hdmi（high definition **interfaceHigh-definition multi-** interfaceThe specification was proposed in 2002 by six consumer electronics giants (Hitachi, Panasonic, Philips, Silicon Image, Sony, and Toshiba).
The DisplayPort specification is defined by the VESA (video electronics standards associationElectronic Standards InstituteDeveloped. VESA is a large alliance of manufacturers ranging from AMD to Zips Corporation, almost all of whom are members of the HDMI Forum.
DisplayPort debuted in 2006 to replace the Video Graphics Array (VGA) and DVI (Digital Video Interface), which are primarily used for computer monitors.
hdmiwithdisplayportfeatures
HDMI recently revised 21a version, capable of supporting up to48gbpsAdded improved support for high dynamic range displays. DisplayPort 21, more on 20 specification of perfection, speed up to80gbps
As you can see from the images above and below, both HDMI and DisplayPort have significantly expanded their bandwidth over the years.
DisplayPort's bandwidth has increased dramatically over the years. 2.Version 1 remained 20 maximum bandwidth, but the specification is more stringent and some new features have been added.
HDMI and DisplayPort are similar in terms of practical applications, and they are generally considered complementary standards in the industry.
NoteBoth standards are backwards compatible, and both can be compatible with older display interfaces, such as HDMI to VGA and DVI, through adapters; Or DisplayPort to VGA, DVI, and HDMI.
usehdmiwithdisplayportConnectionsMultiple displays
The biggest practical difference between the two standards is probably:displayportFour cascaded displays can be driven, whilehdmiOnly two can be driven
The 48Gbps and 80Gbps mentioned above are HDMI 21A and DisplayPort's raw transfer speeds. displayport 2.1 has four channels and can transmit about 7737Gbps (19 per lane.)34Gbps) and DisplayPort 14a can transmit 324Gbps (6 per lane.)48gbps）。hdmi 2.0 The transfer speed is 144Gbps vs. HDMI 21 is 426gbps。
To determine the supported resolution, you can use the following formula:
Horizontal resolutionVertical resolutionBits per pixel (i.e., color depth).Frames per second
For example: 3840 * 2160 (4K UHD resolution) * 24bpp (8-bit color depth) * 60fps (refresh rate).
Divide the standard total data rate by your results to see how many DisplayPort displays can be used at that resolution.
hdmiwithdisplayportonofhdrYes
Both standards support HDR (High Dynamic Range) with a wider range of brightness and colors, but HDMI 20X only supports static metadata (HDR10), while HDMI 21 and displayport 14a/2.1. Both support dynamic metadata (HDR10+, etc.).
Static metadataThis means that content adjustment data is sent only once at the beginning of **.
Dynamic metadataMeans that the tuning data is sent throughout ** and allows for finer tuning.
hdmiwithdisplayporton audio transmission
Both HDMI and DisplayPort support 192Hz 24-bit audio, but HDMI only works with a single cable connection. It is acceptable for high-resolution audio enthusiasts who have a high-resolution audio** and a AV receiver. However, to stream audio from a TV tuner or from a device connected to a TV to a V receiver, HDMI 14 and 20 uses arc (audio return channel), which is limited to 44Two channels of 1Hz 16-bit lossless audio.
ARC supports highly compressed 51 surround sound, uncompressed 51 and 71 audio, as well as a sample rate of up to 192kHz 24-bit, can now be accessed via HDMI 21 of the EARC (Enhanced ARC) standard implementation.
displayport 1.4 and above versions, which can transmit lossless Hz 24-bit audio to up to four displays. Earlier versions only supported audio transmission on a single display or receiver.
hdmiConnectors
HDMI connectors have 19 pins, the most common of which come in three sizes:type a(Standard),type c(mini) andtype d(Micro).。Type A is commonly used on TVs and other large AT-V devices; Type C is usually used on smaller devices such as dash cams; Type D, on the other hand, is commonly used on mobile phones and tablets.
The three types of HDMI connectors are (from left to right).Standard, mini and miniaturetype
displayportConnectors
The DisplayPort connector has 20 pins and is available in two sizes:displayportwithmini displayport(The latter was the interface of choice for Microsoft's Surface Pro tablets, as well as Apple's Macs prior to USB Type-C Thunderbolt 3). Intel's Thunderbolt connector uses a mini DisplayPort connector for PCIe communication and can also be used as a DisplayPort port.
hdmilinecables
(Standard),hdmilinecables: Provides only sufficient bandwidth for 720p and 1080i resolutions**.
High speedhdmiCables: It can support 2160P (4K or 4K UHD), but the refresh rate is only 24Hz.
Ultra-high speedhdmiCables: Capable of carrying HDMI 21A at full speed of 48Gbps for 8K, 8K UHD, and 10K versions of compressed**.
displayportlinecables
(Standard),displayportlinecables: Suitable for HBR (high bit rate) 1080Gbps and HBR2 (High Bit Rate 2)2160gbps。
dp8klinecables: For HBR3 (high bit rate 3) 3240gbps（displayport 1.3) and UHBR 10 (ultra-high bit rate 10) 40Gbps (DisplayPort 2.)0）。
As for the cable length, try to use the shortest possible wire. For very long transmission distances, an active cable is required.
It should be chosendisplayportStillhdmi
Technically, DisplayPort may sound as if it's more powerful than HDMI, but in general real-world applications,IfYouConsider televisions, audio receivers, etcOrdinary computerscasehdmiEnough is enough
IfYouuseofYesDiscrete graphics cardHigh resolutionwithHigh refresh ratedisplay, that's to choosedisplayport