400GB Blu-Ray Diskl

ishanroz

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    July 7, 2008, Tokyo, Japan - Pioneer Corporation has succeeded in developing a 16-layer read-only optical disc with a capacity of 400 gigabytes for the first time in the world*1. Its per-layer capacity is 25 gigabytes, which is the same as that of a Blu-ray Disc (BD). This multilayer technology will also be applicable to multilayer recordable discs. This development has bolstered Pioneer's confidence in the feasibility of a large-capacity optical disc, which is expected to become necessary in the near future.

    For multilayer optical discs, it has been difficult to obtain clear signals from each recording layer in a stable manner due to crosstalk from adjacent layers and transmission loss. Utilizing the optical disc production technology that it has developed in the DVD field, Pioneer solved these problems by, among other things, using a disc structure that can reduce crosstalk from adjacent layers, resulting in a 16-layer optical disc that can playback high-quality signals from every layer.

    As for the read-out system, Pioneer achieved stability in the playback of recorded signals by employing a wide-range spherical aberration compensator and light-receiving element that can read out weak signals at a high signal-to-noise ratio in the optical pick-up mechanism. Since the optical specifications of the objective lens, such as NA (Numerical Aperture)*2, are the same as those for the existing BD discs, it is possible to maintain compatibility between the new 16-layer optical disc and the BD discs.

    The 16-layer optical disc technology, capable of storing much more data than the conventional discs on one disc, will greatly reduce the number of discs to be used and therefore contribute to the conservation of resources.

    Pioneer will present the details of this research at the International Symposium on Optical Memory and Optical Data Storage 2008 (ISOM/ODS2008) to be held in Hawaii from July 13
     

    ishanroz

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    New features coming for Blu-ray DVD format By Marc Saltzman, Special for USA TODAY Wed Mar 19, 7:31 AM ET

    The high-definition-video war may be over now that Toshiba has conceded defeat for its ailing HD DVD format, but those interested in buying a high-def Blu-ray player still might want to wait for new features coming in the fall.
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    Sure, existing Blu-ray machines can play the nearly 500 Blu-ray discs available. They can deliver gorgeous, top-of-the-line 1080p resolution on compatible high-def televisions. But the next crop of Blu-ray players will be compliant with the upcoming Profile 2.0 standard, which adds Internet connectivity to the machines via a feature called BD-Live.

    "Imagine being able to download high-definition trailers to current theatrical releases right to your TV, or selecting additional language tracks or other online bonus materials," says Josh Martin, a senior analyst at consulting firm Yankee Group.

    Depending on the disc, BD-Live will also let people chat in real time during films, type in their mobile phone numbers for free movie-related ring tones, play online multiplayer games or upload custom-made audio commentary.

    Sony (SNE) has announced two upcoming Blu-ray machines with Profile 2.0 support: the BDP-S350, available this summer for $399, which can be updated to the latest profile over the Internet when it's available; and the BDP-S550 ($499), which will ship with Profile 2.0 in the fall.

    "Technology always evolves, and new features are added to platforms continually, whether it's a Blu-ray machine or other consumer electronics products," says Chris Fawcett, vice president of home video at Sony Electronics.

    The new Sony players will include extras such as built-in or expandable memory and multiple audio technologies, including Dolby TrueHD, Dolby Digital Plus, DTS-HD High Resolution Audio or DTS-HD Master Audio decoding, depending on the model.

    The Sony PlayStation 3 ($399) video game system, which also has Blu-ray playback functionality, offers a future-proof solution. Sony says the Internet-connected console can download an update for the Profile 2.0 standard.

    For now, the most up-to-date Blu-ray players offer picture-in-picture functionality, also known as BonusView. That allows simultaneous video and audio streams so that you could, for instance, have a small window with video commentary while watching the feature film. Unlike regular DVD players, Blu-ray machines also let viewers turn on some bonus features, such as director commentary, with one button on the remote, as opposed to leaving the film to visit the disc's main menu.

    Not for everyone

    Many people who decide to wait to buy a BD-Live-capable Blu-ray machine probably won't even use that feature, notes Martin. "These upcoming players aren't for everyone, especially for those who just want to watch the movie," he says.

    The BD-Live players connect to the Internet via an ethernet plug in the back of the unit. But "not everyone has a broadband connection in their family room," notes Sandra Benedetto, spokeswoman for the Blu-ray Disc Association trade group.

    Will BD-Live-enhanced discs work with current-generation Blu-ray players? Generally, yes, Benedetto says. "The BD-Live feature just won't be available."

    The death of HD DVD will not mean automatic victory for Blu-ray, says Michael Gartenberg, vice president and research director at JupiterResearch, the New York-based IT research firm. "With high-quality and cheap 'upscaling' DVD players at one end and HD downloads more common, the Blu-ray folks will need to work hard to win the hearts, minds and wallets of consumers to adopt."

    All kinds of features

    Consumers who purchase the newer Blu-ray machines should keep in mind that the Blu-ray discs themselves must also support advanced features such as BD-Live and BonusView.

    Lionsgate's horror sequel Saw IV is heralded as the first BD-Live-ready Blu-ray disc. It contains an interactive feature called MoLog (short for movie blog), where viewers can share their own audio or video content or join an online discussion using an onscreen keyboard. While the disc came out in January, the online BD-Live features will have to wait until the Profile 2.0 standard is here.

    Fox's Aliens vs. Predator: Requiem, available on Blu-ray April 15, will include a BonusView picture-in-picture reference guide called Weyland-Yutani Archives, letting viewers hack into the movie-based corporation's secret computer to read about "all things Alien and Predator," says Fox. The franchise's first BD-Live content won't be available until later this year when Fox reissues the original Alien vs. Predator on Blu-ray with a multiplayer online game called Alien vs. Predator vs. You, demonstrated at the recent Consumer Electronics Show in Las Vegas.

    Disney's first BD-Live title will be a Blu-ray Platinum Edition of Sleeping Beauty, scheduled for October release.