S-VIDEO DEMUX - Field-sequential 3D Video De-multiplexer
The S-VIDEO DEMUX is designed to separate the left and right image streams of a standard field-sequential 3D composite video stream and output them on two separate output channels. Its primary application is for large screen 3D Video projection where the S-VIDEO DEMUX drives a pair of polarised video projectors projecting onto a silvered screen. The audience wears polarised 3D glasses to see the full colour and flicker-free 3D video presentation.
The S-VIDEO DEMUX is compatible with both PAL and NTSC video standards. The front panel houses user controls which include Composite/S-Video, 2D or 3D and Normal or Reverse field sequence selection.
The 2D mode sends the same left (or right) image sequence to both channels which aids in the process of image & projector alignment. The Normal/Reverse switch toggles the left and right outputs to allow the correct projection of 3D images from reverse 3D sources. The units power supply is auto voltage sensing to make it easy to transport and operate worldwide.
The field separator hardware in the S-VIDEO DEMUX uses a double buffering technique to create a second field for both outputs. This ensures that the video signals are standard and contain both ODD and EVEN fields.
Block Diagram
(Other configurations are possible.)
Specifications
| Main Features: | Composite and SVideo inputs & outputs Timebase Correction Full frame output Auto-sensing for PAL and NTSC video standards 100-240V 50-60Hz power supply - auto sensing |
| Inputs: | 1 x 4pin mini-DIN (field-sequential 3D SVideo
in) 1 x BNC (field-sequential 3D composite video in) (1Vpp, 75ohm impedance) (switch selectable) |
| Outputs: | 1 x 4pin mini-DIN (Output Left SVideo) 1 x BNC (Output Left composite video) 1 x 4pin mini-DIN (Output Right SVideo) 1 x BNC (Output Right composite video) (all: 1 Vpp, 75ohm impedance) |
| User Controls: | Front Panel Main Power Switch with Power ON indicator LED Normal/Reverse sequence output selector switch 2D/3D output selector switch. (in 2D mode both channels have the same output signal) Composite/SVideo input select switch Align/Video select switch - in Align mode the demux provides an image which can be used for projector alignment purposes |
| Video Standards: | field-sequential 3D composite video PAL (4.43MHz subcarrier, 50Hz Vertical, 15kHz Horizontal) NTSC (3.58MHz subcarrier, 60Hz Vertical, 15kHz Horizontal) |
| Power: | External switch mode power supply: 100-240V, 50-60Hz Auto-sensing |
| Dimensions: | D = 200mm (including connector and switch
protrusions) W = 250mm H = 35mm Weight= 1.3kg |
Rear Panel
Illustration of Field/Image Sequence for Various Modes:
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For further information, please contact:
Centre for Marine Science and Technology,
Curtin University of Technology,
GPO Box U1987,
Perth 6845,
AUSTRALIA.
Phone: +61 8 9266 7920
Fax: +61 8 9266 4799
Email: A.Woods
Curtin University of Technology
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Content Last Modified: July 13, 2007
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