Ntsiab cai ntawm VGA interface
Hais txog lub VGA interface, ntau cov phooj ywg yuav tsis txawv nrog nws, vim tias qhov interface no yog qhov tseem ceeb tshaj plaws ntawm lub tshuab computer. Los ntawm cov era ntawm loj loj CRT zaub, lub VGA interface tau siv, thiab nws twb tau muab siv mus txog rau tam sim no, thiab VGA interface tseem siv. Paub raws li D-Sub interface.
Ntau tus neeg xav tias qhov HDMI nkaus xwb tuaj yeem xa tawm cov teeb liab HD, tab sis nws tsis yog lawm, vim tias kev sib txuas VGA tseem tuaj yeem tso saib 1080P cov duab, thiab txawm tias qhov kev daws teeb meem yuav siab dua, yog li siv nws mus txuas cov khoom siv. Tsis muaj ib qho teeb meem hauv saib HD video, thiab txawm hais tias nws yog ib qho analog interface, txij li lub VGA decomposes cov teeb liab video rau R, G, B thawj xim thiab HV kab Pib ntsais koj teeb rau kev sib kis, kev poob hauv kis tseem tsawg.
Vim li cas rau VGA interface: Cov ntaub ntawv uas tau ua los ntawm graphics card yog kawg tawm rau cov zaub. Cov zis interface ntawm daim card graphics yog tus choj ntawm lub computer thiab cov lus. Nws yog lub luag hauj lwm kom muab cov duab teeb rau cov duab. CRT monitors tsuas txais cov lus teb analog teeb duab rau tsim thiab tsim vim li cas, uas yuav tsum muaj daim npav graphics rau cov khoom lag luam analog. Lub VGA interface yog qhov txuas rau cov lag luam tawm ntawm daim card graphics, thiab VGA (Video Graphics Array) interface, hu ua D-Sub interface. Txawm hais tias lub LCD saib tau ncaj qha tau cov teeb meem digital, ntau cov khoom siv tsawg-tsawg siv lub VGA interface thiaj li yuav phim daim VGA interface daim ntawv.
Kev ua ntawm VGA Interface
Lub luag hauj lwm ntawm cov zaub yog thaum kawg nqa cov ntaub ntawv ua tiav los ntawm graphics card, thiab qhov sib txuas ntawm lawv yuav tsum tau muaj tus choj. Lub qhov zis interface ntawm daim card graphics plays lub luag hauj lwm, thiab nws yog lub luag hauj lwm rau kev muab cov teeb meem coj los siv. Vim yog cov qauv tsim thiab kev tsim khoom, CRT cov zaub tsuas tuaj yeem txais cov lus qhia analog, thiab VGA interface yog qhov txuas rau cov lag luam ntawm daim npav sab nraud pov tseg. Muaj ntau cov khoom qes tshaj kuj siv lub VGA interface thiaj li yuav phim tau daim card.
Tam sim no, feem ntau cov computers thiab lwm cov khoom tso saib yog sib txuas los ntawm analog VGA interface, thiab cov ntaub ntawv digitally generated duab cov duab tau muab hloov mus rau hauv cov teeb meem R, G, thiab B ntawm digital / analog converter nyob hauv daim video. Lub teb sync teeb liab yog xa mus rau cov khoom ntaus ntawv ntawm lub cable. Txawm li cas los xij, thaum siv los mus txuas lub tshuab ntaus ntawv xws li cov kua siv lead ua kua, cov duab poob thaum lub sij hawm hloov txheej txheem ua rau cov zaub nyhuv ua rau me ntsis qis.
Rau analog tso saib, xws li analog CRT qhia, lub teeb liab raug xa mus ncaj nraim rau cov txheej txheem sib txuas, uas tswj cov kav hlau los tsim cov duab. Rau cov khoom tso digital xws li LCD thiab DLP, qhov sib npaug A / D (analog / digital) converter yuav tsum muaj nyob rau hauv lub tshuab ntaus ntawv los hloov cov teeb liab analog rau hauv lub teeb liab. Tom qab qhov kev hloov D / A thiab A / D2, qee cov ntsiab lus duab tau poob lawm. Lub VGA interface yog puas rau CRT cov lus.
