VESA Stereo
VESA Stereo is a liquid crystal shutter glasses interface standard by the Video Electronics Standards Association (VESA) for stereoscopic 3D displays. The system does not drive the glasses directly, instead providing a basic signal and power to be used by other electronics either inside the glasses or in an external unit.
| Type | stereoscopic shutter glasses connector | ||
|---|---|---|---|
| Production history | |||
| Designer | VESA | ||
| General specifications | |||
| Hot pluggable | Yes | ||
| External | Yes | ||
| Pins | 3 | ||
| Connector | Mini-DIN | ||
| Electrical | |||
| Signal | +5 V | ||
| Max. voltage | 5 V | ||
| Max. current | 750 mA | ||
| Data | |||
| Data signal | Yes | ||
| Pinout | |||
 | |||
| Pins from left to right 2,3,1[1] | |||
| Pin 1 | 5v(p) | 5v (750ma) | |
| Pin 2 | GND | Ground | |
| Pin 3 | Sync | Stereo Sync (TTL)[1][2] | |
The VESA Stereo connector has been extensively used in 3D accelerators as well as 3D DLP TVs.
Technical Details
The stereo-sync signal changes when the system is changing between showing images for the right eye and left eye. The signal is a TTL signal where the "high" state indicates the left eye should be exposed.[2] No special software is necessarily needed to create the stereo-sync signal as it can be created from the Vertical synchronization signal being fed to the monitor (if it is using RGB component video).[3]
References
- Bungert, Christoph. "VESA miniDIN-3 connector for shutterglasses". www.stereo3d.com.
- "Connecting stereo glasses to SGI workstations". www.roosmcd.dds.nl.
- "VGA to 3-pin VESA Stereo Adapter". www.int03.co.uk.