Development, concepts and applications of HDMI HD cable

The HDMI cable was first developed in 2002. After the development of the past decade, the HDMI cable has developed into a channel that can transmit audio and video. The HDMI interface standard has formed a universal connection line standard. The high-definition multimedia interface represented by the HDMI interface supports the connection between Blu-ray players or cable set-top boxes and devices such as flat-screen HDTVs or projectors. HDMI cables are also used in audio equipment such as mixers, recording systems and speakers.

Before the advent of the HDMI line, electronics companies used analog transmissions to use a variety of connections, such as VGA, radio frequency and coaxial cable. The HDMI cable uses only one connection, which greatly simplifies the video and audio interfaces required for the home entertainment system during installation. Cable digital TV provides digital signal transmission in an uncompressed format. As the first standardized compact interface, the picture and sound quality is greatly improved.

HDMI cable is a standard connection interface established by some large electronics companies, including Hitachi, Panasonic, Philips and other companies in the industry. DVI cables, HD HDMI cables use the same technology. DVI or digital visualization interface is a digital connection standard in PC environment. HDMI only adds an audio component to DVI, supporting different color spaces and other components, a smaller connector. HDMI cables have gradually become so popular, and most of the PCs and monitors sold today include HDMI interfaces and DVI ports.

The standard HDMI cable connector includes 19 pins. The best HDMI cable pins even use 24 carat gold - because gold is very resistant to corrosion and acts as a protective cap for corrosion protection. The outer protective material used to extend the extension can be made from many materials, such as durable, thick PVC plastic. The shorter HDMI cable can be used flexibly; however, for long HDMI cables, such as cables used for burying in walls or geography, it must be very strong to ensure smooth signal transmission. The HDMI cable also includes a long-distance application design, and the Green Hdmi line supports 30-meter HDMI cable (32.8-foot) transmission without the use of a repeater (this device is used to amplify the transmitted signal).

The HDMI cable contains conductor audio and visualization components. The audio and visual components also have an audio return channel that increases the speed and efficiency of their transmitted signals. Most of the conductors and solder are fused together, the connecting wires and connectors are oxygen-free copper, high-purity copper, and even some are silver solder. Silver and copper are the most conductive metals, but they are still corroded when exposed to the atmosphere. When copper and silver are oxidized and discolored, the green discoloration that may occur over time will affect the conductivity of the metal. If high-purity copper or silver is used in the cable, they will hardly be oxidized or corroded over time.

HDMI cables have grown rapidly over the past decade. The high-speed HDMI 1.4a cable has a minimum bandwidth of 10.2 Gbps (gigabits per second) and supports 1080p high-definition screen resolution. However, the best cables support 3D and other more advanced color spaces, which require higher bandwidth and resolution. Mini HDMI cable, version C, supports portable devices. These support HDMI 1.3 -- is an early version that supports 720p. Mini cables have smaller connectors, but they still have a 19-pin design like a larger cable.

The current HDMI cable also includes an Ethernet channel, which provides an internet connection in addition to audio and visualization components. The Ethernet connection does not affect the audiovisual components of the cable. Many devices with practical HDMI cables support connection to the Internet, and the Ethernet components that come with the HDMI cable eliminate the need for additional wires or wireless connections to the Internet. However, Ethernet applications for HDMI cables can only be applied to devices that support this technology.

This article is written by HDMI line expert Greenlink Technology, and you need to get GreenLink Technology license