HDTV stands for high definition TV. This simply represents the quality of the signal that your TV is capable of receiving is much more clear and the quality of the picture you see is much better than analogue TV.
Many cable companies have made the switch from analogue broadcast signals to high definition signals, providing a better quality viewing experience for the cable viewer. If you do not have a high definition TV, it is likely that you are only seeing fuzz at the moment.
A high definition TV has three standard levels – 720P, 1080i and 1080p. In comparison, a standard TV set has a 480i picture. These numbers represent the pixels that make up the lines of resolution that comprise the picture you view on your TV set.
“P” means progressive and “i” represents interlaced. A progressive broadcast signal refreshes all of the lines of resolution at once while the interlaced signal alternates filling in “even” and “odd” lines of resolution. Most standard HDTVs have 1080 interlaced lines of resolution and around 720 progressive scanned lines of resolution.
The HDTV picture has the best sharp and clear picture and generally has a much wider screen than a standard TV. HDTV eliminates the ghosting and dot crawl effects which was prevalent on standard TV sets. Aside from the clarity of the picture, HDTVs provide a much crisper sound quality as they receive digital signals. Analogue signals cannot provide that sort of clarity.
Most people tend to look for a flat panel screen HDTV which can be mounted to the wall with a wall mounting bracket. The flat panel screen tends to take up about 75% less space than a standard TV.
Many manufacturers have come out with HDTV models, including Samsung, Sony, Hitachi, Sharp, Daewoo, Panasonic, Phillips, RCA and LG. Each manufacturer has different options with their sets, so you should shop around to see what you need or want in your HDTV.
A really great feature that most manufacturers have come up with is a universal remote that comes standard with your HDTV so that you can program all remotes into one convenient remote.
The HDTV can be purchased in many sizes, it just depends on your specific requirements. Perhaps you have a media room in the basement or you want a smaller TV for your bedroom. Each size of TV offers something different. Comparison shopping is advised, once you know which features you need in your HDTV.
Kenji Tanaka has been writing articles on a wide range of topics. Come and visit his latest posts on what you need to know when considering a Samsung LN37C550 or the slightly smaller version Samsung HDTV LN22C450.
Many people, especially those with satellite TV receivers, have heard of MPEG. MPEG is a standard for reducing the size of the video signal so that it can be broadcast more easily. This is known as “signal compression”. Compressed Digital Video (CDV) is comparable to using MP3 files for music. It makes the file smaller without damaging it, so that it takes less time to download (less bandwidth), and more songs can be stored on your player.
CDV reduces the signal bandwidth requirements of a TV signal to enable its transmission via the Internet, DVD, cable, or satellite. This is necessary because an uncompressed video signal is very large. High definition files are much larger than standard definition files.
- A standard definition DVD movie file size is approximately 3 GB/Hour.
- An uncompressed 1280 X 720 (HDTV) movie file size is over 150 GB/Hour.
- An uncompressed 1920 X 1080 (HDTV) movie file size is over 350 GB/Hour.
- An MPEG-2 (CDV) HDTV movie file size is approximately 9 GB/Hour.
- An MPEG-4 (CDV) HDTV movie file size is approximately 5 GB/Hour.
The early use of CDV (for standard definition programming) was pioneered by the satellite TV companies, DirecTV and the Dish Network.
CDV is the process of discarding data for that information that would be invisible to the viewer. However, too much CDV will significantly distort the output. The higher the level of CDV, the more data that is discarded. Discard too much, and the distortion is very noticeable.
CDV is a tradeoff between file size and video quality. CDV operates on pixel neighborhoods, called a macroblock. The CDV records only the changes within those blocks. This works well if the video is primarily static images like text.
In a basketball game, when Kobe takes it to the basket, more pixels change from one frame to the next. When this happens, the video compression algorithm must work harder. The picture quality after compression depends on the complexity and predictability of the image.
The most common CDV standards are authored by the Moving Picture Experts Group (MPEG). Applying CDV to video is an intensive computer operation, but uncompressing (undoing the CDV) MPEG data to video is much less difficult. A C-Cube real-time MPEG-1 video encoder using 8 custom-designed video processor chips sells for $120,000.
