Unless you have been on a desert island for the last few years, you will be aware of the rise of the LCD HDTV format. There are advertisements for them everywhere and you probably know of several friends that have them already. If you have not yet considered buying a LCD HDTV, then perhaps now is the time that you should. Prices are getting lower and if you do your research you can get a great deal.

It is not until you see a LCD HDTV in reality that you realize the difference in visual quality to standard televisions of the past. The market data seems to indicate that LCD HDTV’s are here to stay. In 2007 sales of LCD televisions surpassed the standard format for the first time.

Should you decide to purchase a LCD HDTV then you probably have a few queries. This article will help you understand the most commonly asked questions about them. LCD HDTV means Liquid Crystal Display High Definition Television. These televisions are thinner and flatter than the standard models of the past and are comprised of a fixed number of colors or pixels that shine in front of a light source. High Definition Television is a digital system that has a much higher resolution than standard models.

So as you can see, the LCD HDTV provides a far superior television than the more conventional systems. In comparison to the standard television models there are a great deal of benefits. A LCD HDTV is thinner and flatter and this allows you to place one in a small room without compromising space. Many people like to fix the LCD HDTV to a wall as this helps to maximize the living space even more.

One of the great things about these HDTV’s is that they provide theater-like visual and sound quality. They are almost always in wide screen with the aspect ratio set at 16:9, which is the same as a movie theater screen. All HDTV’s are also capable of using Dolby Digital Surround.

Perhaps the best feature of an LCD HDTV is the picture quality. When you see the picture for the first time you are struck by the sharpness of the picture and the amount of detail in comparison to a standard television. The images in a HDTV are twice as sharp as that of a conventional model. This is because it uses a greater lineal resolution that makes the image appear more lifelike and provides richer colors. This technology also greatly reduces interference as the HDTV signal does not display lines or snowing on the picture.

Should you purchase a HDTV and then plug it in at home you may be disappointed to only get a standard picture. In order to receive the full benefits of an LCD HDTV you will need to get a HD receiver and the HD channels.

The most important factor beforehand is finding out whether you can get a HD source. In order to receive the HD signal you need to check the satellite or cable provider in your city for further details.

Assuming this to be the case, you will then need to purchase a HD box so that you can start to receive the high-definition signal. Most providers are launching new versions of popular channels in high-definition all the time so once you are set up then you will be able to enjoy the complete visual and audio experience that the LCD HDTV provides.

Are you still using that dated old “tube” television set? Are you drawn to the electronics section at your local Best Buy where you walk slowly down every aisle fantasizing about watching an action packed thriller on one of those crisp, gorgeous devices? Are you baffled by the price ranges, and confused over the qualities? If that’s what’s keeping you from buying the television of your dreams, it’s time to do your homework. The two biggest questions about the television market today is, “what’s the difference between the plasma television versus the LCD?”

Plasma Television Versus The LCD

There are a few important things to compare when deciding which type of set to purchase. Plasma TVs are the current size champions, particularly when comparing TVs that consumers can easily purchase. Screen size, viewing angle, screen refresh rates, burn-in or stuck pixels, and product life-span are all areas that you want to pay close attention to when shopping.

When comparing the plasma television versus the LCD, start with size options. With a plasma, screen sizes range from 32 inches to 63 inches. Larger plasmas, like a 103 inch unit, are in production, but are still expensive for consumer use. The LCD sizes range from 13 inches to 45 inches. As with plasma, there are larger LCD TVs made, like a 100 inch display, but they are not readily available or affordable at the consumer level. Moving on to viewing angle, LCD TVs have the advantage here, but by a small margin. Your viewing experience is not going to be ideal at 160 or 175 degree angles. LCD TVs used to have a problem in this area, primarily because LCD’s were originally meant for single person computer monitors. Plasma displays refresh and handle rapid movements in video well. LCD TVs were originally designed for data display, and not video.

In essence, refresh rates had to be improved. LCD TVs with refresh rates below 16 ms or lower (5-15 ms) show very few noticeable artifacts. LCD TVs are now available with refresh rates as low as 5ms. Plasma TVs can suffer from burn-in produced by static images. After extended periods, stationary images “burn in” and produce an after-image ghost which remains permanently on the screen. With technologies such as ‘pixel orbiter,’ new plasma TVs have addressed burn-in and significantly reduced the issues of older models.

LCD TVs do not suffer from burn-in, but can have what they call, “retained pixel charge” which may also produce ghosting. Stuck pixels are also possible with an LCD display. Taking into consideration the latest plasma technology, this is less of an issue than ever before. If you plan to use a plasma TV for video gaming, some games with permanent ‘dashboards’ may still cause burn-in. Check user-manuals for available solutions by model. Another option to weigh when comparing plasma television versus the LCD, is the life span.

