A single-Layer BD has storage capacity of 25GB, while a dual-la

Blu-ray Disc (also known as Blu-ray or BD) is an optical disc storage media format. It is mainly used in high-definition video and data storage. Blu-ray Disc has the same physical dimensions as a standard DVD or CD.

A single-Layer Blu-ray has storage capacity of 25GB, while a dual-layer BD can store up to 50GB of data. As the name suggests, a blue-violet laser is used to write data on a Blu-ray disk, unlike the traditional method wherein red laser employed to store data on DVDs.

A Blu-ray disk can hold 9-hour high definition video and standard-definition (SD) video that can run 23 hours, on a 50GB disk. The BD-ROM movies will require a rate of MBPS for data transfer, so the expected speed is 2x (72 Mbps). There is also a scope for having much higher speed because of the larger numerical aperture (NA) adopted by the BD. It implies that a Blu-ray disk will need less recording power and lower disk rotation speed vis-à-vis conventional DVDs and HD DVDs. The sole limiting factor for blu-ray is the capacity of the hardware.

The storage capacity of Blu-ray disk (BDs) is five times that of conventional DVDs. BDs supports NPEG-2, MPEG-4 AVC and SMPTE VC-1 formats (codecs).

Blu-ray Disc uses a “blue” (technically violet) laser operating at a wavelength of 405 nm to read and write data. Conventional DVDs and CDs use red and near infrared lasers at 650 nm and 780 nm respectively.

The blue-violet laser’s shorter wavelength makes it possible to store more information on a 12 cm CD/DVD sized disc. The minimum “spot size” on which a laser can be focused is limited by diffraction, and depends on the wavelength of the light and the numerical aperture of the lens used to focus it. By decreasing the wavelength, increasing the numerical aperture from 0.60 to 0.85 and making the cover layer thinner to avoid unwanted optical effects, the laser beam can be focused to a smaller spot. This allows more information to be stored in the same area. For Blu-ray Disc, the spot size is 580 nm In addition to the optical improvements; Blu-ray Discs feature improvements in data encoding that further increase the capacity.

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Technology has come a very long way of the past years and has altered the method in which people vie their movies. You can probably remember the days when people watched their home movies through their VCR’s. Of course these VHS tapes were bulky, consumer a lot of storage room, and output much lower quality visuals than seen today with DVD’s and the emerging BD media. LaserDiscs’s soon thereafter replaced the VHS and VCD’s but this was short-lived when DVD was introduced to the scene. DVD (Digital Versatile Disc) was of course much more advanced than VCD and stored six times more information.

A single DVD with a storage capacity of 4.7 GB is capable of storing one full-length movie as well as other behind-the-scene footages and other extra features. Due to this, DVD’s have had a major impact on the movie industry and as a result a greater number of people are purchasing DVD’s to view in their homes. The DVD may however be replaced by a new technology that would further enhance the movie industry. This new technology is known as Blu-Ray.

Blu-Ray technology is considered to be the next-generation DVD. Blu-Ray Discs or BD can record, store and are able to play back more video, digital audio, as well as computer data. BDs can also store a full length high-definition movie which usually takes a higher bandwidth and storage space. Compared to DVDs. Blu-Ray Discs have the advantage on the amount of information that it can store. A single-layer BD has the capacity to store 27 GB of digital information. This single-layer BD is enough to hold more than two hours of high-definition videos or to hold more than 13 hours of standard video. A double-layer BD on the other hand can be able to store more than 4.5 hours of high-definition video because of its 50 GB storage capacity.

Laser lights are effectively the way in which optical disc storage media (for example DVD and Blu-ray) are able to read information, with Blu-ray utilizing blue violet rays whereas DVD uses red ultraviolet rays. The amount of information that can be stored in discs is dependent on how large and precise the laser light is. Blue laser has a shorter wavelength than that of red laser and because of this, blue laser is more precise and can write information in much smaller spaces. This is the reason why a lot more information can be stored in a Blu-Ray disc.

