What is HDTV?
What is HDTV?
By
Dish-Network-Satellite-TV.wsWebmasters: You may reprint this article in its entirety,providing you leave the Byline and About the Author sectionsintact, including the links to
Dish Network Satellite TV.
High
Definition
Tele
Vision is what HDTV literally means. But high definition compared to what? In order to answer this question, we need to know a bit about the original analog TV system.
Analog TV30 images per second (in Europe 25) are shown by normal
analog TV sets. It does this by writing image lines horizontally, 525 lines in one image (In Europe 625) on the screen. The number of pixels on one line is about 500.
This would be a definition of 500 pixels per line by 525 (or 625) lines. Compared to modern computer monitors this is really bad. Even the lowest resolutions monitors have higher resolutions (640 x 480) than an analog TV.HDTV - High Definition TeleVision HDTV is high resolution Digital TeleVision (DTV) combined with Dolby Digital Surround Sound (AC-3). There are 18 different formats defined for Digital TV of which 6 are considered to be HDTV:
| Active Lines Per Picture | Pixels Per Line | Aspect Ratio | Frame Rate | Scanning Approach |
The difference between Progressive and Interlaced is not difficult. It has to do with how one image is built up.
With interlaced technology the odd lines are shown first and then the even lines are shown. The lines are shown in this order: 1,3,5,?.521, 523, 525, 2, 4, 6,?. 522, 524, 1, 3, etc. This means that every 1/60 of a second a half image is shown. This often results in flickering, which can be tiring for the eyes.Progressive technology manages to show a whole image every 1/60 of a second, resulting in a much smoother picture.How Is HDTV Better?
The Future of HDTVThe FCC (Federal Communications Committee) has mandated that all TV stations in the USA have to be able to broadcast HDTV programs by the year 2006. The mandates of the FCC do not have an impact on just the broadcast companies, but also on cable companies and consumers.
- Broadcast companies have to invest on new equipment like cameras, editing equipment, etc.
- Cable companies have to convert all of their equipment, including receivers at the homes of their clients.
- Consumers may have to buy new equipment, like a top-box to convert digital signals back to analog signals, or even buy a whole new TV set.
HDTV is the future, and a really big step forward. We once started with simple black and white TV, then moved to color TV, and wide screen TV. But all those systems were still based on the same signals as the original black and white TV used.
When color TV was introduced it was not possible to force the complete population to throw away their black and white TV-sets and buy a color TV set. Therefore a color TV signal still needed to be understandable for a black and white TV. This prohibited the improvement of picture quality until the age of Digital TV.The need to satisfy older TV sets no longer exists and the much higher quality HDTV is available via Satellite TV Systems.
. Gary Davis is owner of
Dish Network Satellite TV, has several years experience in the Satellite TV Industry and has written several articles on satellite TV.
SnapStream Media Announces Support for Market-Leading Digital / HDTV Tuner Cards from ATI Technologies, AVerMedia?, and DViCO
(ContentDesk) November 10, 2005 --
SnapStream Media, Inc. a leader in digital home entertainment products, announced today that Beyond TV 4 offers official compatibility with digital ATSC tuner cards manufactured by market-leading TV tuner card manufacturers including ATI Technologies Inc. (TSX: ATY, NASDAQ: ATYT),
AVerMedia, and DViCO.Official compatibility means that users of ATI, AVerMedia Technology, and DVICO TV tuner cards can confidently assemble PC-based DVRs with SnapStreams award-winning Beyond TV DVR software.
Compatible cards include:"???ATIs HDTV Wonder"???AVerMedias AVerTVTMHD"???DViCOs FusionHDTV5 Lite"???DViCOs FusionHDTV5 Gold Plus"???DViCOs FusionHDTV5 USB GoldBeyond TV also supports aftermarket HDTV tuner cards manufactured by ADS Tech, Kworld, and VBox.
A complete list of compatible TV tuner cards is available on the company's website at www.snapstream.com.Beyond...
