All About HDMI Cables

All About HDMI Cables

Since 2003, HDMI cables have gained popularity, with hundreds of computer companies conforming to HDMI requirements with HDMI adapters.

7 companies teamed up to come up with this digital A/V wonder, and the number of consumer electronics companies adapting to the technology is continually rising.

What are HDMI Cables?

HDMI stands for High Definition Multimedia Interface. These cables are digital audio and video connectors that can transmit high definition multimedia data through a single line or feed. The cables offer a digital alternative to the older analog cables.

Each cable has the capacity to communicate high video resolutions and transmit 8 digital audio channels.

What Advantages Do These Cables Offer?

Following a high-speed Transition Minimized Differential Signaling (TMDS) protocol, with a bandwidth of 10.2 gigabits per second, HDMI cables can process various high definition audio signals, including MPCM, LPCM, DTS, DTS-HD Master Audio, Dolby Digital, DVD-Audio, Dolby Digital Plus, DTS-HD High Resolution Audio, Dolby TrueHD, and Super Audio CD with amazing clarity. It can also read high resolution video signals from 480i to 480p, 576i to 576p, 720p to 1080i, 1080p to 1440p, 1600p to 2160p, and so on. In this category, these cables remain unrivaled.

Because these cables can transmit HD data through a single line, you don't have to worry about messy wiring.

HDMI cables allow you to do all sorts of enjoyable things at the comfort of your own home. If you have an existing HD home theater, you are going to need cables to connect all sorts of fun digital gadgets to your HDTV. A typical HDTV has at least 2 HDMI slots to connect external devices like DVD players, DVRs, game consoles, camcorders, Blu-ray players, personal computers, and many more.

Are These Cables Expensive?

There are these type of cables that are reasonably priced and not necessarily expensive. Prices range from to , although there are HDMI cables in the market that sell for as much as -but you don't have to buy them. There is no marked difference between a 10-dollar cable and a 50-dollar cable, even if the store does tell you that they offer you a lifetime warranty.

10-dollar HDMI cables are hardy things that can survive frequent use and last a long time. If by any chance, your 10-dollar HDMI gets busted, you can always buy another one, and it is still significantly cheaper than if you had purchased the high-end model.

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HDMI: Guide to HDTV Connection of the Future

HDMI: Guide to HDTV Connection of the Future

Background:

As the HDTV market continues to heat up, consumers are in need of being educated on the latest technology. One of the terms that you, the consumer, will surely run into while selecting a HDTV set is: HDMI. For most this is an unfamiliar term and we will explain the details of HDMI in this article so you, the consumer, is armed with the proper knowledge to make intelligent purchasing decisions.

What is HDMI: HDMI is an acronym for High Definition Multi-Media Interface. The HDMI specification (now at 1.2) was created by some of the largest consumer electronics manufacturers in the world: Hitachi, Matsushita, Philips, Silicon Image, Sony, Thomson, and Toshiba. HDMI is the latest digital HDTV interconnection standard. The notable differences between HDMI and the earlier HDTV interconnects standards (component video, and DVI) are:

-HDMI is all digital unlike analog component video cables

-HDMI supports multi-channel audio in addition to digital video. (DVI only supports digital video)

- HDMI is more compact in size and carries both audio and video signals therefore eliminate cable clutter.

-HDMI incorporates content protection called HDCP ( high definition content protection)

What does a HDMI connector look like: HDMI looks similar to a USB cable. The compact size and high integration (carries both audio and video) makes the HDTV installation experience truly "plug and play."

Why should I use HDMI:

-HDMI is all digital, so picture quality is "perfect" from source to display

-HDMI is both a digital audio and video connection. This will minimize cabling in your system

-HDMI is rapidly becoming the de facto standard for HDTV connections.

How does HDMI transport the digital video: The video portion of HDMI is carried by 3 separate differential pairs. Each pair transports 1 of 3 uncompressed native digital R,G, B signals from source ( dvd player, set top box) to the sink ( HDTV display). A unique protocol, T.M.D.S.( transmission minimized differential signaling), is used to transport the digital data. Each pixel is represented by 24 bits ( 8 bits each for each of the primary colors). The T.M.D.S. protocol then "calculates" and stuffs 2 extra bits to the video data stream in order to create a digital stream with minimum transitions ( lower EMI, lower interference) and also minimize long strings of '1' and '0' which can cause detection errors.

A fourth differential pair, called the TMDS clock provides the pixel clock for timing the data stream. The maximum TMDS single link pixel clock rate is 165 MHz.

What is the data rate of a single link HDMI connection: The maximum pixel clock rate is 165MHz and each of the 3 TMDS video streams carries 10 bits. Therefore the aggregate data rate is 3 x 10 x 165MHz = 4.96Gbps.

How many pins are included in the HDMI connector: There are 19 individual pins in the HDMI connector. There are 3 pairs of TMDS signals which carry all the digital audio and video signals.

