4K yog hais txog ib qho ntawm ob qhov kev daws teeb meem siab: 3840 x 2160 pixels lossis 4096 x 2160 pixels. 4K yog plaub npaug ntawm pixel daws teeb meem, lossis ob zaug ntawm kab kev daws teeb meem (2160p), ntawm 1080p (1920 x 1080 pixels).
Lwm qhov kev daws teeb meem siab hauv kev siv yog 720p thiab 1080i. Cov no yog cov kev daws teeb meem feem ntau siv hauv cov TV loj dua los tsim cov duab nthuav dav zoo dua.
- 4K daws teeb meem yog siv hauv kev lag luam digital xinesmas siv 4096 x 2160 kev xaiv, qhov twg ntau cov yeeb yaj kiab raug tua lossis ua tiav hauv 4K los ntawm kev nce qib ntawm 2K (1998 x 1080 rau 1.85: 1 nam piv lossis 2048 x 858 rau 2.35:1 nam ratio).
- Raws li nws ob lub npe neeg siv khoom lag luam, Ultra HD thiab UHD, 4K tau tsim tau zoo hauv cov neeg siv khoom thiab tsev ua yeeb yam toj roob hauv pes, siv 3840 x 2160 pixel kev xaiv (tshwj xeeb yog 3.8K, tab sis hais tias 4K yooj yim dua).
- Ntxiv rau Ultra HD lossis UHD, 4K tseem raug xa mus rau hauv cov chaw tshaj lij xws li 4K x 2K, Ultra High Definition, 4K Ultra High Definition, Quad High Definition, Quad Resolution, Quad Full High Definition, QFHD, UD, los yog 2160p.
Cov ntaub ntawv no siv tau rau TV los ntawm ntau lub tuam txhab suav nrog, tab sis tsis txwv rau, cov tsim los ntawm LG, Samsung, Panasonic, Sony, thiab Vizio.
Vim li cas 4K?
Dab tsi ua rau 4K daws teeb meem tseem ceeb yog tias nrog kev siv lub TV loj dua qhov ntau thiab tsawg nrog rau cov yeeb yaj kiab video, nws muab ntau cov ncauj lus kom ntxaws thiab pom cov duab pixel tsawg dua 1080p. 1080p zoo li zoo txog li 65-nti, thiab tseem tuaj yeem saib zoo nyob rau hauv qhov loj dua qhov screen, tab sis 4K tuaj yeem xa cov duab zoo dua li qhov screen loj ntxiv mus ntxiv.
Qhov kev daws teeb meem tseem nyob tas li tsis hais qhov screen loj npaum li cas. Txawm li cas los xij, thaum lub vijtsam loj dua, qhov hloov pauv yog pes tsawg pixels ib nti. Qhov no txhais tau hais tias pixels yuav tsum tau nce qhov loj me, thiab, los yog sib nrug deb sib nrug kom thiaj li tswj tau tib lub pixels ntawm lub vijtsam.
Yuav Ua Li Cas 4K
Muaj ntau 4K Ultra HD TVs muaj, nrog rau ntau tus lej ntawm 4K thiab 4K-txhim kho video projectors
- Rau kev txhawb nqa ntxiv hauv kev teeb tsa kev ua yeeb yam hauv tsev, feem ntau AV cov neeg txais kev ua yeeb yam hauv tsev muaj 4K dhau mus thiab/lossis 4K video upscaling peev xwm.
- 4K cov ntsiab lus muaj los ntawm ntau qhov chaw streaming, xws li Netflix, Vudu, thiab Amazon, nrog rau ntawm Ultra HD Blu-duab tshav Disc hom thiab cov players.
Txawm hais tias muaj ntau Blu-duab tshav disc players uas nce tus qauv 1080p Blu-duab tshav disc rau 4K, tsuas yog Ultra HD Blu-duab tshav Disc player tuaj yeem ua si discs uas muaj 4K daws teeb meem tiag.
- Ntawm lub satellite ntawm qhov sib npaug, DirecTV thiab tais diav muaj peev xwm xa cov kev xaiv txwv tsis pub kaw ua ntej thiab nyob 4K cov ntsiab lus ntawm satellite rau nws cov neeg siv khoom (muab lawv muaj ob lub thawv satellite sib xws, tshaj TV, thiab subscribe rau txoj kev npaj tsim nyog).
- Rau cov uas nyiam nkag mus rau cov ntsiab lus ntawm cable, koj cov kev xaiv yeej txwv. Txog tam sim no, Comcast muab qhov tsawg kawg nkaus ntawm 4K nyob thiab ua raws li qhov xav tau, ntxiv rau kev nkag mus rau 4K Netflix. Yog tias koj muaj 4K Ultra HD TV, nrog koj tus kws kho mob hauv zos saib seb lawv puas muaj kev pabcuam 4K.
- Tshaj tawm TV tshaj tawm huab cua yog qhov uas 4K kev siv tau lag luam. Txawm hais tias Kaus Lim Qab Teb thiab Nyij Pooj tau ua tus thawj coj nrog kev tshaj tawm 4K TV tsis tu ncua, nws tab tom ua tiav qhov kev sim hauv Teb Chaws Asmeskas kom tshem tawm cov teeb meem xws li kev sib raug zoo nrog cov xov xwm tam sim no thiab ntxiv cov nqi vaj tse uas cov chaw nres tsheb yuav tshwm sim. US 4K TV tshaj tawm xov xwm yog hu ua ATSC 3.0 (NextGen). Xaiv cov chaw nres tsheb hauv 40 lub khw TV loj tshaj plaws hauv Asmeskas tau xav tias yuav pib tshaj tawm tsis tu ncua thaum kawg ntawm 2020.
