Monday, January 28, 2008

HDTV Receiver

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More HDTV information for you by time you read this the information might be out dated as new development s are taking place so fast now a days that it is hard to keep up with the changes however we hope that a lot of the information that you find here will be of value to you.


The HDTV receiver

High definition television or HDTV is the more popular and emerging TV technology that is making the market anticipating and longing nowadays.

The reason for such warm perception for HDTV lies on its ability and feature that is far more superior compared to its earlier counterparts in the TV manufacturing industry.

HDTV is becoming too popular that a recent poll of TV viewers in Europe and also in the United States show that televiewers prefer to buy HDTV on teir next purchase of TV sets.

The survey can be very insightful and interesting. With the current tag prices for HDTV units, purchasing HDTV set will be very costly and expensive.

On the average, marketers and sales men estimate that the price of an HDTV is about 15 to 25 times more o above the price tag for the regular and conventional TV sets currently out and released in the market.

However, this very strong cable is still commercially unavailable. In the market are the DVI (Digital Visual Interface) and HDMI (High-Definition Multimedia Interface ).

Bi-directional connection between computers and monitors is possible through dual-channel versions of DVI. These connections carry only video. Audio must be carried by other HDTV cables.

HDMI carries digital uncompressed audio between devices such as an STB and a display. Smaller connectors are used with HDMI. The HDMI HDTV cable allows for bi-directional interface also. HDMI uses a 19 pin connector for single link or a larger 29 pin connector for dual link.

Cables to interconnect DVI and HDMI devices are also available.

DVI and HDMI are characterized by very short cable lengths because they designed to house a copy-protection scheme. Digital HDTV cables use twisted-pair cable not coaxial cables which analog HDTV cables use. DVI and HDMI work without problems over short distances but some low-quality cables falter beyond ten feet.

Practically no digital HDTV cable works beyond fifty feet. Pre-formed DVI cables up to 10 ft. in length are available. Longer lengths require specialized materials and are expensive. Although digital interconnections produce highest video and audio quality, running over long distances is the limitation of digital HDTV cables.

Other cables

S-Video Cables. are used in some televisions to improve picture quality of NTSC signals. Audio must be interconnected separately using RCA cables. S-Video cables are available in any length.

F Cables are coaxial cables with F-connectors used to connect to antennas or satellite dishes to the TV cable system. Several possible cables are selected depending on the length needed. RG-59 is acceptable for short lengths but a low-loss cable is needed for roof-top antennas.

Mini DB 15 RGB Monitor Cables are used to connect PC to HDTV displays with analog RGB interfaces. These cables extend up to 5 meters. Special cables are needed beyond this length. Screw locks secure the connectors to warrant a firm connection.

Firewire/1394 is designed for digital video connections. Audio and video are carried together. The four pin version is the most common but six pin versions are also available for some devices. Prefabricated HDTV cables like these are up to 3 meters.

Dolby Digital audio in SPDIF format is frequently transmitted in

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