Advantages of HDMI | disadvantages of HDMI
This page covers advantages and disadvantages of HDMI. It mentions HDMI advantages or benefits and HDMI disadvantages or drawbacks. It also describes HDMI interface basics.
What is HDMI?
Following are the features of HDMI interface.
• HDMI is the short form of High Definition Multimedia Interface.
• It is interface between smart devices and displays. Smart devices include laptop, smartphone, tablet etc. Displays include PC monitor, TV monitor, projector etc.
• Audio formats: DTS, Dolby etc.
• Video formats: 720p, 1080i, 1080p, 480p etc.
• Supports PAL/NTPC TV standards
• Backward compatible with DVI
There are two types of HDMI cables as follows.
• Category-1 HDMI cable: It supports pixel speed of 75 MHz and bandwidth of 2.23 Gbps. It can carry 1080i uncompressed signal.
• Category-2 HDMI cable: It supports pixel speed of 340 MHz and bandwidth of 10.2 Gbps. It can support 1440p and WQXGA resolutions.
HDMI connector based cables are used to interface with USB-type C and VGA connector based smart devices. To support this, suitable interface cables are designed. Refer HDMI Over USB type C >> and HDMI to VGA converter >> for more information.
Benefits or advantages of HDMI
Following are the benefits or advantages of HDMI:
➨The HDMI interface cable can be used to carry both audio and video signals. Hence separate audio/video cables are no longer needed.
➨It simplifies connectivity between devices with fewer cables rather than multiple cables used earlier.
➨HDMI interface is available in many smart devices such as laptops, tablets and hence they can be connected with large size TV to make it bigger monitor for viewing programs.
➨It offers loss less transmission and better quality video.
➨Texts are displayed with more sharpness on the screen.
➨It offers 2-way communication with automatic configurations. Hence any external intervention to identify best resolution/audio formats can be avoided.
➨It offers authentication and encryption of the data carried by cables.
➨It offers signal integrity and hence it is possible to transmit HD contents without any degradation or alteration.
➨It can deliver deep color depths due to support of various bit formats e.g. 10/12/16 bits.
➨HD signals are transmitted without any compression and hence there is no degradation in the quality of the signal.
Drawbacks or disadvantages of HDMI
Following are the disadvantages of HDMI:
➨HDMI category-1 supports distance of about 35 meters where as HDMI category-2 supports distance of about 10 meters.
➨Sometimes authentication delay can lead to blank screens.
➨They (i.e. HDMI cables) are expensive compare to analog cables.
➨Multiple applications spread across multiple locations are difficult to run simultaneously.
➨In order to use for DVI interfacing, it requires separate audio cable. HDMI-DVI adapter is also needed.