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Sony HDL-2000 Hi-Vision Info

#1
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8/9/06 at 9:05am
  • Joined: August 2006
  • Post Count: 2
Is anyone out there familiar with the Sony HDL-2000 professional videodisc player? These were broadband HDVS Hi-Vision players used in tv studios and the like. I understand that they are not MUSE compatable, but can they play regular laserdiscs? If so, do they use a similar laser to the MUSE players? I'm wondering if, like a MUSE player, these might be able to play rotted or damaged discs better than US spec home laserdisc players.
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#2
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8/10/06 at 7:52am
  • Joined: February 2004
  • Location: Beautiful Fort Worth
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Re: Sony HDL-2000 Hi-Vision Info

What do you want to know? I have a certain amount of technical information on this type unit.

To answer what seems to be your principal question, you can not play standard LaserVision discs on an HDVS videodisc deck. With a MUSE player, it is possible to incorporate NTSC signal-processing circuitry because the parameters of the system, other than the signal, are fundamentally similar to standard LaserDisc {see this thread of mine for some details}. This is not the case for the HDL series, which use a fundamentally different recording system.

To be more specific, in order to hold the rotational speed of the HDVS disc down to 1800 RPM [CAV], Sony recorded the signal on two parallel tracks. This means that, instead of data being read by the central spot of the three-beam pickup system, as in LaserDisc players, where the tracking is taken from the two side spots, which are thrown to left and right of the pit-track onto the land areas, the signal is taken from the peripheral spots and the tracking from the land between them. While the pickup is actually based on a standard LD pickup, the differences are such that it cannot play a single-channel disc, be it NTSC, MUSE, or PAL.

Why do you ask? Have you come into possession of one of these monsters?


Resources for :
Anime on LaserDisc
Everything on LaserDisc
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#3
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8/10/06 at 10:04am
  • Joined: August 2006
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Re: Sony HDL-2000 Hi-Vision Info

Thanks, that does answer my question. There's an ebay seller in Canada who's been trying to practically give one of these away for several weeks now with no takers (seller id richgator) but I guess I don't have any use for it if it won't play NTSC or PAL laserdiscs. I don't know where I'd find broadband HD discs to play on it.
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#4
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11/23/08 at 4:20pm
  • Joined: November 2008
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Re: Sony HDL-2000 Hi-Vision Info

I would like to hear much more about these videodisc players. Did they record? What did they play back? Where are the discs? Is the aspect ratio really 5:3? What actual use did they get? Was the format ever considered a standard, perhaps in broadcasting? Please tell me these things, and just about anything you might know about them. Thanks in advance.
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