With the continuous development of the demand of the video industry, VGA interface, DVI interface, HDMI interface, etc. have been widely used in various digital products. The following explains the performance advantages of each interface of VGA/DVI/HDMI for you.
HDMI (High Definition Multimedia Interface) is a high-definition multimedia interface, which is a fully digital image/sound transmission interface that can transmit uncompressed audio signals and video signals. HDMI can transmit audio and video signals at the same time. Since audio and video signals use the same cable, the installation of the system is greatly simplified.
VGA (Video Graphics Array) interface, also called D-Sub interface, is an interface for outputting ana-log signals on graphics cards. Although LCD monitors can directly receive digital signals, many low-end products use VGA interface to match VGA interface graphics cards.
VGA interface is the most widely used interface type on graphics cards, and most graphics cards have this interface. Some graphics cards with DVI (Digital Visual Interface) interfaces without VGA interfaces can also be converted from DVI interfaces to VGA interfaces through a simple adapter. Graphics cards without VGA interfaces usually come with such adapters.
DVI (Digital Visual Interface) interfaces and VGA are the most commonly used interfaces in computers. At present, many graphics cards, professional-grade high-definition digital video capture cards, and high-definition TVs also provide DVI interfaces. Unlike VGA, DVI can transmit digital signals without digital-to-ana-log conversion, so the picture quality is very high. There are many specifications for DVI interfaces, the most common ones are DVI-D (Digital) and DVI-I (Intergrated). DVI-D can only transmit digital signals, and it can be used to connect graphics cards and flat-screen TVs. In addition, DVI-I can convert between DVI-D and VGA.
HDMI can not only meet the current highest resolution of 1080P, but also support the most advanced digital audio formats such as DVD Audio, support eight-channel 96kHz or stereo 192kHz digital audio transmission, and only use one HDMI cable to connect, eliminating the need for digital audio wiring. Compared with DVI, the HDMI interface is smaller in size and can transmit audio and video signals at the same time. The cable length of DVI cannot exceed 8 meters, otherwise it will affect the picture quality, while the cable using the HDMI specification interface has no length limit, and HDMI can transmit up to 15 meters.
