1080p vs 1080i
HDTV, tseem hu ua lub siab txhais TV yog qhov hloov pauv zoo ntawm cov qub thiab cov qauv analog TVs. Txawm li cas los xij, thaum nws los rau hauv kev xaiv ib chav tsev, tib neeg tseem muaj teeb meem thiab lawv pom tias nws nyuaj rau xaiv ib qho. Feem ntau ntawm cov lus nug uas tawm los yog tias, qhov sib txawv loj ntawm 1080p thiab kuv HDTV yog dab tsi? Qhov tseeb, muaj ob hom kev tshaj tawm HD. Cov no yog 720p thiab 1080i uas siv cov kev daws teeb meem ntawm 1280 x 720 lossis ib daim duab uas muaj 1280 pixels thoob plaws thiab 720 pixels siab. Lub p hauv 720p tiag tiag sawv rau qhov nce qib scan. Nws tsuas yog txhais tau hais tias daim duab yog tom qab ntawd pleev xim rau saum toj mus rau hauv qab thiab hauv ib qho dhau los, rov kho dua lossis rov ua dua li 60 zaug hauv ib ob.
1080p
Nws yog daim ntawv qhia luv luv rau cov txheej txheem HDTV video uas yog tus cwj pwm los ntawm 1, 080 kab ntawm txoj kev daws teeb meem ntsug, nrog rau kev nce qib scan uas tsuas yog txhais tau tias cov duab tsis sib cuam tshuam ib yam li 1080i qauv zaub. Lub sijhawm tiag tiag xav tias qhov dav dav qhov sib piv ntawm 16: 9 thiab hais txog kab rov tav kev daws teeb meem ntawm 1920 pixels. Qhov kev daws teeb meem no zoo ib yam li 2K digital xinesmas technology. Tus ncej tus nqi tuaj yeem cuam tshuam los ntawm cov ntsiab lus lossis cov lus teev tseg tom qab tsab ntawv p zoo li 1080p30. Nws tsuas yog txhais tau hais tias muaj 30 qhov nce ntxiv rau txhua ob. Kuj tseem tsis muaj kev tshaj tawm hauv 1080p thiab tsis xav tau txhua lub sijhawm sai sai. Txawm li cas los xij, kuj tseem muaj cov qauv digital uas tuaj yeem tsim cov teeb liab 1080p qub. HD thiab Blu-duab tshav DVD players yog qee qhov piv txwv zoo tshaj.
1080i
Tus "i" txhais tau tias sib cuam tshuam thiab nws muaj qhov sib txawv loj rau hauv 1080p, nyob rau hauv uas tus p sawv cev rau kev nce qib scan. Lub sij hawm 1080i tiag tiag xav tias qhov dav dav ntawm qhov sib piv ntawm 16: 9 thiab hais txog qhov loj me yog tias txog 1920 los ntawm 1080 pixels.
Tus nqi teb ntawm "i" feem ntau yog li 60 Hz rau cov teb chaws uas siv lossis tau siv System M raws li kev tshaj tawm xov xwm analog xws li Canada, Tebchaws Meskas, Brazil thiab Nyij Pooj. Txwv tsis pub, nws tuaj yeem yog 50 Hz rau cov cheeb tsam uas siv lub tshuab TV tiag tiag nrog 25 ntas ib tus nqi. Ob qho tib si ntawm qhov sib txawv tuaj yeem nqa los ntawm cov xov tooj cua digital xov tooj cua loj xws li DVB thiab ATSC.
Qhov txawv ntawm 1080p thiab 1080i
Qhov sib txawv ntawm 1080p thiab 1080i yog qee yam ntawm cov yam ntxwv uas nws tuaj yeem muab tau. Cov yam uas lawv muaj peev xwm muab tau txawv ntawm ib leeg. 1080p tuaj yeem qhia koj hom meej rau cov yeeb yaj kiab tsis zoo li qhov 1080i tuaj yeem muab tau. Nws tsuas yog 1080p tuaj yeem tso saib Blu-duab tshav thiab HD DVD hauv nws hom kev daws teeb meem thiab tag nrho. Kuj tseem muaj cov qauv sib txawv nrog ntau hom kev txhawb nqa. Ntawm qhov tod tes, 1080i yog hom video lossis tshaj tawm.
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Recap: 1080p thiab kuv yog cov cim ntawm ob hom kev yees duab sib txawv siv hauv TV qhia. Cov cim "p" thiab "i" qhia txog cov txheej txheem scanning siv thiab "1080" yog hais txog kev daws teeb meem. "p" sawv cev rau kev tshuaj ntsuam xyuas thiab "i" rau kev sib txuas sib txuas. 1080p txhais tau tias cov zaub muaj 1080 kab ntawm kev daws teeb meem ntsug thiab kev siv tshuaj ntsuam xyuas yog kev soj ntsuam. Tag nrho cov kev daws teeb meem ntawm cov zaub yog 1920 × 1080 pixels. 1080i txhais tau hais tias scanning yog interlaced thiab nam piv yog 16: 9, yog li tag nrho cov kev daws teeb meem yog 1920 x 1080; 1920 pixels kab rov tav thiab 1080 pixels ntsug. Thaum nws tau cim tias 1080p30 qhia txog 1920 × 1080 daws teeb meem nrog kev nce qib scanning thiab tus ncej tus nqi yog 30. Kev sib cuam tshuam scanning yog ib qho cuab yeej qub thaum kev soj ntsuam kev vam meej yog qhov feem ntau siv tam sim no |
Zaj lus
Xaiv lub TV zoo tshaj plaws tsis yog qhov nyuaj, tab sis nws kuj tsis yog ib qho yooj yim. Koj tsuas yog yuav tsum xav txog qee yam xws li paub qhov txawv ntawm 1080p thiab kuv. Paub qhov no tuaj yeem pab koj paub txog dab tsi yog chav tsev zoo tshaj plaws los coj.
Txawm li cas los xij, koj xav tau 1080p yog tias koj xav tau cov duab zoo los ntawm koj li Blu-duab tshav thiab HD DVD lossis siv nrog koj cov consoles gaming. Qhov no tej zaum yuav yog ib tug xav tau rau video editing thiab. Rau ib txwm siv 1080i yog qhov zoo heev, thaum piv nrog tus nqi.