SnapStream Media Announces Support for Market-Leading Digital / HDTV Tuner Cards from ATI Technologies, AVerMedia?, and DViCO 
Hdtv > SnapStream Media Announces Support for Market-Leading Digital / HDTV Tuner Cards from ATI Technologies, AVerMedia?, and DViCO
The Difference between EDTV and HDTV
Confused by EDTV vs HDTV? We don't blame you. The number of acronyms floating about with regard to digital TV is frightening. What's even more worrying is that very often they are used by people who have little or no knowledge about what they mean. If the person selling you doesn't know the difference between EDTV vs HDTV, how are customers supposed to decide which TV or projector to go for?In our guide below, we've tried to distill the technical info into as few words as possible and make it as straightforward to understand as we can.To properly explain EDTV vs HDTV, we need to step back a bit. Traditional TV has 525 lines of video which are interlaced.
Interlacing just means that every frame of video is split into two fields and each field is shown alternately. Although there are 525 lines in the signal, only 480 lines contain video, so it is sometimes referred to as 480i (480 lines interlaced). This is known as Standard...
The Difference between EDTV and HDTV
Hdtv > The Difference between EDTV and HDTV
HDTV Magazine Releases The State of HDTV Technology, 2006 Review, and CES Report
Alsea, OR
(ContentDesk) March 29, 2006 -- The much anticipated HDTV Technology Review 2006, by Rodolfo La Maestra, is now available in both a PDF downloadable file for immediate access or a printed version deliverable within days. You might think you have the whole story about HDTV until you thumb through its amazing 207 fact-filled pages, said publisher and HDTV pioneer Dale Cripps. The report is a comprehensive (and searchable) desk reference detailing all existing and near-future HDTV technologies and H/DTV products. It provides a clear explanation of the present and emerging HDTV technologies incorporated in these products,
said co-publisher, Shane Sturgeon, as well as a seasoned assessment of their respective strengths and weaknesses and their likely market successes or failures.
From politics to markets, the La Maestra report delivers unerringly the entire state of the H/DTV industry.Who should have this report? Thats easy, said Cripps, If you...
HDTV Magazine Releases The State of HDTV Technology, 2006 Review, and CES Report
Hdtv > HDTV Magazine Releases The State of HDTV Technology, 2006 Review, and CES Report
DIRECTV HD Programming Guide - HDTV Channels and Prices
DIRECTV HD Programming
HD (high definition) broadcasting represents the latest technological advance in satellite TV. Here's a guide to DIRECTV HD programming, prices, and special offers.
HD TV
HD TV is a television format that broadcasts programs in a high resolution format. This format produces a much sharper and clearer picture than standard (analog) TV format.
DIRECTV HD FEATURES
Here's what you get with DIRECTV HDTV:
* Better picture - With DIRECTV HDTV you get a much sharper image than with regular TV, resulting in a more lifelike picture.
* Wide screen - You get a full-width picture (16:9 aspect ratio) just like you see in the movies, giving you the impression that you're part of the scene.
* Better sound - DIRECTV HD audio programming is broadcast in Dolby Digital format for a three-dimensional...
DIRECTV HD Programming Guide - HDTV Channels and Prices
Hdtv > DIRECTV HD Programming Guide - HDTV Channels and Prices
Free DISH Network HDTV Receiver Guide
DISH Network HDTV Receiver
When you subscribe to DISH Network's satellite TV service you get all the equipment you need for satellite TV viewing - a dish and a four-room receiver system. But what if you want to watch your programs in high definition?
Well, you're in luck. You can upgrade your system and get an HDTV receiver for free when you place your order
DISH Network HDTV Receiver Features
DISH Network HDTV receivers have a host of features including:
* An integrated off-air tuner for high-definition and standard over-the-air
reception.
* An electronic program guide with on-screen navigation so you can see what's on satellite TV.
* Parental locks so you can prevent your children from watching inappropriate programs.
* Interactive TV so you can watch six screens at once, and on-demand...
Free DISH Network HDTV Receiver Guide
Hdtv > Free DISH Network HDTV Receiver Guide
airfare