Oct 03 2008

Know About HDMI

Posted by virayvibe

What is HDMI?

HDMI or High-Definition Multimedia Interface, is the first and only industry supported all digital audio / video interface for transmitting uncompressed digital data. As an alternative to consumer specifications, HDMI connects digital audio / video sources such as PCs, Blu-ray Disc Player, AV receiver, video games, consoles and video boxes of compatible devices. On a single HDMI cable supports any PC or TV-Video format with a maximum of 8 channels to crystalline digital audio.

Today, more than 700 companies in the Consumer Electronics division have adopted and implemented new versions of the HDMI specification.

Benefits

Image Quality: Compared to other connections, HDMI provides the best image quality, which are available today. There may be high-definition video up to 1080p resolution at 60 frames per second, the intensity of bandwidth video format currently available.

Audio Quality: The quality of image, HMDI can also use the highest resolution, audio tracks, including Dolby TrueHD and DTS-HD Master Audio. It supports up to eight audio channels 24 bit 192 kHz. The only other marriage, the same quality of audio multi-analog cable, but you need no less than eight separate cables to only the same quality.

Intelligence: More information on a home entertainment system, it is more efficient and easier to use. HDMI with new features such as One-Touch play and automatic setup. One-Touch-Play allows the user to all devices for playback with the touch of a button.

Ease of Use: in the HDMI cable, what is otherwise more cables. Finally, HDMI eliminates the cost, the background image, and the complexity of several son. These functions are particularly favorable, if the updating or adding equipment.

HDMI & Entertainment

The implementation of HDMI on the way as we do with our components in set-up. As an HDMI cable can replace several analog cables, with the construction of Home Theater Systems is simplified. Based on the two routes, the components are connected via HDMI continuously between the background, so that the content is best, without much user.

HDMI cable

Considering that the standard DVI cable was originally developed for PC, HDMI cable is specially designed for Consumer Electronics products such as DVD players and digital television equipment. Manufacturers producing standard and high-speed HDMI cable. Standard cable normally lead to a speed of 75MHz, while cable broadband generally lead to a speed of 340MHz. The HDMI standard, two other major channels: CEC (Consumer Electronics Control Channel) and DDC (Display Data Channel).

HDMI-CEC feature uses two channels of communication to enable remote control, such as One-Touch Play already mentioned. Since the CEC is an optional feature, consumers need to be produced in the feature list.

HDMI technology has been developed for non-construction of copper cables over long lengths. However, the signal over long tend to deteriorate the cable. The maximum cable length recommended is approximately 33 meters.

Suggestions

Note that if you use a DVI-compatible device, which is not supported HDCP, then connect your equipment to a DVI-HDMI HDMI is the force capable of the high definition video content to the default resolution .

When buying an HDMI cable, the price is not a factor in the decision. In general, a $ 10 cable, so that its $ 50 online.

HDMI cable for both types of connections: a compact type A 19 pin connection, and just over 29-pin HDMI type B-. This second connection enables the use of dual-link HDMI configuration, which doubles the maximum transfer speed.

Later versions of HDMI technology, among others, support for A-bit Super Audio CD (SACD) Direct Stream Digital.

Frequently Asked Questions

How much bandwidth do you need? Bandwidth for a specific resolution by updating the rates and Blanking interval of the monitor. The following formula is for calculating the specific bandwidth:

Bytes = Resolution Refresh Rate x x [1 + Stamping period] BPS

(If the blanking period is the sum of horizontal and vertical blanking intervals)

As an example, let us define more HDTV standard today: HDTV 1080p 60 Hz video signal with a total of 16% of Blanking interval. This means that the bandwidth is equal to 1920 x 1080 x 60 x [1 + .16] = 144.4MHz or 144.4 million pixels / s

Are all new versions of HDMI-compatible with earlier versions? Yes, all HDMI versions are fully backwards compatible with previous versions, including DVI devices.

Can I keep my existing HDMI version? Now, it is not possible, an upgrade. If this conversion was in the future, it comes directly from the manufacturer.

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