by: Bill Ransom
There are four types of rear-projection TV's available currently. These are the older CRT rear-projection, DLP rear-projection, LCD rear-projection and LCoS rear-projection. Most available today are HD ready and can display digital signals.
CRT Rear-projection : these are the projection TV's that have been on the market for years. CRT or Cathode Ray Tube technology is the same technology that your old TV set's used. There are three tubes in these projection TV's each for a primary color and they project the light onto the TV's screen. Since they require three CRT tubes these TV's are very big and deep. Most CRT projection TV's come in 50 inches or larger screen size. CRT rear-projection TV's are becoming extint and many companies do not make them anymore. They need to be adjusted frequently to keep the colors in line and the image quality and viewing angles are not as good as the next three rear-projection technologies.
DLP rear-projection : (Digital Light Processing) are based off of technology developed by Texas Instruments. They produce an image by sending light through a spinning wheel of color which then sends the light to almost a million small mirrors. These mirrors produce the image onto the screen. DLP rear-projection TV's have slimmer cabinets than CRT rear-projection TV's. The biggest complaint with DLP rear-projections are the "rainbow effect" many people see. Also the bulb that produces the light for the TV needs to be replaced usually every 8,000 viewing hours.
LCD rear-projection : LCD rear-projection's use a LCD screen which is projected unto the screen. These TV's like DLP rear-projection are slimmer than the CRT rear-projection TV's. Image quality on LCD rear-projection is not as good as DLP and viewing angles are not that large. Viewing an LCD rear-projection from the center position is recommended. Also many buyers complain that moving images are pixelated and I have seen this first hand.
LCoS rear-projection: is the newest technology of the four types of rear-projection TV's. Liquid Crystal on Silicon rear-projection TV's is basically a hybrid between an LCD rear-projection and a DLP rear-projection. In these TV's light shines through LCD panels and is then modulated through these panels by the liquid crystals. The liquid crystals do the job that the mirrors do in DLP rear-projection TV's. LCoS are touted as not having the "rainbow effect" and can be made thinner than the other rear-projection TV's. A downside to these TV's is the technology is still very expensive so many companies do not make them.
PRO'S:
PRICE
larger screens than Plasma or LCD displays
CON'S:
Depth of TV cabinet
image deficiencies such as the "rainbow effect" and washed out images in well lit rooms
viewing angles are inferior to Plasma and LCD displays
*In most cases a Plasma or LCD display will have overall better image quality than any of the current Rear-Projection Televisions on the market today. Projection TV's just cannot reproduce the contrast and color accuracy or saturation that the current Plasma Technology can achieve. DLP and LCD rear- projection and the newer LCoS tenchnology has all come a long way since the days of the CRT rear-projection television but cannot equal a good Plasma or LCD display. Plasma and LCD technology also have DLP and LCD rear-projection beat in the areas of viewing angles and being used as a computer display. While most new rear-projections can be hooked up to a Xbox or Playstation they are not meant to be computer displays where LCD Televisions where.
Where DLP and LCD rear-projection TV's do come out ahead is with Price per viewing inch. Do not get me wrong DLP and LCD rear-projection TV's are great and unless you are the type of person that will get upset if the images you are viewing are not perfect then a 50 - 60 inch projection television provides a superb viewing experiance by all means. If you are a HDTV junkie and need that perfect video image then go with a Plasma or LCD Display but remember you will pay alot more.
About The Author
Bill Ransom has been in the technology industry for many years as well as retail electronics.
http://www.flatscreenbuyers.com
|
Lens Flare - The Hidden Enemy Of Rear-Projection TVs
Lens Flare - The Hidden Enemy Of Rear-Projection TVs
by: Eli Aloisi
While one expects CRT-based rear projection televisions to deliver good black levels, there is a factor that can compromise black level performance in any rear-projection display.
This factor is something called lens flare. Lens flare is most commonly seen in photographs. It usually occurs when the photographer is shooting in the general direction of the sun. Bright sunlight enters the lens at an angle and bounces around inside the lens body. As it reflects off of the interior parts of the lens, some of it ends up getting on to the film, usually in the form of bright circles or shapes, broad smears of light, or lines.
Binocular, telescope, and camera lens manufacturers all try to make the inside of their optical assemblies as dark as possible and also add light baffles to try to waylay the misdirected light so that it does not spoil the image
Rear projection televisions...
Lens Flare - The Hidden Enemy Of Rear-Projection TVs
Projection tv > Lens Flare - The Hidden Enemy Of Rear-Projection TVs
Selling Your Home: Market/Sales Price
Selling Your Home: Market/Sales Price
by: Chris Cates
Whether you are planning to buy or sell a property it is important to become familiar with the terminology of real estate. In real estate the three terms that are commonly used interchangeably are value, cost, and price. Although, all are concepts relating to value, they are not the same. Let?s begin by differentiating between the terms.
Value deals with something that will happen in the future; whereas cost relates to past events, and the amount of money actually paid for the property is the price. Depending on circumstances, the value of a property may be the same, more than, or even less than the price. Several things determine the value of a property: the degree at which it satisfies a need, ratio of supply to demand, transferability, and whether a perspective buyer with need for the property can financially afford the property.
Value is a term, which should be used when speaking...
