Yuav ua li cas xaiv cov kab pheeb ces kaum ntawm lub TV npo

prehistory

Thawj lub vis dis aus tso rau hauv ntau lawm tso tawm cov duab uas siv cathode txoj sab ci raj (CRT) los yog lub raj ua duab. Lub thev naus laus zis tsis zoo tag nrho, tab sis thaum lub sij hawm tsim hluav taws xob ntau hauv 1934, nws yog kev hloov kho. Qhov tsis txaus ntseeg ntawm lub thev naus laus zis yog lub hauv paus ntawm kinescope. Lub cathode txoj sab ci hluav taws xob tawm cov dej ntws hluav taws xob uas cuam tshuam rau lub vijtsam thiab cov xim sab laug.

 

 

Hmoov tsis zoo, ib feem ntawm cov hluav taws xob tau ua lawv txoj kev los ntawm kev tshuaj ntsuam thiab mus txog tus saib, thiab qhov tshwm sim no tau hu ua "hluav taws xob". Vim tias muaj hluav taws xob thiab nws cov txiaj ntsig ntawm tib neeg lub cev, muaj kev txwv tsis pub muaj kev ncua deb uas koj tuaj yeem saib TV, thiab txwv tsis pub dhau lub sijhawm thaum nws ua tau, kuj muaj kev nyab xeeb, txaus siab rau qhov koj nyiam TV qhia. Muaj kev nyab xeeb, nws tau txiav txim siab qhov kev ncua deb ntawm 4-5 m rau lub TV TV, muab cov xov xwm me me ntawm CRT TV, nws nyuaj rau hu qhov TV saib yooj yim.

Tam sim no

Ntau lub sijhawm tau dhau mus txij li lub kiv puag ncig ntawm CRT TV thiab tag nrho cov thev naus laus zis tshiab Plasma, LCD (kua muaju), LED (LED backlighting) tau nkag mus rau theem. Dhau ntawm cov plasma TVs, uas, zoo li CRT TVs, muaj qhov siab ntawm hluav taws xob, LCD thiab LED TVs tsis muaj hluav taws xob zoo li no, vim tias lawv ua haujlwm ntawm txoj kev sib txawv ntawm cov duab tso tawm.

 

 

Hloov chaw ntawm cathode txoj kab hluav taws xob tso rau ntawm cov xaim hluav taws xob, cov xov tooj siv lead ua kua siv hluav taws xob ua haujlwm siv lub teeb nthwv dej uas hla dhau RGB matrix ntawm lub vijtsam. Qhov tsis muaj hluav taws xob hauv hluav taws xob yuav luag tshem tawm qhov xav tau kom txav tawm ntawm TV mus rau qhov chaw deb. Tam sim no nrog cov thev naus laus zis tshiab, qhov deb uas koj tuaj yeem saib TV tuaj yeem yog txhua yam.

Tag nrho cov saum toj no yog xav tshem tawm cov kev xav ntawm qhov tsis tu ncua ntawm qhov deb uas koj tuaj yeem saib TV thiab kab pheeb ces kaum, vim hais tias qhov chaw tawg thiab thaj chaw nyab xeeb ua rau muaj kev nkag siab zoo nyob rau hauv rooj plaub ntawm CRT TV, thiab qhov no yog keeb kwm.

 

Tab sis muaj ib qho tseem ceeb!

Yuav ua li cas xaiv cov kab pheeb ces kaum ntawm lub TV npo?

Ib qho tseem ceeb uas tau hais los saud yog qhov screen daws teeb meem. Qhov tseeb yog tias yog lub TV uas muaj kab pheeb ces loj, piv txwv li, 55 nti, muaj lub vijtsam daws teeb meem ntawm FULL HD (1920x1080 pixels), tom qab ntawd thaum koj saib lub TV ze heev, txog 1 metres, koj tuaj yeem pom pixels ntawm lub vijtsam.

Tab sis tau txais qhov ntawd, raws li txoj cai, lawv saib TV ntawm qhov deb ntawm 1,5-2 m, nws yog qhov nyuaj heev kom pom lawv los ntawm cov kev ncua deb. Ib qho ntxiv, cov vis dis aus uas muaj kab pheeb ces kaum txog 40 nti tam sim no muaj FULL HD daws teeb meem, TV uas muaj kab pheeb suab loj dua twb muaj Ultra HD 4K daws teeb meem (3840 × 2160 pixels).

 

 

Yuav ua li cas xaiv cov kab pheeb ces kaum ntawm lub TV npo? Cov lus teb tau yooj yim: ntau qhov zoo dua. Yog tias koj muaj txoj hauv kev yuav ib lub TV nrog kab pheeb ces kaum ntawm 40 nti - qhov ntawd zoo heev! Yog koj ua tau yuav lub TV nrog 80 nti - nws zoo dua. Tab sis saib lub TV qhov kev daws teeb meem, cov khoom siv hluav taws xob txog 50 nti yuav muaj FULL HD daws teeb meem, rau cov piv txwv Ultra HD 4K daws teeb meem yuav ntau dhau, vim nws yuav tsis tuaj yeem pom qhov txawv.

 

 

Tab sis TVs los ntawm 52-55 nti thiab siab dua yuav tsum muaj Ultra HD 4K kev daws teeb meem, vim tias nrog kev daws teeb meem qis dua ntawm cov kab pheeb ces loj, kev zoo siab yuav pom thaum saib lub TV.