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Pioneer creates 400Gb Blu-ray disc

Monday, 7th July 2008 14:16 GMT By Patrick Garratt

Pioneer’s succeeded in developing a 16-layer Blu-ray disc capable of holding 400Gb, the firm’s announced.

“Its per-layer capacity is 25 gigabytes, which is the same as that of a Blu-ray Disc,” said the company. “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.”

Press release after the link.

Pioneer Succeeds in Developing World’s First 16-Layer Optical Disc
-Big Step toward Future Large-Capacity Archive System-

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.

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8 Comments

  1. Blerk

    38-hour mandatory install. :-)

    #1 7 years ago
  2. patlike

    Kojima will be happy at least. Imagine the cut-scenes.

    #2 7 years ago
  3. Psychotext

    Well… that’s space sorted for the next gen. Now they just need to get the speeds right.

    #3 7 years ago
  4. McLovin85

    And they said that digital distribution was the way forward……tisch :)

    #4 7 years ago
  5. wz

    Until internet bandwidth gets close to peripheral bandwidth, it’s not that much of a question.

    #5 7 years ago
  6. Psychotext

    You don’t need that sort of bandwidth. Steam’s pre-loading has shown the way on that front.

    #6 7 years ago
  7. wz

    Hmm, maybe when you use the service more frequently than I do, it’s an option.
    I always hate the 1-2 hour delay when I have the sudden need to play one of my Steam games.

    #7 7 years ago
  8. Psychotext

    wz: Yes, but of course these days with consoles you might have installs to deal with anyway. Significant installs with that much data too. :)

    #8 7 years ago

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