Television Projection Reviews / lcd projection tv

Samsung HC-R4755W 47-Inch HD-Ready Rear Projection TV

• 47-inch projection HD-ready CRT TV; measures 44.1 x 37 x 21.9 inches (WxHxD)
• Built-in HD/Digital tuner (ATSC/NTSC) and 181-chanel NTSC tuner for standard broadcasts
• 16:9 widescreen picture aspect ratio
• Includes 3 composite, 1 S-Video, 2 component, 1 DVI, and 2 RF inputs
• Two stereo speakers, 15 watts apiece (30 watts total)

Read more…

Bookmark It

Hide Sites

CRT or tube television suited the needs of viewers for several decades. Plasma and LCD came along in more recent years competing for the affections of television buyers. These newer entrants on the market offer a slim design and the ability to enjoy a theater like experience with enormous screens that don’t require an entire room for set up.

For the millions of consumers still holding out on purchasing a new plasma or LCD television despite their falling prices over the past couple of years, there will of course be other technologies evolve in the not so distant future to further complicate the decision when selecting a new set. Becoming acquainted with at least the names of a few of the technologies on the horizon may help prepare buyers for what is sure to follow in a crowded marketplace.

OLED

OLED is the acronym for organic light-emitting diode. The technology was originally developed years ago by Eastman Kodak and is used for both light sources and television. Sony is one of several companies hoping to bring this technology to market. Images are produced via the electro-phosphorescent properties of certain organic materials. No back light is required in an OLED television. In addition to television, OLED may be used on small screens such as on cell phones, MP3 players, and digital cameras.

An OLED television (active matrix) will use less power than the average LCD television. They offer a superior range of color and brightness as well as a wider viewing angle. These televisions are lighter weight, thinner, and yet more durable. The most significant drawback to an OLED television in this early phase is their lifetime. The longevity of some of the LEDs (the blue component) is only 3,000 to 5,000 hours at this time. Once manufacturing technology advances are made, it is anticipated that OLED televisions will have a much more competitive lifespan.

SED

SED is a surface conduction electron-emitter display, a technology reportedly being pursued primarily by Toshiba and Canon. SED uses an electron emitter for each subpixel to light up the phosphors in the display and operates similarly to a CRT display. Unlike a CRT television however, SED provides a much thinner and flatter screen.

An SED television is said to have a long working life, with only a 10% reduction in emitters after 60,000 hours. They use significantly less power than traditional LCD and plasma screens and possess excellent contrast ratio and brightness. Unlike LCD, an SED television does not experience lag (blurring during fast action scenes) and provides a 180 degree viewing angle. Like early plasma sets however, an SED television may be at risk for burn in.

Laser based Television

Mitsubishi may be unveiling its new laser based HDTV models by the end of the year.

The television is a slimmed down rear projection model that will reportedly rival the space saving design of plasma and LCD screens. Said to be only 10” deep they should not be too imposing in any room. It is also anticipated that they will be lighter in weight, due in part to their lightweight plastic screen versus traditional glass.

According to the manufacturer, other attractive features include improvements in picture quality. These sets are said to offer better color content and blacker blacks than current technologies. In addition, this new laser based television reportedly consumes significantly less power and is expected to be priced well below that of similarly sized plasma or LCD screens.

FED

Another potential leader for the future is FED (field emission display). Sony is currently behind the FED push.

FED television is said to operate more like a CRT set but offers the flatter, thinner display like LCD and plasma. They use a more efficient emitter (carbon nanotubes) and can therefore create a higher resolution picture than an LCD, use significantly less power than a plasma, and display fast motion without blurring.

The good news of course is that the evolution of television technologies should present some options that offer outstanding viewing and yet are affordable for the average consumer. Only time will tell which technologies will actually reach the market and whether or not actual performance will match current expectations.