MPEG standards are not owned by anyone. Various companies and researchers have MPEG patents, but one does not have to pay a license fee to use MPEG technology.
DVD and Blu-ray discs have CDV used during the mastering process (Blu-ray has enough disc capacity that the CDV is not aggressive, thus does not add significant distortion). High bitrate video algorithms with little CDV exist for video post-production work, but these still create an enormous file, and for this reason are seldom used for the distribution of video.
There are several MPEG standards being used but only three are in general use for commercial video distribution:
MPEG-1
MPEG-1 was the first widely used video (and audio) CDV standard. MP3 is an abbreviation of “MPEG-1 audio layer 3″. MPEG-1 supports a video resolution of 352 x 240 at 30 FPS (frames per second). It is the standard for the CDV of moving pictures (and audio). This standard has roots in CD-ROM video applications, and is a popular for video found on the Internet (.mpg files).
MPEG-2
MPEG-2 can support video resolutions of 720 x 480 and 1280 x 720, at 60 FPS. MPEG-2 is capable for both standard definition TV and HDTV. The MPEG-2 standards is also used to store data on a DVD. This is the algorithm used by DirecTV and the Dish Network.
MPEG-2 is the standard on which Digital Television set top boxes and DVD CDV is based. It is based on MPEG-1, but modified for use by digital broadcast television. Different algorithms have been developed and have been integrated into the standard. MPEG-2 is well suited to HDTV resolution and bit rates. With this technique, CDV can compress video data by 15 to 25 times while still producing a picture quality that is generally considered high quality.
MPEG-4
This standard is the future CDV standard that will almost certainly be used by most services delivering HDTV. This includes AT&T, DirecTV, and the Dish Network. A number of cable operators have also started MPEG-4 trials. This standard was originally designed for the Internet. Individual objects within a scene are tracked separately. This is very efficient.
The move to MPEG-4 by the satellite companies is not designed to improve picture quality, but because this algorithm is much more efficient. An MPEG-2 HDTV channel utilizes the bandwidth of six standard definition TV channels; an MPEG-4 HDTV channel would only consume the bandwidth of three standard definition TV channels. MPEG-4 uses half the bandwidth of MPEG-2, and so your service provider will be able to offer twice the number of channels.
OpenCable Application Platform (OCAP)
Consumers are now able to purchase their own cable box/DVR combos from electronics retailers. OCAP is a way for cable operators and other service providers to deploy interactive services like a PC. This will enable your American Idol voter to cast their vote with the remote control for their TV.
Consumers want their HDTV, and service providers who can supply the programming will thrive. MPEG-4 is the best and most cost-efficient option for cable operators and other service providers.
About the Author: Brian Bradshaw is a Certified Technical Specialist (InfoComm CTS). Areas of expertise include Video, Audio, Computation, HDTV Satellite Systems, and Communications. He has a communications technology business in Plano, Texas (Dallas). More information can be found at his Website: http://bradshaw-vacuum-technology.com
Double CD jewel cases are ideal for storing CDs and DVDs. These are two tray cases where two discs can be stored, one on each side of the flap of the case. A lot of DVD movies come in double CD jewel cases.
CD jewel cases are available in all shapes and sizes like fat ones that have sufficient space to accommodate a ?booklet? of CDs and slim ones that can only hold two CDs. They are also known by different names such as slimline double jewel case, assembled slim double jewel case, super jewel box 2-disc smart tray, chubby double CD jewel case, etc. There are also those that do not fit into normal racks that are available in the market for storing CDs.
Most of the double CD jewel cases are one of two types, the black or the clear tray. There are distinct advantages and disadvantage of each type. The advantage with the clear tray is that one can see through easily while the main advantage of the black clear tray is that it does not show marks and scratches on the surface too easily and it retains its elegance for a long time. What one goes in for is totally dependent on one’s needs and preferences.
The slim versions of the double CD jewel cases can hold two CDs in a slim profile case with double-sided trays that can be black, transparent, or made of graphite. Quite a few of them have notched centerpieces for easy opening. A lot of manufacturers in the market sell bulk quantities of double CD jewel cases, and this can be a good business proposition for people.
