What does HDMI STB, HDMI DVI, HDMI MHL, HDMI ARC mean?
When we tell about a features of connectors in TV, declared 4 HDMI connectors. A more detailed study is that the connectors HDMI, e.g. Samsung has also addition marking of HDMI connectors: STB, DVI, ARC, MHL, what is it? And why use such a designation.
As a rule, all connectors on the TV are absolutely the same functionality and division into types (STB, MHL, ARC, DVI) is purely conventional (except MHL) and is intended to facilitate the selection of the user where that include, for example, a video player. In order that would have connectors designed for different purposes, such as one connector should be standard 1.3, in time when other is 1.4, only in this case they will have different functionality. However, some companies use diferrent types of HDMI.
MHL-this is an additional protocol video from mobile devices to the TV, and even if does not support the HDMI MHL video may be transmitted by the active adapter.
HDMI is dependent on the type of controller for signal processing (version HDMI).
HDMI connector is use for the transmission of multimedia, and easier to say digital video and audio signals from one device to another.
Types of HDMI Ports
HDMI STB port explained
What is HDMI STB? This HDMI input and having the designation HDMI in1 (STB) is designed to connect consoles, like as xBOX or PlayStation or receiver. But this port is also possible to connect any device. HDMI STB is just a label that helps the user to determine the port to which the receiver, player, and game console can be connected.
This STB name comes from the time when various consoles and other devices were used with TVs. They looked like a box that was usually laid on top of a kinescope TV. And so the name set top box abbreviated STB.
HDMI DVI port explained
What is HDMI DVI? This type of HDMI is HDMI in 2 (DVI) and use to connect to the TV computer or using TV as a display . The feauture of this connection is that the sound that DVI is unable to be transmissed. In the HDMI standard 1.4 and newer versions audio transmission is possible. The HDMI port supports audio, but does not support DVI on the computer. HDMI DVI ordinary port, the inscription only as an aid, you can connect any device to this port. And not just a computer.
HDMI ARC port explained
What is HDMI ARC? HDMI port with HDMI in3 reverse audio channel (ARC). This is a standard HDMI port of one of the standards. A feature of HDMI (ARC) is the ability to transmit sound from a TV via an HDMI cable.
The return channel will allow you to receive a signal from the air and output sound via HDMI to the connected speakers, but in uncompressed format only stereo. 5.1 sound format is transmitted only in compressed format. In modern HDMI 2.1 standards, the quality of sound transmission is improved, the ability to transmit 5.1 standard sound and even 7.1 not in compressed format is implemented.
Note that although the HDMI standard also stipulates support for the return audio channel, manufacturers sometimes save and with ARC they only make one port on the TV.
|Cable Used||HDMI||HDMI with Ethernet|
|High Bitrate & object based up to 192 kHz, 24 bit (Dolby Atmos, DTS)||No||Yes|
|Maximum Audio Bandwidth||1 Mbit/s||37Mbit/s|
|Discovery||CEC||eARC data channel|
|eARC Capability||CEC||eARC data channel|
|Lip Sync Correction||Optional||Mandatory|
|TV Mutes &Controls Volume||Yes||Yes|
|Powering TV Powers Adio Device||Yes||Yes|
In the new standard HDMI 2.1, a new designation of the reverse audio channel EARC has appeared. In EARC, the capacity of the HDMI port is increased and back it became possible to transfer not only 7.1 sound but also Dolby and DTS sound.
HDMI MHL Port explained
What is HDMI MHL? The port of HDMI in4 (MHL) mobile high-definition link, is used to connect to a TV and smartphone display on a television pictures or video directly from your smartphone. This connection has been implemented to the TV’s HDMI interface and USB smartphone. Function is supported by the TV, and connect your smartphone MHL, in this case for video transmission needs a passive cable and it is possible to control your smartphone using from the TV. If for example the HDMI TV does not support MHL a smart phone can also be connected but it is necessary to use an active adapter with external power supply, in this case, you can watch the video, but you can not control the tv smartphone.
MHL connection allows you to connect your phone to your TV without any additional software
Table features different versions of HDMI
|Full HD Blu-ray Disc and HD DVD video||Yes||Yes||Yes||Yes||Yes||Yes||Yes|
|Consumer Electronic Control (CEC)||Yes||Yes||Yes||Yes||Yes||Yes||Yes|
|Super Audio CD (DSD)||No||No||Yes||Yes||Yes||Yes||Yes|
|Dolby TrueHD / DTS-HD Master Audio bitstream capable||No||No||No||Yes||Yes||Yes||Yes|
|Updated list of CEC commands||No||No||No||Yes||Yes||Yes||Yes|
|Ethernet channel (100 Mbit/s)||No||No||No||No||Yes||Yes||Yes|
|Audio return channel (ARC)||No||No||No||No||Yes||Yes||Yes|
|4 audio streams||No||No||No||No||No||Yes||Yes|
|2 video streams (Dual View)||No||No||No||No||No||Yes||Yes|
|Perceptual Quantizer (PQ) HDR OETF (SMPTE ST 2084)||No||No||No||No||No||Yes||Yes|
|Hybrid Log-Gamma (HLG) HDR OETF||No||No||No||No||No||Yes||Yes|
|Static HDR metadata (SMPTE ST 2086)||No||No||No||No||No||Yes||Yes|
|Dynamic HDR metadata (SMPTE ST 2094)||No||No||No||No||No||No||Yes|
|Enhanced audio return channel (eARC)||No||No||No||No||No||No||Yes|
|Variable Refresh Rate (VRR)||No||No||No||No||No||No||Yes|
|Quick Media Switching (QMS)||No||No||No||No||No||No||Yes|
|Quick Frame Transport (QFT)||No||No||No||No||No||No||Yes|
|Auto Low Latency Mode (ALLM)||No||No||No||No||No||No||Yes|
|Display Stream Compression (DSC)||No||No||No||No||No||No||Yes|