Author: Christine Peppler

Television Projection

Bookmark It

Hide Sites

If you’re set on getting HDTV, then choose the best buy HDTV. It is a fact though that picking a unit that trumps the rest is never easy. The HDTV you just saw on an ad may not be the best one for you. Here are some things to consider before buying your HDTV:

Basic Information

You can’t buy the best HDTV if you don’t even know what HDTV is. The surest way to find the best of anything is to learn as much as you can about them before paying. HDTV is the product of new technology that allows you to view television shows and DVD in high and clear resolution. It would seem much like seeing the real thing on TV except that images are still two dimensional.

Some areas however are not good places to own an HDTV set. You only get to enjoy great resolution if the shows that you watch are also high definition. Many shows are still in the arena of standard definition. If this is the case, you’ll simply end up having a useless and expensive box with bad pictures. You can determine the best HDTV to buy only if you first determine the appropriateness of an HD unit in your situation.

HDTV or HD-Ready

If an HDTV is not the best choice for you, don’t despair. You still have another alternative. You may instead choose to get an HD-ready set. HDTV typically functions with a tuner that is already built-in and an antenna. An HD-ready set on the other hand would need a separate tuner or box so it can convert digital signals to images. The good thing about having an HD-ready set is that standard definition shows still look great in them.

LCD or Plasma

You would have to choose between a plasma or LCD screen. There is a lot of disagreement over the best buy HDTV when it comes to this consideration. In general, plasma may be a better choice if the room is dimly lit, the TV room is spacious and the TV itself is big. An LCD screen on the other hand would be great if the TV room has clear lighting, the room is cramped and the TV set is not too big. If you want durability, LCD beats plasma.

Aspect Ratio

The aspect ratio of a screen should also be part of your considerations. A lot of new HDTVs come in the 16:9 ratio. Old TVs have a 4:3 ratio. The screen proportion of your choice can affect the way you view a show or movie. Shows set for 4:3 will result in black sides appearing in a 16:9 HDTV set. This isn’t a concern though is you prefer to watch DVDs that typically have widescreen selections.

Rear Projection or Direct View

Old TVs still have rear projection. This means images come out through the process of reflection. TV sets that do not function under the principle of mirror reflection simply show images directly on the screen. HDTV with direct view normally has clearer shows.

Picking your best buy HDTV can be a bit tricky. All you really have to do though is to determine your preferences and whether or not an HDTV is appropriate for you. If you are still at a loss, consider reading HDTV consumer reviews.

Author: Daniel Mayor

Bookmark It

Hide Sites

If you are thinking about the purchase of an LCD projector there are some important factors that need to be considered. You will need to determine how, where and when you will use it. Will you use it in your home or for a business application? With the growth of Home Theater Systems many consumers are choosing to opt for an LCD projector. LCD projectors are becoming smaller and more portable every day and can be the integral part of any business meeting. LCD projectors and laptop computers, DVDs, Camcorders, and other video sources work well together in many formats.

The cost is one of the most important factors with today’s economy. The LCD projector is not a stand alone device. You will need to buy a dedicated screen for the image display. You will need to get the correct video or computer cables that will be necessary. The projector’s lamp and its brightness is a critical factor in the determination of the correct projector for you. If you will be traveling for business you may want to have back up cables and projector lamps available, just in case. LCD projectors may be getting smaller and more portable but they are still fragile. If you will be traveling for business you should invest in a good LCD projection case.
Many cases are light weight and come with wheels attached for easy mobility.

With all these considerations in mind let’s look inside the projector to see what makes it work and the difference in performance. Some of the technical terms to know a little about when shopping for LCD projectors are: resolution, aspect ratio, brightness, flexibility and contrast. All of these relate to the image quality. If you bring the projector home and find out that it does not meet the standards that you thought it would it may end up being a costly mistake.

The resolution of the projector is important. If you will be using it with your laptop it is best to match the resolution so that the signals will be compatible. A projector’s resolution is the amount of pixels it has to create an image. The pixel is the smallest point in an image. The higher the resolution the more pixels and the sharper more defined the image will appear. The resolution is displayed with two numbers such as – (854×480 low resolution) or (1920×1080 high resolution). The first number represents the number of pixels that are in the horizontal row of the image. The second number represents the number of pixels in a row going vertically. The higher the resolution the more the projector will cost.

