Both studios announced initial Blu-ray lineups in May 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 [ 57 ] 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. By , quad-layer GB discs had been demonstrated on a drive with modified optics [ 60 ] and standard unaltered optics. Also, behind closed doors at CES , Ritek revealed that they had successfully developed a High Definition optical disc process that extends the disc capacity to ten layers, which increases the capacity of the discs to GB.
If successfully commercialized, this would enable the consumer to purchase a disc that can be played on DVD players and can also reveal its HD version when played on a BD player. In December , Pioneer Corporation unveiled a GB Blu-ray Disc containing 16 data layers, 25 GB each that will be compatible with current players after a firmware update.
Ongoing development is underway to create a 1 TB Blu-ray Disc as soon as Set-top box recorders are not being sold in the U. However, personal computers with Blu-ray recorder drives are available. On January 1, , Sony, in association with Panasonic, announced plans to increase the storage capacity on their Blu-ray Discs from 25 GB to The higher-capacity discs, according to Sony, will be readable on current Blu-ray Disc players with a firmware upgrade.
No date has been set to include the increased space, although in Blu-ray. On July 20, , the research team of Sony and Japanese Tohoku University announced the joint development of a blue-violet laser, [ 70 ] which will help in creating 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 14, , Blu-ray Disc Association president, Andy Parsons, stated that a task force was created three months prior to conduct a study concerning an extension to the Blu-ray Disc specification that would add support for 4K Ultra HD video. Note that even though the laser is called "blue", its color is actually in the violet range.
The smaller beam focuses more precisely, 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 lasers are GaN gallium nitride laser diodes that produce nm light directly, that is, without frequency doubling or other nonlinear optical mechanisms. 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 at first more vulnerable to scratches. Using a cartridge would increase the price of an already expensive medium, so hard-coating of the pickup surface was chosen instead.
TDK was the first company to develop a working scratch-protection coating for Blu-ray Discs. It was named Durabis. In addition, both Sony and Panasonic's replication methods include proprietary hard-coat technologies. 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.
Usually prerecorded Blu-ray Disc titles ship in packages similar but slightly smaller Unlike the previous releases of mm optical discs i. 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 has never caught on. After the end of the format war, major producers ramped up the production of Blu-ray Discs and lowered their prices to the level of 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. Despite the fact that the BD9 format has been adopted as part of the BD-ROM basic format, none of the existing Blu-ray player models support it explicitly.
It was defined in June BD-R 3. BD-RE 4. BDXL discs are not compatible with existing BD drives, though a firmware update may be available for some newer drives. 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.
Initially, the BD-RE 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 without altering the format. Although it is quite natural, a function for high-speed and easy-to use retrieval is built in.
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.
Some manufacturers will list field rate for interlaced material, but this is incorrect industry practice. For video, all players are required to support H. VC-1 is a compression standard that was mainly developed by Microsoft. BD-ROM titles with video must store video using one of the three mandatory formats; multiple formats on a single title are allowed. 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.
All of the video-based player profiles BD-Video are required to have a full implementation of BD-J, with varying levels of hardware support. 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.
With the exception of the latest players and the PlayStation 3 , Profile 1. 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, etc.
Movie studios 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 disks. 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 has been 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.
This cat-and-mouse game has gone through several cycles. 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. 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.
Sony has released a firmware upgrade for PlayStation 3 consoles that enables 3D Blu-ray Disc playback. It previously released support for 3D gaming on April 21, [ ] followed by the availability of 3D movies. Since the version 3. Chat WhatsApp. Optical disc Optical disc drive Optical disc authoring Authoring software Recording technologies Recording modes Packet writing. Optical media types. See also. History of optical storage media High definition optical disc format war.
Main article: Blu-ray Disc recordable. Main article: BD-J. Blu-ray portal. Retrieved on Retrieved AV Watch. February 19, Page 1. November 1, Retrieved June 15, New Scientist. The Register. High-Def Digest, June 15, High-Def Digest. July 18, Retrieved January 22, EE Times. The Inquirer. London: The Telegraph UK. Bouncing Zabaglione Bros.
Joined: Jun 24, Messages: 6, Likes Received: And so it begins. Color me Dan. What is an AACS blank? Either way i don't think Sony would or could keep people from watching their recorded materials on Blu-Ray. They themselves have released Blu-Ray HandyCams and BR writers so no reason to think they'd shoot themselves in the foot.
Joined: Feb 6, Messages: 7, Likes Received: They will either need that or on-line signing to prevent cheap reverse engineered copies of their recordable discs. My guess is even with RFID that will happen though A crippled format like 3X-DVD makes a little more sense, but personally I don't really see the point in having such short duration discs. Personally, I think there have to be a good way for home movie makers to make their own discs.
Joined: Mar 31, Messages: 3, Likes Received: They are on the bottom of my list so anything else is better. I keep hearing this an awful lot these days that Sonys past actions makes them untrustworthy.
Yet the only thing i can think of would be the DRM scandal which is nothing compared to what other companies have done. Is there a site with some form of recaps that are trustworthy for me to read about this? As far as i understand they have always pushed for their own formats, but never forced them on users. But as i said, i would love to be able to read up on this. Joined: Mar 13, Messages: 18, Likes Received: 9, You only have to look as far as MP3 players to see where Sony shot themselves in the foot and lost to the Ipod years before Apple even came up with the idea of an Ipod.
Sony went from practically dominating the portable music industry walkman cassette and CD players to being a complete non-factor with MP3 players due to their insistance for many years that only Sony DRM protected songs could be played on their MP3 players. And anything you ripped using the software for the player was automatically DRM'd. By the time Sony reversed their decision and allowed unprotected MP3's to be played on their players, they'd already gotten a bad reputation and the Ipod was now out and gaining headway.
Regards, SB. Joined: Feb 6, Messages: 2, Likes Received: I briefly owned a Sony Net-minidisc player. A very nice device at the time but the Sony software was absolutely shocking and I soon ditched it for an MP3 player. Certainly an example of Sony shooting themselves in the foot due to their need to DRM things up the wazoo! Joined: Aug 31, Messages: 4 Likes Received: 0. I guess I can't add links yet.
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