DVI port types and the difference between DVI and HDMI, VGA, DisplayPort

In the era of modern technology, electronic devices also develop to meet the needs of users. In particular, the DVI port supports you to connect to other devices quickly. So what is a DVI port? What is the difference between DVI with HDMI, VGA, DisplayPort? Let’s find out more details with Tnhelearning.edu.vn in the following article!

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What is a DVI port? Features of DVI port

DVI port is a port that supports connection to electronic devices such as televisions, computers, laptops, etc. to help transmit image data, play video directly to the screen, by connecting only without having to switch back to the default analog signal as before.

DVI ports appear common on AV devices, especially projectors. The portal is also known in English as Digital Visual Interface , produced in 1999.

Features of DVI port:

• Supports connection to 2 types of signals, digital and analog.
• Stream video images in high HD resolution up to 1920×1200.
• Transfer rate and HD resolution can be increased to 2560×1600, when you use dual-link .
• Suitable for many objects and increasingly popular use because of its reasonable price.
• Connecting and transmitting signals to the display is easy.

What is a DVI cable? Length of DVI cable

DVI cable was introduced to the public in 1999 , researched and developed by the DDWG digital display working group , used to communicate and transmit digital image and video data between terminals.

At the same time, this is also a cable that transmits image data from image sources such as laptops, camera recorders, and video cards used for computers with DVI ports to display screens such as televisions. , computer monitor or projector.

Each type of DVI cable has a variety of sizes, allowing users to freely choose such as 3m, 5m, 10m, 15m, 20m , .. Depending on the needs of use, you have the choice of the length of the wire accordingly.

Common types of DVI ports today

DVI – A (DVI – Analog) port

DVI – A port is one of the most popular DVI ports today, also known as DVI – Analog . Users can use this cable to transmit data as an analog signal (Analog).

In addition, this type of port is also commonly used for devices that support VGA ports because DVI – A and VGA have similar characteristics. However, DVI – A may cause signal loss during conversion, affecting user demand.

DVI – D (DVI-Digital) port

If you want to output a digital video signal, then the DVI – D port will make this simple for you. You can use a DVI – D cable to connect the data source and the display directly.

The port eliminates the phase of analog signal conversion, all of which is output to a digital signal and then converted to analog output via VGA. Moving on, the analog signal moves through the screen and is converted back into a digital signal.

As a result, the DVI – D port offers true, good picture quality and quick response time.

DVI – I Port (Integrated Analogue and Digital)

DVI – I port is a convenient integration between Analog and Digital, allowing users to transmit both digital and analog video signals. Therefore, users can flexibly switch for users in all possible situations.

DVI – D and DVI – A cannot communicate directly with each other, so you have to switch from VGA to DVI – D or DVI – A and vice versa to help connect the analog signal to the digital display.

Types of data transmission of the DVI port

Single Link

Single Link is one of two data types of the DVI port, equipped with a line (similar to mono audio). This data uses a 165MHz TMDS transmitter and can give the user 1920×1200 HD resolution quality images.

Dual Link

Dual Link is a more advanced data type of DVI port with two lines, similar to stereo. Data gives users a better experience, good picture quality, high HD resolution up to 2560×1600 .

At the same time, the data usage uses 2 165MHz TMDS transmitters, making the transmission speed fast.

What devices does the DVI port use?

The DVI port is equipped and used on a variety of devices such as:

• LCD screen.
• Desktop computers, laptops.
• HDTV (High Definition TV).
• EDTV (Enhanced Definition TV).
• Plasma screen.
• In addition, there are a number of other devices such as televisions, DVD players, …

Difference between DVI port with HDMI, VGA, DisplayPort

To help users have a detailed assessment, choose the right product between DVI ports with HDMI, VGA, DisplayPort, please refer to the comparison table below.

Criteria	DVI	HDMI	VGA	DisplayPort
Recognizing signs	There are 24 signal pins.	19 signal pins.	15 pins, arranged in 3 rows, each row 5 pins.	20 signal pins.
Popularity	More commonly used by graphic card and LCD manufacturers.	Commonly used in electronic devices, notably the widely used HDMI 2.0 port.	The popularity of this type of port is not inferior to DVI, HDMI and DisplayPort. Well-known brands are Nvidia and AMD.	Widely used by users, including 1.4a, who upgraded the DSC 1.2 feature to DSC 1.2a.
Resolution	1920×1200 HD video. 2560×1600 pixels for dual DVI.	4K 50/60 (fps) or 100/120. 5K 50/60 or 100/120. 8K 50/60 and 100/120. 10K 50/60 and 100/120.	640 x 480 pixels with an aspect ratio of 4:3 + WVGA. 768 x 480 pixels. 720 x 480 pixels (ratio 3:2). 800 x 480 pixels (5:3 aspect ratio).	3840 x 2160 pixels (4K) and all popular 3D video formats. (with version 1.2). 8192 x 4320 pixels (8K) or 2 4K displays, 4 Full HD displays,… Double bandwidth to 32.4 Gbps (version 1.3)
Transmission source	Stream video from a source (such as a computer) to a display device (such as a monitor, television, or projector).	Equipped with most modern electronic devices such as laptops, televisions, phones, cameras,…	Used for display devices and connecting computers to monitors, projectors, televisions.	Commonly used in PC, Macbook, phone, TV and projector.
Price	Cheap, suitable for many users.	Cheap, diverse designs for you to choose.	Quite high, but divided by type, suitable for many different objects.	Quite cheap, divided into 10 different products for you to choose freely.
Defect	HDCP encryption standard is not supported by default. If the video card only has a DVI drive, it will not be able to display full HD Blu-ray and some other HD standards.	The cost is higher than the VGA port. There is no plug, so after a long time of use, it is easy to loose, making the transmission line unstable.	Computer crashes due to occupied RAM. – Cannot be used to run heavy software, software that requires high graphics processing. Image quality and resolution are not high. Only transmit pure images.	Limited length, maximum only about 3m . Does not support Ethernet and ARC feature. Easy to buy fake, poor quality.

Hope the above article will help you understand more about what is a DVI port? DVI port types and the difference between DVI and HDMI, VGA, DisplayPort. Any questions please leave a comment below!