4K txhais li cas tiag rau cov neeg siv khoom
Qhov muaj ntau ntxiv ntawm 4K muab cov neeg siv khoom tau txais kev txhim kho video zoo heev rau daim ntawv thov kev tshuaj ntsuam loj, thiab tuaj yeem txo lub peev xwm rau cov neeg saib kom pom cov qauv pom pixel ntawm lub vijtsam tshwj tsis yog tias koj tso koj tus kheej ze heev. Qhov no txhais tau tias txawm smoother npoo thiab qhov tob. Thaum ua ke nrog cov tshuaj ntsuam nrawm dua tshiab, 4K muaj peev xwm xa tau yuav luag ntau qhov tob li 3D-tsis xav tau tsom iav.
Kev siv ntawm Ultra HD tsis ua rau 720p lossis 1080p TV tsis siv, txawm hais tias, raws li 4K Ultra HD TV muag khoom tuaj tos thiab nqi nqis, tsawg dua 720p thiab 1080p TVs raug tsim. Tsis tas li, tam sim no HDTV TV tshaj tawm cov txheej txheem yuav tsis raug tso tseg txhua lub sijhawm sai sai, txawm tias ATSC 3.0 pib siv rau cov ntsiab lus xa mus.
Tau kawg, ib yam li kev hloov pauv ntawm 2009 DTV, yuav tuaj txog hnub thiab sijhawm qee qhov uas 4K tuaj yeem dhau los ua tus qauv tshaj tawm hauv TV, tab sis qhov ntawd txhais tau tias ntau qhov kev tsim kho yuav tsum tau ua.
kab hauv qab
Dab tsi dag dhau 4K? Yuav ua li cas txog 8K? 8K yog 16 npaug ntawm qhov kev daws teeb meem ntawm 1080p. Muaj tsawg tus naj npawb ntawm 8K TVs muaj rau kev yuav khoom los ntawm Asmeskas cov neeg siv khoom, nrog Samsung ua tus thawj coj, tab sis tsis muaj cov ntsiab lus 8K tiag tiag muaj los saib hauv Teb Chaws Asmeskas Qhov no txhais tau tias qee lub sijhawm cov neeg saib yuav tau saib cov duab ntawm 8K TVs uas yog. upscaled los ntawm 4K, 1080p, 720p, los yog lwm yam kev daws teeb meem. Txawm li cas los xij, Nyiv tau pib tshaj tawm ib qho channel ntawm 8K cov ntsiab lus.
Video daws teeb meem vs. Megapixels
Ntawm no yog yuav ua li cas los sib piv 1080p, 4K thiab 8K daws teeb meem rau pixel daws teeb meem ntawm txawm tias tus nqi qis dua cov koob yees duab tseem ceeb:
- 1080p (1920x1080) yog 2.1 megapixels.
- 4K (3840 x 2160 lossis 4096 x 2160) yog li 8.5 megapixels.
- Tsuas nrog 8K (7680 x 4320 pixels - 4320p) koj puas tau nkag mus rau hauv pixel daws teeb meem ntawm cov koob yees duab digital tseem zoo tshaj plaws - 33.2 megapixels. Koj feem ntau yuav noj cov duab uas muaj kev daws teeb meem ntau dua li koj tuaj yeem pom ntawm koj lub TV screen thaum nws los txog rau cov ntsiab lus video.
kab hauv qab
Tau kawg, txhua yam uas tau hais saum toj no, koj yog tus uas yuav tsum tau txaus siab rau qhov koj tab tom pom ntawm koj lub TV screen-kev daws teeb meem nce ntxiv yog ib feem, tab sis lwm yam xws li kev ua yeeb yaj kiab / nce qib, xim Kev sib xws, cov lus teb dub, qhov sib piv, qhov loj me, thiab TV lub cev zoo li cas hauv koj chav yuav tsum tau muab coj los xav.
Cov lus nug nquag
- 4K txhais li cas? Technically, 4K yog hais txog qhov tseeb tias lub vijtsam muaj kab rov tav daws teeb meem ntawm kwv yees li 4,000 (4K) pixels. Tus "K" sawv cev rau "kilo," uas txhais tau tias "ib txhiab." Ob qhov kev daws teeb meem siab yog 3840 x 2160 pixels lossis 4096 x 2160 pixels.
- Koj ua li cas ntxuav lub TV 4K? Cov kauj ruam los ntxuav lub tiaj tiaj TV yog tib yam, txawm tias qhov kev daws teeb meem: tig lub TV tawm, thiab tom qab ntawd so nws maj mam nrog ib daim ntaub qhuav, mos. Rau cov stains tawv, dampen daim ntaub nrog sib npaug ntawm cov dej distilled thiab dawb vinegar, los yog nrog ib lub tshuab ntxhua khaub ncaws ua tshwj xeeb rau cov ntxaij vab tshaus.
- 4K upscaling yog dab tsi? 4K upscaling, lossis video upscaling, yog qhov kev ua ntawm kev sib piv cov pixel suav ntawm cov teeb liab video nkag mus rau pixel suav ntawm TV. Lub processor soj ntsuam cov kev daws teeb meem video thiab tsim cov pixels ntxiv kom phim cov pixels ntawm 4K TV screen.
