Txij li thaum nws tau nthuav tawm xyoo 2012, kev ua tiav ntawm 4K Ultra HD TV yog qhov tsis lees paub. Hauv kev sib piv rau 3DTV, cov neeg siv khoom tau dhia ntawm 4K bandwagon vim nws qhov kev daws teeb meem nce ntxiv, HDR, thiab cov xim dav dav. Txhua tus tau txhawb nqa kev saib TV.
Thaum Ultra HD TVs ya tawm ntawm lub khw muag khoom, feem ntau hauv tsev ua yeeb yaj kiab video projectors yog 1080p ntau dua li 4K. Kev koom ua ke 4K rau hauv ib qho video projector kim dua TV, tab sis qhov ntawd tsis yog tag nrho zaj dab neeg.
Nws yog Txhua Yam Txog Pixels
Ua ntej plunging mus rau hauv yuav ua li cas manufacturers siv 4K hauv TVs vs. video projectors, peb xav tau ib tug siv. Qhov taw tes ntawd yog pixel.
Ib pixel yog ib daim duab uas muaj cov ntaub ntawv liab, ntsuab, thiab xiav xim (hu ua sub-pixels). Lub TV lossis video projection screen yuav tsum muaj ntau pixels los tsim cov duab tag nrho. Tus naj npawb ntawm pixels uas tuaj yeem pom tau txiav txim siab qhov kev daws teeb meem ntawm lub vijtsam.
Yuav Ua Li Cas 4K Hauv TVs
TVs muaj lub vijtsam loj loj los ntim cov pixels xav tau los tso saib qhov kev daws teeb meem tshwj xeeb.
Txawm hais tias qhov screen loj npaum li cas rau 1080p TVs, muaj 1, 920 pixels hla lub vijtsam kab rov tav (ib kab) thiab 1, 080 pixels nce thiab nqis ntawm lub vijtsam ntsug (ib kab). Txhawm rau txiav txim siab tus naj npawb ntawm pixels npog qhov screen saum npoo, muab tus lej ntawm kab rov tav pixels nrog cov lej ntawm ntsug pixels. Rau 1080p TVs, uas 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 kwv yees li 8 lab pixels puv npo.
Qhov ntawd yog ntau pixels, tab sis nrog TV qhov ntau thiab tsawg ntawm 40, 55, 65, 75, lossis 80 ntiv tes, cov chaw tsim khoom muaj thaj tsam loj (hais lus).
Txawm hais tias cov duab ua haujlwm rau ntawm lub vijtsam loj rau DLP thiab LCD video projectors, lawv dhau los lossis cuam tshuam cov chips hauv lub projector uas me dua li LCD lossis OLED TV vaj huam sib luag.
Hauv lwm lo lus, tus lej xav tau ntawm pixels yuav tsum me dua kom haum rau hauv nti nrog cov duab plaub uas tsuas yog kwv yees li 1-nti square. Nws yuav tsum tau ntau lawm ntau lawm thiab tswj kom zoo, nce tus nqi rau cov chaw tsim khoom thiab cov neeg siv khoom.
Vim li ntawd, kev siv 4K daws teeb meem hauv cov yeeb yaj kiab video tsis ncaj ncees raws li nws nyob hauv TV.
Txoj Kev Hloov Pauv: Txiav Tus Nqi
Vim tias nyem tag nrho cov pixels xav tau rau 4K ntawm cov chips me yog kim, JVC, Epson, thiab Texas Instruments muaj lwm txoj hauv kev uas ua rau pom qhov pom ntawm tus nqi qis dua. Lawv txoj kev yog Pixel Shifting. JVC hais txog nws qhov system li eShift, Epson hais txog nws li 4K Enhancement (4Ke), thiab Texas Instruments tsis raug hais txog nws li TI UHD.
Epson thiab JVC Txoj Kev rau LCD Projectors
Txawm hais tias muaj qhov sib txawv me ntsis ntawm Epson thiab JVC systems, ntawm no yog qhov tseem ceeb ntawm ob txoj hauv kev no ua haujlwm li cas.
Hloov chaw pib nrog lub nti kim uas muaj tag nrho 8.3 lab pixels, Epson thiab JVC pib nrog tus qauv 1080p (2.1 lab pixels) chips. Hauv lwm lo lus, ntawm lawv qhov tseem ceeb, Epson thiab JVC projectors yog 1080p video projectors.
