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Blu ray disc pdf

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Aug 17, ray Disc™ Format in both disc and equipment products. The standards for 12 cm optical-discs, CDs, DVDs, and Blu-ray™ Rewritable discs. Blu-ray Disc and Blu-ray Disc logo are trademarks of Blu-ray Disc Association. Microsoft, Windows, and the Windows logo are trademarks or registered trade-. There is a thin mm cover layer in Blu-ray Disc which enables sufficient tilt margin. CD and DVD discs are difficult to reproduce by an optical pick-up used only.


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From movies to music to games to PC software and file backup,. Blu-ray Disc™ is your solution! The system embraces pre-recorded titles. (BD-ROM), discs that. Blu-ray is the name of a next-generation optical disc format jointly developed by mmoonneeyy.info disc takes the DVD technology one step further, just by using a laser. Blu-ray Disc format is required by the forthcoming of High Definition TV era which calls for a brand new generation of optical storage after DVD. It is such a.

AVCHD was originally developed as a high definition format for consumer tapeless camcorders. The BD-ROM specification mandates certain codec compatibilities for both hardware decoders players and movie software content. Retrieved May 3, PC Pro. July Retrieved June 28,

Blu Ray Disc Ppt

With this, all major Hollywood studios supported Blu-ray. Shortly after the "format war" ended, Blu-ray Disc sales began to increase. This conclusion was based on the fact that Singulus Technologies has received orders for 21 Blu-ray dual-layer machines during the first quarter of , while 17 DVD machines of this type were made in the same period in Blu-ray faces competition from video on demand [65] and from new technologies that allow access to movies on any format or device, such as Digital Entertainment Content Ecosystem or Disney's Keychest.

Some are released on "flipper" discs with Blu-ray on one side and DVD on the other. Other strategies are to release movies with the special features only on Blu-ray Discs and none on DVDs. Although the Blu-ray Disc specification has been finalized, engineers continue to work on advancing the technology. Its planned launch was in the —10 time frame for ROM and —13 for rewritable discs.

Set-top box recorders were not being sold in the U. However, personal computers with Blu-ray recorder drives were available. The higher-capacity discs, according to Sony, would be readable on existing Blu-ray Disc players with a firmware upgrade.

On July 20, , the research team of Sony and Japanese Tohoku University announced the joint development of a blue-violet laser, [84] to help create Blu-ray discs with a capacity of 1 TB using only two layers and potentially more than 1 TB with additional layering. By comparison, the first blue laser was invented in , with the first prototype discs coming four years later. On January 7, , Sony announced that it would release "Mastered in 4K" Blu-ray Disc titles which are sourced at 4K and encoded at p.

New players were required to play this format, which were able to play both DVDs, traditional Blu-rays and the new format. Although the laser is called "blue", its color is actually in the violet range. The shorter wavelength can be focused to a smaller area, thus enabling it to read information recorded in pits that are less than half the size of those on a DVD, and can consequently be spaced more closely, resulting in a shorter track pitch, enabling a Blu-ray Disc to hold about five times the amount of information that can be stored on a DVD.

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.

In addition to the optical improvements, Blu-ray Discs feature improvements in data encoding that further increase the amount of content that can be stored. Since the Blu-ray Disc data layer is closer to the surface of the disc compared to the DVD standard, it was more vulnerable to scratches in early designs. Using a cartridge would increase the price of an already expensive medium, so designers chose hard-coating of the pickup surface instead.

TDK was the first company to develop a working scratch-protection coating for Blu-ray Discs, naming it Durabis. In addition, both Sony's and Panasonic's replication methods include proprietary hard-coat technologies.

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Sony's rewritable media are spin-coated, using a scratch-resistant and antistatic coating. Verbatim 's recordable and rewritable Blu-ray Discs use their own proprietary technology, called Hard Coat. The Blu-ray Disc specification requires the testing of resistance to scratches by mechanical abrasion. The table shows the speeds available. BD discs are designed to cope with at least rpm of rotational speed. The usable data rate of a Blu-ray Disc drive can be limited by the capacity of the drive's data interface.

With a USB 2. Blu-ray drives that are integrated into a computer as opposed to physically separate and connected via a cable typically have a SATA interface.

Pre-recorded Blu-ray Disc titles usually ship in packages similar to but slightly smaller The format was supposed to use the same codecs and program structure as Blu-ray Disc video but recorded onto less expensive 8.

Usage of BD9 for releasing content on "pressed" discs never caught on. With the end of the format war, manufacturers ramped production of Blu-ray Discs and lowered prices to compete with DVDs. On the other hand, the idea of using inexpensive DVD media became popular among individual users. A lower-capacity version of this format that uses single-layer 4. Both formats are being used by individuals for recording high-definition content in Blu-ray format onto recordable DVD media.