Plasma TVs have a reported half life of 30,000 to 60,000 hours. Half-life is the time it takes the lamp to fade to half its original brightness LCD TVs also have replaceable backlights, but the expense of replacing one when the time comes may be greater than simply replacing the entire TV Both Plasma and LCD technology should more than adequately satisfy most consumers.

The average tube has a half-life of around 25,000 hours. If the average American household watches an average of four to six hours of television a day, even a 30,000 hour lamp would give you easily over 16 years of use. Fortunately, when comparing plasma television versus the LCD, They are both great options, so find the one that suits your lifestyle.

LCD televisions are incredible, space-saving appliances. LCDs possess extremely thin, flat screens that can be mounted on a stant or even hung on a wall in your family or entertainment room. In the case of the latter, hanging an LCD television on a wall provides consumers with additional space in the room in which the television is placed; allowing much more space for furniture and decorating. Furthermore, many LCD televisions include the option to tilt and pivot their direction, allowing the viewer to easily adjust the screen to their preferences.

LCD (liquid crystal display) projectors usually contain three separate LCD glass panels, one each for red, green, and blue components of the image signal being fed into the projector. As light passes through the LCD panels, individual pixels (”picture elements”) can be opened to allow light to pass or closed to block the light, as if each little pixel were fitted with a Venetian blind. This activity modulates the light and produces the image that is projected onto the screen.

LCDs possess a number of advantages over Plasma televisions and standard television sets. Such advantages pertain to their cost effectiveness, their space saving capabilities, and their image producing capabilities. In fact, in the future, the market is likely to see a rise in the sale of LCDs that surpasses the selling of both Plasma and standard television (SDTV) sets; such a rise in the sale of LCDs will directly parallel the increase in technology.

One benefit of LCD is that it has historically delivered better color saturation than you get from a DLP projector. That’s primarily because in most single-chip DLP projectors, a clear (white) panel is included in the color wheel along with red, green, and blue in order to boost brightest or total lumen output. Though the image is brighter than it would otherwise be, this tends to reduce color saturation, making the DLP picture appear not quite as rich and vibrant.

However, some of the DLP-based home theater products now have six-segment color wheels that eliminate the white component. This contributes to a richer display of color. And even some of the newer high contrast DLP units that have a white segment in the wheel are producing better color saturation than they used to. Overall however, the best LCD projectors still have a noteworthy performance advantage in this area.

LCDs are more energy efficient as well. LCD projectors usually produce significantly higher ANSI lumen outputs than do DLPs with the same wattage lamp. In the past year, DLP machines have gotten brighter and smaller–and there are now DLP projectors rated at 2500 ANSI lumens, which is a comparatively recent development. Still, LCD competes extremely well when high light output is required. All of the portable light cannons under 20 lbs putting out 3500 to 5000 ANSI lumens are LCD projectors.

LCDs are more cost effective; this does not mean that they are less expensive than other television brands, but they are, however, money saving in the long run. Due to the fact that LCDs require less electricity to operate, the long term savings on electricity can really add up. The reason that LCD televisions are cost effective is because they do not require florescent lighting to work, and their flat shape produces less heat. Thus, if consumers are looking for a television that can save them money on their monthly electric bill, then LCD television is definitely the way to go.

LCD televisions are praised for their ability to produce sharp, crystal clear images. In fact, the crystal clear imagery produced by LCDs can be attributed to the fact that their screens are literally comprised of crystals. Every crystal either obstructs or allows light to pass through it and such lighting produces the images seen by the viewer on the screen. Furthermore, because LCD screens are flat, there is very unlikely that glare from other lights in the room will present a problem.

Directly related to the clearer pictures, is the fact that LCDs produce sharper images and consumers will experience far fewer occasions in which eye fatigue occurs. Many consumers enjoy watching television for several hours at a time; thus, the clearer images and less glare that are provided from the screens of LCDs can prove to be quite beneficial in alleviating eye fatigue.

Finally, for those individuals that are environmentally conscious, LCDs offer less radiation emission as well as a lower frequency of electromagnetic field emissions. Electronic magnetic fields have been scientifically associated with a number of health risks, including cancer.

Television and video are terms that are sometimes used interchangeably, but differ in their technical meaning. Video is the visual portion of television, whereas television is the combination of video and audio modulated onto a carrier frequency (i.e., a television channel), so that the signal can be delivered to the receiver (TV or computer/PVR with a TV tuner). The DVR resolutions differ from the way in which a video is recorded.

Analog television

Analog television in NTSC, PAL or SECAM formats, analog cable, or regular VHS tapes use a signal that is fed directly to the electron beam within the television set. There are a number of details on how this is done, but in essence each line in each frame corresponds to a specific fraction of time within the signal.

To record an analog signal a few steps are required. A TV tuner card tunes into a particular frequency and then functions as a frame grabber, breaking the lines into individual pixels and quantizing them into a format that a computer can comprehend. Then the series of frames along with the audio (also sampled and quantized) are compressed into a manageable format, like MPEG-2, or WMF, usually in software. Some TV tuner cards like the DVR-250/350 or the TiVo chip deliver an MPEG-2 or other compressed stream directly to the computer, performing both the frame grabbing and compression in hardware. This greatly reduces the load on the CPU allowing an overall cheaper implementation.