Nrog eShift lossis 4Ke system qhib, thaum kuaj pom 4K video input signal (xws li los ntawm Ultra HD Blu-duab tshav thiab xaiv cov kev pabcuam streaming), nws tau faib ua ob 1080p duab (txhua nrog ib nrab ntawm 4K. cov ntaub ntawv duab). Lub projector nrawm hloov txhua pixel diagonally rov qab-thiab-tawm los ntawm ib nrab-pixel dav thiab ua haujlwm qhov tshwm sim rau ntawm qhov screen. Kev hloov pauv tau nrawm, ua rau tus neeg saib nkag siab txog qhov tshwm sim raws li kwv yees qhov zoo ntawm 4K daws teeb meem duab.
Vim tias kev hloov pauv pixel tsuas yog ib nrab ntawm pixels, qhov pom kev pom yuav zoo li 4K dua 1080p, txawm tias, technically, tsis muaj ntau pixels tso tawm ntawm lub vijtsam. Epson thiab JVC's pixel hloov cov txheej txheem ua rau pom txog 4.1 lab pom pixels lossis ob npaug ntawm tus lej li 1080p.
Rau 1080p thiab cov ntsiab lus daws teeb meem qis dua, hauv ob qho tib si Epson thiab JVC systems, pixel hloov pauv thev naus laus zis txhawb cov duab. Hauv lwm lo lus, koj daim DVD thiab Blu-duab tshav Disc tau txais kev nthuav dav ntxiv tshaj tus qauv 1080p projector.
Thaum Pixel Shift tshuab qhib, nws tsis ua haujlwm rau 3D saib. Yog tias pom cov teeb liab 3D nkag los lossis Motion Interpolation tau qhib, eShift lossis 4K Enhancement yuav raug kaw, thiab cov duab tso tawm yog nyob rau hauv 1080p.
Nws tsim nyog saib cov piv txwv ntawm Epson 4Ke projectors thiab JVC eShift projectors.
Tus Texas Instruments Approach rau DLP Projectors
Epson thiab JVC ntiav LCD thev naus laus zis. Texas Instruments tau tsim qhov hloov pauv pixel hloov pauv rau nws qhov DLP projector platform.
Texas Instruments muaj ob txoj kev xaiv rau 4K-zoo li zaub:
- Ib qho kev xaiv siv 1080p daws teeb meem DLP nti zoo ib yam li Epson thiab JVC pib nrog. Tsis txhob hloov cov pixels sai sai rov qab los ib zaug kom ua tiav 4K zoo li cov txiaj ntsig, tib lub sijhawm, cov pixels tau hloov ob zaug, ob qho tib si kab rov tav thiab ntsug. Qhov no ua rau pom qhov tseeb dua 4K-zoo li duab.
- Hloov chaw siv 1080p DLP nti, Texas Instruments muab lwm nti. Nws pib nrog 2716 x 1528 (4.15 lab) pixels (ob zaug tus lej uas Epson thiab JVC chips pib nrog). Tom qab ntawd nws hloov cov pixels diagonally hauv ib qho zoo sib xws li Epson thiab JVC ua.
Thaum cov txheej txheem Pixel Shift thiab kev ua yeeb yaj kiab ntxiv tau ua tiav hauv qhov projector siv TI system siv lawv 1080p lossis 2716 x 1528 nti, tsis yog li 4 lab pixels, lub projector xa tawm 8.3 lab pixels rau lub vijtsam..
Qhov no yog ob zaug ntau pixels li JVC eShift thiab Epson 4Ke projectors tso saib. Qhov system no tsis zoo ib yam li Sony's 4K, nyob rau hauv uas nws tsis pib nrog 8.3 lab lub cev pixels. Txawm li cas los xij, nws los pom qhov ze tshaj plaws, ntawm tus nqi piv rau cov kab ke siv los ntawm Epson thiab JVC.
Zoo li Epson thiab JVC cov tshuab, cov khoom xa tawm video tau nce qib lossis ua tiav raws li. Thaum saib 3D cov ntsiab lus, cov txheej txheem Pixel Shifting yog neeg xiam.
Optoma yog thawj tus siv TI UHD system, ua raws Acer, Benq, SIM2, Casio, thiab Vivitek.
Txoj Kev 4K Tiag tiag: Sony Mus Nws Ib Leeg
Sony nyiam mus rau nws tus kheej txoj kev (nco txog BETAMAX, miniDisc, SACD, thiab DAT audio cassettes?), thiab lawv tseem ua li ntawd hauv 4K video projection. Hloov chaw ntawm tus nqi ntau dua pixel hloov mus kom ze, Sony tau mus nrog 4K tiag tiag thiab tau hais lus txog nws.
