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Best HDTV of The Month

October 30, 2011 – 2:41 pm No Comment | 7,660 views

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If you are looking for the best in HDTV, we suggest you do check out our top 5 best rated HDTV of the month. Their rating are based on consumer reviews at Amazon.com. …

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Home » Projection TV

Different of Projection TV Technology Compared To Other Types

Submitted by on November 3, 2011 – 12:22 amNo Comment | 3,521 views

Projection TV Room
If you’ve been interested in buying a projection TV then you’ll be better off knowing the technology of projection TVs compared to other types of TVs.

Projection TVs are basically the classic CRT or Cathode Ray Tube technology that traditional television is based on. It is comprised of a cathode ray that transmits electrons onto a screen coated with phosphorous. Three beams are sent to create the color picture you see. CRT television sets are thick, heavy and bulky. However they do provide a rich picture and had been the standard for decades. Other technologies are, SXRD or Silicon Crystal Reflective Display primarily from SONY, LCOS or Liquid Crystal on Silicon, DILA or Digital Imaging Light Amplification from JVC, LCD, DLP or Digital Light Processing. These are the systems that projection TVs use. The systems do one of two things, they either project a picture onto a screen called front projection or they project an picture on the back of a screen like see through, and is called rear screen projection. The front screen is what we see when we go to the movies. This is the only way that projection TVs can be seen on big screens as since CRT screens are glass, to have a huge screen would make the device too heavy and bulky.

Example of Well Known Projection TV Brands and Models
[amzn_product_inline asin=’B004ZL2OOU’]
[amzn_product_inline asin=’B000CGGQLY’]
[amzn_product_inline asin=’B000GZUN9W’]

How Projection TV Works

Figure 1 : How Projection TV Works

Now the other technologies like plasma, LCD and LED are totally different resulting in new products that are lighter, less expensive and some with an equal picture quality. LED or Light Emitting Diode utilizes the small LED lights that are used to create an image from the receiving of a signal and using the LED lights to illuminate a special screen to present the images. Likewise with LCD. LCD utilizes CCFL or Cold Cathode Fluorescent Lighting. Prior to LED, LCD was the way to go and before both came CRT and of course Plasma. Plasma utilized ionized gas and afforded for bigger screens that CRT couldn’t achieve without projection.

Now the pluses and minuses of each television technology are many. The plus sides are the picture qualities and entertainment value. Each technology at least offers that. Some say some more than others. LCD for example doesn’t allow for different angles when viewing as the picture quality decreases. LED, Plasma, and Projection TVs don’t have this problem. Plasmas had a problem with both burn-in, where an image gets frozen on the screen or a partial image requiring major maintenance or replacement. In addition, Plasmas burn up lots of energy where LCD, LED don’t. The bottom line is what to do when looking for that picture quality, that entertainment value. Each also has its price ranges, maintenance costs, and convenience of operation. In addition there’s the ability to interface with other entertainment devices such as game consoles and Blue-ray.

Now, the other technologies might use big screens but nowhere as big as a Projection TV can provide. For those with large entertainment rooms or clubs, bars, the Projection TV is the preferable device. Some choose the front projection which calls for a projector and a screen and the rear projection by which the image is projected within the projector and then ricocheted onto the back of a screen. It’s a matter of choice and the configuration of the entertainment area. Some people love the biggest screen they can get. They love that movie theater experience and they’ll then look into the Projection TV which isn’t as high tech as other venues but does do as good a job.

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