Xim ntau ntawm lub khoos phis tawj yog txhais los ntawm lub sijhawm xim qhov tob, uas yog cov xim uas cov cuab yeej tuaj yeem tso tawm, muab nws cov khoom siv. Feem ntau cov xim qhov tob koj yuav pom yog 8-ntsis (256 xim), 16-ntsis (65, 536 xim), thiab 24-ntsis (16.7 lab xim) hom. Cov xim tiag tiag (lossis 24-ntsis xim) yog hom siv ntau tshaj plaws vim cov khoos phis tawj tau nce qib txaus los ua haujlwm tau zoo ntawm qhov xim qhov tob.
Qee tus kws tsim qauv thiab kws yees duab siv 32-ntsis xim qhov tob, tab sis feem ntau yog txhawm rau txhawm rau cov xim kom tau txais cov suab lus txhais ntau dua thaum qhov project renders mus rau qib 24-ntsis.
Speed vs. Xim
LCD saib tawm tsam nrog xim thiab nrawm. Xim ntawm lub LCD muaj peb txheej ntawm cov xim dots uas ua rau lub pixel kawg. Txhawm rau tso cov xim, tam sim no yog siv rau txhua txheej xim los tsim kom muaj qhov xav tau siv uas ua rau xim kawg. Qhov teeb meem yog tias kom tau txais cov xim, tam sim no yuav tsum txav cov crystals rau thiab tawm mus rau qhov xav tau siv ntau ntau. Qhov kev hloov pauv no los ntawm lub xeev on-to-off yog hu ua lub sij hawm teb. Rau feem ntau cov ntxaij vab tshaus, nws tus nqi nyob ib ncig ntawm 8 mus rau 12 milliseconds.
Qhov teeb meem nrog lub sijhawm teb yuav tshwm sim thaum LCD saib pom cov lus tsa suab lossis yees duab. Nrog lub sij hawm teb siab rau kev hloov pauv ntawm lub xeev off-rau-on, pixels uas yuav tsum tau hloov mus rau qib xim tshiab taug qab lub teeb liab thiab ua rau muaj kev cuam tshuam hu ua suab tsis meej. Qhov tshwm sim no tsis yog qhov teeb meem yog tias tus saib pom cov ntawv thov xws li software tsim khoom. Txawm li cas los xij, nrog kev ua yeeb yaj kiab siab thiab qee qhov kev ua si video, nws tuaj yeem ua rau tsis xis nyob.
Vim tias cov neeg siv khoom xav tau cov ntxaij vab tshaus nrawm dua, ntau lub tuam txhab tau txo cov qib ntawm txhua qhov xim-pixel renders. Qhov kev txo qis hauv qib siv no tso cai rau lub sijhawm teb kom poob thiab muaj qhov tsis zoo ntawm kev txo qis tag nrho cov xim uas cov ntxaij vab tshaus txhawb nqa.
6-ntsis, 8-ntsis, lossis 10-ntsis xim
Xim qhov tob tau raug xa mus rau tag nrho cov xim uas lub vijtsam tuaj yeem ua tau. Thaum xa mus rau LCD panels, tus naj npawb ntawm cov qib uas txhua xim tuaj yeem siv los hloov.
Piv txwv li, 24-ntsis lossis xim tseeb yog muaj peb xim, txhua yam muaj yim xim. Ua lej, qhov no yog sawv cev raws li:
2^8 x 2^8 x 2^8=256 x 256 x 256=16, 777, 216
Cov ntsuas kub ceev LCD feem ntau txo cov lej ntawm txhua xim rau 6 es tsis txhob tus qauv 8. Cov xim 6-ntsis no tsim cov xim tsawg dua 8-ntsis, raws li peb pom thaum peb ua lej:
2^6 x 2^6 x 2^6=64 x 64 x 64=262, 144
Qhov kev txo qis no pom tau rau tib neeg lub qhov muag. Kom tau txais ib ncig ntawm qhov teeb meem no, cov tuam txhab tsim khoom siv cov txheej txheem hu ua dithering, qhov chaw nyob ze pixels siv cov xim sib txawv me ntsis uas ua rau tib neeg lub qhov muag pom cov xim uas xav tau txawm tias nws tsis yog xim tiag tiag. Daim duab ntawv xov xwm xim yog ib txoj hauv kev zoo kom pom cov nyhuv no hauv kev xyaum. Hauv kev luam tawm, cov nyhuv yog hu ua halftones. Siv cov txheej txheem no, cov tuam txhab lag luam thov kom ua tiav cov xim tob ze ntawm qhov tseeb xim qhia.
