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
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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.
Digital Ordnance Announces Frame Thrower™ HD-SDI Playback for Film, HDTV and Digital Cinema
Las Vegas, NV (ContentDesk via ContentDesk Direct) April 25, 2006 -- Digital Ordnance has chosen the 2006 National Association of Broadcasters (NAB) conference to release the latest addition to the Companys Frame Thrower" line of reliable, real-time uncompressed 2K/4K HD playback systems: Frame Thrower" HD-SDI.Used in the production of over 100 films including Chronicles of Narnia, Underworld, Van Helsing, Flight Plan, and Mr. & Mrs. Smith, Frame Thrower" has quickly established itself as the scalable, cost effective high-performance playback system for film, HDTV and HD projection systems. Frame Thrower" HD-SDI delivers the most accurate results possible using completely uncompressed images and preserving at least 10 bits per color component from source material to screen, at 2048x1080. Beyond production workflows, Frame Thrower" HD-SDI fully supports high-performance playback of content destined for digital cinema and multi-screen venues.Frame...
Digital Ordnance Announces Frame Thrower™ HD-SDI Playback for Film, HDTV and Digital Cinema 
Hdtv > Digital Ordnance Announces Frame Thrower™ HD-SDI Playback for Film, HDTV and Digital Cinema
Winegard Company, Holder Of 60 Patents Over The Years, Awaits Issuance Of Another US Patent For its Best Selling Off-Air Antenna, The Squareshooter?
Winegard Company announced today that an important step in protecting its new products and technologies has occurred in the patent process for the SquareShooter? SS-1000 and SS-2000 series of digital Antenna Platforms. Bob Howell, Director, Distribution Systems/Off-Air Antenna Business Group for the Winegard Company said, "The formal examination is officially over for the SquareShooter and we expect issuance of the US patent this summer. The application is on its way the US patent office to be assigned a date of issuance, so we're well on our way to getting the patent issued."The patent will cover both the SquareShooter? SS-1000, selected as an Honoree in the 2004 CES Innovations Design and Engineering Showcase and the SS-2000, a more powerful version equipped with the new Winegard digital preamp, extending the SquareShooter? range up to 40 or 50 miles away from the transmit source.Howell continued, "The right Off-Air DTV/HDTV Antenna is now a necessity, not an accessory. Getting the...
Winegard Company, Holder Of 60 Patents Over The Years, Awaits Issuance Of Another US Patent For its Best Selling Off-Air Antenna, The Squareshooter?
Hdtv > Winegard Company, Holder Of 60 Patents Over The Years, Awaits Issuance Of Another US Patent For its Best Selling Off-Air Antenna, The Squareshooter?
Choosing the right HDTV antenna for you
Choosing an HDTV antenna can be a frustrating business. However, if you prefer to receive HDTV through an antenna, rather than a satellite or cable subscription, there are a couple of things that will make life easier.First of all, if you can, you should opt a roof or attic mounted HDTV antenna. This will give you the best chance of picking up a good signal and is a must if you a re in an area where signal strength is poor such where you live some distance away from the nearest transmitter or where your signal is affected by hills or other environmental factors.If an external HDTV antenna is not an option, perhaps because you live in an apartment or in a building of historic interest, then you'll have to go for an internal, set-top antenna. Unfortunately, every HDTV antenna is not alike and the quality of your picture can vary greatly depending on which antenna you choose. So how do you know which one to go for? Perhaps the best way is to find out from people who already has an internal...
Choosing the right HDTV antenna for you
Hdtv > Choosing the right HDTV antenna for you
No World Record for HD Olympic Coverage, But the Race is On to Push HD Service to the Masses
Despite the fact that less than two million U.S. households actually received a high-definition feed of the summer Olympics ? with less than one million actually tuning into the HD programming ? this was the most extensive consumer exposure to HDTV programming and technology to date.