A huge storage capacity is not the only advantage of a Blu-Ray technology. Blu-Ray Discs can also transfer information at a higher rate. Blu-ray discs are so revolutionary because they are capable of a data transfer rate of 36 Mbps (megabits per second) whereas a standard DVD can only transfer at a rate of 10 Mbps.

Two technologies namely, Blu-ray and High Definition DVD (HD-DVD)are competing against each other to successfully become the official storage medium for the future of high definition media. Blu-Ray discs were first utilized by Sony in their PlayStation 3 games and because of this, BD is now becoming popular among giant movie production studios such as Warner Brothers which have stated that they will only release their High Definition movies in BD formats starting May of 2008.

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Blu-ray is capable of storing and playing movies in 1080p resolution. In many respects, 1080p resolution is called “True High-Definition” or “Full High-Definition”. A Blu-ray disc can store and play roughly around 5 to 6 hours of high-definition content (1080p resolution) and around 24 hours of standard-definition content (480i or 480p resolution). With the capability of storing up to 50 gigabytes of data, you will be able to watch an entire Blu-ray movie with crisp clarity.

But what exactly is 1080p resolution?

Well, the number 1080 means that there are 1,080 lines of vertical resolution. Generally the larger number of vertical resolution lines, the sharper and more detailed the image. The letter “p” stands for progressive scan. Progressive scan (a.k.a. non-interlaced) is a way to transmit, store, or display moving images. The other method of transmitting, storing, or displaying moving images is called interlace. Interlace is represented by the letter “i” (1080i). Interlace was created to improve video quality without consuming more bandwidth. However, progression scan is superior to the interlaced method because the progression scan method transmits, stores, or displaying moving images by processing all horizontal lines sequentially each frame. While the interlace method processes every other line in one frame, then the rest of the lines in the next. This results in reduced horizontal resolution. While the interlace method isn’t all bad, and the progressive scan method isn’t prefect, when it comes to which provides the best picture quality, progressive scan is the way to go.

HD DVD has the capability to store and play movies in 1080p, so why is Blu-ray better?

The answer to that question requires one word, space. A HD DVD has greater limitations than Blu-ray. HD DVD discs and Blu-ray discs come in two forms, single layered and dual layered. Please note that the higher the number of gigabytes, the more data that can be stored. A single layered HD DVD disc has a maximum capacity of 15 gigabytes and a single layered Blu-ray disc has a maximum capacity of 25 gigabytes. When these two discs are dual layered, their maximum capacities are doubled, with a HD DVD at 30 gigabytes and Blu-ray at 50. So, at most Blu-ray can handle 20 gigabytes of additional storage, and with a world that is constantly changing, that extra 20 gigabytes can make a world of difference.

Blu-ray movies: In the highest definition ever!

Blu-ray movies have the edge over HD DVD movies. Due to the lack of space, HD DVD will eventually fall further and further behind. On the contrary, Blu-ray will reach its full potential, being able to store more of the finest details and stunning visuals. Blu-ray has reached the highest definition ever!

Blu-ray and Blu-ray Movies has reached the highest definition ever.

DVDs continue to be the prominent medium for home theater entertainment. The technology is being refined and improved upon by a number of manufacturers, making its future slightly uncertain though it is definitely clear that it will continue is one format or another. Many of you have probably been hearing about Blu-ray and HD-DVD discs and their path as the next generation of DVDs. The discrepancies between the two are confusing many home theater buyers, so it’s important to know just what each of these new technologies has to offer so that you can make an informed decision on what to purchase and when.

Let’s start by discussing just what Blu-ray is. Chances are, if you’ve stepped into any of the leading home theater and electronics stores in the country, you’ve seen Blu-ray discs advertised in the DVD section. In truth, Blu-ray discs are somewhat like traditional DVDs, except that they have the ability to record, rewrite, and playback high definition (HD) video that is compatible with the growing number of HD televisions finding their way into home theaters every year. Unlike traditional DVDs, Blu-ray discs can hold nearly five times as much data. On a single layer disc, they can hold 25GB of data, and 50GB can be stored on a dual layer disc. By being able to hold so much more, Blu-ray discs are able to easily store the advanced information necessary to provide content in HD format.

