01 ntawm 05
Qhov tseeb txog 4K Video Projectors
Txij li thaum lawv cov kev taw qhia rau xyoo 2012, kev vam meej ntawm 4K Ultra HD TVs yog undeniable. Contrasting los ntawm kev lag luam uas yog 3DTV, tau txais kev pabcuam tau dhia rau lub 4K bandwagon ua tsaug rau nws txoj kev sibhaum zog , HDR , thiab muaj ntau yam xim gamut. Tag nrho cov uas tau muaj lub siab saib TV pom zoo.
Thaum Ultra HD TVs yog ya tawm khib nyiab, feem ntau ntawm cov tsev yeeb yaj kiab hauv tsev yeeb yaj kiab video muaj cov tseem 1080p es tsis yog 4K. Dab tsi yog qhov tseem ceeb? Nco ntsoov, siv 4K rau hauv ib lub video projector yog ntau kim tshaj li nws yog nrog ib tug TV, tab sis hais tias tsis yog tag nrho zaj dab neeg.
02 ntawm 05
Nws Yog Tag Nrho Cov Pixels
Ua ntej plunging mus rau hauv yuav ua li cas 4K yog DVR nyob rau hauv TVs vs video projectors, peb yuav tsum muaj ib tug reference taw tes rau kev ua hauj lwm los ntawm. Tias kis yog pixel.
Lub pixel txhais tias yog cov duab duab. Txhua lub pixel muaj cov ntaub ntawv xim liab, ntsuab, thiab xiav (raug xa mus raws li sub-pixels). Yuav kom tsim tau ib daim duab tag nrho ntawm TV lossis video projection screen ntau tus pixels yuav tsum tau ua. Tus naj npawb los yog pixels uas tuaj yeem pom tau tias qhov kev daws teebmeem.
Yuav ua li cas 4K yog siv rau hauv TVs
Nyob rau hauv TVs, nws muaj qhov loj qhov screen loj uas "ntim rau hauv" cov pixels uas yuav tsum tau los nthuav tawm ib qho kev daws teeb meem.
Tsis hais txog qhov kev ntsuam xyuas me me rau 1080p TVs, muaj ib txwm muaj 1,920 pixels khiav ntawm lub vijtsam horizontally (ib kab) thiab 1,080 pixels khiav nce thiab nce qhov screen vertically (ib sab). Los txiav txim siab tag nrho cov pixels yuav tsum vov lub npo tag nrho, koj muab cov zauv ntawm kab rov tav pixels nrog tus naj npawb ntawm feem ntsug pixels. Rau 1080p TVs tag nrho txog 2.1 lab pixels. Rau 4K Ultra HD TVs, muaj 3,480 kab rov tav pixels thiab 2,160 ntsug pixels, uas ua rau tag nrho cov 8.3 lab pixels sau qhov screen.
Qhov no txhais tau hais tias ntau ntau pixels, tab sis nrog cov vijtsam hauv npo 40, 55, 65, lossis 75 nti, cov tuam txhab muaj ntau qhov chaw (kuj hais) ua haujlwm nrog.
Txawm li cas los xij, rau DLP thiab LCD video projectors, txawm tias cov duab raug tso rau ntawm ib qho loj screen - lawv yuav tsum dhau los ntawm los yog xav txog cov chips hauv lub projector uas muaj ntau dua li cov LCD los yog OLED TV vaj huam sib luag.
Ua lwm yam lus, tus naj npawb ntawm cov pixels yuav tsum muaj me me thiaj li yuav raug xa mus rau hauv ib lub ntiv tes nrog lub voos plaub uas yog tsuas yog li ntawm 1-nti square. Qhov no twv yuav raug hu ntau npaum li cas ntau thiab ntau qhov kev tswj kom zoo heev ua rau tus nqi rau lub khw thiab tus neeg tau txais kev pab.
Yog li ntawd, qhov kev siv ntawm 4K cov lus nyob rau hauv video projectors tsis yog ncaj li nws yog hauv TV.
03 ntawm 05
Lub Pooj Txiag: Kev Txiav Nyiaj
Txij li thaum txhua tus pixels yuav tsum tau siv rau 4K ntawm tus me me nti (s) kim, JVC, Epson, thiab Texas Instruments tau tuaj nrog lwm txoj hauv kev uas lawv thov cov yields tib yam pom tau ntawm qis tus nqi. Lawv txoj kev hu ua Pixel Shifting. JVC hais txog lawv txoj haujlwm raws li eShift, Epson hais txog lawv li 4 K Kev Ua Haujlwm (4Ke), thiab Texas Instruments yog hais txog lawv tus kheej raws li TI UHD.
Epson thiab JVC Txaus rau LCD Projectors
Txawm hais tias muaj qhov txawv me ntsis ntawm Epson thiab JVC systems, ntawm no yog qhov tseem ceeb ntawm seb lawv ob txoj haujlwm ua haujlwm li cas.
