157431-1

157431-1 Application Field & Working Principle

157431-1, also known as the High Definition Multimedia Interface (HDMI) is a digital audio/video connectivity format, designed to carry high resolution audio and video signals. It is a compact audio/video interface for transmitting high-fidelity audio and ultra-high-definition video signals between various devices separated by a large distance. It is one of the most widely used digital connectivity standards.

Application Field

HDMI cables are used for connecting a variety of digital devices in both home and commercial settings. It is used in the home to connect television sets, DVD players, game consoles, computers and even smart phones. In the commercial setting, it is used to connect video projectors, digital signage displays, video walls and other multimedia presentation systems. HDMI cables have also found use in medical and industrial application, where they are used to connect high definition monitors, digital recorders and other multimedia devices.

Working Principle

HDMI cables are composed of four twisted pairs of copper wires that are encased in a plastic or metal sheath. Each of the four twisted pairs carries an individual signal. The cables are designed to transmit uncompressed digital audio and video signals up to 10 Gbps. The cables are fully functional up to 1080p resolutions and support multi-channel audio signals up to 8 channels, as well as data streams such as Ethernet and USB. They also support the new 3D technology which allows 3D images to be transmitted between devices.

The cables also support an Audio Return Channel (ARC) which is used to transfer audio signals from televisions to home theater systems. This eliminates the need for additional cables for connecting audio systems. The cables are also backward compatible with previous versions of HDMI standards. This ensures that older devices can still be connected to new HDMI devices without any issues.

HDMI cables are considered to be very reliable as they use a low noise interference protection technique called EMI shielding. EMI shielding helps reduce interference from external sources, which can result in signal degradation. HDMI cables are also relatively easy to install and maintain. They can be used in many applications and are suitable for use in both residential and commercial settings.