1, Bandwidth thiab kev daws teeb meem txhawb nqa
Thaum DisplayPort 1.2 raug tso tawm, nws coj qhov kev txhim kho bandwidth tseem ceeb, nce mus txog 21.6 Gbps, uas ua rau nws txhawb nqa cov nqi tshiab txog 60Hz ntawm 4K daws teeb meem (3840 x 2160 pixels). Nrog DisplayPort 1.4, bandwidth ntxiv mus rau 32.4 Gbps, tso cai rau nws los txhawb 60Hz refresh npaum li cas ntawm 8K daws teeb meem (7680 x 4320 pixels) lossis 120Hz refresh tus nqi ntawm 4K daws teeb meem.
2, Cov ntaub ntawv kis tus nqi
Ntxiv nrog rau qhov sib txawv ntawm bandwidth, cov ntaub ntawv xa tawm tus nqi kuj yog ib qho tseem ceeb sib txawv ntawm ob. Cov ntaub ntawv siab tshaj plaws ntawm DisplayPort 1.2 yog 25.92 Gbps, thaum nyob hauv DisplayPort 1.4, tus nqi no tau nce mus rau 32.4 Gbps. Qhov no txhais tau tias ntau dua cov ntaub ntawv kis tau tus mob thiab muaj peev xwm ua tau zoo dua video thiab suab tso zis.
3, Suab muaj peev xwm
Hais txog lub suab, DisplayPort 1.2 txhawb nqa lub suab piv txwv siab tshaj plaws ntawm 192 kHz thiab mus txog 8 raws. Hauv qhov sib piv, DisplayPort 1.4 tsis tsuas yog tswj hwm cov suab no xwb, tab sis kuj ntxiv kev txhawb nqa rau ntau lub suab channel, theoretically mus txog 32 raws.
4, Display Stream Compression (DSC)
Lwm qhov sib txawv tseem ceeb nyob hauv kev txhawb nqa rau Display Stream Compression (DSC). Display Port 1.2 tau tshaj DSC 1.1, thaum Display Port 1.4 tau hloov kho kom haum rau DSC 1.2. Qhov no lossless compression tshuab tso cai rau kev daws teeb meem ntau dua, refresh npaum li cas, thiab xim qhov tob kom kis tau los ntawm ib lub cable, zoo heev txhim kho qhov yooj thiab kev ua tau zoo ntawm cov khoom siv sib txuas.
5, Lwm cov haujlwm
1. High Dynamic Range (HDR): Txawm hais tias DisplayPort 1.2 kuj txhawb HDR, DisplayPort 1.4 muaj kev txhawb zog ntau dua hauv cheeb tsam no, tshwj xeeb tshaj yog nyob rau hauv cov xim qhov tob thiab dav xim gamut kev ua tau zoo.
2. Multi kwj kis tau tus mob (MST): Cov cuab yeej no tso cai rau cov neeg siv los txuas ntau cov lus qhia ib txhij los ntawm ib qho DisplayPort interface, thiab txhua cov zaub tuaj yeem ua haujlwm ntawm nws tus kheej. Cov yam ntxwv no tau khaws cia rau hauv ob qho tib si, tab sis nws qhov kev ua tau zoo hauv kev siv tswv yim yuav txawv vim qhov sib txawv ntawm bandwidth.
3. Backward compatibility: Txawm hais tias DisplayPort 1.4 muaj ntau yam nta thiab kev ua tau zoo dua, nws tseem rov qab sib xws nrog DisplayPort 1.2 thiab lwm yam dhau los. Qhov no txhais tau hais tias yog tias koj lub cuab yeej uas twb muaj lawm tsuas yog txhawb nqa DisplayPort 1.2, cov cuab yeej siv DisplayPort 1.4 tuaj yeem ua haujlwm tau zoo, tab sis tsis tuaj yeem ua kom zoo dua txhua yam tshiab ntawm version 1.4.