The higher the resolution the more superior the image quality will be. If your intentions are to relax at home and watch DVDs you really don’t need a projector with an extremely high resolution. If you will be using it with a laptop for a presentation with a lot of text and graphics a higher resolution projector is recommended.

The brightness of the projected image is determined by the projectors output and lamp specifications and the reflective surface of the screen that the image appears on. Brightness is measured in lumens. The higher the lumens a projector can produce the brighter the image will appear. The light level in the room figures in
the brightness scenario. A room with low ambient light and a bright projector will help decrease the amount of contrast in the image. Room size and the distance from projector to screen will also come into play with the brightness of the projected image.

The contrast of an image is the amount or ratio of bright white to a deep black hue that makes up the image. A high contrast projector is best used for video or DVD formats. They deliver a rich, highly color saturated image with good shadow definition. A higher contrast will give the image depth and dimension. A projector with high contrast is best suited for Home Theater Systems where videos and DVDs can come to life. Using a high contrast projector is a waste if you will be using it for business showing simple text or graphs.

The aspect ratio describes the horizontal vs. vertical rectangular shape of the image on the screen. There are two standard aspect ratio formats. They are 4:3 used for standard TV and 16:9 used for HDTV. This calculated 4 units of width for every 3 units of height. However, you will find that many DVDs and videos come with many different aspect ratio formats and will not always fill in the whole rectangular image. There is no one solution or fix to this problem. First you must decide on what formats you will view the most and go with the knowledge that the downside of the image is marginal.

Other not so technical features that you may want to incorporate into you LCD projector. A zoom lens will be useful when setting up the projector for multiple functions in a variety of room sizes and settings. The lens shift is also useful. For the optimal image the projector should be at a height that is as close to the center of the screen that you are projecting onto. The lens shift will move the projector lens left, right, up and down without having to move the projector. If centering the projector to the screen is not an option. If your projector has it you should use keystone correction.

The projector using keystone correction internally corrects the difference of the angle between the height of the screen and the height of the projector. Moving the projector in some meeting rooms is impossible or must be dealt with prior to the presentation.

There also may come a time when you might want to hook up a second computer or DVD if so you must check out the availability of multiple external ports. Check to see if the projector has a built in speaker or look for ports that will give you the capacity to plug into an external system if need be.

One more factor is weight. LCD projector comes in all shapes and sizes. If your business takes you on the road you will need a projector that is portable and easy to set up and breakdown. There are now projectors that weigh less than 5 pounds. The lamp and the lamp housing are the main hold ups in shrinking the projector much further.

The lamp and its lamp life should be considered before the purchase of any projector. An LCD projector lamp is the most important portion of the projector that you will have to replace at one point or another in the lifespan of the projector. You can find lamps that have a long lifespan of 2000hrs. If you use your projection daily that time will disappear quickly.

Some projectors come with multiple lamp modes. In the standby mode the projector may still be turned on while the lamp is off. This mode is useful if your meeting is in one room and your lunch is in another room. The lifespan of the lamp can be extended using this mode. All you have to do when returning from a break is to switch the lamp into active mode. There are also projectors that have a secondary mode. In the secondary mode the lamp is not projected at % power. This mode can be used in a smaller room or setting where distance and brightness is not the top concern. The third mode should always be used when you are finished using the projector. This is the fan mode. You may laugh but this is an important mode. If you turn the projector off without giving the fan time to cool off the lamp may cool too quickly, resulting with a cracked lamp. Turning the projector on and off to quickly is not good for the lamp or the projector itself. Both of these action are not recommended if you want to have your new projector around for awhile.

If you take some time to do some research before you invest in an LCD projector you will end up with a better product to use and enjoy. I hope that the above material helps you get started on the road to your new projector.