According to a new report from research consultancy The Diffusion Group, while HD Olympic coverage may have left many sophisticates complaining about limited selection and delayed programming, it nonetheless introduced the concept of high-definition television to a new and much more mainstream market.
However, exposure to HDTV is not the same as purchasing an HDTV or signing up for an HD service.
"One of the primary constraints to widespread HDTV diffusion is the widespread confusion among consumers as to what exactly HDTV is and does," says Scott Kipp, consulting analyst with The Diffusion Group.
"Although the critics of NBC's HD coverage are correct in many ways, there...
No World Record for HD Olympic Coverage, But the Race is On to Push HD Service to the Masses
Hdtv > No World Record for HD Olympic Coverage, But the Race is On to Push HD Service to the Masses
Olympics Generate Major Spike in HDTV Sales
(ContentDesk) February 23, 2006 -- This years coverage of the Winter Olympics on NBC is being broadcast in high definition (HD).
With HD quickly becoming common-place throughout homes, restaurants, and sports bars throughout the country major retailers are seeing major spikes in HDTV sales.
To take advantage of this amazing technology, you need the right equipment. To start, you need an HD ready or HD integrated TV. Once you have the television, you will need an HD broadcast signal.
There are three ways to do this: 1.With an Antenna- With an air (terrestrial) antenna, you can get HD at no cost (on NBC and other major networks). Either install a small indoor antenna or a large antenna to your roof and plug it into the TV. This option is only available in select US cities.2. With Cable TV- Call your cable company to find out if HD is available in your market. Usually, they can upgrade you for a nominal monthly charge.3.
With Satellite TV- If you have DIRECTV,...
Olympics Generate Major Spike in HDTV Sales
Hdtv > Olympics Generate Major Spike in HDTV Sales
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
10 Tips to Avoid ?Bandwagon Business?.
10 Tips to Avoid ?Bandwagon Business'. By ? 2005Firstly, we have to define exactly what ?Bandwagon Business' means. If you are familiar with my various articles, you will know that I often use common phrases or sayings in support of my argument / points.This is no exception!Here, the phrase is ?jump on the bandwagon' - meaning to get involved with the latest venture / fad / craze / in order to make money, achieve an element of success or just simply to appear ?cool'.In the business sense, I am...
What is HDTV? Hdtv sample resume
Hdtv > 10 Tips to Avoid ?Bandwagon Business?.
Discount Air Travel
The Internet is a great resource for finding the best air travel deals, and to find what people are actually paying for the advertised deal. A classic rule of thumb is not to settle for the first website that offers discount fares. Refer to several travel websites before deciding what you think is the best deal.
For flights within and originating from the U.S., Cheaptickets.com is one of the big players in the online airfare-shopping arena. You can use their price alerts tool, which...
Discount Air Travel
Hdtv > Discount Air Travel
cosmetic surgery
Understand the Unmatched Uniqueness of Secured Car Loans
Now you are just few steps away from becoming a car owner. How? Obviously with secured car loans.
Yes secured car loans are offering borrowers a chance to grab their dream of being a car owner. Whether you want to buy a new car or used one, secured car loans are always there to finance your dream. Even more, these loans are flexible enough to mould according to any kind of financial requirement of different sorts of borrowers.
Thus it is possible to make the first payment...
Understand the Unmatched Uniqueness of Secured Car Loans
Hdtv > Understand the Unmatched Uniqueness of Secured Car Loans
How your business can benefit from podcasting
You have heard the phrase??You have bought the product??or have you? Podcasting has finally arrived on the media scene and Ipods everywhere are listening closely. Do you have what it takes to create a quality podcast? Do you have any idea where to begin?Let us start by saying that if you are not familiar with podcasting do not be worried, just yet that is. Podcasting has evolved over the past year as a new medium for broadcasting. It has merged the terms "ipod" with "broadcasting" and formed what...
How your business can benefit from podcasting What is HDTV? Hdtv
Hdtv > How your business can benefit from podcasting