Es tsis txhob pib nrog ib tug kim chip uas muaj tag nrho cov 8.3 lab pixels, Epson thiab JVC pib nrog txheem 1080p (2.1 lab pixels) chips. Ua lwm yam lus, hauv lawv cov tub ntxhais, Epson thiab JVC tus tseem yog 1080p video projectors.
Nrog lub eShift los yog 4Ke system qhib, thaum lub xov tooj 4K video input signals (xws li ntawm Ultra HD Blu-duab tshav thiab xaiv cov kev pab cuam streaming ), nws yog faib ua 2 1080p dluab (txhua nrog ib nrab ntawm cov ntaub ntawv 4K duab). Lub projector ces sai hloov txhua pixel diagonally rov-thiab-tawm los ntawm ib nrab-ib-pixel dav thiab tej yaam num qhov tshwm sim mus rau qhov kev tshuaj ntsuam. Kev hloov ntawm kev ua haujlwm ceev ceev, nws fools tus neeg pom rau hauv qhov perceiving tshwm sim li approximating lub 4K duab daws teeb meem.
Txawm li cas los, txij thaum lub pixel ua haujlwm tsuas yog ib nrab ntawm pixel, tab sis qhov pom tshwm sim no yuav zoo li 4K tshaj 1080p, technically, tsis muaj ntau pixels tso tawm kom pom ntawm qhov kev tshuaj ntsuam. Qhov tseeb, lub pixel hloov kev ua raws li Epson thiab JVC tsuas yog tshwm sim nyob rau hauv cov duab ntawm txog 4.1 lab "duab" pixels, los yog ob zaug tus naj npawb li 1080p.
Rau 1080p thiab qis dua cov ntsiab lus ntawm cov ntsiab lus, hauv Epson thiab JVC, ob lub pixel hloov tshuab siv cov duab (hauv txhais tau tias, koj cov DVD thiab Blu-Ray Disc collection yuav tau txais xov xwm nthuav dav dua 1080p tus qauv).
Nws yuav tsum raug taw qhia tias thaum Pixel Shift tshuab qhib lub tshuab ua haujlwm, nws tsis ua haujlwm rau 3D saib. Yog tias pom ib qho teebmeem 3D los yog Motion Interpolation yog qhib, eShift lossis 4K Enhancement yuav raug kaw, thiab cov duab tso tawm yuav tsum yog 1080p.
Piv txwv ntawm Epson 4Ke Projectors .
Piv txwv ntawm JVC eShift Projectors.
Texas Instruments Approach Rau DLP Projectors
Epson thiab JVC yog cov tswvcuab hauv cov haujlwm uas siv cov tshuab LCD, tabsis qhov kev hloov ntawm pixel hloov tau tsim rau Texas Instruments DLP qhov project khiav lag luam.
Tsis txhob siv 1080p DLP nti, Texas Instruments muab ib lub nti pib nrog 2716x1528 (4.15 lab) pixels (uas yog ob zaug tus naj npawb uas Epson thiab JVC chips pib nrog).
Qhov no txhais tau hais tias yog thaum Pixel ua haujlwm thiab kev yees duab ntxiv ua rau DVR siv lub TI system, tsis txog li 4 lab pixels, lub projector xa tawm 8.3 lab "duab" pixels rau qhov kev tshuaj ntsuam - ob npaug li ntau li JVC lub eShift thiab Epson lub 4Ke. Txawm hais tias qhov no tsis yog tib yam nkaus li Sony tus Native 4K, nyob rau hauv tias nws tsis pib nrog 8.3 lab lub cev pixels, nws tuaj ntawm visually qhov ze, ntawm tus nqi piv rau lub system siv los ntawm Epson thiab JVC.
Xws li nrog Epson thiab JVC systems, cov video signals yuav nce los yog ua tiav raws li, thiab, thaum saib cov ntsiab lus 3D, Pixel Shifting txheej txheem yog neeg xiam oob khab.
Optoma yog thawj tus siv TI UHD system, kom ua raws li Acer, Benq, SIM2, Casio, thiab Vivitek (nyob twj ywm tshiab).
04 ntawm 05
Lub Neej Ncig: Sony Mus Nws Nws Ib Leeg
Sony muaj kev xav mus nws tus kheej txoj kev (nco BETAMAX, miniDisc, SACD, thiab DAT suab cassettes?) Thiab lawv kuj ua li ntawd rau hauv 4K video projection. Siv ntau qhov nqi pixel hloov mus kom ze, txij thaum pib Sony tau ncaim "Haiv 4K", thiab tau ua suab nrov heev txog nws.
Lub hom phiaj ntawm haiv neeg txhais tau licas tias tag nrho cov tsim nyog pixels uas yuav tsum tau tsim ib qhov duab 4K yog muab tso rau hauv ib lub nti (los yog ua tau peb daim tawv nqaij - ib qho rau txhua tus thawj xim).