By: peterc35

By: peterc35

— Big Screen TV, DLP HDTV, DLP HDTVs, Flat Panel Television, Flat Panel Televisions, Flat Panel Tvs, Flat Screens, Flat Screen Tv, FPE1506DV, Hd Tv, Hdtv, HDTV monitor, HDTVs, Hdtv Televisions, Home Theatre, Home Theatre System, Lcd, LCD monitor, Lcd Screens, Lcd Television, Lcd Televisions, LCD TV, Lcd Wall Mount, Mitsubishi 3D, Mitsubishi 735, Mitsubishi WD-65735, Plasma Tv, Projection HDTV, projection television, Projection Tv, Rear Projection, Rear Projection Television, Rear Projection Tv, Samsung DLP, Samsung HL-T5076S, Samsung HL61A750, Samsung HL67A750, Sony bravia, Sony WEGA, Television, Television accessories, Television Projection, Televisions, widescreen HDTV

Bookmark It

Hide Sites

Televisions previous to the Plasma TV explosion used the (CRT) cathode ray tube to give users the ability to watch television. CRT televisions works by shooting out a beam of negative charged particles called electrons into a large glass tube. These negative electrons

For the past 75 years, the vast majority of televisions have been built around the same technology, the cathode ray tube (CRT). In a CRT television, a gun fires a beam of electrons (negatively-charged particles) inside a large glass tube. The electrons illuminate phosphor atoms inside the tube (screen), this allows the TV picture to be produced by illuminating different areas of the phosphor coating, this is what gives you the CRT television.

Now welcome to the new face of television, Plasma TV. Plasma has taken the home theater market by storm because of their amazing picture quality and very thin design. The idea of plasma display panels began in 1964 at the University of Illinois. The first displays were very primitive using only points of light created in the laboratory. As time went on digital processing, and other technology, made vivid plasma displays a reality.

Plasma televisions use a much different type of technology thatn CRT models, they use something called pixels. Using a video signal the pixels on the flat screen light up with a high-energy beam of electrons that are separated into the 3 primary colors, red, green and blue. From the illuminated fluorescent lights pixels you get the full color spectrum that produces a full range of colors that give you the image on the screen. Each pixel on the screen has three fluorescent lights in it, a green, red and a blue fluorescent light. Each fluorescent light in the pixel can produce 16 million colors, giving you amazing colors and overall picture quality that you can’t finder in regular CRT televisions.

Another feature that you can’t find in CRT TVs is the widescreen design found on Plasma televisions. The (16:9) aspect ratio is the same dimensions used in movie theaters. This feature gives Plasma flat screen high definition television models a cinematic feel, that is great for watching feature films, concerts, Monday Night Football or anything else you can imagine.

And unlike conventional television models, there are no scan lines on plasma televisions, so the picture is much sharper. The viewing angle is far superior than CRT, there is 170 degree viewing angle so you can basically watch the TV from any area in the room. As I mentioned before Plasma Tvs are very thin, only 3.3 inches in width. This makes them perfect for hanging on your wall, freeing up space in your home. Just like a picture frame, you can now hang your television on your wall!

So who manufacturers these thin TV displays? You can choose from numerous brand names which I’m sure you are familiar with such as, Sony, Sharp, Hitachi and Samsung to name a few. Plasma isn’t the only technology available if you are a HDTV buff, you should also check out LCD televisions and rear projection TVs.

And if you want to find a cheap plasma TV, check out the discount deals available through internet, particularly Amazon.com and Ebay.com. Those 2 online merchants are trusted and can offer not only new, but used and refurbished models for even bigger savings.

Author: Richard Gazzo

— Big Screen TV, DLP HDTV, DLP HDTVs, Flat Panel Television, Flat Panel Televisions, Flat Panel Tvs, Flat Screens, Flat Screen Tv, FPE1506DV, Hd Tv, Hdtv, HDTV monitor, HDTVs, Hdtv Televisions, Home Theatre, Home Theatre System, Lcd, LCD monitor, Lcd Screens, Lcd Television, Lcd Televisions, LCD TV, Lcd Wall Mount, Plasma Tv, Projection HDTV, projection television, Projection Tv, Rear Projection, Rear Projection Television, Rear Projection Tv, Samsung DLP, Television, Television accessories, Television Projection, Televisions, widescreen HDTV

Bookmark It

Hide Sites