3D-MAX and LCD glasses display systems

[Alan.Hancock@xxxxxx]

Harold Baize <HAROLD@xxxxxxxxxxxxxxx> wrote:-
>> Subject: Chinon CyberShades
>> At this point I would recommend either Michael Stark's StereoPro for $150
>> or the 3D-Max glasses. Check out the StereoPro at
>> http://www.stereospace.com Check out the 3D-Max glasses at
>> http://pcvr.kasan.co.kr Both of these other LC glasses ship with
>> utilities for viewing your stereo pairs and or stereoscopic animation
>> files. The StereoPro is functionally the same as the Sega glasses or
>> the CyberShades, the 3D-Max claims to allow higher scan rates (less
>> flicker) by connecting to your video board's VESA feature connector (my
>> video board doesn't have one, so I bought the CyberShades, and I'm not a
>> happy camper, I should have bought a new video board and the 3D-Max

    I agree the 3D-MAX glasses package is very good and the supplied glasses
    provide the brightest image I have seen with LCD glasses but this is
    partly due to the filters used in other glasses. At least with the
    3D-MAX you can easily put in or take out the supplied filters if you
    need them. The 3D-MAX system will run SEGA, TOSHIBA 3DTV, CyberShades,
    3DTV, StereoPro and probably the new SimulEyes LCD glasses , and you
    can use at least 10 sets of mix and match glasses from the same board
    simultaneously.

    I understand 3D-MAX are working on a system that will plug into the VGA
    connector which will get round the Video card chipset problems. Although
    the glasses them selves are functionaly similar the method by which the
    earlier serial and parallel port hacks work is different from the 3D-MAX
    scheme.

    The early hacked systems use a 'Frame Sequential' technique that uses
    the page frame swapping cababilities of a standard VGA card in certain
    resolution modes. They are not using an interlaced 'Field Sequential'
    technique to display a stereo image as used by the 3D-MAX system. The
    flicker of the earlier 'Frame Sequential' schemes is much dependant on
    the switching circuit used and the timing of the driver software
    properly handling the VGA vertical trace. I have got such systems to
    work using home made circuits with very little flicker but the scheme is
    outmoded and not worth developing because there are even more technical
    difficulties with different PC's and video cards than the 3D-MAX system.

    Another advantage of the 3D-MAX display scheme is that virtual reality
    stereoscopic head mounted displays such as CyberMaxx, VFX1 and VIO
    i-glasses use the same interlace modes and software written to drive
    these can be used with the 3D-MAX also.

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