HD-DVD offers the same technology, though it isn’t able to hold as much information as Blu-ray. Developed by Toshiba and NEC, it is able to hold three times as much data as traditional DVDs. While this may be less than Blu-ray, the data capacity of HD-DVDs still exceeds the amount needed to watch major blockbusters in high-definition. HD-DVD also came out much sooner and was first quoted to be the successor to the standard DVD format. HD-DVD is completely compatible with HD-DVD players, which in turn are compatible with HD televisions. High definition technology is certainly the wave of the future for home entertainment, and HD-DVD was the first disc technology formatted for it.

Both Blu-ray and HD-DVD discs use a new form of laser that improves on what the standard DVD used. While older, standard DVD models used a red laser to transfer content from disc to player to screen, these two technologies use a blue-violet laser instead. The main benefit with using blue-violet lasers is that they have a shorter wavelength than red lasers. This means that they can be focused with a much higher rate of accuracy.

As you can see the differences between these two formats are very few, In short, Blu-ray is able to hold more information than HD-DVD, but HD-DVD has been around for much longer and still holds an adequate amount for any applications currently in the market. Both formats use blue-violet lasers to better read the information.

The biggest question right now is which format will end up on top. Blu-ray has the added advantage of being backed up by some major players in the movie business. Seven of the eight major Hollywood movie studios have released films in Blu-ray format recently, while five of them are releasing films exclusively on Blu-ray. HD-DVD has the backing of several major consumer electronics manufacturers but does have some ground to make up with the production companies. However, with the added experience of being in production longer and having consumers more familiar with the name, it’s very possible for them to pull ahead. The race to be the top home entertainment format will continue on and the consumer will simply need to wait to see which one wins. In the meantime, players are available for both formats and some manufacturers have players that satisfy both formats available.

~Ben Anton, 2007

Blu ray technology refers to the way used by manufacturers to spacious blu ray DVDs. Blu-ray disc is an optical disc storage device used for storing video, computer games and other variety of data. It has a huge storage capacity, as much as 35 GB for a single layered compact disc. It derives its name from the blu violet laser used to read the content stored in the disc. It uses a short wave length; minor than the one in use by a standard DVD, but harbors the storage capacity of up to six DVDs combined.

Blu ray DVDs faced nonflexible competition from High Definition DVDs. The DVDs had a more successfully marketing strategy that made the blu ray DVDs seem classy and cumbersome. Still, they got a respite with the growth of the third generation play station since it also functioned as blu ray DVDs player. With the passage of time, blu ray DVDs outsold DVDs when essentially youngsters but also the general public purchased the third generation play station for fun.

Subsequently, it was the decision by chief movie houses to start using Blu-ray discs as opposed to blu ray DVDs. This affected the operations of the manufacturers of the DVDs because movie houses were a imperative market for their product. This action by the movie houses was followed by a decision among most important retailers to stop stocking DVDs. After this enrichment, the manufacturer of DVD stopped the production of this product.

Numerous observers credit the technique of the third generation play station congregate with the superior marketing techniques employed by the proponents of the Blu-ray discs as the trigger that precipitated the sudden rise of the blu ray DVDs and accordingly the fall of the DVDs.

The overall idea of the blu ray DVDs is that they are designed and created by using a blue laser which allows for superior exactness in the change of the DVD as a product. Also, by using the blue laser it is thinner, so more space is eventually obtainable to be used too. Just like the latest standard DVDs these new and better blu ray DVDs can be used for recording, backing up data, media, movies, music, and multiple other uses.

Forums and blog postings have decent a super deal that pertain to the blu ray DVDs due in part that these DVDs do in fact offer so much more to an entity. There are several web sites using the Internet that are associated with the blu ray DVDs and individuals who are interested in these ideas and issues that are talked to plus other information, there are many to decide from.

While some experts disagree with sure changes in the technology industry, when surveys were done in effect via the Internet individuals who have purchased the blu ray DVDs left actually optimistic feedback about the new products. On the five star rating scales the product was persistently rated with five stars.

