HDTV (High Definition TV) 1080i VS 1080p HDTV (High Definition TV) 1080i VS 1080p
Nowadays, we are moving into the HD world that provide us better resolution on the screen. Sa panahong ito, kami ay gumagalaw sa mundo HD na bigyan kami ng mas mahusay na resolution sa screen. When shopping for a HD television, you will often notice there are 2 major video formats supported, ie 1080i and 1080p. Kapag nag-shopping para sa isang telebisyon HD, ikaw ay madalas na paunawa ng may 2 malaking video format suportado, ibig sabihin, 1080i at 1080p. But do you know exactly what is the differences between HD 1080i and HD 1080p? Pero alam mo kung ano ang mga pagkakaiba sa pagitan ng HD 1080i at 1080p HD?
For HD 1080i (1920×1080), the 1080 refers to the number of interlaced pixel scan lines appearing on a screen – 1,080. Para sa HD 1080i (1920 × 1080), ang 1,080 ay tumutukoy sa bilang ng mga interlaced pixel i-scan ang mga linya na lumilitaw sa isang screen - 1,080. The screen has 1,080 vertical pixels by 1,920 horizontal pixels. Screen ay 1,080 vertical pixels sa pamamagitan ng 1,920 pahalang pixels. i stands for interlace scanning format which scanning “paints” the picture on the screen by first filling in all the odd-numbered scan lines then filling in all the even-numbered scan lines so that you only get half of the lines of the picture in the first scan and the second half of lines in the second scan. ako ay kumakatawan sa pag-scan sa ilala format na sa pag-scan "paints" ang larawan sa screen sa pamamagitan ng pagpuno ng unang sa lahat ng mga kakaiba-bilang-scan ang mga linya pagkatapos pagpuno sa lahat ng kahit na-bilang-scan ang mga linya upang ikaw lamang ang makakuha ng kalahati ng mga linya ng mga larawan sa ang unang i-scan at ang ikalawang kalahati ng mga linya sa ikalawang scan. This all happens so quickly that human eye is tricked into seeing a complete picture. Ang lahat ng mga mangyayari kaya mabilis na ang mata ng tao tricked sa nakakakita ng isang kumpletong larawan.
On another hand, HD 1080p (1920×1080) means that the resolution of the picture is 1,920 vertical pixels by 1,080 horizontal pixels and p stands again for progressive scanning or non-interlaced. Sa ibang dako, HD 1080p (1920 × 1080) ay nangangahulugan na ang resolution ng mga larawan ay 1,920 vertical pixels sa pamamagitan ng 1,080 pixels ang pahalang at p ay kumakatawan muli para sa progresibong pag-scan o non-interlaced. This scanning format works on the same principle as HD 720p that scans all the lines at once, thus giving a clearer and flicker-free picture. Ang pag-scan sa format na gumagana sa parehong prinsipyo tulad ng 720p HD na sinusubaybayan ng lahat ng mga linya ng sabay-sabay, kaya nagbibigay ng isang mas malinaw at kisap-free larawan. The only difference is that in this type there are more pixels and the resolution is better. Ang tanging pagkakaiba ay na sa ganitong uri doon ay mas pixels at ang resolution ay mas mahusay. As it's considered as HDTV video mode, 1080p is sometimes referred to in marketing materials as “True High-Definition” or “Full High-Definition”. Dahil ito ay itinuturing bilang HDTV video mode, 1080p ay paminsan-minsan-refer sa sa mga materyales sa marketing bilang "tunay na High-Definition" o "Full High-Definition".
Technically speaking, progressive scan 1080p is superior to interlaced scan 1080i, but HD-DVD and Blu-ray discs are currently the only sources of HD 1080p content. Technically pagsasalita, i-scan ang progresibong 1080p ay higit na mataas sa interlaced i-scan ang 1080i, ngunit ang HD-DVD at Blu-ray discs kasalukuyan ay ang tanging pinagmumulan ng HD 1080p nilalaman. Nowadays, some video contents in 1080p format also available in Sa panahong ito, ang ilang nilalaman ng video sa 1080p format makukuha rin sa Apple Quicktime Movie Trailer Apple Quicktime Movie Trailer and at WMV HD Content Showcase WMV HD Ipakita ang Nilalaman . .
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March 21st, 2009 09:48 Marso 21, 2009 09:48
twice frame rate–>isnt tat cuz interlaced scanning scans the screen twice? dalawang beses sa frame rate-> isn't katok cuz interlaced Sinusuri sa pag-scan sa screen ng dalawang beses? first odd lines and then even lines..rite? unang linya ng kakaiba at pagkatapos kahit na linya .. rito? so in effect, both are same ryt? kaya tuloy, ang pareho ay parehong ryt? (tat is, in case of smoothness) (katok ay, sa kaso ng kinis)
March 28th, 2007 11:48 Marso 28, 2007 11:48
Also remember to consider frame rates as well. Tandaan din na isaalang-alang ang mga rate ng frame na rin.
1080i is typically 50/60i fps 1080i ay kadalasang 50/60i fps
1080p is usually 24/25/30p fps 1080p ay karaniwang 24/25/30p fps
As there a twice as many frames per second in 1080i, the motion is smoother. Bilang bang dalawang beses ng maraming frames per second sa 1080i, kilos ay smoother. However, 1080p will look better in low-motion scenes. Gayunman, 1080p ang magiging hitsura ng mas mahusay sa mababang-tagpo mosyon.
A decent decoder should deinterlace/interpolate a 1080i scene correctly to give you an end result that is very nearly on par with 1080p. Isang disente decoder dapat deinterlace / interpolate ng isang 1080i tanawin tama na magbigay sa iyo ng isang resulta na iyon ay lubhang malapit sa par sa 1080p.