Monday, December 12, 2011

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Saturday, November 5, 2011

Explanation of the Two Major Formats: Blu-ray Disc or Advanced Optical Disc

!±8± Explanation of the Two Major Formats: Blu-ray Disc or Advanced Optical Disc

The gradual evolution of the optical disc technology saw the arrival of the DVDs. DVDs changed the entire entertainment experience. People could watch the latest blockbusters from the comfort of their homes with their latest high definition DVD players, with unmatched picture quality and audio output. DVDs are everywhere, so too are DVD players. You have the high definition DVD players with all sorts of features. The future lies with emerging technologies like Blu-ray and advanced optical discs.

Blu-ray Discs

Blu-ray, popularly known as BD or blue-ray discs, is a next-generation optical disc that has been developed by the Blu-ray Disc Association (BDA). The group consists of leading consumer electronics giants, PC and media manufacturers, like Philips, Samsung, Sony, Sharp, HP, Hitachi and Panasonic, to name a few. The format enables recording, rewriting and playback of high definition video (HD). One major advantage that the technology has over conventional DVDs is that it allows for more storage capacity. It can hold up to 25GB on a single layered disc and 50GB on a dual-layer disc. The technology also incorporates advanced video and audio codes for the ultimate high definition viewing experience. The name Blu-ray is used because the format uses a blue-violet laser, instead of a red laser as in the case of traditional DVDs.

Another major advantage with Blu-ray format lies in the fact that the entire technology is backwards compatible. You can now play your old CDs and DVDs through a BD/DVD/CD compatible unit. The blue-violet laser has a shorter wavelength than a red laser, which enables it to focus on a disc area with greater precision. The data is also packed on the surface of a disc more tightly. This explains the disc's capability to store more data, even though it is of the same size as a traditional CD.

The technology is supported by some of the world's leading manufacturers. In fact, many major movie studios have already announced titles with Blu-ray in them. Warner, Disney, Sony, MGM, and Paramount are among the leading studios who have embraced the format. Some of the famous titles include movies such as Desperado, Fantastic Four, Hero, Kill Bill, and Lethal Weapon. Sony has in fact come out with a mass produced model, which has already hit the market. Several other leading brands have also announced their intentions to launch models with the Blu-ray format.

The Blu-ray movie codes are different from that of DVD region codes. So you have North America, South America, Japan, and East Asia excluding China forming the Region 1, followed by Europe and Africa forming the Region 2. China, India, and Russia make up Region 3.

One major disadvantage with Blu-ray format is that many standard DVD players are unable to read the discs. This problem is being rectified in the form of backward compatible players though. The growth of Blu-ray discs is expected to drive the growth of the home theater segments to further unprecedented heights.

Advanced Optical Discs

Yet another technology, or format to be precise, which is giving the Blu-ray format a good run for its money, is the Advanced Optical Disc (AOD) format. It has been created by Toshiba in collaboration with NEC. Even though it is considered the main rival to the Blu-ray format, ironically, it is being supported by the DVD forum that includes nine members, who are 'Blu-ray disc founders.' While a single layered disc using this technology holds around 15 GB of data, a double layered disc would hold 30 GB of data. One can compress 20 GB of data in the recordable version.

This format too uses the blue laser, the difference being the higher compression of the video stream. One major advantage of the AOD format over the Blu-ray format is the fact that the AOD format will cost you less. Although not a great deal is known about the format as yet, if one were to go by the Toshiba-NEC team, then the players would be smaller than the ones using Blu-ray format.

Capable of playing high definition DVD, some models using the AOD format from Toshiba have already hit the markets. They are roughly priced around 0-0. Details available on the progression of the technology are sketchy, however, during this point in time.

Industry Trends

Industry analysts believe that the Blu-ray format would hold sway over the masses in the near future. There are other related technologies which are also trying to break in, like the Holographic Versatile Disc (HVD) technology. This technology is still at a research stage and claims to have greatly increased storage capacity than both Blu-ray and HD DVD formats.

Researchers are also working on many other technologies. Some of them are claiming to be working on a technology with a storage capacity that is, believe it or not, 100 times that of a DVD. The technology involves making disks with a three-dimensional structure rather than the traditional two dimensional DVDs. With data storage and protection assuming importance, research on various lines is being carried out. Most of these research activities have the potential to revolutionize the home theater market.

With convergence of various features being the trend nowadays, there are several models of DVD players already available in the market, which have gaming options apart from playing DVDs. The increasing popularity of home theater systems is driving the research in this field.

Movie makers too are increasingly dependent on digital formats for both film making and projection. Digital video and audio outputs are considered far more superior to the existing traditional methods, and offer viewers an enhanced movie experience.