Nws tseem ceeb heev uas yuav tsum nco ntsoov tias qhov pixel suav ntawm Sony's 4K chips yog 8.8 lab pixels (4096 x 2160), uas yog tib tus qauv siv coj mus muag xinesmas 4K. Qhov no txhais tau hais tias tag nrho cov neeg raws li 4K cov ntsiab lus (Ultra HD Blu-tshav, thiab lwm yam ...) tau txais me ntsis boost rau qhov ntxiv 500,000 pixel suav.
Txawm li cas los xij, Sony tsis siv pixel hloov kev ua haujlwm rau project 4K zoo li cov duab mus rau ib qho screen. Kuj, 1080p (xws li 3D) thiab sab kev daws teeb meem yog upscaled rau "4K zoo li" duab zoo.
Qhov zoo ntawm Sony txoj kev ua tau zoo, ntawm chav kawm, yog tias tus neeg tau txais kev pab cuam yuav ib lub yeeb yaj duab video nyob rau hauv uas muaj pes tsawg lub cev pixels yog tiag tiag me ntsis ntau tshaj rau ib tug 4K Ultra HD TV.
Qhov tsis zoo ntawm Sony lub 4K projectors yog tias muaj cov kim heev, nrog pib nqi ntawm txog $ 8,000 (raws li ntawm 2017). Ntxiv tus nqi ntawm ib lub screen tsis tsim, thiab cov kua ntawd yuav kim dua li yuav ib lub vijtsam loj 4K Ultra HD TV - tabsis yog tias koj tab tom nrhiav ib daim duab 85-nti lossis loj dua, thiab xav kom koj tau txais qhov tseeb 4K, Sony mus kom ze yog ib qhov kev xaiv ntshaw.
Piv txwv ntawm Sony 4K Video Projectors
05 ntawm 05
Lub Kab Hauv Qab
Yuav ua li cas tag nrho cov saum toj no rhaub kom yog 4K qhov kev daws teeb meem, nrog rau kev siv hom kev siv los ntawm Sony, yog siv rau feem ntau ntawm cov kev tsim yeeb yaj kiab tshaj nws yog hauv TV. Yog li, txawm hais tias nws tsis tas yuav tsum paub tag nrho cov lus qhia, thaum mus yuav khoom rau "4K" video projector, cov neeg siv yuav tsum paub txog cov ntawv xws li Native, e-Shift, 4K Enhancement (4Ke), thiab TI DLP UHD system.
Muaj kev sib cav sib ceg, nrog cov neeg tawm tswv yim rau ob sab, hais txog cov kev pixel hloov ua ib qhov chaw hloov 4K - koj yuav hnov cov lus "4K" "Faux-K", "Pseudo 4K", "4K Lite", tossed nyob ib ncig ntawm koj raws li video projector xyuas thiab kav tom koj lub zos neeg muag khoom.
Thaum pom cov duab siv txhua yam ntawm cov kev xaiv saum toj no los ntawm Sony, Epson, JVC, thiab tsis ntev los no Optoma, feem ntau nws yog qhov nyuaj rau qhia qhov txawv ntawm txhua txoj kev mus kom ze, tshwj tsis yog tias koj tau ze ze ntawm qhov screen, yog saib nyob rau hauv ib qho chaw tswj kev sib tw uas koj saib ib qho kev sib piv ntawm ib qho ntawm txhua lub projector uas tseem raug rau lwm yam (xim, zoo ib, lub teeb qhov muag).
Hom 4K tej zaum yuav zoo ib yam "ntse" nyob ntawm qhov ntsuas me me (kos cov npo 120 inches thiab up), thiab qhov chaw zaum ze ntawm qhov screen - Tiam sis, muab nws yooj yim, koj ob lub qhov muag tsuas yuav kho tau ntau yam heev - tshwj xeeb tshaj yog nrog cov duab txav mus los. Ntxiv qhov tseeb hais tias muaj ntau qhov kev hloov hauv peb txhua tus pom li cas, tsis muaj qhov ntsuas me me los yog saib qhov nrug uas yuav tsim qhov kev pom sib txawv rau txhua tus saib.
Nrog cov nqi sib txawv ntawm cov neeg (qhov twg pib pib ntawm kwv yees li $ 8,000) thiab pixel hloov (qhov twg pib pib ntawm tsawg dua $ 3,000), uas yog ib qho tseem ceeb rau qhov xav, tshwj xeeb tshaj yog tias koj pom tias kev pom kev zoo sib xws.
Tsis tas li ntawd, nco ntsoov tias qhov kev daws teeb meem, txawm hais tias tseem ceeb, yog qhov zoo tshaj plaws rau hauv kev tau zoo duab zoo - kuj siv lub hom phiaj ntawm lub teeb , lub teeb tso zis , thiab xim ci ntsa iab rau hauv kev xav, thiab tsis hnov qab qhov zoo rau qhov zoo screen .
Nws yog ib qho tseem ceeb uas ua rau koj tus kheej cov kev soj ntsuam los txiav txim siab twg daws qhov zoo tshaj plaws rau koj, thiab qhov twg tshwj xeeb brand / qauv haum rau koj cov nyiaj.