| Introduction | | | | signals (480i60 and 576i50 respectively) are |
| HDTV technology was first introduced in the US during | | | | transmitted at a horizontal resolution of 720 or 704 |
| the 1990s by a group of electronics companies called | | | | "pixels". In Australia, the 576p50 format is |
| the Digital HDTV Grand Alliance. HDTV is capable of | | | | also considered a HDTV format, as it has doubled |
| "theater-quality" audio because it uses the | | | | temporal resolution though the use of progressive |
| Dolby Digital (AC-3) format to support "5. HDTV | | | | scanning. For example, you can get a 72" |
| offers a degree of clarity that is much closer to this. | | | | projection HDTV that has 1920×1080 resolution |
| HDTV can be recorded to D-VHS (Data-VHS), | | | | from $2500 to $5000 depending on the brand and |
| W-VHS (analog only), to a HDTV-capable digital video | | | | model. |
| recorder (for example DirecTV's high-definition Digital | | | | Satellite |
| video recorder, Sky HD's set-top box, or TiVo's Series | | | | Satellite services and a Cable TV providers are |
| 3 or HD recorders), or an HDTV-ready HTPC. HDTV | | | | providing an increasing number of HDTV feeds. |
| is just one part of the DTV transition. HDTV is best | | | | Satellite-based TV companies, such as Optimum, |
| viewed on a new high-definition television. HDTV | | | | DirecTV, Sky Digital (In the UK and Ireland) and |
| requires an HDTV tuner to view and the most detailed | | | | DishNetwork, offer HDTV to customers as an |
| HDTV format is 1080i. | | | | upgrade. To receive an HDTV broadcast you need |
| Definition | | | | either a TV with a built-in HDTV tuner, like this |
| The term "high-definition" can refer to the | | | | Panasonic plasma HDTV, an HDTV receiver which |
| resolution specifications themselves, or more loosely to | | | | can pick-up off the air HDTV channels, cable HDTV, or |
| media capable of similar sharpness, such as | | | | satellite HDTV receiver like Dish Network HDTV and |
| photographic film and digital video. High-definition | | | | this DirecTV H10 receiver. |
| television (HDTV) potentially offers a much better | | | | Technology |
| picture quality than standard television. NTSC system, | | | | While high definition has become a reality for many |
| established in 1941, were high definition only in | | | | consumers, the technical jargon associated with this |
| comparison with previous mechanical and electronic | | | | exiting new technology is causing much confusion. |
| television systems, and NTSC, along with the later | | | | Through the evolution of display technology, a new |
| European 625-line PAL and SECAMs, is described as | | | | television has emerged; so totally different, a new TV |
| standard definition today. | | | | 'paragon' has been created. it doesn’t require a |
| Television | | | | degree in TV Technology. |
| While some early analog HDTV formats were | | | | In addition, lack of enthusiastic co-operation between |
| broadcast in Europe and Japan, HDTV is usually | | | | broadcasters, cable/satellite providers, and |
| broadcast digitally, because digital television (DTV) | | | | manufacturers has injected further confusion for |
| broadcasting requires much less bandwidth if it uses | | | | retailers on how to sell HDTV and consumers as what |
| enough video compression. To get a better picture | | | | products to buy, how to use them, and to what |
| HDTV televisions require a High Definition (HD) signal. | | | | programs are actually available in HDTV. On the other |
| As of 2007, broadcasters may demand, or | | | | hand, a very high resolution source may require more |
| cable-television operators may elect, to place HD | | | | bandwidth than is available in order to be transmitted |
| signals in a premium band that requires higher cable | | | | without loss of fidelity. |
| fees. HDTV has at least twice the linear resolution of | | | | To watch high definition television or HDTV you will |
| standard-definition television (SDTV), thus allowing | | | | need three things: A Satellite or Cable program |
| much more detail to be shown compared with analog | | | | subscription to HD Programming; An HDTV Satellite |
| television or regular DVD. | | | | Receiver or Digital Set Top Box; A high definition |
| Resolution | | | | television set (HDTV). But beyond all argument, HDTV |
| It should be noted that while HDTV is more like a | | | | offers the ultimate in TV Picture Quality. We believe |
| theater in quality than conventional television, 35 mm | | | | you're interested in what you need to know, to buy |
| and 70 mm film projectors used in theaters still have | | | | and enjoy a Digital-HDTV – NOT, how to build |
| the highest resolution and best viewing quality on very | | | | one. |
| large screens. Digital NTSC- and PAL/SECAM-like | | | | |