91-11/EnglandU.info
From: rhys@ecs.soton.ac.uk (Richard So)
Subject: Time delays in head-coupled system
Date: 7 Nov 91 14:25:34 GMT
Message-ID: <9388@ecs.soton.ac.uk>
Organization: University of Southampton, England



Hello,

  My name is Richard So and my research interest is to optimise the reponse of head-coupled systems (helmet-mounted displays & head trackers) during 
dynamic head movements.

  In article <1991Oct9.9897@umd5.umd.edu>,jaikin@umd5.umd.edu(Jeff Aikin) 
writes:

> There was a demonstration recently in the CompSci dept. at the University
> of Maryland where they used a Data Glove, a small stero-vision headset and
> a 386 based PC to run complete VR environment. Apparently, these research
> showed that a quick response time wasmuch more important than realistic
> images ................

  Our research showed that an additional time delay equal to, or greater than,
40ms in a head-coupled system with 40ms inherent reponse time may produce 
significant degradation in head-tracking performance.  As a research unit, we 
also conduct studies on combine head and eye tracking, head tracking, and 
virtual hand tracking. Members of the unit have investigated the effects of 
vibration on helmet-mounted displays and helmet-mounted sight. Stablisation 
techniques have been developed to overcome vibration problems.

  Currently, I am looking into the head tracker called 'The Bird' from 
Ascension Technology Corporation. Could anyone tell me how much does it cost ?

  Most of the findings from our research are published, if you want 
publications of some particular topics, please don't hesitate to contact me:

Richard So
Human Factors Research Unit,
Institute of Sound and Vibration Research,
The University,
University road,
Southampton SO9 5NH,
England.
FAX England-(0)703-593033