= VESA

= Video Electronics Standards Association_____________________________________=

860 Hillview Court, Suit= e 150 &= nbsp; &nbs= p; &= nbsp; &nbs= p; &= nbsp; Phone: 408-957-9270

Milpitas, CA 95035 &= nbsp; &nbs= p; &= nbsp; &nbs= p; &= nbsp; &nbs= p; &= nbsp; &nbs= p; Fax: 408-95= 7-9277

VESA Standard

Connector and Signal Standards

for

Stereoscopic Display Hardware

Version 1

November 5, 1997

= Purpose

To establish a standard connector for the attachment= of stereoscopic viewing devices, such as LCD shutters, shutter glasses, etc., which will provide power and the stereo synchronization signal to these products.

= Summary

The use of stereoscopic viewing modes, which rely on= the alternate display of left- and right-eye fields, is becoming more important= in the computer industry. Devices to enable this mode require a "stereo sync" signal, which is used to prevent each eye in turn from seeing th= e "wrong" field. Until now, no standard connection was defined for these devices.

= General Information and Intent of Standard

This document is intended to establish standards for= the physical connector and signals used to support stereoscopic display hardwar= e of the type using sequential display of left and right images, with hardware m= eans of shuttering the viewer’s eye such that each eye sees only the inten= ded image. Common implementations include LC (liquid crystal) shutter glasses, = or similar systems relying on polarization of the images. In any case, the sys= tems intended to be covered by this standard require the use of a stereo synchronization signal which identifies by its state which of the two image= s is currently being displayed. This standard provides a specification of the physical connector to be used to provide this signal, regardless of the physical location of this port within a computer system, and the specificat= ions for the signal itself.

= RIGHTS PERTAINING TO CONNECTOR & SIGNAL STANDARDS FOR STEREOSCOPIC DISPLAY HARDWARE

= Intellectual Property

While every precaution has been taken in the prepara= tion of this standard, the Video Electronics Standards Association and its contr= ibutors assume no responsibility for errors or omissions, and make no warranties, expressed or implied, of functionality or suitability for any purpose.=

= Trademarks

All trademarks used within this document are the property of their respective owners.

= Patents

VESA proposals and standards are adopted by the Video Electronics Standards Association without regard to whether their adoption = may involve any patents or articles, materials, or processes. Such adoption does not assume any liability to any patent owner, nor does it assume any obliga= tion whatever to parties adopting the proposal or standards document.=

= Software Support=

Please note that VESA has defined standard software interfaces to stereo hardware, via the

VESA BIOS Extension Standards VBE 3.0+ and VBE/AF2.0= +. The reader is referred to these standards, available from the Video Electro= nics Standards Association, for further information.

= Support

Clarifications and application notes to support this standard may be available. To obtain the latest

standard and any support documentation, contact the Video Electronics Standards Association.

If you have a product, which incorporates a stereo connector per this standard, you should ask the company, which manufactured your product for assistance. If you are a manufacturer, VESA can assist you with any clarifications you may require regarding this standard. All questi= ons, comments, or reported errors should be submitted in writing to VESA using o= ne of the following methods:

= Fax: 408-957-9277 Direct you= r fax to Technical Support.

= E-mail: support@vesa.org

= Mail: <= /span>= VESA

&n= bsp; 860 Hillview Court, Ste. 150

&n= bsp; Milpitas, CA 95035<= /span>

= Acknowledgments

Thanks to the following individuals and companies for their contributions to this standard:

Dave Milici -- StereoGraphics Corp.&= nbsp; &nbs= p; &= nbsp; Anders Frisk -- Fujitsu ICL

Richard DeHoff -- NuVision = &nb= sp; = Tom Ryan -- SciTech Software

David Qualman -- NuVision = &nb= sp; = A= lain D’Hautecourt -- View= sonic

Greg Marshall -- Canopus = &nb= sp; = Hans van der Ven -- Pana= sonic

Greg Hamlin -- VRex &= nbsp; &nbs= p; &= nbsp; &nbs= p; Jack Hosek -- NEC Technologies

Bob Myers

Hewlett-Packard Co.

Stereo Workgroup Leader

VESA Monitor Committee