Qhov zoo ntawm DVI interface
Xav txog qhov teeb meem sib xws, daim card graphics tam sim no feem ntau siv DVI-I interface, uas tuaj yeem txuas nrog lub VGA zoo tib yam los ntawm kev sib txuas lus nruab nrab. Zaub nrog DVI interface feem ntau siv DVI-D interface, vim hais tias cov zaub kuj feem ntau muaj VGA interface, yog li tsis muaj kev xav rau DVI-I interface nrog analog teeb liab. Qee tus saib tsuas muaj DVI-I interface thiab tsis muaj VGA interface. DVI interface ntawm cov khoom ntaus ntawv muaj qhov zoo hauv qab no:
1. Ceev ceev
DVI xa cov teeb meem ntawm cov digital signals ncaj qha mus rau cov khoom tso tawm tsis muaj kev hloov siab, yog li txo cov txheej txheem digital analog → digital cumbersome, txuag lub sij hawm, yog li nws yog sai Nws raug tshem tawm cov teeb meem tshwm sim, thiab siv DVI rau cov ntaub ntawv xa tawm, lub teeb liab tsis raug, cov xim yog muaj tseeb thiab muaj tseeb dua.
2 Daim duab no meej
Sab hauv kev sib kis ntawm lub computer yog lub teeb liab binary. Yog hais tias lub VGA interface siv los mus txuas lub LCD zaub, lub teeb liab xav tau hloov dua siab tshiab rau hauv R, G, B thawj xim pib thiab cov kab thiab daim teb synchronization los ntawm D / A (digital / analog) converter nyob rau hauv daim card graphics. Pib ntsais koj teeb, uas tau xa mus rau LCD los ntawm analog xov tooj kab, kuj xav kom sib npaug A / D (analog / digital) converter los hloov cov teeb liab analog rau hauv ib lub teeb liab thaum mus tso saib cov duab hauv LCD. Nyob rau saum toj D / A, kev hloov dua siab tshiab thiab teeb liab, kev teeb liab thiab kev cuam tshuam yog kev tsis pom kev, ua rau cov duab distortion lossis teeb pom kev, thiab DVI interface tsis tas yuav ua cov kev hloov no, tias Lub sharpness thiab kev nthuav dav ntawm cov duab tau zoo heev tuaj.
3. Txhawb txheem HDCP raws tu qauv
DVI interface tuaj yeem pab txhawb qhov HDCP tus qauv, tso lub hauv paus rau saib cov yeeb yaj duab zoo nrog cov cai. Txawm li cas los xij, yog tias koj xav tau daim card graphics pab txhawb HDCP, nws tsis muaj peev xwm muaj DVI interface. Koj yuav tsum tau nruab ib lub vias ntiv taw, thiab koj yuav tsum them tus nqi them rau kev lees paub ntawm lub peev txheej ntawm HDCP. Yog li no, tsis muaj ntau cov ntawv teev lus pov thawj uas txhawb qhov HDCP raws tu qauv.
Qhov teeb meem hauv HDCP yog tib yam li DVI los ntawm daim qauv ntawv, tus pin txhais, thiab cov ntaub ntawv. Nws tsuas yog rau txoj kev tsis pub lwm tus paub xwb. Cov ntaub ntawv yog encrypted thiab conforms mus rau HDCP raws tu qauv. Xav tias qhov no tsuas yog sib txawv ntawm kev pom zoo, peb tuaj yeem xav txog ob qhov sib npaug.
DVI interface txheem
DVI interface thiab VGA interface sib txawv, DVI interface muaj ntau cov qauv, koj yuav tsum to taub thaum siv cov zaub. DVI muab faib ua tsib txoj cai. Ntawm lawv, DVI-D thiab DVI-Kuv tau muab faib ua ob hom: "dual channels" thiab "single channel". Feem ntau peb pom cov channel channel nkaus xwb. Tus nqi ntawm cov channel channel yog siab heev, yog li ntawd tsuas qee qhov kev ntaus khoom muaj kev nyuab siab rau cov neeg tau txais kev pom zoo.
DVI-A yog tus qauv kev sib txuas lus analog uas pom tau tias lig dhau qhov loj CRTs. Txawm li cas los, vim tias tsis muaj qhov sib txawv ntawm VGA thiab VGA, qhov kev ua haujlwm tsis siab, yog li DVI-A tau raug tso tseg. Raws li rau DFP interface, qhov no yog ib qho kev qhia ntxov ua ntej uas tau poob lawm. Hais txog ntau yam ntxwv ntawm DVI cov teeb liab.
