4K in our days is a widespread resolution and you can connect TV with such resolution using HDMI port. However, there are a lot of different port names, like HDMI (4K@60Hz) DVI IN (HDCP 2.2, ARC, 10Bit, MHL). Of course, you don’t need to understand them all to use these ports, but understanding them is the best way if you want to use them wisely.
What are HDMI ports mean (4K 60Hz)
For example, in LG TVs HDMI is named HDMI (4K@60Hz) DVI IN (HDCP 2.2, ARC, 10Bit, MHL). And there are some other names for earlier ports that can be known like HDMI (ARC, STB, DVI, MHL). In this article, I try to tell about their differences.
DVI 4k 60hz
HDMI 4k@60Hz/DVI IN, (shown in the picture above) and means that this TV supports HDMI standard 2.0. These ports support 4k Video (3840 x 2160 pixels) and 60Hz frame rate, they also support 3D image and these ports are supported by DVI ports.
HDMI (HDCP 2.2) 4K 60Hz
HDMI (HDCP 2.2) This is a copy protection port (data version 2.2)
At first, HDMI HDCP was developed as a protected data pport to connect devices to transmit high-resolution video. And then was developed protocol 2.2 to provide better protection. And this version of protocol isn’t supported by earlier versions of HDMI HDCP.
A picture which shows a cheme of how HDCP work.
If one of the devices doesn’t support HDCP 2.2, the scheme would look like this:
HDMI (ARC) reverse audio channel 4K 60Hz
This standard allows you to use only one type of port, so you can connect speakers to transmit audio, without additional ports. The scheme of how HDMI (ARC) works is presented below.
HDMI 10Bit 4K 60Hz
HDMI 10Bit supports transmitting of the pictures with color depth of 10 or 12 bit.
As you may know, TVs have only 3 colors and 1024 shades (in 10-bit color depth panels). However, all other shades and colors are created by combining 1024 original shades. There are more than 1 billion different colors (just multiply 1024x1024x1024).
HDMI MHL 4K 60Hz
HDMI MHL (Mobile High-Definition Link). In this way, the port support USB Data (USB→HDMI). For example, you can share your photos, videos, or music from your phone (USB) to your TV (HDMI)
MHL is only one type of HDMI ports that support USB Data.