How We Can Choose Display Interface for Video

Posted by

Visible video connectors connect the monitor to the recording device. Concerns about image quality and video protection have led to significant changes in display technology gradually. Although the VGA interface is still in use on PCs, the future goes to digital communication. A variety of methods including an analog connector, hybrid digital plus analog interfaces, and a few digital meeting places have been developed to date. You should use Avple to download, watch, and upload videos However, there are differences in the display features. We are learning several active analogs and digital video connections.

Analog display links

S-video, representing Separate Video, transmits video signals over the cable by splitting it into two distinct signals: one in color and the other in color. As a result of this separation, sharp and high-resolution images can be achieved. S-video does not handle audio, so it usually uses red and white RCA audio cables.

Partial video

This video link is superior to both the composite and the S-video. Because its three cables better retain a variety of video signal features including light and color, resulting in improved image quality. The video segment uses three RCA connections, Red, Blue and Green to send video signals. Contains only visible data, which means audio cables are still needed. Therefore, it is often paired with an RCA stereo audio connection (red and white).

VGA (Video Graphics Array)

VGA or Video Graphics Array is the most popular video connection between computers and monitors. It is used on computer video cards, projectors, and top boxes. The standard VGA connection has 15 pins and supports a display resolution of 640 * 480 pixels, while the improved version of SVGA allowed 1024 * 768 pixels. It is safe to say that high resolution is limited to connector bandwidth and cable quality and length.

In a VGA connector, because of the small pins connected to the small connector, building small coaxial cables is difficult.

Digital display links

Digital Video Interface (DVI) is built in place of VGA (analog interface). However, in some cases, the DVI still supports analog display. In fact, DVI is the only standard that can handle both analog and digital signals on a single interface. If the display is analog, the DVI connection will convert the digital signal into an analog signal, otherwise no conversion will be required. It is safe to say that DVI analogue video bandwidth is higher than VGA, so higher resolution can be supported compared to VGA. Therefore, it can be used for displaying high resolution such as UXGA and HDTV.

DVI cables or holes with a few pins are designed for devices with low resolution. To support high resolution, the DVI hole must contain all pins. Since DVI does not support High-bandwidth Digital Content Protection (HDCP) encryption automatically, using computer systems that include DVI ports only, video protection is not guaranteed. This is a major drawback of DVI. As HDCP protects video from illegal copying, this feature is very important for video surveillance programs.

DVI has several variants: DVI-D (digital only), DVI-A (analog only) and DVI-I integrated with both digital and analog video. DVI connections are popular on computer video cards, monitors and projectors.


High-Definition Multimedia Interface (HDMI) transmits uncompressed digital video and audio data via a single cable, while other communications require separate audio and video cables. For example, a partial cable connection uses three video cables and two audio cables, resulting in a total of five cables. While using HDMI, uncompressed audio and video information can be transmitted using a single cable, thus the cable drain is greatly reduced.

Since HDMI is a digital connection, it is much more prone to noise and noise problems compared to analog connections. As most processes are digital such as DVD players, Blue-ray players and game consoles, so using HDMI for these customers analog to digital conversion will be eliminated. Therefore, it leads to better image quality and sound compared to other communications. And HDMI supports HDCP, which means it works in video surveillance systems. The HDMI connection is the most popular visual connector, available on all TVs, AV receivers, Blue-ray disc players, DVR, laptops, and digital cameras because, with HDMI, there is no need to purchase different audio and video cables. Don’t forget to check out the guide about Avple Therefore, fewer wires and connections are used.


DisplayPort as a standard port for connecting PCs, laptops, and other computers to video monitors has been termed digital communication. It is a high-definition AV connection that transmits audio and video data via a single cable via a lock connector. DisplayPort is a simple yet high-end bandwidth interface that provides real digital images and clear audio. It can also empower.

One of the advantages of DisplayPort is that it works with older technologies, as using simple adapters, it is compatible with VGA, DVI, and even HDMI. DisplayPort enables high display, durability, flexibility, a high level of system integration, and excellent interaction between a variety of devices. DisplayPort was established as the next generation of personal computer display and is now available on a variety of tablets, notebooks, desktop computers and monitors. It is installed on all new Macs and most Dell, HP, and Lenovo computers and is available for video graphics cards. DisplayPort can be used for consumer electronics but is not uncommon.

DisplayPort is connected, which means the connection can be reset without the need to restart the device. DisplayPort also supports DPCP (DisplayPort Content Protection) and HDCP (High bandwidth digital content protection). This both prevents illegal copying, so it is very important for video security.

Also Visit: Mephimmy

Leave a Reply