAM countries (Europe, Australia, others), and 59.94 frames per second in former NTSC countries (North America, Japan, Brazil, others).

The number 720 stands for the 720 horizontal scan lines of image display resolution (also known as 720 pixels of vertical resolution).[1] The p stands for progressive scan, i.e. non-interlaced. When broadcast at 60.00 frames/s[note 1] frames per second, 720p features the highest temporal resolution possible under the ATSC and DVB standards. The term assumes a widescreenaspect ratio of 16:9, thus implying a resolution of 1280×720 px (0.9 megapixels).

720i (720 lines interlaced) is an erroneous term found in numerous sources and publications. Typically, it is a typographical error in which the author is referring to the 720p HDTV format. However, in some cases it is incorrectly presented as an actual alternative format to 720p.[3] No proposed or existing broadcast standard permits 720 interlaced lines in a video frame at any frame rate.[4]

Comparison with 1080i[edit]

Progressive scanning reduces the need to prevent flicker by anti-aliasing single high contrast horizontal lines.[5][6] It is also easier to perform high-quality 50↔60 Hz conversion and slow-motion clips with progressive video.

A 720p60 (720p at 59.94 Hz) video has advantage over 480i and 1080i60 (29.97/30 frame/s, 59.94/60 Hz) in that it comparably reduces the number of 3:2 artifacts introduced during transfer from 24 frame/s film. However, 576i and 1080i50 (25 frame/s, 50 Hz), which are common in Europe, generally do not suffer from pull down artifacts as film frames are simply played at 25 frames and the audio pitch corrected by 25/24. As a result, 720p60 is used for U.S. broadcasts while European HD broadcasts often use 1080i50 24* frame, with a horizontal resolution of 1920 or 1440 depending on bandwidth constraints. However, some European broadcasters do use the 720p50 format, such as German broadcasters ARD and ZDF, the Norwegian Broadcasting Corporation (NRK) and Spanish Radio and Television Corporation (TVE HD). Arte, a dual-language French-German channel produced in collaboration by ARD, ZDF and France Télévisions, broadcasts in German at 720p50 but in French at 1080i50. The Flemish Broadcasting Company (VRT) in Belgium was using 720p50, but switched to 1080i50 a few years ago.[when?]

Resolutions[edit]

StandardResolutionAspect ratio
Small TVs960×7204:3
Standard1280x72016:9

Notes[edit]

  1. ^It is however more commonly broadcast at (60/1.001), or precisely 59.940059 frames/sec, matching the NTSC SDTV field rate; this and the 50.00 Hz of PAL are still the second and third highest standard framerates.[2]

See also[edit]

  • 10K, 4320p, 2160p, 1080p, 1080i, 576p, 576i, 480p, 480i, 360p, 240p
  • High-definition television (HDTV)
  • Low-definition television (LDTV)

References[edit]

  1. ^'720p - AfterDawn: Glossary of technology terms & acronyms'.
  2. ^Hoffner, Randy (2008-01-09). 'Will the End of NTSC Be the End of 59.94?'. TVTechnology. Retrieved 2010-10-08.
  3. ^Briere, Daniel; Patrick Hurley (2006). HDTV for Dummies. For Dummies. p. 13.
  4. ^'ATSC Standard: Video System Characteristics of AVC in the ATSC Digital Television System'(PDF). 2008-07-29. Archived from the original(PDF) on 2012-10-04. Retrieved 2011-07-24.
  5. ^'720p'. AfterDawn. 2010-08-10. Retrieved 2010-10-08.
  6. ^'720p'. CNET Glossary. Archived from the original on 2010-09-30. Retrieved 2010-10-08.

External links[edit]

Retrieved from 'https://en.wikipedia.org/w/index.php?title=720p&oldid=949336546'

Sitting in your grandparents' basement, staring at M.A.S.H reruns on their old tube TV, you were watching standard definition — 480 lines stacked on top of one another to make up the picture. That's about the same as a DOS-era computer monitor or a 0.3 megapixel camera phone. And though their set refreshed its picture 30 times a second, it lacked the horsepower to process the full image on each scan. So it just drew every other line, updating the remaining ones on the next refresh. The images flitted on and off the screen so fast that your brain stitched the two sets of lines together.

Format wd elements for mac mojave. Format WD Elements for the Mac OS you Have Whether you have Mac OS Sierra, High Sierra or Mojave the way you format your WD Elements drive for Mac is the same. For earlier versions of the Mac operating system, screens may be slightly different.

It's called interlacing, and that set's display properties would be classified as 480i: 480 lines, interlaced.This article has been reproduced in a new format and may be missing content or contain faulty links. Contact to report an issue.High definition boosts resolution to 720 lines or more and can update every line in each refresh pass: progressive scan.

The latest TVs can display 1080p — progressive video at 1,080 lines of resolution. But can you really tell the difference? Just as with a photograph, the answer lies in how big you want the picture to be and how close to it you sit.A 20/20 human eye can't recognize details smaller than 1/60 of a degree of arc.

Don't worry, you don't have to understand that. With a little math, though, we can use this number to find the distance beyond which the eye has trouble distinguishing one pixel from another. It turns out to be 137 percent of the diagonal measurement of any 16:9 widescreen: around 38 inches from a 32-inch TV. So if you're sitting 5 feet away, you'll never notice the difference between 720 and 1,080 lines of resolution. But if you trade up to a 60-inch screen, that distance jumps to almost six feet. Better push the couch back.Even if you spring for a 1080p set, you'll need 1080p sources to take full advantage of it. Right now, those are limited to Blu-ray and HD DVD players and a couple of game consoles.

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720

DVD players without add-ons output only 480p, and though satellite and cable services offer HD channels, these top out at either 720p or 1080i.The larger number might suggest a better picture, but 1080i comes with baggage, too. LCD and plasma sets always display progressive video. When faced with an interlaced signal, they either combine every two half-resolution frames to make a single complete one or show each half-resolution frame and fudge the missing lines. So there's a sacrifice: You lose either half the resolution or half the frame rate.When the action speeds up, it gets even trickier: TVs use complex algorithms to account for fast-moving objects that change positions between frames, guessing which part of the image changed. A wrong guess leads to visual artifacts and ghosting. That's why many sports channels like ESPN HD opt for 720p over 1080i.Of course, a late-night rerun will still look just as bad — until the network remasters the show and releases it on Blu-ray.