An Introduction To High Definition TV

High Definition Television (or HDTV) is a digital television broadcasting system with higher resolution than traditional television systems (standard-definition TV, or SDTV). HD (High Definition) TV is digitally broadcast; the earliest implementations used analog broadcasting, but today digital television (DTV) signals are used, requiring less bandwidth due to digital video compression.

The rise in popularity of large screens and projectors has made the limitations of conventional Standard Definition TV (SDTV) increasingly evident. An HD (High Definition) TV compatible television set will not improve the quality of SDTV channels. To display a superior picture, high definition televisions require a High Definition (HD) signal. Typical sources of HD (High Definition) signals are as follows:

- Over the air with an antenna. Most cities in the US with major network affiliates broadcast over the air in HD (High Definition). To receive this signal an HD (High Definition Television) tuner is required. Most newer high definition televisions have an HD (High Definition) tuner built in. For High Definition Televisions without a built in HD (High Definition) tuner, a separate set-top HD (High Definition) tuner box can be rented from a cable or satellite company or purchased.

- Cable television companies often offer HD (High Definition) TV broadcasts as part of their digital broadcast service. This is usually done with a set-top box or CableCARD issued by the cable company. Alternatively one can usually get the network HDTV (High Definition Television) channels for free with basic cable by using a QAM tuner built into their HD (High Definition) TV or set-top High Definition box. Some cable carriers also offer High Definition TV on-demand playback of movies and commonly viewed shows.

- Satellite-based TV companies, such as DirecTV and Dish Network (both in North America) offer HD (High Definition) TV to customers as an upgrade. New satellite receiver boxes are usually required to receive HD (High Definition) content.

- Video game systems, such as the PlayStation 3 and Xbox 360, and digital set-top boxes that rely on an Internet connection such as the Apple TV, and those that don't such as the Netgear Digital Entertainer, can output an HD (High Definition) signal. The Xbox Live Marketplace, iTunes Music Store, and PlayStation Network services offer HD (High Definition) movies, TV shows, movie trailers, and clips for download, but generally at lower bitrates than a Blu-ray Disc.

- Most newer computer graphics cards have either HDMI or DVI interfaces, which can be used to output images or video to an HD (High Definition) TV.

- Almost all computer graphics cards have standard SVGA jacks which can be used to output images or video to an HDTV's "PC Input" jack.

- The optical disc standard Blu-ray Disc (25GB-50GB) can provide enough digital storage to store up to 10 hours of HD (High Definition) video content, depending on encoder settings.

Components of a typical satellite HD (High Definition) TV system:

1. HD (High Definition) TV Monitor 2. HD (High Definition) satellite receiver box 3. Standard satellite dish 4. HDMI cable, DVI-D and audio cables, or audio and component video cablesBesides an HD-ready television set, other equipment is needed to view HD (High Definition) television. Cable-ready TV sets can display HD (High Definition)content without using an external box. They have a QAM tuner built-in and/or a card slot for inserting a CableCARD.

High Definition image sources include terrestrial broadcast, direct broadcast satellite, digital cable, the high definition disc BD, internet downloads, the PlayStation 3, and the Xbox 360. The Nintendo Wii does not display HD (High Definition) content.

HD (High Definition) TV can be recorded to D-VHS (Digital-VHS or Data-VHS), W-VHS (analog only), to an HDTV-capable digital video recorder (for example DirecTV's high-definition Digital video recorder, Sky HD's set-top box, Dish Network's VIP 622 or VIP 722 high-definition Digital video recorder receivers, or TiVo's Series 3 or HD recorders), or an HDTV-ready HTPC. Some cable boxes are capable of receiving or recording two or more broadcasts at a time in HD (High Definition) TV format, and HD (High Definition) TV programming, some free, some for a fee, can be played back with the cable company's on-demand feature. The massive amount of data storage required to archive uncompressed streams make it unlikely that an uncompressed storage option will appear in the consumer market soon. Realtime MPEG-2 compression of an uncompressed digital HDTV signal is also prohibitively expensive for the consumer market at this time, but should become inexpensive within several years (although this is more relevant for consumer HD (High Definition) camcorders than recording HDTV). Analog tape recorders with bandwidth capable of recording analog HD (High Definition) signals such as W-VHS recorders are no longer produced for the consumer market and are both expensive and scarce in the secondary market.

Source: Wikipedia.org

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Satellite TV HDTV - Who's Got the Best?

Satellite TV HDTV (high definition TV) opens up a whole new world of entertainment. When you watch satellite TV in high definition, the picture and sound are so realistic you feel like you're part of the action.

HDTV is a must have if you want the best picture and sound when you watch satellite TV, but which satellite TV provider has the best free HDTV receiver and the best deal on HD programming?

Let's find out ...

Free Satellite TV HDTV Receivers

When you order DISH Network service you'll get a free satellite TV system consisting of a satellite dish and a four-room satellite receiver system. You also have the option of getting a free HDTV receiver. Their HDTV receiver lets you watch satellite TV programs in high definition format, giving you the clearest most lifelike picture available. This receiver also has Dolby Digital Surround Sound so you get a three-dimensional listening experience.

DIRECTV'S HDTV receiver has the same features as DISH Network's HDTV receiver, but you'll have to send them a $99 mail-in rebate to get their receiver.

Pay-For Satellite TV HDTV Receivers

DISH Network and DIRECTV also offer a combination HDTV DVR (digital video recorder) receiver for $199. With this receiver you can watch HDTV broadcasts and digitally record up to 200 hours of your favorite shows. You can also pause the show your watching to answer the phone or get a snack, then resume watching when you're ready.

Satellite TV HDTV Programming

DISH Network offers 30 channels broadcast in high definition format that are bundled with their standard broadcast channels. Prices start at $29.99 per month for their Bronze package which includes 30 HD channels and 75 standard broadcast channels.

DISH Network HD channels include Animania HD, Discovery HD, ESPN HD, ESPN2 HD, Equator HD, Film Fest, Food Network HD, FU, Gallery HD, Gameplay, Guy TV HD, HD News, HDNet, HDNet Movies, HGTV, Majestic HD, Monsters HD, National Geographic, Rave HD, Rush HD, TNT in HD, Treasure HD, Ultra HD, Universal HD, and World Cinema.

DIRECTV offers an eight-channel HD Package that includes ESPN HD, ESPN2 HD, Discovery HD Theater, HD Pay-Per-view, HDNet, HDNet Movies, TNT HD, and Universal HD for $9.99 per month. In order to get these HD channels you must subscribe to one of their standard broadcast packages with prices starting at $41.99 per month.

Bottom Line

When it comes right down to it DISH Network and DIRECTV's HDTV receivers are so similar there's hardly any difference between them. Both receivers are state of the art and provide the highest quality picture and sound available.

When it comes to programming, however, DISH Network is the clear winner with 30 HD channels as opposed to DIRECTV's 8 HD channels.

Visit http://www.TheSatelliteTVGuide.com for DISH Network HDTV programming information. Click on the following link for ordering information plus the latest special offers from DISH Network satellite TV.

The author, Brian Stevens, is the senior editor for TheSatelliteTVGuide.com and has written extensively on free Satellite TV HDTV receivers and HD programming.

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