Selling Your Home: Market/Sales Price
Projection tv > Selling Your Home: Market/Sales Price
Polishing Your Sales Presentation
Polishing Your Sales Presentation
by: Dan Collins
Summer is here! It?s time to bring out your summer attire, take a vacation and reflect upon your achievements thus far this year. Look back at the past few months of your sales production . . . are you on target for all your sales goals for 2005? Are you making the sales from all your sales presentations?
You may be far ahead in some areas or behind in others. No matter what your sales production is today you certainly should have another look at what targets and goals you have developed in your game plan for 2005.
Are you using your strengths to their fullest potential? To improve your sales results, determine what has been working or not working. Then define where to concentrate your productive energies for the next two quarters in 2005 or the remainder of your compensation period.
The statistics say that 90% of the sale is made in the presentation. Many sales professionals need...
Polishing Your Sales Presentation
Projection tv > Polishing Your Sales Presentation
The Innovative Autobin - The Automatic Opening Bin
The Innovative Autobin - The Automatic Opening Bin
by: Veronica Pacey
If you are looking for a new-to-market, innovative and useful product within your home, the Autobin is it! The Autobin is a revolutionary automatic opening bin. It has a built in infrared sensor on the lid, so when you place you hand near the lid of the bin, it opens, and shuts again after about 8 seconds, allowing you to drop your rubbish into the bin without the need to touch it at all. However, if you need more time, say if your peeling eggs or emptying leftovers into the bin, you can override the automatic feature by pressing the open or close button on the front panel.
If used in its automatic setting, the touchless Autobin is incredibly hygienic, and helps to prevent the spread of germs within the family household, hospitals, public toilets, offices, airports, care homes, or wherever you need a bin. Hospitals around China and Singapore are using the Autobin to help...
The Innovative Autobin - The Automatic Opening Bin
Projection tv > The Innovative Autobin - The Automatic Opening Bin
LCD Projectors - The Jist
LCD Projectors - The Jist
by: Eli Aloisi
An LCD projector is a device utilized for displaying video images or data. They are the modern equivalent to the slide projector and overhead projector used in the past.
LCD (liquid crystal display) projectors usually contain three separate LCD glass panels, one each for the red, green, and blue components of the video signal. As light passes through the LCD panels, individual pixels 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.
With a lens that "projects" the image on any flat surface and does not require large "furniture" (like a big TV would), LCD projectors tend to be smaller and much more portable than older systems. The best image quality can be accomplished with a blank white or grey surface to project on, and for this...
LCD Projectors - The Jist
Projection tv > LCD Projectors - The Jist
Polishing Your Sales Presentation
Polishing Your Sales Presentation
by: Dan Collins
Summer is here! It?s time to bring out your summer attire, take a vacation and reflect upon your achievements thus far this year. Look back at the past few months of your sales production . . . are you on target for all your sales goals for 2005? Are you making the sales from all your sales presentations?
You may be far ahead in some areas or behind in others. No matter what your sales production is today you certainly should have another look at what targets and goals you have developed in your game plan for 2005.
Are you using your strengths to their fullest potential? To improve your sales results, determine what has been working or not working. Then define where to concentrate your productive energies for the next two quarters in 2005 or the remainder of your compensation period.
The statistics say that 90% of the sale is made in the presentation. Many sales professionals need...
Polishing Your Sales Presentation
Projection tv > Polishing Your Sales Presentation
A Simple Real Estate Investment Plan To Make A Million Dollars or More!
A Simple Real Estate Investment Plan To Make A Million Dollars or More!
by: David Schneider
This is a very simple Real Estate Investment Plan that anyone can do. In fact, because it?s so simple most people won?t do it. There are only three simple steps.
>> STEP 1. Go out and borrow one million dollars.
>> STEP 2. Use the million dollars and buy one million dollars worth of well-selected real estate.
>> STEP 3. Get other people to agree to pay...
What are the Projection Television Technologies Available? A Simple Real Estate Investment Plan To Make A Million Dollars or More!
Projection tv > A Simple Real Estate Investment Plan To Make A Million Dollars or More!
What are the Projection Television Technologies Available? Projection tv
6 Useful Tips to Cut Wedding Costs
6 Useful Tips to Cut Wedding Costs
by: Dulce Azogue
Weddings are very nice occasions people want to attend to. But they can be time consuming and demand enormous attention on the part of the couple with lots of things to prepare for, in order for their wedding to be memorable. They can be very expensive, too. So how can you prepare for your wedding if you wan to save and are on a budget? Here are some tips.
- Invitations. If you think that inviting...
Projection tv > 6 Useful Tips to Cut Wedding Costs
What are the Projection Television Technologies Available? Projection tv
What are the Projection Television Technologies Available? Projection tv
Don't Worry, Be Happy, Rent a Villa
Don't Worry, Be Happy, Rent a Villa
by: Jose Negron
A family vacation to ?The Happiest Place on Earth? is a rewarding experience you will never forget. With so much to see and do, it has become increasingly important to a lot of visitors that they plan accordingly and reserve comfortable and spacious accommodations. If you are traveling with children, the open spaces in a vacation home or villa will translate into added silence and downtime after a long day at...
pool table What are the Projection Television Technologies Available? Don't Worry, Be Happy, Rent a Villa Projection tv
Projection tv > Don't Worry, Be Happy, Rent a Villa
Projection tv
This page loaded in 0.07051 seconds.