4K Ultra HD nyob ntawm no: Nws yog dab tsi thiab nws txhais li cas rau koj lub TV saib
4K yog hais txog ib qho ntawm ob qho kev txhais siab siab: 3840 x 2160 pixels lossis 4096 x 2160 pixels. 4K yog plaub zaug pixel kev daws teeb meem, los yog ob zaug cov kab daws teeb meem (2160p), ntawm 1080p (1920 x 1080 pixels) . Lwm qhov kev txhim kho siab txhais tau siv yog 720p thiab 1080i .
4K qhov kev daws teebmeem yog siv rau kev lag luam digital cinematography uas siv 4096 x 2160 kev xaiv, uas muaj ntau cov yeeb yaj kiab raug tua los yog ua haujlwm hauv 4K los ntawm qhov nce ntawm 2 K (1998 x 1080 rau qhov 1.85: 1 nam piv los yog 2048 x 858 rau 2.35: 1 piv piv) .
Raws li nws daim ntawv teev cov neeg siv khoom siv, Ultra HD thiab UHD, 4K yog tsim nyob rau hauv tsev ua yeeb yam, siv 3840 x 2160 pixel xaiv, ntawm ob qho tib si ntawm ntau cov chav tsev ua yeeb yam uas muaj cov 4K dhau-los thiab / lossis 4K video upscaling muaj peev xwm, nrog rau TVs, video projectors , thiab lwm qhov khoom, xws li cov duab streamers, Ultra HD Blu-ray Players, thiab Blu-Ray Disc players uas ntiav 4K upscaling.
Ntxiv rau Ultra HD lossis UHD, 4K kuj tseem raug xa mus rau hauv kev ua haujlwm xws li 4K x 2K, Ultra High Definition, 4K Ultra High Definition, Quad High Definition, Quad Resolution, Quad Full High Definition, QFHD, UD, 2160p
Yog vim li cas 4K?
Dab tsi ua rau 4K qhov tseem ceeb yog siv cov tshuaj ntsuam loj saib TV puas loj npaum li cas thiab video projectors, muab ntau yam ntxiv thiab tsawg dua pixel pom dluab tshaj 1080p. 1080p zoo li mus txog 65-nti, thiab tseem tuaj yeem saib zoo qhov loj qhov screen loj, tab sis 4K tuaj yeem xa tau cov duab zoo dua qub dua li qhov ntsuas ntau ntxiv.
Yuav ua li cas 4K Implemented
Muaj ntau ntawm 4K Ultra HD TVs muaj , nrog rau cov tsawg 4K thiab 4K-enhanced video projectors .
4K cov ntsiab lus muaj nyob rau ntawm ntau qhov chaw streaming, xws li Netflix, Vudu, thiab Amazon, zoo li ntawm Ultra HD Blu-Ray Disc hom thiab players . Nws tseem ceeb heev uas yuav tsum tau nco ntsoov tias txawm tias muaj ntau tus Blu-txoj sab ci disc players uas muaj kev txhawb zog 1080p Blu-duab tshav disk rau 4K, tsuas yog siv Ultra HD Blu-Ray Disc neeg uas ua ntawv tuaj yeem ua discs uas muaj cov kev xaiv 4K.
Ntawm qhov cable / satellite qhov ntawm qhov kev ua zauv, DirecTV tau xa ob qho ua ntej kaw thiab nyob hauv 4K cov ntsiab lus ntawm satellite rau nws cov neeg rau npe (yog tias lawv muaj ob qho tib si lub thev xaib thiab xa mus rau qhov kev npaj tsim nyog). On cable side, tej yam uas yog nyob rau hauv tej hauj lwm, tab sis tsis muaj dab tsi ntau tseem tsis tau.
Txawm li cas los xij, tshaj qhov-cua-TV broadcasting yog qhov twg muaj tiag lagging. 4K TV broadcasting tseem tab tom teb ua ke nrog South Kauslim coj cov hmoov txhuas, raws li Asmeskas. Txawm li cas los, muaj ib qho teeb meem loj tshaj yog tias hluav taws xob hluav taws xob yuav tsum tsis yog sib txuas nrog HDTV tshaj tawm tam sim no.
Yog xav paub ntxiv txog kev nce qib ntawm 4K TV broadcasting, xa mus rau peb cov tshooj: ATSC 3.0 - Cov kauj ruam tom ntej hauv TV Broadcasting .
