Common HDMI Terms and Definitions

Computers & TechnologyTechnology

  • Author Keith Hudson
  • Published January 21, 2008
  • Word count 602

What is HDMI? HDMI (High-Definition Multimedia Interface)

is the first and only industry-supported,

uncompressed, all-digital audio/video interface.

By delivering crystal-clear, all-digital

audio and video via a single cable, HDMI dramatically

simplifies cabling and helps provide consumers

with the highest-quality home theater experience.

HDMI provides an interface between any audio/video

source, such as a set-top box, DVD player, or A/V

receiver and an audio and/or video monitor, such

as a digital television (DTV), over a single cable.

In this article, we will discuss some common HDMI

terms and FAQ's.

What does "Gold Plated" mean and how does that

effect performance? Gold plating refers to the

connectors. All of our HDMI cables have gold

colored, corrosion resistant connectors. The purpose

of actual gold content is to reduce corrosion that

would impede signal transfer.

What are ferrite cores? Ferrite cores are the cylindrical

fixtures placed near the connectors to reduce noise and

high frequency interference.

What is HDCP? HDCP stands for High-bandwidth Digital

Content Protection. It is a digital rights management

technology used by content providers such as movie

studios to protect their media property from being

illegally distributed.

What is the difference bewteen 28AWG HDMI cable

and 24AWG HDMI cable? The difference between the two

cables are the internal wire diameter (28AWG one is

thinner than 24AWG one), but please understand both

will satisfy your needs in terms of connection as

both are certified to support all resolutions up to

1080p.

What is AWG? AWG stands for "American Wire Gauge."

It is the thickness of the wire inside the cable. The

lower number AWG denotes thicker wiring and thicker

overall cable. Thicker cables are recommended for

longer cable runs because they offer less resistance

along the signal path.

What's the difference between HDMI and DVI? HDMI and DVI

use different types of connectors. They carry the same

type of digital video signal so HDMI is backward

compatible with DVI with the use of an adapter or

HDMI/DVI cable. DVI however, does not carry audio

signals so a separate connection will need to be

made for audio when going to or from DVI to HDMI.

What is the performance benefit of Tin and

Silver Plating? Tin and silver plating refer to actual

plating on the copper conduits. The idea behind plating

is to influence what is known as the "skin effect" of

digital signals. The Skin Effect says that higher

frequencies like those in digital tend to travel along

the surface (or skin) on the conduit. This makes the

signal more susceptible to disipation. So, plating is

suppose to trap the signal in. Tin, is more resistive

than copper, so the idea is that the signal is channeled

back into the core of the copper. Silver is less

resistive than copper so it''s suppose to help the

signal move along. The arguement is mostly subjective

and some people will have their own preferences.

What are Ferrite Cores and what do they do?

Ferrite cores are magnets on the end of cables

next to the connectors. They are the bulbs you see

just above the connector. They assist in signal

transfer and can be found on many types of electronic

cables.

What does the "(N)" refer to and what is meant by

"Net Jacket"? The (N) is an internal designator referring

to the Net Jacket in the product description.

The net jacket is a nylon mesh outer covering on

the body of the cable. It offers abrasion resistance

that protects the cable and gives the cable a nicer,

finished look.

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