Tips for Buying an HDTV


Buying an HDTV

A regular television with an interlaced screen has 525 scanned lines per image, and half of the picture is refreshed every 30th of a second. Only 480 of those lines are actually seen, though. A regular TV has the same qualities, but the entire image is refreshed at one time instead of only half.

Standard TV uses a 4:3 aspect ration, which looks almost like a perfect square. A high definition TV (HDTV) has 720 interlaced lines (720i), 1080i or 1080 progressive lines (1080p). HDTV also has the same aspect ratio of the average movie screen, 16:9.

This means that not only do HDTV’s have much clearer and crisper picture quality, but they also have a more accurate picture as well since the sides of the picture aren’t cut out. Another great thing about HDTV is the digital surround sound. HDTV’s can recreate 5.1 sounds. You can attach 5 different speakers and a sub-woofer to your TV.

This provides a highly superior sound compared to the one or two speakers on a regular television. There are two catches, however. If there is no HD programming in your area, your HDTV won’t look any better than your neighbor’s standard TV. Secondly, an HDTV must have an HDTV receiver. This can either be built-in or purchased separately.

Things To Consider

Now that you have an idea of what HDTV is and how it differs from standard television you’re almost ready to purchase one. There are four types of HDTV screens to consider each one has both good and bad aspects about them. Deciding which one is right for you becomes very important at this point. Keep in mind that prices can vary widely.

Direct-view CRT (cathode-ray tube) TVs are very inexpensive, especially considering their HDTV quality. You can see them very well from most angles, and they produce the best black coloring on the market. Having good dark black coloring is necessary for creating a good picture. There are some weak points to owning a CRT TV to consider before buying one, though. CRTs are very bulky, which limits their size. It’s exceedingly rare to find one larger than 36″. They also have lower resolutions than other kinds of HDTV’s and usually can’t be used with your computer. Finally, CRT TVs don’t give a good picture in brightly lit rooms. These are an excellent choice if you’re on a budget or are looking for a nice second TV for the den.

The second type of HDTV is the flat-panel LCD. This is the most popular type of HDTV; this is partly due to the wide range of sizes available, their flat screens and similar pricing to CRT TVs in sizes up to 32″. Their flat viewing area also makes them good choices for well-lit rooms. Most flat-panel TVs are only a couple of inches thick, allowing them to fit almost anywhere. Their dark black coloring and viewing angles aren’t as good as some other types of televisions on the market, but their falling prices more than make up for this. LCD technology is progressing, however, and many of the larger, high-end models can give even the best TV a run for its money. If you have the money to plunk down on a high-end model, LCD might be a right choice. Holding out for a couple of years to allow technology to improve a little might not be a bad idea.

Tips for buying HDTV

A close cousin of the LCD is the flat-panel plasma TV. Oddly enough in sizes, less than 50″ these TVs cost more than LCD versions. At 50″ or larger, plasma screens are much less expensive than their counterparts. These are often as thin as LCD’s but are even better for home theaters. Their extensive viewing angle makes them a better purchase than other technologies. Plasma TVs have excellent color saturation and resolution, but lower-end models have a small chance of burn-in. This can occur if images are left on the screen for a long time, like crawlers or stock tickers. The life span of plasma screens is a little shorter than other types of TVs with noticeable fading occurring at an average of 12-15 years. With falling prices and an ever-improving picture quality, plasma TVs are going to remain the best choice for home-theater viewing for the foreseeable future.

Here is a quick breakdown of LCD and plasma screens. LCD screen can range from 5 to more than 65 inches while plasma pretty much sticks to the wide end at 42 to over 65 inches. Inch for inch, LCD uses slightly less energy. 42″ screens are less expensive under 42″ while plasma is cheaper over 42″.

Most LCD models are PC compatible while plasma normally isn’t. Generally speaking, plasma screens have a slightly better picture than LCD, although different models may vary. Plasma screens have a much wider viewing angle than LCD but can suffer from worse glare. There is a small chance of burn-in with plasma, almost no chance with LCD.