It was defined in June The BD-RE 1. The requirements related with computer file system have been specified in System Description Blu-ray Rewritable Disc Format part 2 File System Specifications version 1. Audio, video, and other streams are multiplexed and stored on Blu-ray Discs in a container format based on the MPEG transport stream. That enables transport streams of digital broadcasts to be recorded as they are broadcast, without altering the format.

Although it is quite natural, a function for high-speed and easy-to-use retrieval is built in. An MPEG transport stream contains one or more MPEG program streams, so this allows multiple video programs to be stored in the same file so they can be played back simultaneously e. The BD-ROM specification mandates certain codec compatibilities for both hardware decoders players and movie software content.

For video, all players are required to process H. Blu-ray Disc allows video with a bit depth of 8-bits per color YCbCr with 4: Some studios, such as Warner Bros. A secondary audiotrack, if present, may use any of the mandatory or optional codecs. At the JavaOne trade show, it was announced that Sun Microsystems ' Java cross-platform software environment would be included in all Blu-ray Disc players as a mandatory part of the standard.

DVDs use pre-rendered MPEG segments and selectable subtitle pictures, which are considerably more primitive and rarely seamless. At the conference, Java creator James Gosling suggested that the inclusion of a Java virtual machine , as well as network connectivity in some BD devices, will allow updates to Blu-ray Discs via the Internet, adding content such as additional subtitle languages and promotional features not included on the disc at pressing time.

It can either be built-in memory or removable media, such as a memory card or USB flash memory. The first Blu-ray Disc album to be released was Divertimenti , by record label Lindberg Lyd, and it has been confirmed to work on the PS3. BD-Live features have included Internet chats, scheduled chats with the director, Internet games, downloadable featurettes, downloadable quizzes, and downloadable movie trailers.

Profile 1. Internet is required to use. As with the implementation of region codes for DVDs , Blu-ray Disc players sold in a specific geographical region are designed to play only discs authorized by the content provider for that region. This is intended to permit content providers motion picture studios, television production company etc. According to the Blu-ray Disc Association, all Blu-ray Disc players and Blu-ray Disc-equipped computer systems are required to enforce regional coding.

However, content providers need not use region playback codes. Movie distributors have different region coding policies. Among major U. In circumvention of region coding restrictions, stand-alone Blu-ray Disc players are sometimes modified by third parties to allow for playback of Blu-ray Discs and DVDs with any region code. Unlike DVD region codes, Blu-ray region codes are verified only by the player software, not by the optical drive's firmware.

The Blu-ray Disc format employs several layers of digital rights management DRM which restrict the usage of the discs. Blu-ray equipment is required to implement the High-bandwidth Digital Content Protection HDCP system to encrypt the data sent by players to rendering devices through physical connections.

This is aimed at preventing the copying of copyrighted content as it travels across cables. In order to ease the transition to high definition formats, the adoption of this protection method was postponed until Since the appearance of the format on devices in , several successful attacks have been made on it. The first known attack relied on the trusted client problem.

In addition, decryption keys have been extracted from a weakly protected player WinDVD. Since keys can be revoked in newer releases, [] this is only a temporary attack, and new keys must continually be discovered in order to decrypt the latest discs.

Such programs can: These programs can then be included in all new content releases. BD-ROM Mark is a small amount of cryptographic data that is stored separately from normal Blu-ray Disc data, aiming to prevent replication of the discs. The cryptographic data is needed to decrypt the copyrighted disc content protected by AACS. During replication, this ROM Mark is transferred together with the recorded data to the disc.

In consequence, any copies of a disc made with a regular recorder will lack the ROM Mark data and will be unreadable on standard players.

The PlayStation 4 does not support CDs. AVCHD was originally developed as a high definition format for consumer tapeless camcorders. The Blu-ray Disc Association BDA created a task force made up of executives from the film industry and the consumer electronics and IT sectors to help define standards for putting 3D film and 3D television content on a Blu-ray Disc.

However, triple layer 3D discs often have a user limitation set preventing the disc from being viewed in 2D though a 2D disc is often included in the packaging. Sony added Blu-ray 3D support to its PlayStation 3 console via a firmware upgrade on 21 September From Wikipedia, the free encyclopedia. This article may require cleanup to meet Wikipedia's quality standards.

Blu-ray - Wikipedia

The specific problem is: Move information about Ultra HD Blu-ray to its own page. Please help improve this article if you can. March Learn how and when to remove this template message. For the fish of the same name, see Neoraja caerulea. Optical disc Optical disc drive Optical disc authoring Authoring software Recording technologies Recording modes Packet writing.

Optical media types. Compact disc CD: See also. History of optical storage media High-definition optical disc format war. Main article: High-definition optical disc format war. This article needs to be updated. Please update this article to reflect recent events or newly available information. April Blu-ray Disc recordable. High Fidelity Pure Audio. Ultra HD Blu-ray.

Exact composition is different as stated in the body of the article.

Pdf disc blu ray

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