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HDTV - The Unknown Side

February 15th, 2009
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Kamal asked:


Introduction

HDTV technology was first introduced in the US during the 1990s by a group of electronics companies called the Digital HDTV Grand Alliance. HDTV is capable of "theater-quality" audio because it uses the Dolby Digital (AC-3) format to support "5. HDTV offers a degree of clarity that is much closer to this. HDTV can be recorded to D-VHS (Data-VHS), W-VHS (analog only), to a HDTV-capable digital video recorder (for example DirecTV’s high-definition Digital video recorder, Sky HD’s set-top box, or TiVo’s Series 3 or HD recorders), or an HDTV-ready HTPC. HDTV is just one part of the DTV transition. HDTV is best viewed on a new high-definition television. HDTV requires an HDTV tuner to view and the most detailed HDTV format is 1080i.

Definition

The term "high-definition" can refer to the resolution specifications themselves, or more loosely to media capable of similar sharpness, such as photographic film and digital video. High-definition television (HDTV) potentially offers a much better picture quality than standard television. NTSC system, established in 1941, were high definition only in comparison with previous mechanical and electronic television systems, and NTSC, along with the later European 625-line PAL and SECAMs, is described as standard definition today.

Television

While some early analog HDTV formats were broadcast in Europe and Japan, HDTV is usually broadcast digitally, because digital television (DTV) broadcasting requires much less bandwidth if it uses enough video compression. To get a better picture HDTV televisions require a High Definition (HD) signal. As of 2007, broadcasters may demand, or cable-television operators may elect, to place HD signals in a premium band that requires higher cable fees. HDTV has at least twice the linear resolution of standard-definition television (SDTV), thus allowing much more detail to be shown compared with analog television or regular DVD.

Resolution

It should be noted that while HDTV is more like a theater in quality than conventional television, 35 mm and 70 mm film projectors used in theaters still have the highest resolution and best viewing quality on very large screens. Digital NTSC- and PAL/SECAM-like signals (480i60 and 576i50 respectively) are transmitted at a horizontal resolution of 720 or 704 "pixels". In Australia, the 576p50 format is also considered a HDTV format, as it has doubled temporal resolution though the use of progressive scanning. For example, you can get a 72" projection HDTV that has 1920×1080 resolution from $2500 to $5000 depending on the brand and model.

Satellite

Satellite services and a Cable TV providers are providing an increasing number of HDTV feeds. Satellite-based TV companies, such as Optimum, DirecTV, Sky Digital (In the UK and Ireland) and DishNetwork, offer HDTV to customers as an upgrade. To receive an HDTV broadcast you need either a TV with a built-in HDTV tuner, like this Panasonic plasma HDTV, an HDTV receiver which can pick-up off the air HDTV channels, cable HDTV, or satellite HDTV receiver like Dish Network HDTV and this DirecTV H10 receiver.

Technology

While high definition has become a reality for many consumers, the technical jargon associated with this exiting new technology is causing much confusion. Through the evolution of display technology, a new television has emerged; so totally different, a new TV ‘paragon’ has been created. it doesn’t require a degree in TV Technology.

In addition, lack of enthusiastic co-operation between broadcasters, cable/satellite providers, and manufacturers has injected further confusion for retailers on how to sell HDTV and consumers as what products to buy, how to use them, and to what programs are actually available in HDTV. On the other hand, a very high resolution source may require more bandwidth than is available in order to be transmitted without loss of fidelity.

To watch high definition television or HDTV you will need three things: A Satellite or Cable program subscription to HD Programming; An HDTV Satellite Receiver or Digital Set Top Box; A high definition television set (HDTV). But beyond all argument, HDTV offers the ultimate in TV Picture Quality. We believe you’re interested in what you need to know, to buy and enjoy a Digital-HDTV – NOT, how to build one.



Tyrone

Technology , ,

LCD Tvs – Sony and Toshiba

January 18th, 2009
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Gill Critchley asked:


There has been an increase in the amount of people wanting TVs that are bigger, better and of course more HD ready than their current sets. A possible reason for this may be the digital switchover prompting people to swap their old analogue sets for brand new up-to-date, HD ready ones – it’s the perfect excuse. The only problem that many people find is that there are so many TVs on the market to choose from. The only decision that you may not have to make anymore is whether you want an LCD screen or a plasma screen. Over the last couple of years, LCD TVs seem to have won the fight and come out on top, of course, it is still possible to buy a plasma TV and there’s nothing categorically wrong with them, but LCD TVs seem to be the most popular choice. This is good news as there are now so many models of television to choose from that the fewer decisions the better. This article discusses two very popular TVs around at the moment, one is a well-known favourite and one is a new model that claims to have some very impressive TV technology. The first TV is the Sony Bravia X4500. This brand has had a lot of success as of late and new and more updated models are popping up regularly. This X4500 model ranges from a 40-inch screen right the way through to a huge 55-inch screen. This Sony LCD TV also has six main speakers and two woofer speakers on the 55-ich model or four main speakers and 2 woofer speakers on the 46-inch model. This TV also sports four HDMI ports, a wireless DNLA connection and a USB port as well and for that added extra, the X4500 TVs also come with black or red speaker covers so that you can match your new prized possession with your living room. A TV that has just come out and is hoping to take away some of the limelight from Sony is Toshiba’s Regza ZV. This TV is said to have proprietary Resolution and up-scaling technology. This means that the TV can upgrade standard-definition quality television to “near-HD levels of clarity” by using a cell processor algorithm. This is quite some claim and could allow the viewer to watch quality, clear images from programmes that are not even being transmitted in HD quality. On top of this, the TV also comes in 42-inch and 46-inch screen sizes, is equipped with Toshiba’s Active Vision M100 HD 100Hz picture processing, has crisper blacks and whites with a softer transition between the two and Full HD 1920 x 1080p panels. This Toshiba LCD TV does sound like a very impressive set and is available to buy from the beginning of December; the 42-inch model will be on sale for £900.