LCD and plasma screens

Because if it’s better resolution, plasma tends to do better with DVD movies than LCD, the same holds true with games.

The final, and most confusing, type of HDTV is the rear-projection TV (RPTV). These are the big daddies of the viewing world. If you’re looking for anything over 50″, you’ll want to head over to the rear-projection center. There are some different technologies available with RPTVs so knowing what you’re getting into is important. Most of these technologies deal with microdisplays.

These kinds of televisions utilize microchips containing millions of pixels. The all provide excellent viewing but have to be replaced every few years. The chips can cost more than $200 but are easily replaced. Each of the major manufacturers uses a different kind of chip, and each produces a perfect picture. The best of these technologies are Digital Light Processing (DLP) and Liquid Crystal on Silicon (Lcos).

Now that you have an idea about what kinds of technology are available, there are a few other things to remember when you’re out looking for a new HDTV. The first thing is to make sure you’re getting HDTV and not EDTV, or enhanced definition TV). EDTV has the slightly better resolution the standard TV but nothing like HDTV.

Check out the TV you’re looking at to make sure it has a High-Definition Multimedia Interface (HDMI) port that will support 1080p and High-bandwidth Digital-content Protection (HDCP), so you’ll be able to use an HD-DVD or Blue-Ray DVD player. As an afterthought, the more connections you have, the better off you’ll be. This is especially true if you are planning to attach a lot of components to your TV, like video games. Without ports like these, you’ll be losing a lot of your the new television’s capabilities.

Different channels will send out different resolutions signals. Those messages range from 480p up through 1080p. A good HDTV will be able to view all of these broadcasts in the proper resolution. Make sure you find one that offers as many recommendations as possible. One thing to remember about HDTV is that when watching standard television, the picture may actually look worse. Having such a high resolution can sometimes produce over-pixilated pictures and distorted images.

Don’t forget that HDTV reproduces the movie theater atmosphere, including the sound. Having a great picture is only half of the experience. If you don’t have the speakers for it, I highly recommend getting them. Most department stores and electronic centers sell complete surround sound kits that include all the speakers you’ll need plus a DVD player. Once you have everything set up and pop in your favorite DVD, you’ll wonder how you ever lived without HDTV!

Sharp 56″ Rear-Projection DLP HDTV Review


Sharp 56

When you’re searching the market for a new television, there are several things you must remember. The most important of these is ensuring you have enough room in your home for the video you’re seeking. While many desire a large screen television, such as the Mitsubishi 73″ DLP HDTV, however, these televisions require you to sit at a minimum of eight feet away from the television.

If you do not have this much room, but you still desire a big-screen HDTV, then I would suggest looking into the Sharp 56″ HDTV, Model:

56DR650. This television features all of the major technologies and image enhancing features that make extra-large TVs so unique, but without the strict space requirements.
The first feature I want to discuss this television is the face that it is the perfect size for the majority of living rooms it would be placed in. Even if you have a smaller living room, this television will still allow you to watch your favorite movie and television show within it comfortably.

HDTV Sharp

With the demand for big-screen televisions on the rise, it is important that you choose a TV that can appropriately fit within your home. Another feature about this television that makes it worth your money is the fact that it has a display resolution of 1280 x 720, which allows you to watch high-definition programming in stunning clarity. When you have a television with such a high resolution as this one, the images will have the realistic detail to them that only an HDTV can provide you.

There are two different aspect ratios associated with this television. These include a 16:9 aspect ratio as well as a 4:3. With the 16:9 aspect ratio you will be able to enjoy real film-like qualities, which when combined with the pixel resolution you will have images that are clean and sharp.

There is also an adjustable color temperature system, which allows you to change the overall color hue of this TV. If you watch a wide variety of programming then you will enjoy this feature.


The audio system of this television is also quite impressive. With surround sound capabilities, the two 15-Watt speakers will fill any room with pristine sound. Since this television weighs 130 pounds, it is suggested that you place it within an area of your home that will require very little relocation. If you are looking for an advanced rear-projection television that meets the current trends of high-performance TVs, then I highly suggest this particular model.

