hdmi-glossary
Glossary

Confused about HDMI "jargon".

Here is your answer.

The-Cable-Store.com has developed a comprehensive glossary of HDMI terms to help you understand the HDMI interface so you can make informed decisions about your next purchase. 

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3D

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3D television is a form of autostereoscopic display. Entertainment companies clearly see that there is a market for moving a 3D video to the home and there is a technological basis for claiming that 3D movies today are more than just a gimmick. In August 2008, a task force was established to define the parameters of a stereoscopic 3-D mastering standard for content viewed in the home. Called the 3-D Home Display Formats Task Force, it aims to move the 3-D home entertainment industry forward by setting the stage for a standard that will enable 3-D feature films and other programming to be played on all fixed devices in the home, no matter the delivery channel. It explored the standards that need to be set for 3-D content distributed via broadcast, cable, satellite, packaged media and the Internet to be played-out on televisions, computer screens and other tethered displays.

4k2k

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4k2k refers to the resolution of a display screen.
It is a generic term that can mean either:
3840 x 2160 24Hz/25Hz/30Hz  or,
4096 x 2160 24Hz

Audio Return Channel

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An audio return channel allows the HDTV to send the audio stream to the A/V receiver over the HDMI cable, eliminating the need for an extra cable.

Automotive Connection System

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Special cabling and connectors that are designed to work around the environmental factors experience in an automobile, such as heat, vibration and noise.

Bandwidth

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A typical method of performing a measurement is to transfer a 'large' file and measure the time taken to do so. The throughput is then calculated by dividing the file size by the time to get the throughput in gigabits per second per second.(Gbps) Here are some typical consumer electronics bandwidths:
Standard DVD = 0.81 Gpbs
HD set Top Box = 2.23 Gbps
Blu-ray player = 4.46Gbps
Games Console = 6.68 Gbps
1080p Screen 12 bit color = 10.2 Gbps

Blu-ray

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Blu-ray is an optical disc storage medium designed/created by Sony to supersede the standard DVD format. Its main uses are for storing Playstation 3 games, high-definition video and data storage with 50GB per disc. The disc has the same physical dimensions as standard DVDs and CDs.
The name Blu-ray Disc derives from the blue-violet laser used to read the disc. While a standard DVD uses a 650 nanometre red laser, Blu-ray uses a shorter wavelength, a 405 nm blue-violet laser, and allows for almost six times more data storage than on a standard DVD.

Category 1 cable

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Standard (or “category 1”) cables have been tested to perform at speeds of 75Mhz, which is the equivalent of a 1080i signal.

Category 2 cable

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High Speed (or “category 2”) cables have been tested to perform at speeds of 340Mhz, which is the highest bandwidth currently available over an HDMI cable and can successfully handle 1080p signals including those at increased color depths and/or increased refresh rates. High-Speed cables are also able to accommodate higher resolution displays, such as WQXGA cinema monitors (resolution of 2560 x 1600).

CEC - Consumer Electronics Control (CEC)

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One of the channels in an HDMI connection is dedicated to a set of advanced control functions, collectively known as CEC. When enabled by the manufacturer, CEC functionality allows connected devices to control each other in useful ways. For instance, a single command on a remote control can be used to play a DVD, or to launch other complex activities across multiple devices in a home theater system.

Color Space

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A wide range of colors can be created by the primary colors of pigment (cyan (C), magenta (M), yellow (Y), and black (K)). Those colors then define a specific color space. However, this is not the only possible color space. For instance, when colors are displayed on a computer monitor, they are usually defined in the RGB (red, green and blue) color space. This is another way of making nearly the same colors (limited by the reproduction medium, such as the phosphor (CRT) or filters and backlight (LCD)), and red, green and blue can be considered as the X, Y and Z axes.