LCD TVs seem to be the more popular choice of sets now. The Sony Bravia X4500 model is a very popular brand and this Sony LCD TV also has six main speakers and four woofer speakers in the 55-ich model. The Toshiba LCD TV will be available to buy from the beginning of December.



Jesus

Technology , ,

LCD Tvs – Sony and Toshiba

January 7th, 2009
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Gill Critchley asked:


There has been an increase in the amount of people wanting TVs that are bigger, better and of course more HD ready than their current sets. A possible reason for this may be the digital switchover prompting people to swap their old analogue sets for brand new up-to-date, HD ready ones – it’s the perfect excuse. The only problem that many people find is that there are so many TVs on the market to choose from. The only decision that you may not have to make anymore is whether you want an LCD screen or a plasma screen. Over the last couple of years, LCD TVs seem to have won the fight and come out on top, of course, it is still possible to buy a plasma TV and there’s nothing categorically wrong with them, but LCD TVs seem to be the most popular choice. This is good news as there are now so many models of television to choose from that the fewer decisions the better. This article discusses two very popular TVs around at the moment, one is a well-known favourite and one is a new model that claims to have some very impressive TV technology. The first TV is the Sony Bravia X4500. This brand has had a lot of success as of late and new and more updated models are popping up regularly. This X4500 model ranges from a 40-inch screen right the way through to a huge 55-inch screen. This Sony LCD TV also has six main speakers and two woofer speakers on the 55-ich model or four main speakers and 2 woofer speakers on the 46-inch model. This TV also sports four HDMI ports, a wireless DNLA connection and a USB port as well and for that added extra, the X4500 TVs also come with black or red speaker covers so that you can match your new prized possession with your living room. A TV that has just come out and is hoping to take away some of the limelight from Sony is Toshiba’s Regza ZV. This TV is said to have proprietary Resolution and up-scaling technology. This means that the TV can upgrade standard-definition quality television to “near-HD levels of clarity” by using a cell processor algorithm. This is quite some claim and could allow the viewer to watch quality, clear images from programmes that are not even being transmitted in HD quality. On top of this, the TV also comes in 42-inch and 46-inch screen sizes, is equipped with Toshiba’s Active Vision M100 HD 100Hz picture processing, has crisper blacks and whites with a softer transition between the two and Full HD 1920 x 1080p panels. This Toshiba LCD TV does sound like a very impressive set and is available to buy from the beginning of December; the 42-inch model will be on sale for £900.

LCD TVs seem to be the more popular choice of sets now. The Sony Bravia X4500 model is a very popular brand and this Sony LCD TV also has six main speakers and four woofer speakers in the 55-ich model. The Toshiba LCD TV will be available to buy from the beginning of December.



Lynn

Technology , ,

Hdtv Basics

January 2nd, 2009
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Kozsun Huseyin asked:


In a generation there comes a technological innovation which brings essential benefits to people. The tele is such a creation. Ever since the TV sets creation people have been on the pursuit for better and better TV sets. Now alas HDTV TVs have satisfied the urges of many movie film lovers.

HDTV TVs or high-definition TV sets are an amazing new technological advancement to the HDTV TV. Ever since coming to the marketplace HDTV TVs have created a craze. Film addicts, sport fans, and anyone who wants the screen to be as real as real life is amazed at what HDTV TVs display on their screens.

We often ask what is HDTV TV, particularly when we have not seen one of these great HDTV TVs in the past? The HDTV basics is that you watch TV at high-definition. A HDTV TV has extraordinary resolution and magnificent digital surround sound. A HDTV TV removes the unacceptable black bars that a lot of movie formats come with. Putting it simply - a HDTV TV is watching wide screen how it is meant to be! Since HDTV TVs have been released, they have been in great demand. Anyone who wants the best out of a TV set wants to get a HDTV and learn about HDTV. As with all fresh technologies released there is a lot to learn about all the new specifications and which HDTV TV to buy.

When buying a HDTV TV for home, you want to make sure that you are actually getting a HDTV TV. If you don’t want to end up with a television with ordinary visual and audio, then you need to understand the differences between analog and HDTV formats to determine if you really need an upgrade for your watching enjoyment.

::: Features of HDTV TVs :::

Technically, a HDTV TV give a much better and improved screen resolution. Basically meaning that your HDTV TV, can easily provide you with better picture quality whether you are watching a good DVD movie or a documentary it doesn’t matter. You simply have amazing picture quality (though the end result depends on your signal quality). The big highlight of HDTV TVs is that you can watch wide screen as it is meant to be, without having parts of the screen cropped. HDTVs simply give a unprecedented picture quality that is crisper and finer than existing TV sets.

A great thing with these new HDTV TVs is that they can easily complement other analog based video equipment, such as your camcorders, DVD players, gaming consoles. On a gaming console such as the Sony Playstation range, you can see a new level of experience with a HDTV TV.

Buying a HDTV TV can be the best buy you can make. The picture quality is simply breathtaking, and will please many whether used for playing video games on the console or watching a $100 million movie, you will be pleased with a HDTV TV. Keep in in mind with HDTV TVs is that your HDTV TV may be great, and offer the best possible picture known to man! But if your provider of the signal (TV company, etc) can’t give a good signal, it doesn’t matter your picture quality will be no good. Also when you buy a new HDTV TV to keep in mind to get a flexible HDTV TV, one that has features which you may not use now, but might need in future - such as DVI or HDMI.



Harvey

Technology , ,