Digital television

Digital television contains audio/visual signals that are broadcast over the air in a digital rather than analog format. Recording digital TV is generally a straightforward capture of the binary MPEG-2 data being received. No expensive hardware is required to quantize and compress the signal (as the television broadcaster has already done this in the studio). The MythTV DVR supports both international DVB signals and American ATSC signals while the TiVo Series 3 supports only the ATSC signals. In the U.S., the FCC attempted to place a road-block before digital DVRs with its “Broadcast flag” regulation. Digital video recorders which had not won prior approval from the FCC for implementing “effective” digital rights management would have been banned from interstate commerce as of July 2005. The regulation was struck down on May 6, 2005.

DVD-based PVRs available on the market as of 2006 are not capable of capturing the full range of the visual signal available with high definition television (HDTV). This is largely because HDTV standards were finalized at a later time than the standards for DVDs. However, DVD-based PVRs can still be used (albeit at reduced visual quality) with HDTV since currently available HDTV sets also have standard A/V connections.

Satellite or digital cable

Recording satellite or digital cable signals on a digital video recorder is more complex than recording analog signals or broadcast digital signals. This is so because the MPEG-2 or MPEG-4 stream is usually encrypted to prevent people from viewing the content without paying for it (usually via subscription).

The satellite or cable set-top box does two things. First, it decrypts the signal. Second, it decodes the MPEG stream into an analog, DVI, or HDMI signal for viewing on the television. In order to record cable/satellite digital signals you must get the signal after it is decrypted, but before it is decoded (between steps one and two); this is how DVRs built into set-top boxes work.

your biggest thing to consider when purchasing a television was the size of the television. This was usually determined by your budget and . When those needs were the project was trouble-free. Purchasing a TV in the present market is a much more complex task: there are LCDs, Plasmas, and projectors to decide from. Ahead of a purchase can be completed, to begin with you must recognize what your options are as well as how they match against each other.

LCD TVs and Plasmas operate differently to achieve the same required effect: providing a sharp, clear, highly responsive image. lcd television have crystal cells that tighten and unwind appropriately as they are sparked via an electronic signal. A intense backlight suffuses the cells and as they rotate they sort out all the colours in the spectrum except for the required one. Plasma televisions have millions of pixels that, once activated, release gases that work to produce a certain colour in the red, blue and green bands enclosed within the pixels.

Until recently Plasma screens were notably superior a variety of views. Because of the winding and unwinding activity of the cells in LCD televisions, sharp moving video, specially sports and action films, frequently show a trailing appearance as the images changed and moved. Plasma screens do not do this because every pixels is activated individually. Plasmas produce undistorted imagery at sharply-angled viewpoints, unlike LCDs, whose images can appear fairly corrupted when viewed at similar angles. Plasma screens also exposed much deeper colours than LCD televisions, with particularly deep blacks.

Enhancements and upgrades in the LCD design have allowed it to match Plasmas in zones that it had shown deficiencies. lcd television also have many obvious benefits over Plasmas. Plasma televisions may have at first been able to show off the largest screens, but they by no means have the smallest. LCD screens now have screen sizes that can virtually match the biggest plasma televisions, and they can be produced so small that they equip a lot of telephones. They’re also more portable. Plasmas are awfully heavy and normally thicker televisions, which makes it not easy to move them. They also can’t be mounted to weaker ceilings or walls due to their weight.

Plasma TVs do have disadvantages. As they contain gases, they are also affected by air pressure. As a result they don’t act as effectively at high altitudes. lcd television, though, are not affected by this. As a result, they’re used in generally all airlines and are favored in a lot of high cities. Plasma TVs what’s more experience a burn-in effect, which happens if a still image is left on the screen for a long period of time. This can come about when a movie or game is left on pause for an extended period of time, or if the panel is being used to transmit computer imagery. Subject to the extent of time the image is left on the screen, the burn-in can be serious and permanent.

LCD televisions are steadily becoming the obvious choice. The crucial issue to most customers, the cost, has smoothed out so that Plasma panels aren’t the guaranteed best-buy. The enhancements to the technology and the price have let LCD televisions to turn into the dominant format in the television market.

lcd television are improving and evolving central in every dimension – factually: they are at this moment starting to put forward 3D screens. Furthermore, they can work much longer than Plasma television screens. Even though they have a tendency to be rated for equal lifespans, the end of the Plasma television’s lifespan highlights the aspect at which it is partially as bright as it at first was, whereas the projected end of an LCD screen’s life is marked by the point when the backlight burns out. At these points a Plasma television will continue fading until the image is no longer visible, while the LCD panel’s backlight can be replaced.

And if you are not doing a Powerpoint presentation in multiple areas, projectors are no way as good as LCDs.