A good search on the Internet can provide many options for someone wanting a double CD jewel case.
CD Cases provides detailed information on CD Cases, Jewel CD Cases, CD Carrying Cases, Blank CD Cases and more. CD Cases is affiliated with CD Label Makers.
Back in the olden days before flash memory cards and digital camcorders came on the scene, many people shot their own home movies using camcorders that stored information on small VHS and other cassettes.
These cassettes can then be removed from the camcorder and placed in a standard VCR for viewing on their television set. Sadly, VHS has become an obsolete technology and camcorders that use these tapes are no longer in production. As tapes age, they become more subject to breakdown caused by environmental factors and simple breakage. This is why more and more people are saving precious memories with VHS to DVD service.
The last thing anyone wants to lose their home movies. After all, these moments were special enough to prompt someone to grab the camcorder and film them. Today, there are services available that can take VHS cassettes and put the information stored on them onto a DVD. This is available as a paid service or one could do it himself at home.
The key to doing it oneself is having the correct hardware on hand. There are a couple of ways to go about it. One is to connect the VCR directly to a DVD-R and simply copy the contents of the VHS cassette. However, this is probably not the best route to take because many home movies have flaws in the video that can be corrected using today’s digital technology.
The next option is to have a video capture device and software that allows one to connect the VCR to a home computer. Once one has the tape set to play from the beginning, and the computer set to start capture as soon as the tape begins, it is a simple matter of starting the tape and allowing the capture video program to convert this into a digital file.
As soon as the video is converted to digital, there are many photographic editing tricks that can be applied to it to produce a cleaner video with better quality sound before transferring it to DVD. After the information has been edited, it must be compressed to a format that will make the file small enough to occupy a single DVD.
DVD is based on the MPEG-2 format but videos can be converted to a range of formats for the internet and mobile devices. Burning home movies onto a DVD using MPEG-2 format creates a disk that can be played back in a standard DVD player or viewed on the computer screen.
Marc Miller is the co-founder of Vinyl To Digital, the UK’s only Audio and Video conversion service where he has been providing a VHS to DVD Service for the last five years. Vinyl to Digital is based in the Midlands area of England, UK.
For the past couple of years, the battle for competing TV screen superiority has been mainly between plasma screen TVs and LCD TVs. And to be sure, either would make a fine choice for the average television viewer. And in terms of sheer numbers sold, plasma TVs have outsold LCDs up to this point. But increasingly TV manufacturers, such as Sony, have been shifting away from plasma screens to newer technologies instead, and one of those is DLP.
DLP stands for Digital Light Processing, while LCD stands for Liquid Crystal Display. They both use completely different ways to create the image on a television screen, although the final product is remarkably similar when viewed side by side. There are only a few minor differences to be considered and here they are:
LCD screens tend to be best when viewed at a direct angle to the TV, in other words, pretty much right in front of it. Older LCD screens especially were hard to view as the viewing angle increased to the side, but many of the newer sets have improved on that issue, although it is still more narrow a field of view than that of DLP screens.
LCD monitors do display bright colors very well though, especially in a room that already has bright ambient lighting. They probably accomplish this better than any other display technology, so if you will be watching the screen in a brightly lit room, LCD may be your best choice.
DLP screens boast higher refresh rates, so the screen is drawn more often in the same period of time. What this means is that fast action sequences that are often found in movies and sports will appear smoother on a DLP screen than on LCD. So if sports is a large part of your viewing experience, perhaps DLP gets the nod here.
As far as price is concerned, there isn’t a huge difference these days and both LCD and DLP TV prices are falling steadily as plasma screens are not as dominant as they used to be.
So which screen is best for you? That is hard to answer without you actually viewing both types of screen types side by side at the same time. It’s a good idea to visit a local electronics retailer in your area to make this comparison using some of the points mentioned above to color your buying decision as well. You actually will no doubt be satisfied with either screen type, but making the comparison in person will help you choose based on your own personal opinions.
Back in the olden days before flash memory cards and digital camcorders came on the scene, many people shot their own home movies using camcorders that stored information on small VHS and other cassettes.
