Xov Xwm Kev Lag Luam

Qhov sib txawv ntawm HDMI thiab DisplayPort

2021-04-06

TusHDMICmuaj peev xwmthiabCov zaub Cmuaj peev xwmkhiav ntawm tib lub qauv yooj yim thiab kev sib txawv coaxial twisted khub, thiab ob qho tib si siv cov kev kub ceev thiab hluav taws xob qis hluav taws xob kom xa cov ntaub ntawv, tab sis qhov ntawd tsuas yog qhov sib thooj ntawm ob.

 

Txawm hais tias ob tus qauv zoo sib xws nyob hauv qhov tsos, muaj qhov sib txawv loj hauv cov qauv. Cov kev sib txawv no txiav txim siab qhov ua tau zoo ntawm cov txuas thiab nws tus nqi, kev sib raug zoo, kev ua kom ruaj khov, thiab ua kom yooj yim ntawm kev tua

 

TusHDMIcmuaj peev xwms standard now defines four connectors, A to D. Except for Type B, the rest are 19 pins. Type C and D are aimed at portmuaj peev xwm applications and small-volume devices. Tuscmuaj peev xwms used by the two standards are slightly different.

 

HDMIcmuaj peev xwms 1.0 to 1.3 use 4 shielded coaxial differential pairs, 4 single-ended control signals, power (+5V) and ground wires. HDMIcmuaj peev xwms1.4 ntxiv audio audio channel thiab Ethernet channel, yog li lub teeb liab qauv sib txawv. HDMI1.4 siv 4 khub coaxial, 1 khub tsis sib xws, 3 lub qhov taw qhia ib leeg, lub zog txuas (+ 5V) thiab hauv av.

This means that HDMIdata cmuaj peev xwm 1.4 and HDMIdata cmuaj peev xwm 1.3 use different cmuaj peev xwms. If a non-HDMI1.4 cmuaj peev xwm is used in the HDMI1.4 system, the audio return and Ethernet functions will be lost. However, all the features of HDMI1.3 and other new features of HDMI1.4 (such as 3D) can be retained.

Cov zaub defines two types of connectors, Full Size and Mini. Both connectors have 20 pins, but the width of the mini connector is about half of the full size, and their dimensions are 7.5mm x 4.5mm and 16mm x 4.8mm, respectively. To establish a complete link requires 5 coaxial pairs, 3 single-ended signals, and power and ground wires.

 

Mini DP interface

 

Tusscalability of Cov zaub Cmuaj peev xwm itself allows a low-bandwidth Cov zaub link to be established with fewer wires, but few people do this because it may cause confusing compatibility issues for end users.

Tusabove is the difference between the HDMIhigh-definition cmuaj peev xwm signal and the Cov zaub cmuaj peev xwm signal introduced by the technical staff of Edson. Although the HDMIdata cmuaj peev xwm and Cov zaub seem to have the same function, they are also high-speed digital serial links, but in terms of structure, they It's completely different.