What is DVI port? Classification of popular DVI ports today

The DVI port is considered a popular connection port, but many people still cannot distinguish this type of port from HDMI, DVI or VGA. So, let's learn with TipsMake what the concept of a DVI port is and analyze more closely the characteristics and data transmission method of this connection port!

What is DVI port?

DVI (Digital Visual Interface) is a port that supports connecting electronic devices together to transmit all types of data from images, video to audio. Through the DVI connection port, users will not need to convert data to the default analog signal form as before.

The DVI port was produced in 1999, is present on all AV devices and is most commonly found in projectors.

What is a DVI cable? Length of DVI cable

In 1999, DVI cable was officially introduced to the public by technology experts. This type of cable is used to communicate as well as easily transfer data and video between devices.

DVI cable allows users to transfer data from sources to laptops, camera recorders, memory cards to the presentation screen of a TV, computer or projector.

The length of each type of DVI cable varies. You can find DVI cables from 3,5,10 or 15, 20m long. Based on different needs, you can easily choose the right item for yourself.

What are the outstanding features of the DVI port? 

DVI port has main characteristics such as:

1. There is support for connecting to two prominent signal types : Analog and digital.
2. Image and video resolution transmitted through the DVI port reaches a resolution of 1920 x 1200.
3. Users can completely increase transmission speed and reset image resolution when using  dual-link.
4. The DVI port is completely suitable for many different users.
5. DVI also easily allows users to connect or broadcast monitor signals quickly.
6. The price of the DVI port is extremely affordable.

Classification of common DVI ports

In the current market, DVI ports are divided into 3 popular types:

1. DVI – A (DVI – Analog)

DVI – A is known to be the first in the category of prominent DVI ports on the market. As for this port, users can use it to transmit data to devices in the form of Analog signals.

The DVI - A port also supports many devices designed in conjunction with the VGA port. Because, VGA and DVI have similar features. The minus point of the DVI - A port is that the signal can be lost during the conversion process. This causes users' needs to be directly affected.

2. DVI – D (DVI – Digital)

In case you want to transmit digital video signals, the DVI - D port is exactly the best option. Because they will help you do it simply. You can connect the DVI - D cable directly from this device to the projector screen, laptop, or TV.

Besides, the gate does not perform the same conversion phase. All data transmitted through this port is output as a digital signal. They will then be converted into analog signals and passed through the VGA port to the display.

Thanks to the DVI - D port, images are transmitted from phones and computers to projector screens and laptops faster, more realistically and sharper.

3. DVI – I (integrated Digital and Analog)

DVI – I port is exactly the product of the simultaneous combination of Analog and Digital. They help users easily communicate digital and analog signals quickly. Using this port, you can convert data under any situation.

Both port types DVI – A and DVI – D can usually be transferred directly to each other. This makes it difficult for you to have to perform the additional operation of converting VGA to DVI - D or DVI - A. After that, you must make adjustments to be able to connect the Analog signal to the digital screen.

Data transmission types of DVI port

According to technology experts' sharing, you can transfer data through the DVI port in 2 ways, specifically:

1. Single Link

The first way to transfer data through the DVI port is Single Link . Single Link is considered one of two advanced data types of DVI port. True to their name, they are often equipped with a transmission line. Data transmitted in this manner requires the use of a 165 mHz TMDS transmitter . The quality of images and videos transmitted through this port usually reaches HD resolution of 1920 x 1200.

2. Dual Link

Dual Link is an upgraded data type of the DVI port. They have 2 transmission lines and are likened to stereo sound. Data transmitted from Dual Link to the DVI port often gives users the best experience. High quality image, resolution reaches 2560 x 1600.

Data is used simultaneously on two TMDS 165 mHz transmitters , resulting in extremely fast transmission speeds.

Differences between DVI and HDMI, VGA, DisplayPort

DVI port has many differences compared to HDMI, VGA, DisplayPort. To help you better understand the differences between these 4 types of connection ports, we will analyze based on 6 main factors below.

Comparison criteria	DVI	HDMI	VGA	DisplayPort
Identification characteristics	24 signal pins	19 signal pins	Includes 15 pins and distributed evenly in 3 rows	20 signal pins
Popularity	Commonly used by companies specializing in manufacturing graphics cards and LCD screens	Prominently used in electronic devices such as laptops and phones	The usage level of the VGA port is also very famous. Brands that use many of these ports are Nvidia and AMD	Loved and used by many users. People often choose to upgrade from 1.4a DSC 1.2 to 1.2a DSC.
Image and video resolution	– 1920 x 1200 HD video for DVI standard. – Dual DVI standard has a resolution of 2560 x 1600 pixels.	– 4K 50/60 (frames/s) or 100/120 – 5K 50/60 or 100/120, – 8K 50/60 or 100/120 – 10K 50/60 or 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 ratio).	– For version 1.2: 3840 x 2160 pixels (4K) with all popular 3D video formats. – For version 1.3: 8192 x 4320 pixels (8K) or 2 4K screens, 4 Full HD screens, etc. Double the bandwidth to 32.4 Gbps.
Transmission source	Usually transmitted from computer sources to other display devices.	Most are equipped on laptops, phones, TVs and cameras.	The port is widely used for display devices and connecting computers with projectors and televisions.	Commonly found on PCs, Macbooks, phones along with projectors.
Price	Quite cheap, suitable for many different types of users	Cheap price and diverse in designs	Price is higher than other categories. However, they have a variety of segments so users can consider buying.	Selling price is average. Anyone can easily buy and use this portal.
Defect	– The port does not support HDCP encryption standard by default. – Cannot display Full HD Bluray with other HD standards	– Selling price is higher than other categories. – There is almost no plug lock so it can easily become loose and the transmission line can easily be interrupted.	– The computer easily crashes because its RAM is easily full. – Cannot be used for heavy programs and software. – Image and video resolution is not really impressive. – Only pure images can be transmitted quickly.	– The length of the gate has certain limitations. – Almost no support for ARC and Ethernet features. – If you are not careful, you will easily buy poor quality gates

What devices use the DVI port?

DVI ports are often used on devices such as:

1. LCD screens of TVs and projectors.
2. Laptops, smartphones.
3. HDTV, EDTV.
4. Plasma screen.

In addition, they are also used on DVD players.

Frequently asked questions about DVI port?

Besides the concept of DVI port, many people are also interested in which is better between DVI and HDMI? Is the connection between these two ports good? TipsMake answers these questions in detail as follows:

Is DVI port better than HDMI?

– DVI and HDMI have always been considered competitors. The DVI port has a great advantage in delivering full HD resolution. Some types of DVI cables also allow users to convert data at fast speeds. The only minus point of the port
- DVI is that it does not support HDCP encryption by default.
The biggest advantage of HDMI is that it supports many different resolutions. The cable has a compact, lightweight design that is extremely easy to use. Furthermore, during use, users almost do not need to consider the connections. You just need to plug the cord into the slot and use.
– At the present time, DVI port still dominates the market. Low cost and versatile, many customers choose to use this port. However, based on experts, if you are proactive, you should choose to use HDMI. If you use a computer monitor or TV that has a built-in DVI port, you should use a DVI cable to transmit data.

Is it possible to connect DVI to HDMI?

You can completely connect DVI to HDMI on an LCD screen with a small signal converter. It is called a DVI to HDMI converter.

Epilogue

Based on the detailed updated information in the article, you already understand what the DVI port is, right? Hope this article provides you with useful knowledge. If you have any concerns about this topic, please leave a comment below.