Thaum yuav khoom rau TV tshiab lossis kev ua yeeb yam hauv tsev, tej zaum koj yuav raug foob nrog cov lus piav qhia nyuaj thiab cov ntsiab lus uas tuaj yeem ua rau tsis meej pem. Ib lub tswv yim tsis meej pem yog kev daws teeb meem video. Ib lub ntsiab lus tseem ceeb ntawm kev daws teeb meem video kom nkag siab yog 1080p, tab sis nws txhais li cas?
1080p txhais li cas?
Digital displays muaj pixels, uas tau teem rau hauv kab lossis kab. 1080p yog hais txog cov zaub uas muaj 1,920 pixels arrayed horizontally thiab 1,080 pixels arrayed vertically.
Hais lwm txoj hauv kev, 1, 920 pixels ntawm HD zaub tau teeb tsa hauv kab ntsug hla lub vijtsam ntawm sab laug mus rau sab xis. Lub 1, 080 pixels yog teem rau hauv kab lossis kab uas mus los ntawm sab saum toj mus rau hauv qab. 1, 080 (uas yog hu ua kab rov tav daws teeb meem) yog qhov twg 1080 ib feem ntawm lub sij hawm 1080p los ntawm.
Tus lej tag nrho ntawm Pixels hauv 1080p
Nrog 1, 920 pixels tso tawm thoob plaws lub vijtsam thiab 1, 080 pixels khiav los ntawm sab saum toj mus rau hauv qab, koj xaus nrog ntau pixels. Thaum koj muab tus lej pixels hla (1920) thiab nqes (1080), tag nrho yog 2, 073, 600. Raws li pixel ceev, qhov no yog tag nrho cov pixels tso tawm ntawm qhov screen. Hauv cov koob yees duab digital thiab cov ntsiab lus thaij duab, nws yog 2 megapixels.
Txawm li cas los xij, thaum tus naj npawb ntawm pixels tseem zoo ib yam txawm hais tias lub vijtsam loj npaum li cas, tus lej ntawm pixels-ib-nti hloov pauv raws li qhov loj me ntawm lub vijtsam hloov.
Qhov twg 1080p Fits In
1080p yog suav tias yog kev daws teeb meem video zoo rau siv hauv TVs thiab video projectors (tam sim no 4K yog siab dua-sib npaug rau 8.3 megapixels). Tseem, ob qho tib si los ze rau megapixel daws teeb meem ntawm ntau lub koob yees duab pheej yig digital tseem. Qhov no yog vim nws siv ntau bandwidth thiab ua lub zog los tsim cov duab txav dua li cov duab tseem.
Tam sim no, qhov siab tshaj plaws video daws teeb meem tau siv cov cuab yeej tam sim no yog 8K, uas mus txog lub koob yees duab digital tseem daws teeb meem ntawm 33.2 megapixels. Txawm li cas los xij, nws yuav yog ob peb xyoos ua ntej 8K thev naus laus zis dhau los ua qhov tseem ceeb.
Ntawm no "p"
Tam sim no koj nkag siab qhov pixel ntawm 1080p, ua li cas txog p? Nyob rau hauv luv luv, lub p stands rau kev vam meej. Qhov no yog hais txog yuav ua li cas pixel kab (los yog kab) tso saib ntawm lub TV lossis video projection screen.
Thaum ib daim duab tau nthuav tawm zuj zus, cov kab pixel ua rau ntawm qhov screen ua ntu zus (ib qho tom qab ib qho ntawm cov lej lej).
Yuav ua li cas 1080p cuam tshuam rau TVs
1080p yog ib feem ntawm qhov kev txhais siab (HD) video qauv toj roob hauv pes. HDTVs, tshwj xeeb tshaj yog cov uas muaj 40-nti lossis loj dua, muaj tsawg kawg yog 1080p zaub (lossis pixel) daws teeb meem. Txawm li cas los xij, tam sim no tus lej loj hlob yog 4K Ultra HD TVs.
Qhov no txhais tau hais tias yog tias koj tso lub teeb liab rau hauv 1080p TV uas muaj qhov kev daws teeb meem tsawg dua 1080p, lub TV ua cov teeb liab kom nws pom cov duab ntawm nws qhov screen tag nrho. Cov txheej txheem no raug xa mus rau kev nce qib.
Qhov no kuj txhais tau hais tias cov tswv yim teeb liab nrog tsawg dua 1080p daws teeb meem tsis zoo li qhov tseeb 1080p video daws teeb meem vim tias TV yuav tsum tau sau qhov nws xav tias ploj lawm. Nrog rau cov duab txav, qhov no tuaj yeem ua rau cov khoom tsis zoo xws li cov npoo jagged, xim los ntshav, macroblocking, thiab pixelation (qhov no yog rooj plaub thaum ua si cov qub VHS tapes). Qhov tseeb dua kwv yees lub TV ua, cov duab zoo dua yuav zoo.
Lub TV yuav tsum tsis txhob muaj teeb meem nrog 1080p input signals, xws li cov los ntawm Blu-duab tshav Disc thiab los ntawm streaming, cable, los yog satellite cov kev pab cuam uas yuav muab raws li nyob rau hauv 1080p.
TV tshaj tawm xov xwm yog lwm qhov teeb meem. Txawm hais tias 1080p yog suav tias yog Full HD, nws tsis yog ib feem ntawm cov qauv uas cov chaw TV siv thaum tshaj tawm cov yeeb yaj kiab siab-txhais lus tshaj tawm saum huab cua. Cov teeb liab no yog 1080i (CBS, NBC, thiab CW), 720p (ABC), lossis 480i nyob ntawm seb qhov kev daws teeb meem twg qhov chaw nres tsheb lossis nws cov koom haum sib txuas tau txais yuav. Tsis tas li ntawd, 4K TV tshaj tawm txoj hauv kev.