Blu ray DVDs had a more adequate storage device used for storing video, computer games and other forms of data. You can search it at http://blu-ray-dvds.filmundo.de/

Long gone are the days of simple DVD players that limited viewing to simply discs. Now, Blu-Ray Disc players offer all the benefits of DVD players, while taking advantage of what an internet connection can provide such as Amazon, Netflix and other video services available online. Among the many players available, one unit that stands out both in terms of price and quality is the Panasonic DMP-BD85K WiFi Enabled Blu-Ray disc player.

The Panasonic DMP-BD85K WiFi Enabled Blu-Ray disc player offers much more than the full HD 1080p video one would expect from Blu Ray Discs. This unit incorporates stunning audio features that provide excellent surround sound to take your viewing experience to the next level. The Dolby TrueHD, dts-HD Master Audio, as well as other more advanced Panasonic technologies, combine to offer great surround sound that can only be found in movie theatres.

Additionally, the unit allows playback of a number of formats including AVCHD, MP3 and even JPEG for complete viewing flexibility.

Pros of the Panasonic DMP-BD85K WiFi Enabled Blu-Ray Disc Player

Consumers who purchased this unit were quite impressed with the picture and audio quality as well as the Youtube integration, which appeared to work without a hitch. Additionally, the Netflix, DIVX VOD and Amazon video services also worked seamlessly, unlike other units which were unstable and required numerous reboots to get everything working properly.

The load times for movies are also excellent, at around one minute and the capacity to stream Netflix and other services wirelessly is definitely a boon. The quick setup of the unit was also pleasing to customers. It only took 20 minutes from taking the unit out of the box to sitting down to watch a movie, including connecting it to the TV, setting up the wireless connection, and creating a Netflix account.

Even when used with a non HD enabled television the video quality is superior to regular DVD players. The picture is cleaner and offers more vibrant colors and the price is also an advantage compared to other players in a similar class.
Cons of the Panasonic DMP-BD85K WiFi Enabled Blu-Ray Disc Player

One of the cons mentioned by consumers is the lack of DLNA features as well as the fact that there is no music service included at the moment. There also were some complaints about the manual not providing enough clear information on how to set up the Wi-Fi connection.

Some consumers were also disappointed that the unit didn’t feature certain functions that the company’s press release advertised it would such as Pandora or Skype.

Even though it doesn’t deliver as many internet streaming options as other units, the Panasonic DMP-BD85K WiFi Enabled Blu-Ray Disc Player is unbeatable when it comes to audio and video quality. The ability to play CDs and DVDs as well as the Blu-Ray Discs also makes this unit a great option for anyone with a wide collection or who doesn’t want to invest in revamping their movie collection by replacing it with Blu Ray discs.

The Samsung BD-C6900 1080p 3D Blu-ray disc player is the ultimate in interactive, movie theatre quality home entertainment systems. You are no longer limited to simply watching a movie as now you can connect to the internet through your disc player and play games, keep in touch with your friends and so much more.

Samsung BD-C6900 1080p 3D Blu-ray Disc Player: Features

This Samsung disc player features a number of interesting features including the capability to stream online digital content and 3D technology for incredible picture depth allowing you to fully immerse yourself in the action.

Internet@TV allows you to connect your HD TV to all your favorite digital content services from Netflix, to Blockbuster and Pandora. You won’t be forced to watch movies on a tiny computer screen anymore as you will be able to stream everything directly to your big screen TV. You can even view all your favorite photos from Flickr right on your TV and connect with your friends through Facebook and Twitter.

This player also features a stunning design and its sleek appearance and high gloss finish will fit in beautifully with any décor. The AllShare system also allows you to connect to your PC so you can view all your video files and play your audio files right on your TV without having to transfer all the files to a disc.

The unit also features a USB port so you can transfer and store any BD-Live material you have downloaded. BD-Live is a service whereby studios can add more content to the discs people have purchased after they discs have already been delivered.

