Yog Tag Nrho LCD TVs Tseem HDTVs?

Thaum nws los rau LCD TVs ( LED TVs yog LCD TVs! ), Ntau tus neeg tau txais kev pom zoo tias LCD sib npaug HDTV. Txawm li cas los xij, nws yuav tsum raug sau tseg tias "LCD" tsis muaj dab tsi ua rau kev daws teeb meem, tab sis cov tshuab siv los tsim cov duab uas pom hauv LCD TV npo. LCD TV panels tuaj yeem ua kom pom cov kev tsim kho, uas tau hais hauv Pixels . Nws tseem ceeb heev kom taw tes tias qhov luaj li cas ntawm LCD TV npo tsis txhais tias nws yog ib qho HDTV yog.

Cov nram qab no yog ib qho kev piav qhia ntawm kev sib txuas ntawm LCD technology thiab cov kev sib kho teeb meem sib tshuam.

SDTV thiab EDTV

Yog tias koj muaj ib lub LCD TV uas tau tsim nyob rau thaum xyoo 2000 los sis ua ntej, nws yuav yog ib qho SDTV (Standard Definition TV) los yog EDTV (Extended Definition TV) thiab tsis yog HDTV.

SDTVs muaj ib qho teeb meem ntawm 740 x 480 (480p). Cov "p" sawv cev rau kev kuaj ntsuas , uas LCD TVs qhia txog pixels thiab cov duab nyob ntawm ib qho screen.

EDTVs feem ntau muaj hom pixel daws teeb meem ntawm 852 x 480. 852 x 480 nruab nrab yog 852 pixels hla (sab laug mus rau sab xis) thiab 480 pixels (saum toj mus rau hauv qab) ntawm qhov screen. Tus 480 pixels down kuj sawv cev ntawm cov naj npawb ntawm cov kab los yog cov kab ntawm cov saum toj mus rau hauv qab ntawm qhov screen. Qhov no yog siab dua tus qauv txhais, tab sis nws tsis tau raws li cov kev cai ntawm HDTV daws teeb meem.

Cov duab ntawm cov khoom poob no tseem pom zoo, tshwj xeeb tshaj yog rau DVDs thiab tus qauv digital kab, tab sis nws tsis yog HDTV. DVD yog tus Txheem Lus Txhais nws txhawb 480i / p daws teeb meem (740 x 480 pixels).

LCD thiab HDTV

Hauv kev txiav txim rau cov TV (uas txhais tau tias LCD TVs) yuav tsum yog cais raws li HDTV, nws yuav tsum muaj peev xwm tso saib qhov daws teeb meem ntawm 720 kab (los yog pixel natwm). Vijtsam tso tawm cov qauv uas tsim nyog (haum hauv pixels) yog 1024x768, 1280x720 , thiab 1366x768.

Txij li thaum lub TV thev naus laus zis muaj cov pixels kawg nkaus (piv txwv tias, yog lub teeb pom kev ruaj ruaj), cov teeb liab uas muaj ntau tshaj tawm yuav tsum tau ua kom haum kom haum pixel teb suav ntawm cov duab LCD.

Piv txwv, ib hom HDTV input 1080i los yog 1080p xav tau ib qho duab ntawm 1920 x 1080 pixels rau ib qho taw qhia ib qho ntawm HDTV duab. Tsis tas li ntawd, txij li yav tas los, raws li tau hais yav tas los, LCD Televisions tsuas tso cov duab scoped ntsia, 1080i qhov chaw pib muaj qhov sib deevlaced mus rau 1080p los yog scaled mus txog 768p (1366x768 pixels), 720p, los yog 480p nyob ntawm qhov kev daws teeb meem ntawm cov kev siv LCD TV .

Hauv lwm lo lus, tsis muaj ib yam zoo li 1080i LCD TV. LCD TVs tsuas tuaj yeem tso saib video nyob rau hauv ib lub voj voog loj tuaj, yog tias koj tus LCD TV lees txais lub 1080i input teeb liab, LCD TV muaj deinterlace thiab rescale 1080i input teeb liab rau 720p / 768p hauv TVs nrog 1366x768 los yog 1280x720 haiv neeg pixel daws teeb meem los yog 1080p ntawm LCD TVs nrog 1920 x 1080 haiv neeg pixel daws teeb meem.

Tsis tas li ntawd, yog tias koj lub TV LCD tsuas muaj pixel teb ntawm 852 x 480 lossis 1024x768, yuavtsum hla HDTV teeb liab kom haum rau 852x480 lossis 1024x768 pixel suav rau ntawm npo LCD. HDTV teeb liab inputs yuav tsum tau scaled mus haum tus LCD TV tus kheej pixel teb.

Ultra HD TV thiab Beyond

Nrog kev nce qib hauv cov cuab yeej tsim technology, muaj ntau tus lej LCD TVs uas muaj 4K (3840 x 2160 pixels) cov rooj teeb rooj (hu ua Ultra HD).

Tsis tas li ntawd, TVs uas muaj peev xwm txhawb tau 8K (7680 x 4320 pixels) tsis muaj rau cov tau txais kev pab raws li xyoo 2017, tab sis, yuav tsum xyuas raws li nws xav tias lawv yuav siv tau, tsawg kawg ntawm cov xov tooj tsawg, los ntawm 2020.

Lub Kab Hauv Qab

Thaum mus yuav ib lub TV LCD TV hnub no, koj tuaj yeem paub zoo tias feem coob tau ntsib tsawg kawg qhov yuav tsum tau ua kom thiaj li yog HDTV. Cov TV uas muaj 32-inches los yog tsawg dua yuav tsum muaj 720p lossis 1080p haiv neeg cov kev cai, TVs 39-inches thiab loj dua tuaj yeem ua rau 1080p (HDTV) los yog Ultra HD (4K) hauv cov qauv tshuaj pom.

Txawm li cas los xij, tej zaum yuav muaj cov kab mob hauv TV 24 ntiv thiab me me, uas koj yuav ntsib 1024x768 teeb meem, tab sis qhov tseeb yog hnub no.

Cia li nco ntsoov tias tseem muaj qee cov laus dua LCD TVs siv uas yog SDTVs los yog EDTVs - yog tias koj tsis paub meej tias koj li yog, nqa cov ntawv sau txog cov ntawv, nrog koj tus neeg siv phau ntawv, los yog hu rau tech yug rau koj hom / qauv yog tias ua tau.