Junk Computer Hard Drives a Big Score with Technology Criminals


Computer Hard Drives

Besides death and taxes, another certain event that will occur sometime in one’s life is what to do with their broken or obsolete computer. Many people just throw them in the trash or donate them without properly deleting everything on their hard drive (HDD) making them susceptible to attacks by dumpster drivers and other technology criminals. Many people believe that formatting their computer HDD will erase everything on it. For most common reasons this happens, but the truth is the data is still on there. Virtually everyone stores some type of sensitive information on their computer whether it’s financial, intellectual, or private data.

Company computers mainly because there computers house customer information and financial information which must be protected. Individuals and organizations cannot afford to dispose of their broken or obsolete computer HDD improperly. Individuals, as well as groups, should send their computers or HDD’s to third party companies that specialize in erasing, degaussing, and destroying computer media. These companies use specialized equipment that will permanently delete everything stored on the HDD of the material utilizing Department of Defense (DOD) and National Security Agency (NSA) standards.

Department of Defense

Now you probably think this is a highly expensive service. The good news is these services are relatively inexpensive. Most services run anywhere between $5 and $30 with a median of about $25. Many of these companies also have U.S. Government contracts and are trusted to destroy DoD classified computers media up to Top Secret.

With that being said groups were having GSA contracts can be trusted to properly destroy everything on your computer ensuring 100% privacy is maintained. Once the computer has been erased, certificates are issued with the serial number of the hard drive certifying the service has been completed.

This is a convenient piece of paper especially for companies since it mitigates liability associated with the discarded computer and hardware. Stay away from software claiming to delete everything on your computer. They cost more and are less efficient than just shipping it out to a specialized company. Don’t trust a software package to protect your sensitive information.

The Importance of Encryption Technology


Encryption Technology

With as many hackers that are currently running around the internet, our networks and data are no longer secure without encryption technology. It is essential to make sure that your financial and business information is safeguarded and protected from these hackers, this is why encryption technology is so important.

What Encryption Technology Means to us

Encryption is a very efficient method for scrambling information and securing data.

Whether it is an email that you send or a chat room that you are having a conversation with friends in, encryption technology will break up the whole data sequence and scramble it so that it makes it very difficult for hackers to get this information since it is given out and transformed into thousands of different symbols, numerals, and letters.

In this manner, you personal data will get safely stored on the hard disk or transferred across the internet via email or other types of online services. This will protect your identity and any other personal information and all the details when you process something through the internet.

new multi-layer encryption key

Different styles of Data Encryption

Software that does data encryption involves powerful mathematical algorithms which will break down information and scrambles it into text. This is what is called encrypted version, these can range anywhere between 16bits to 128bits size of a string.

Once the string of text is encrypted the only way it can be unlocked is by the computer or person that has the matching or corresponding string key, or if it is setup a password for the encryption. After a computer or authorized user unlocks the text with the correct key or software, they would be able to access the encrypted information.

On the internet, there are 2 different types of encryption methods, a public key and a private key is both used as a pair. The second key or private key is kept secret and is only used to unlock the information that is maintained in the encrypted string, the Public key is used by many people to code the key string that will be used to cipher the information.

Different styles of Data Encryption

Encryption Technology for Online Transactions – SSL Encryption

An SSL encryption also knows as Secure Socket Layer is currently one of the most efficient encryption technology for online transactions, most commonly these are used for banks, stores and a lot of internet based businesses. Most of these require a much stronger method of encryption, and this is where SSL comes in.


SSL encryption technology is the best way to safeguard electronic transactions, that are used to send back and forth between browsers for e-commerce purposes. Generally, when you are looking at your browser, it will show a secure connection be the address or a little padlock on the bottom right of your browser depending on what you use. In the address bar, it would look like https for a secure connection or HTTP for a nonsecure more traditional method of transactions.

If you are looking into purchasing a plan to protect your identity, then be sure to go with the most efficient encryption methods out there. SSL is one method that is very effective and a great way to solve your security issues.