Explanation of the Two Major Formats: Blu-ray Disc or Advanced Optical Disc

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Saturday, October 22, 2011

High Definition Region Free DVD Players

!±8± High Definition Region Free DVD Players

The difference between an ordinary and high definition DVD player

It is not only the fact that a high definition DVD player provides us with the combination of very high quality audio and video. It also provides us with the ability to play the latest DVDs from any region of the world. A costly and good quality DVD player that is not region free or high definition can also provide quality audio and video. But the performance of such equipment is restricted in the sense that it can only play DVDs from that particular region, with that region standard built-in. The standard video resolution can be at best 480 visible lines of details. On the other hand a high definition DVD player enables you to view 1080 visible lines providing a greater detail of a picture or image. When it is a region free DVD player, it can play any DVD from any part of the world, with precision, on your TV, that might not be originally compatible with the standard of the DVD. Therefore, the differences are, that an ordinary DVD player will allow you visualise up-to 480 lines while a high definition, with its 1080 lines, provides a better picture clarity. The High definition DVD player also comes in two categories; one is of 720 pixels while the other is of 1080 pixels. Thus resolution and quality wise, there is quite a big difference between an ordinary DVD player and a high definition DVD player.

The High definition region free DVD player

Now we come to the object of our study, the high definition region free DVD player. After having a brief overview of the ordinary and high definition DVD player and their basic differences, we now move on to the term 'region free'. A region free DVD player is one that can play DVD of any standard to be viewed on your TV without going for the compatibility equipments. DVDs cannot be played on all players. Different regions in the world use different standards for a DVD, like PAL, NSTC, and SECAM, as used in Asia, Europe and North America, except that France with few of its neighbouring countries, use SECAM. A region free DVD player will play all types of DVD irrespective of whatever standard they might follow, which solves your problem of not being able to play a DVD of a different standard.

Generally, three standards are followed all over the world in case of DVDs. These are PAL standard, that are used in most part of Asia, Europe and Africa; the NSTC standard used in North America and major part of United States; and SECAM standard, followed in France and few other European countries and Middle East. The problem with these standards is that they are not compatible to each other. As a result, a DVD procured from Europe or Asia, is not compatible with your NSTC compatible TVs used in America. Similarly, the NSTC compatible DVDs from the United States cannot be played in most part of Europe and Asia since they use PAL compatible TVs. The same principle is applied to playing SECAM, the oldest of the standards, on non-compatible TVs elsewhere. A region free DVD player solves these problems by allowing you to view DVD with any standard on any type of TV with its inbuilt system of conversion to compatible standards.

Real use of a high definition region free DVD player

Most people who travel frequently have great use for a high level region free DVD player. There are moments when you would like to watch a movie on a DVD on your own, and within the comfort of your room. You may also like to watch the recorded moments of that holiday that you had with your family last year. Not only sportsmen and travelers, but, people engaged in different professions and business, are always on the move, traveling the world, and a region free high definition DVD player may be their solution for a quiet personal entertainment. Whether you are an official, a businessman, a professional, or a simple traveler, you may like to have themes recorded or view things that you are acquainted with. A high definition region free DVD player, makes this all possible as your personal entertainer.

This is not only the case of an individual, but when you move in groups; such equipment can be a real asset being both an entertainer as well as a knowledge base. Moreover, the added advantage is that, while you will be able to play the local DVDs of the place you are visiting, even though they are not the standard you use back home, you can also play such DVDs that you have brought along with you. You will be able to play them even though they are not compatible to your standards.

Basic elements of a region free high definition DVD player

Now we may have a basic reference to the technicalities involved in a high definition region free DVD player. A region free DVD player is one, in which the manufacturer has not used the region based lock system. Ordinarily, the video game DVDs are always made free from region locking, because they are used universally. But other types of DVDs, especially movie DVDs, have the regional locks, which mean that DVDs of a particular zone will not be play in another zone. The high definition region free DVD players overcome these problems using a unique unlocking mechanism.

Internet and World Wide Web plays an important part here too, since a whole database of DVD unlock codes are available at the DVD code unlock website. In technical terms, a HD DVD or High Definition DVD is a optical disc fromat that can store both high definition video and audio data. In fact it is an expansion of the DVD optical disc format. Instead of the blue violet laser with 405 nm used by a standard DVD, a HD DVD uses a 650 nm wavelength red laser. Therefore, a high definition region free DVD player is an affordable alternative to the price of blue laser optical devices. One basic advantage of the high definition DVD player is its superior image display capability. The high definition region free DVD player is gradually gaining popularity and most of the leading companies in the business have come out with their respective models. Sony, Panasonic, Toshiba, Phillips, Sharp, Samsung, and NeuNeo are some of the leading companies producing high defintion region free DVD players.

Why buy a high definition region free DVD player

With the improvement in audio-video technology, almost all new TVs are high definition ready and compatible. If you do not have a high definition DVD player or not upgrade the existing one, it means you are not using your TV to its full potential. A high definition DVD player will provide you with 720, 768, and 1080i pixel resolutions. However, while purchasing a code free or region free high definition DVD player you must be careful of two things. First you must ensure that it provides a life time guarantee. Second, you should also opt for equipment with at least an 8 MB video converter that is good for any TV upto 27" size to give good picture quality. For larger TVs you may use 14 MB video converter. Once these aspects are taken care of, along-with the feature future up-gradations, you have a deserving equipment.


High Definition Region Free DVD Players

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