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Sony's Blue-Violet Laser the Future Blu-ray? 260

Posted by timothy
from the ever-more-bits dept.
JoshuaInNippon writes "Japanese researchers from Sony and Tohoku University announced the development of a 'blue-violet ultrafast pulsed semiconductor laser,' which Sony is aiming to use for optical disks. The new technology, with 'a laser wavelength of 405 nanometers in the blue-violet region' and a power out put 'more than a hundred times the world's highest output value for conventional blue-violet pulse semiconductor lasers,' is believed to be capable of holding more than 20 times the information of current Blu-ray technology, while retaining a practical size. Japanese news reports have speculated that one blue-violet disk could be capable of holding more than 50 high-quality movie titles, easily fitting entire seasons of popular TV shows like 24. When the technology may hit markets was not indicated."
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Sony's Blue-Violet Laser the Future Blu-ray?

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  • um (Score:4, Interesting)

    by Charliemopps (1157495) on Thursday July 22, 2010 @06:02PM (#32997534)
    I thought we were pretty much done with physical media?
  • by clarkkent09 (1104833) on Thursday July 22, 2010 @06:36PM (#32997894)
    Who cares. By the time this technology goes commercial, optical discs will be dead as far as selling movies, music and such goes. Maybe they'll have some other more limited uses.
  • Re: (Score:4, Interesting)

    by Tumbleweed (3706) * on Thursday July 22, 2010 @06:42PM (#32997950)

    If your storage medium has to explicitly allow your content then someone is doing it terribly, terribly wrong.

    Yeah, they were very stupid about licensing, and that's why, even with, what a year+ lead, HD-DVD died an embarassing death. This is one case where the market really DID decide.

  • by julesh (229690) on Thursday July 22, 2010 @07:37PM (#32998474)

    The limit on drive capacity is not switching speed, but focal spot diameter. If this is a 405nm laser, its minimum focus spot will be exactly the same size as the spot of existing Blu-Ray lasers (they're 405nm, too). What am I missing?

    That somebody somewhere along the line hasn't thought about the implications of what they're talking about?

    The laser described is a _100W_ laser. Because of the short pulse length, I'm not sure if this makes it a class 3B or class 4 laser, but in either case safety equipment including a failsafe keyswitch is legally required. This is not consumer equipment. It is not going to be built into a consumer-grade optical disc player. Ever.

    But if it were, which is of course theoretically possible, then the original Sony press release [sony.net] has more technical details that I can't claim to entirely understand, but which do suggest some rationale for the claims.

  • Re: (Score:5, Interesting)

    by squiggleslash (241428) on Thursday July 22, 2010 @07:43PM (#32998506) Homepage Journal

    HD DVD was an open format available to anyone who wanted to implement it. As far as content went, it was the more open of the two - you didn't need, for example, to license AACS to press a disc.

    HD DVD's failure had nothing to do with licensing, it was a straightforward case in which Hollywood picked the winner. Hollywood, as a whole, didn't like the fact HD DVD didn't require access controls (making it harder to trace pirates), and lacked snake-oil solutions like BD+. Added to the fact Sony is a studio, Blu-ray had the studio support.

  • by blahplusplus (757119) on Thursday July 22, 2010 @07:48PM (#32998538)

    ... the cost of 20PK of 25GB discs (500GB) is the same as a 750GB-1GB hard disk, with 2TB hard disks going for $99. The media for blu-ray is not cost competitive with hard disks any longer they better hurry up since by the time blu-ray discs become cost competitive so hard disks no longer offer more bang for the buck there will be new Hard drives out.

  • Re: (Score:4, Interesting)

    by westlake (615356) on Thursday July 22, 2010 @08:37PM (#32998824)

    The reason HD-DVD didn't take off was because they didn't allow porn.

    HD-DVD was supported by Warner Brothers and Universal.

    Blu-Ray had Disney.

    In home video, that is all you need to know to predict a winner.

    Disney was the rocket that launched the ABC television network into orbit in the mid 1950s.

    When Disney moved to NBC and all-color programming, the big screen B&W set was on the fast track to oblivion.

    The big screen HDTV is family entertainment -

    and Disney has 87 years of product to meet that demand.

Every nonzero finite dimensional inner product space has an orthonormal basis. It makes sense, when you don't think about it.

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