Vim li cas muab pawg ntawm peb? Rau lub computer qhia, RGB colorspace dominates. Qhov ntawd txhais tau tias, rau 8-ntsis xim, cov duab kawg uas koj pom ntawm qhov screen yog ib qho ntawm 256 ntxoov liab, xiav, thiab ntsuab.
Muaj lwm qib ntawm cov zaub uas siv los ntawm cov kws tshaj lij hu ua 10-ntsis zaub. Hauv txoj kev xav, nws nthuav tawm ntau dua li ib lab xim, ntau dua li tib neeg lub qhov muag pom.
Muaj qee qhov tsis zoo rau cov hom khoom no:
- Tus nqi ntawm cov ntaub ntawv xav tau rau cov xim zoo li no yuav tsum muaj cov ntaub ntawv sib txuas-high-bandwidth. Feem ntau, cov saib thiab daim npav video no siv DisplayPort connector.
- Txawm hais tias daim npav daim npav ua rau nce siab ntawm ib lab xim, cov zaub cov xim gamut-lossis ntau yam xim nws tuaj yeem pom-yog qhov tsawg dua. Txawm tias cov xim ultra-wide gamut qhia uas txhawb 10-ntsis xim tsis tuaj yeem ua txhua yam xim.
- Cov lus qhia no yuav qeeb dua thiab kim dua, yog vim li cas cov khoom no tsis nyiam rau cov neeg siv khoom hauv tsev.
Yuav Qhia Yuav Ua Li Cas Muaj Ntau Yam Khoom Siv Khoom Siv
Kev tshaj lij qhia feem ntau tout 10-ntsis xim txhawb. Ib zaug ntxiv, koj yuav tsum saib cov xim tiag tiag ntawm cov duab no. Cov neeg siv khoom siv feem ntau tsis hais tias lawv siv pes tsawg. Hloov chaw, lawv nyiam sau cov xim uas lawv txhawb.
- Yog tias cov chaw tsim khoom sau cov xim li 16.7 lab xim, xav tias cov zaub yog 8-ntsis ib-xim.
- Yog cov xim muaj npe li 16.2 lab lossis 16 lab, nkag siab tias nws siv 6-ntsis ib-xim qhov tob.
- Yog tias tsis muaj xim qhov tob tau teev tseg, xav tias kev saib xyuas ntawm 2 ms lossis sai dua yuav yog 6-ntsis, thiab feem ntau uas yog 8 ms thiab qeeb qeeb yog 8-ntsis.
Nws Puas Tseem Ceeb?
Tus nqi xim tseem ceeb rau cov uas ua haujlwm tshaj lij ntawm cov duab. Rau cov neeg no, tus nqi ntawm cov xim uas pom ntawm qhov screen yog qhov tseem ceeb. Cov neeg siv khoom nruab nrab yuav tsis xav tau qib no ntawm cov xim sawv cev los ntawm lawv cov saib. Yog li ntawd, tej zaum nws yuav tsis muaj teeb meem. Cov neeg siv lawv cov lus qhia rau kev ua yeeb yaj kiab lossis saib cov yeeb yaj kiab yuav tsis mob siab txog cov xim uas ua los ntawm LCD tab sis los ntawm qhov ceev uas nws tuaj yeem tso tawm. Yog li ntawd, nws yog qhov zoo tshaj los txiav txim siab koj cov kev xav tau thiab ua raws li koj qhov kev yuav khoom ntawm cov qauv no.
