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VGA Interface is the most common, is relatively common interface. The English name is VGA Video Graphic Array, the display graphics array. HDMI to VGA converter support 640X480 resolution also shows the higher of 16 or 256 colors gray, while the 320X240 resolution can display 256 colors. Rapidly due to good performance VGA became popular, manufacturers have expanded on the basis of the VGA, such as the memory and to support increased to 1M as 800X600 or higher resolution 1024X768, the expansion of the model he called the VESA (Video Electronics Standards Association, the Video Electronics Standards Association) Super VGA mode, referred to as SVGA, now support SVGA graphics card and monitor mode.

VGA graphics interface is the interface on the output analog signals, also known as D-Sub interface.VGA Converter interface is a D-type interface, above the 15-pin space, divided into three rows of five. VGA graphics interface is the most widely used on the interface type, the vast majority of graphics cards with this interface.

Analog VGA interface and the computer by connecting the monitor works, is digitally inside the computer generated display image information, the graphics in the digital / analog converter into R, G, B primary color signals and horizontal and vertical sync signals , the signal transmitted by cable to the display device. For an analog display device, such as analog CRT monitors, signals are sent directly to the appropriate processing circuit, driver control tube to generate images. As for LCD, DLP and other digital display devices, display devices need to configure the A / D (analog / digital) converter, the analog signal into a digital signal. After D / A conversion and A/D2 times, inevitably caused some loss of image detail. VGA Interface used in CRT displays is nothing wrong, but for connection to display devices like LCD, the loss of the conversion process will display the image slightly. CRT monitor because the design and manufacture of reasons, can only receive analog signal input, which is why we only see the VGA CRT monitor interface reasons.

VGA is a video interface standard, which is the analog signal bandwidth of the bandwidth. It supports from 640 up to 2560 * 480 * 1600 has been a variety of resolutions.

HD is a high-definition resolution, typically used in TV areas, including: 1280 * 720i, 1280 * 720p, 1920 * 1080i, 1920 * 1080p formats.

HDMI, High Definition Multimedia Interface is an all-digital video and audio transmission interface, you can send uncompressed audio signals and video signals. HDMI can be used for set-top boxes, DVD players, personal computers, video games, integrated amplifier, digital audio and TV. HDMI can transmit audio and video signals, audio and video signals using the same cable, greatly simplifying system installation.

HDMI, English name is High Definition Multimedia Interface, the Chinese name is short for High Definition Multimedia Interface. April 2002, Hitachi, Panasonic, Philips, Sony, Thomson, Toshiba and Silicon Image HDMI seven companies coalition of organizations. In China, Zhaolong, Akihabara, the North is the HDMI standard chess and science and technology and respected leader in the technology. HDMI can transmit high-quality to high-definition video and uncompressed multi-channel audio data, the maximum data transmission speed of 5Gbps. At the same time without the need to send the signal before the D / A or A / D conversion, can guarantee the highest quality audio and video signal transmission.

Not only to meet the highest quality HDMI 1080P resolution, but also support DVD Audio as the most advanced digital audio formats, support for stereo eight-channel 96kHz or 192kHz digital audio transmission, and only one HDMI cable, eliminating the digital audio connection .HDMI to VGA Converter Box standard also have the extra space for future upgrades can be applied to audio and video formats. Sufficient to cope with a 1080p video and an 8-channel audio signals. And because of a 1080p video and an 8-channel audio signal needs less than 4Gbps, so HDMI there is a great margin. This allows it to be connected with a cable DVD player, receiver and PRR. HDMI also supports EDID, DDC2B, so it has HDMI device has a "plug and play" feature, the signal source and display devices will automatically be "consultation" to automatically select the most appropriate video / audio formats.