How is the digital Audio signal transported: The multi-channel audio is time multiplexed into the TMDS data streams. Audio is much lower data rate (192kbps) and the extra time is used to demux the audio signals.

What is HDCP: HDCP is an acronym for High-Bandwidth Digital Content Protection. HDCP is an encryption method developed by Intel in order to control unauthorized copying of digital media. The encryption is carried out in the HDMI transmitter found in the "source" ( dvd player, set top box) and decryption is carried out by the HDMI receiver ( the HDTV display). The secret keys for encryption are exchanged between the source and display over an I2C bus ( pins 15 and 16).

Is HDMI compatible with DVI: DVI is the predecessor to HDMI. HDMI and DVI are identical as far as video is concerned. Therefore, video backward compatibility exists. However, DVI will not support digital audio. For example, if you have an older DVI connection on your source and a HDMI connector on your display, a HDMI to DVI cable is all that is needed in order to view the video. A separate audio cable ( TOSLINK or SPDIF) will be needed to carry the digital audio.

What formats will HDMI support: HDMI is high speed digital connection and will support resolutions of 480i, 480P, 720i, 720 P, 1080i and in the future,1080P.

Conclusion:

HDTV technology is changing rapidly. HD connections such as HDMI will become the de facto standard in HDTV connections. We have outlined the important features of HDMI, so the consumer is well informed and ready to make intelligent purchasing decisions.

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PowerBridge HDTV In-Wall Power Solution Installation

PowerBridge HDTV In-Wall Power Solution Installation On YouTube.

PowerBridge Total Solution In-Wall Power Extension DIY kit for all wall mounted LCD, LED Plasma HDTV. Easy and SAFE to install. Don't put an extension cord inside the wall. This video shows you the step by step to running the electrical power wire and connecting them safely to the Power OUTLET and directly ot the PowerINLET receptacles. Also you will see how to running the cables in the wall and get a good idea of the position you should look for when installing your PowerBridge Solution.

Keywords: powerbridge, In-wall, On wall, recessed power outlet, extension cord, HDTV, Mount TV, HD, flat panel plasma tv, flat screen lcd, wall mount, DIY

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A Buyers Guide To HDMI Cables

A Buyers Guide To HDMI Cables

HDMI

(High-Definition Multimedia Interface) is an audio video interface for transmitting uncompressed digital data between high definition devices such as HD DVD players, HD satellite boxes and High Definition Televisions. It offers crystal clear, all-digital, audio and video signal in a single cable.

Versions of HDMI.

There are various versions of HDMI cable, v1.0, v1.2, v1.3a, v1.3b, v1.4. The versions of 1.3 (a & b) relate to the testing specification to which the cable has been certified and do not necessarily offer increased functionality.

Version 1.4 is the latest most up to date specification which includes an Ethernet channel to be compatible with IP enable equipment. Version 1.4 also supports 3D and has resolutions up to 4096 X 2160. The HDMI organisation announced new regulations regarding the labelling of version 1.4 cables, these regulations prohibit manufacturers from using the phrase "1.4" on the cable or packaging, this was introduced to aid end stage users who were becoming increasingly confused by the version numbers. The latest version 1.4 is known as "High Speed HDMI Cable With Ethernet".

All newer versions are fully backwards compatible with older versions. The HDMI licensing authority is currently working with manufacturers to focus on features and de-emphasize version numbers to help reduce customer confusion. The features fall into three categories:

Standard and High Speed refer to the two types of HDMI cables and can be used with 1080i and 780p devices. High Speed HDMI cables can be used for 1080p devices such as Blu-ray players and PS3 gaming consoles.

Deep Colour, this refers to Television and monitors that can display more colours than standard.

X.V Colour, this offers an expanded, or wider range of colours which can not usually be displayed on a TV.

What to Look For.

When buying HDMI cables there are certain things to look out for. Ferrite EMI Suppressors are important for reducing electro magnetical interference, they are round barrel shaped coils usually found on either end of the cable. Shielded or even double and triple shielded cables improve quality. Gold plated connectors don not have a massive effect on image quality, but they do reduce oxidization.

Cable length

HDMI cable specification does not define a maximum cable length, but due to attenuation there is a limit as to how long a HDMI lead can successfully transmit the signal. Build quality and the material greatly affect the overall length an HDMI cable can be used without losing quality. A safe limit for no loss of quality would be around 7.5M. Higher quality cables can be used up to 20M. Amplifiers are available to increase the distance a signal can travel without deteriorating.

How Much To Spend

Most equipment manufacturers will supply a basic cable in the box; this cable is intended to get you up and running. The most cost effective upgrade you can make is to spend a few pounds on a good quality HDMI cable. It is pointless spending 1500 pounds on a 42 inch TV and then 5 pounds on a cable. Budget cables are fine, but generally the more you spend the better quality you can expect. A good rule of thumb would be to spend around 5% of the cost of your TV.

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