Samsung BD-C6900 1080p 3D Blu-ray Disc Player: Pros

When paired with a 3D ready HD TV, this Samsung player offers a full 3D picture that is even clearer than in a movie theatre. It has great loading times and even the quality of the 2D picture is stunning. In fact, some consumers were so pleased with the quality of the player that they claimed to watch much more television since getting the unit than they had ever done in the past.

Samsung BD-C6900 1080p 3D Blu-ray Disc Player: Cons

One major problem with this unit is that it doesn’t work with all HD TVs, even if they state they are 3D enabled. Essentially, it seems that the Samsung only works with Samsung televisions because the 3D technology they employ works based on active shutter technology. The latter plays the role of 3D glasses by blocking and unblocking the different colors so fast that you cannot see what is happening with the naked eye. Thus you see in 3D. However, the problem is that this technology requires a very high refresh rate of 120 Hz, which very few televisions have.

Another con is the fact that the 3D glasses are quite expensive at the moment, at $150 per pair, it can be quite expensive for two people to watch a movie in 3D. However, it appears that Samsung has plans to launch their own glasses which will not be quite as expensive.

There were other complaints but most of them were due to the fact that customers were not updating their firmware as often as they should.

All in all, the Samsung BD-C6900 1080p 3D Blu-ray Disc Player is the technology of the future and at the moment the 3D technology may not be of much use because there aren’t many 3D discs available. However, the price point makes it a worthwhile investment as 2011 will probably see a multitude of 3D movies hitting the market.

Warner Bros. has announced that they will be supporting Blu-ray exclusively. The decision, according to their statement, was chiefly because of strong consumer liking for the format.

“In response to consumer demand, Warner Bros. Entertainment will release its high-definition DVD titles exclusively in the Blu-ray disc format beginning later this year, it was announced today by Barry Meyer, Chairman & CEO, Warner Bros. and Kevin Tsujihara, President, Warner Bros. Home Entertainment Group.

“Warner Bros.’ move to exclusively release in the Blu-ray disc format is a strategic decision focused on the long term and the most direct way to give consumers what they want,” said Meyer. “The window of opportunity for high-definition DVD could be missed if format confusion continues to linger. We believe that exclusively distributing in Blu-ray will further the potential for mass market success and ultimately benefit retailers, producers, and most importantly, consumers.”

Variety is reporting that Warner sister company New Line has announced that it too plans to shift to Blu-ray exclusivity. For the moment both Warner Bros. subsidiaries, HBO and New Line, remain format-agnostic, though it’s widely expected that they will follow Warner Home Entertainment’s exclusive use of the Blu-ray format. However, the studio’s declaration that it would drop HD DVD support does not extend to titles released by New Line, HBO or the BBC, according to Warner Home Entertainment President Kevin Tsujihara.

Blu-ray is a high-density optical disc format for the storage of digital information, including high-definition video. The name “Blu-ray” is derived from the blue-violet laser used to read and write this type of disc. The Blu-Ray Disc Association, a group of leading companies representing consumer electronics, computer hardware, and motion picture production, developed the format.

Warner Bros.’ decision is a huge development in the Blu-ray disc versus HD DVD format war currently raging on because Warner Bros. was always considered the big fish to be landed by one side or the other. Consumers were lobbied hard by both sides during Christmas as dirt-cheap Toshiba HD DVD players were advertised heavily by Wal-Mart for $98.97 while the higher priced Blu-ray players were also discounted by electronics retailers (though not nearly as much).

The change will take effect from May 2008. Executives at Warner Bros. explained that the choice to solely support one high-definition format over another was made to avoid uncertainty on the market of HD movies and allow Warner’s partners among retailers to stock more titles by Warner than previously. Warner Bros.’ move to exclusively release in the Blu-ray disc format is a tactical decision focused on the long term and the most direct way to give consumers what they want.

Tsujihara says the studio took no pay-offs to exclusively back Blu-ray. He emphatically denied reports that the studio had received anywhere from $250 to $500 million in exchange for dropping its HD DVD format support in a post-announcement conference call. Warner’s only incentive to drop its HD DVD format, according to the exec, was to ensure growth of the “category” and the long-term health of the industry.

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