Dab tsi 4K tiag tiag txhais tau hais tias rau cov neeg tau txais kev pab
Qhov kev nce ntawm 4K xa cov kev pabcuam zoo tshaj plaws hauv kev siv duab duab rau daim ntaub ntawv siv loj, thiab ua tau kom txo tau qhov kev muaj peev xwm rau cov neeg saib pom pom cov duab pixel ntawm qhov screen tshwj tsis yog tias koj tso koj tus kheej zoo heev. Qhov no txhais tau tias txawm yog qhov tob hauv thiab qhov tob. Thaum ua ke nrog kev ceev refresh refresh rates, 4K muaj peev xwm xa tuaj kom ntau li qhov tob li 3D - tsis muaj qhov yuav tsum tau rau tsom iav.
Qhov kev siv ntawm Ultra HD tsis ua rau 720p lossis 1080p TV tsis ua haujlwm (txawm hais tias, raws li 4K Ultra HD TV muag tos thiab nqi qis, tsawg dua 720p thiab 1080p TVs yog ua), thiab tam sim no HDTV TV broadcast infrastructure tsis raug tso pov tseg txhua lub sijhawm sai sai, txawm tias ATSC 3.0 pib tsim los siv rau cov ntawv sib txuas lus.
Ntawm chav kawm, ib yam li ntawm xyoo 2009 DTV txoj kev hloov, yuav muaj ib hnub thiab lub sijhawm qee qhov 4K yuav yog qhov kev tshaj tawm TV, tab sis qhov ntawd txhais tau hais tias ntau lub tsev yuav tsum muaj nyob.
Kawm ntxiv txog 4K kev siv thoob plaws hauv disc, streaming, thiab cov platform hauv broadcast hauv peb tus khub tsab xov xwm: Koj Yuav Tsum Tau Saib 4K Lub Xeev Ntawm Ib Lub Luam TV Ultra HD
Yog tias koj xav tias koj npaj txhij los ua lub dhia mus rau hauv 4K, mus saib peb cov npe ntawm cov zoo 4K Ultra HD TVs .
Tshaj 4K thiab Ultra HD
Dab tsi nta tshaj 4K? Yuav ua li cas hais txog 8K? 8K yog 16 npaug ntawm qhov daws teeb meem ntawm 1080p . Muaj ntau tus qauv 8K TVs tau tshwm nyob rau ob peb lub xyoo dhau los thiab muaj qee qhov 8K cov kev ntsuas rau kev siv rau kev siv, tab sis them tus nqi pheej yig rau cov neeg siv yog tseem muaj qee txoj kev deb - tej zaum yuav muaj nyob rau hauv 2020 txog 2025 lub sijhawm.
Video Resolution vs Megapixels
Ntawm no yog yuav ua li cas los sib piv 1080p, 4K thiab 8K kev daws teeb meem pixel daws teeb meem ntawm tus nqi txawm tias tseem muaj cov koob yees duab:
- 1080p (1920x1080) yog 2.1 megapixels.
- 4K (3840 x 2160 los yog 4096 x 2160) yog li 8.5 megapixels.
- Tsuas yog nrog 8K (7680 x 4320 pixels - 4320p) koj puas tau nkag mus rau hauv pixel daws teeb meem ntawm cov kev tshaj li qub cov digital koob yees duab - 33.2 megapixels. Koj yuav ntxim nrog cov duab nrog ntau dua li qhov koj pom hauv koj lub TV thaum nws los mus yees duab cov ntsiab lus.
Xim, Qhov Zoo, thiab Ntau Ntxiv
Tau kawg, tag nrho cov saum toj no tau hais, koj yog cov uas xav tau kev txaus siab rau yam koj pom hauv koj lub TV • kev daws teeb meem yog ib qho, tiam sis muaj feem xyuam xws li kev ua video thiab kev ua kom zoo dua, xim sib xws, qhov sib txawv, qhov kev tshuaj ntsuam me me, thiab txawm lub TV hauv lub cev zoo li cas hauv koj chav yuav tsum tau muab suav rau hauv kev xav.
Yog xav paub ntxiv txog qhov sib txawv thiab xim zoo li cas, nrog rau 4 k rooj sib tham, xyuas cov khoom ntawm peb tus khub: HDC10: Dolby Vision, HDR - Nws Txhais Tes Dab Tsi rau TV Saib Xyuas thiab Keeb Ceem Xaiv thiab Koj Lub TV .