These cassettes can then be removed from the camcorder and placed in a standard VCR for viewing on their television set. Sadly, VHS has become an obsolete technology and camcorders that use these tapes are no longer in production. As tapes age, they become more subject to breakdown caused by environmental factors and simple breakage. This is why more and more people are saving precious memories with VHS to DVD service.
The last thing anyone wants to lose their home movies. After all, these moments were special enough to prompt someone to grab the camcorder and film them. Today, there are services available that can take VHS cassettes and put the information stored on them onto a DVD. This is available as a paid service or one could do it himself at home.
The key to doing it oneself is having the correct hardware on hand. There are a couple of ways to go about it. One is to connect the VCR directly to a DVD-R and simply copy the contents of the VHS cassette. However, this is probably not the best route to take because many home movies have flaws in the video that can be corrected using today’s digital technology.
The next option is to have a video capture device and software that allows one to connect the VCR to a home computer. Once one has the tape set to play from the beginning, and the computer set to start capture as soon as the tape begins, it is a simple matter of starting the tape and allowing the capture video program to convert this into a digital file.
As soon as the video is converted to digital, there are many photographic editing tricks that can be applied to it to produce a cleaner video with better quality sound before transferring it to DVD. After the information has been edited, it must be compressed to a Only one type of small files that make up the DVD.
DVD, MPEG – 2 type and the number of video formats and mobile devices based on the Internet can be converted. Burning movies on standard DVD player or computer screen, DVD playback and the MPEG – 2 format to create the disk.
In the modern television electronics filed, the landscape is constantly changing and what was true just a few months ago may not be true now. As HDTV broadcasting stands to come into it’s own as this year progresses, there are several surrounding technologies that are on the fast track for improvement as well.
One of those is LCD monitors used for displaying the HDTV signal. Actually there are three major competing screen technologies at this point and they all have certain unique characteristics that can influence your buying decision. Of course, any of them would be a major improvement on the old CRT displays that have been in prevalent use for many years now. These three monitor types are LCD, DLP, and plasma screens.
For the sake of this article, let’s discuss LCD monitors and how manufacturers are making improvements that are diminishing the drawbacks that have been associated with LCD TVs.
The main advantages of LCD monitors is Their thin, light, appropriately, and an amazing variety of colors display, which makes them a favorite of many viewers say. Also, monitor, and they take can be used. However, the angle of the shortcomings of some complaints and the high costs associated with the large screen size, limited view picture.
Um, the problem of large producers with an LCD LCD TV, and boasts the latest fixmuch improved viewing angle. Previously, you pretty much had to be sitting right in front of a LCD monitor to be able to get the best picture and as you moved sideways away from the center of the TV the clarity and sharpness diminished fairly rapidly. That irritating situation has been much improved in the latest LCD monitors and now you can view them easily and comfortably from as much as 150 degrees to either side.
On the price front, that too has been improved as the cost for larger Large screen sizes 40 inches and released at the present time, we, LCD is still much faster than the smaller size was to reduce the price of the monitor. I'm in a better world for LCD TV as the input, rather than some of the most frequently requested features, it is very good for their own reasons as well, but also has been improved to the same extent.
Outdoor rock speakers are in a different league of speakers altogether. While most other speakers would only provide sound amplification at best, these units bring together sound amplification, excellent music sense and of course, a rugged design to withstand extremities in the weather. All these features combine to deliver a power packed and a musical evening, irrespective of whether it is cold or raining outside.
The basic purpose of these sound units is to provide the best fidelity sound even in bad weather conditions. Almost immediately, these speakers would find use in open air concerts held by musicians. In such concerts, musicians would want every member in the audience to groove to their music and these speakers do the needful in getting every chord played to them. About 99% of open air concerts use outdoor rock speakers for sound amplification.
For starters, the design of most of them is different. While most other speakers would be covered with a convenient black or a grey colored dashboard, these ones are at best considered natural in the way they appear. They look like a rock carving, and quite obviously then, they are known as rock speakers. Did you know that Granite Grey Rock Speaker is one of the best outdoor speakers around?
Of all the features, one of the most important one is that it provides sound clarity even in the roughest weather conditions. The ones used in open air concerts are industrial-grade and an individual may not really need rock speakers of large sizes to use in their residential garden or backyard. The Granite Grey Speaker for example, can be placed anywhere on the ground and it would still provide sufficient sound amplification.
