Tom qab ob peb xyoos ntawm kev tshawb fawb thiab kev loj hlob, cov duab tau txais technology ntawm LCD lub tsev advertising tshuab tau mus txog ib qho kev loj hlob, tab sis kev ua lag luam yuav tsum tau nce siab dua. Tam sim no koj tuaj yeem pom LCD tshuab luam ntawv tshaj tawm tsis hais koj nyob qhov twg. Hnub no, Rongda Caijing cov kws tshaj lij yuav coj koj. Nkag siab cov duab ntes tshuab ntawm LCD lub tsev tshaj tawm tshuab.
Txhawm rau ua kom pom cov duab tseeb xim ntawm lub vijtsam ntawm LED lub tsev tshaj tawm tshuab, lub sijhawm tiag tiag ntawm cov teeb liab video yuav tsum tau daws ua ntej, thiab cov cim video analog yuav tsum tau sau rau hauv cov duab digital video. Qhov kev xyaum ua thaum ntxov yog siv daim npav video thiab qee daim npav VGA nrog feature-txuas kom paub nws.
Daim npav video capture yog siv los ntes cov dluab video, thiab tom qab ntawd tau txais lub teb zaus, kab zaus, pixel zaus thiab qhov chaw nyob qhov chaw nyob ntawm lub rooj saib xim los ntawm VGA feature chaw nres nkoj. Thaum taug qab cov duab CRT, cov xim liab thiab ntsuab tuaj yeem tau los ntawm kev luam cov xim saib lub rooj. , xiav cais cov teeb liab. Ib txoj hauv kev yog siv software los rov ua dua tshiab tsis tu ncua, thiab lwm qhov yog siv cov cuab yeej nyiag khoom siv cuab yeej cuab tam, uas ua tau zoo dua thiab nrawm dua.
Tsev tshaj tawm tshuab duab
Vim tias qhov tsis zoo ntawm cov cuab yeej siv tau hais los saum toj no, xws li kev sib raug zoo tsis zoo nrog VGA phaib, cov npoo tsis meej, thiab cov duab tsis zoo, cov duab zoo tso tawm ntawm lub vijtsam ntawm lub tsev tshaj tawm cov cav tov kuj raug txwv. Tsim tshwj xeeb daim npav video JMC-LED rau LED lub tsev advertising tshuab zaub screen. Daim npav yog raws li PCI tsheb npav, siv 64-ntsis graphics accelerator, ua ke VGA thiab video ua haujlwm rau hauv ib qho, yog lub luag haujlwm rau cov superposition ntawm cov ntaub ntawv video thiab VGA cov ntaub ntawv, xim qhov chaw hloov pauv, thiab hauv paus daws teeb meem kev sib raug zoo. Kev daws teeb meem puv npo yog siv, YUV4: 2: 2 uncompressed cia tshuab ua kom zoo dua ntawm cov duab video, thiab lub qhov rais video txais EST ntug txhim kho thev naus laus zis los xyuas kom meej meej ntawm cov duab tom qab scaling. Cov hom kev txhawb nqa yog PAL thiab NTSC, thiab lub qhov rais video tuaj yeem scaled thiab txav arbitrarily.
Daim npav tuaj yeem rho tawm ob peb lub cim synchronous ntawm thaj chaw zaus, kab zaus thiab pixel zaus yuav tsum tau ua rau kev ua yeeb yaj kiab ntawm lub vijtsam ntawm lub tsev tshaj tawm tshuab, thiab cais cov cim liab, ntsuab thiab xiav. Cov hom RGB digital yog 8: 8: 8, txhua tus tuaj yeem tsim 256 greyscales, uas tuaj yeem ua tau raws li cov kev xav tau ntawm cov xim tiag tiag playback ntawm lub vijtsam ntawm lub tsev tshaj tawm.