Txoj hauv kev no txhais tau hais tias qhov tsim nyog pixels xav tau los tsim cov duab 4K daws teeb meem tau muab tso rau hauv ib lub nti (lossis peb lub chips-ib qho rau txhua xim thawj).
Lub pixel suav ntawm Sony 4K chips yog 8.8 lab pixels (4096 x 2160), tib tus qauv siv hauv kev lag luam xinesmas 4K. Txhua tus neeg siv khoom raws li 4K cov ntsiab lus (xws li Ultra HD Blu-duab tshav) tau txais kev txhawb nqa me ntsis rau qhov ntxiv 500, 000-pixel suav.
Txawm li cas los xij, Sony tsis siv cov txheej txheem hloov pixel los ua 4K-zoo li cov duab rau ntawm lub vijtsam. Tsis tas li ntawd, 1080p (xws li 3D) thiab cov kev daws teeb meem qis dua tau nce mus rau 4K-zoo li cov duab zoo.
Qhov kom zoo dua ntawm Sony txoj hauv kev yog tias cov neeg siv khoom tab tom yuav lub projector video uas tus lej ntawm lub cev pixels yog me ntsis ntau dua li ntawm 4K Ultra HD TV.
Qhov tsis zoo yog tias Sony 4K projectors kim, nrog tus nqi pib ntawm $ 5,000. Thaum koj ntxiv tus nqi ntawm lub vijtsam tsim nyog, kev daws teeb meem yuav raug nqi ntau dua li kev yuav lub vijtsam loj 4K Ultra HD TV. Txawm li cas los xij, yog tias koj tab tom nrhiav 85-nti lossis duab loj dua thiab xav tau 4K tiag tiag, Sony txoj hauv kev yog qhov kev xaiv zoo.
Txoj kab hauv qab
Nws npau taws mus rau 4K daws teeb meem, tshwj tsis yog Sony txoj kev, uas yog siv sib txawv ntawm feem ntau cov yeeb yaj kiab video dua li nws nyob hauv TV. Txawm hais tias nws tsis tsim nyog kom paub cov ntsiab lus kev tshaj lij thaum mus yuav khoom rau 4K video projector, yuav tsum paub txog cov ntawv sau xws li Native, e-Shift, 4K Enhancement (4Ke), thiab TI DLP UHD system.
Muaj kev sib cav txuas ntxiv, nrog cov neeg tawm suab ntawm ob tog, hais txog qhov zoo ntawm pixel hloov pauv hloov pauv rau 4K tiag tiag. Koj yuav hnov cov ntsiab lus 4K, Faux-K, Pseudo 4K, thiab 4K Lite tossed ib ncig thaum koj nyeem video projector tshuaj xyuas thiab khw ntawm koj lub khw muag khoom hauv zos.
Feem ntau, nws nyuaj rau qhia qhov txawv ntawm txhua txoj hauv kev tshwj tsis yog tias koj tau nyob ze ntawm lub vijtsam lossis saib qhov sib piv ntawm ib sab ntawm txhua hom projector ntsuas rau lwm yam (piv txwv li, xim, sib piv., thiab lub teeb tso zis).
Real 4K yuav zoo dua me ntsis nyob ntawm qhov screen loj (xyuas cov ntxaij vab tshaus 120 ntiv tes thiab siab dua) thiab qhov chaw zaum ntawm qhov screen. Txawm li cas los xij, koj ob lub qhov muag tsuas tuaj yeem daws ntau yam nthuav dav, tshwj xeeb tshaj yog nrog cov duab txav. Ntxiv rau, muaj kev hloov pauv nyob ntawm koj lub peev xwm pom. Tsis muaj qhov ntsuas qhov loj me lossis saib qhov deb uas ua rau tib qhov kev nkag siab sib txawv.
Nrog tus nqi sib txawv ntawm 4K tiag tiag (qhov twg tus nqi pib ntawm $ 5, 000) thiab pixel hloov (qhov twg tus nqi pib tsawg dua $ 2,000), tus nqi yog ib yam uas yuav tsum xav txog, tshwj xeeb tshaj yog tias koj pom tias qhov kev pom kev sib piv.
Qhov kev daws teeb meem, txawm tias tseem ceeb, yog ib qho tseem ceeb hauv kev tau txais cov duab zoo heev. Kuj xav txog txoj kev teeb pom kev zoo, lub teeb tso zis, xim ci, thiab xav tau lub vijtsam zoo.
Ua koj tus kheej kev soj ntsuam los txiav txim siab seb qhov kev daws teeb meem zoo li cas rau koj thiab hom thiab qauv twg haum rau koj cov peev nyiaj. Cov kauj ruam kawg yog los teeb tsa.