Most of these speakers are available in the price range of $80-$130, proving that the Internet is full of speakers for individual use. Industrial grade rock speakers are hard to find. To locate an industrial grade speaker, an individual probably has to speak to the For more information about the speaker manufacturer for more information. Outdoor speakers, garden or city you are really interested in the gale that's worse, the eye can.
In recent years the number of options available to those in the market for a new television has certainly expanded. CRT televisions continue to be available and offer good quality viewing at an affordable price. DLP came along and offers larger screens that are accompanied of course by somewhat higher price tags. Plasma and LCD are currently the darlings on the show room floor and are able to offer large screens with a slim profile but again, despite price reductions in the past couple of years, require significantly more cash to procure one. More recently, the initial OLED television offerings hit the market for yet another option.
With an increasing number of technologies available, TV size, profile, and pricing stretch across a wider spectrum as well for today’s consumers.
Profile
CRT televisions have slimmed down a bit in recent years but still have the thickest presence; 18 inches or so although Samsung introduced a model which has a profile under 14 inches. A 32″ model, generally the largest for CRT TVs, can be had for under $900. CRT TVs are still at the top of the market for bulkiness while at the bottom for purchase price.
At the other extreme, Sony’s XEL-1 offers consumers a digital flat panel HDTV with a profile of 3 mm. This great new technology comes with a price however; around $2499 for an 11 inch screen. Not something you would place in your living room for the family to gather around. Of course, taking things a bit further, Sony has announced it will be rolling out a second OLED in the near future; another 11 inch screen which will be only .3 mm in thickness. Pricing and other details aren’t yet available but again cost would be expected to be at the top end of the scale for this size television leaving them as the thinnest and yet most expensive TV per inch available to consumers.
Screen Size
The largest displays continue to be plasma televisions. It’s been some time now since Samsung, Panasonic, and others showed off their 102″, 103″ and 108″ displays but clearly with price tags over $69,000 and weights around 500 pounds, these aren’t on the market for the general public. Certainly, 65″ plasma televisions can be found on display in large retail stores for over $7,000 but the more interesting recent development for the average consumer who desires a huge screen for their home theater is Mitsubishi’s new 73 inch DLP TV. This is a new extreme for DLP. Despite its large screen size this television weighs in around 100 pounds and is less than 18″ thick; no thicker than many smaller CRT TVs. The better news is that these large screen sets can be found for under $2200.
Pricing
Pricing clearly rises with increased screen size, thinner profiles, and newer technologies. Luckily as technologies mature, production techniques evolve, and volume increases, prices tend to creep lower. Currently CRT TV’s are the most Although you can use to find out on the big screen Mitsubishi DLP, however, moved to $ 30 per inch for a new look under the leader-inch-thin OLED revenues of $ 227 is a new drug.
Over the size of an outdoor map, profile and price, but it is also very different options to meet the needs of consumers is to seek the Republic of
HDTV has become an instant hit. Millions of people are going for high definition. The question is why? Is it because it is the latest technology or is it the best technology? Don’t buy a HDTV until you read this article.
Television technology has not changed much over the years. Take a look and we do see major improvements, but how long did they all take?
Twenty years of roughly the same television, then LCD came on the picture! Out went CRT televisions, and in came LCD televisions!
This route to television is a welcome one, and for many reasons. Yes, there is other technologies such as LED and even plasma, however, the benefits of LCD is immense.
Now we have HDTV, which stands for high definition television. People have said that HDTV looks like a picture. And when you view a HDTV television, you will find that it is indeed high definition, and does look like a picture.
To get this, there are 2 main formats you want to consider. The first is 1080p, and the other is 720p. There is another type of model that has an i, instead of a p, however, the i or interlaced version could flicker with gaming consoles and computers, so I suggest sticking with the p (progressive) models.
It is easy to get confused in technical know how, so I want do that here. One thing I can say though, is that HDTV is here to stay, and for good reason.
The upgrade in this technology, makes it ready for the As well as new technology, computer equipment, and any other kind of television work has been Nintendo Wii.