×

Head tracker system

  • US 6,377,401 B1
  • Filed: 08/14/2000
  • Issued: 04/23/2002
  • Est. Priority Date: 07/28/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A head tracker system for determining a user'"'"'s head orientation relative to a datum comprising:

  • a head mounting for attachment to the user'"'"'s head and a sensor system for sensing the orientation of the head mounting relative to the datum;

    characterised by a distinguishable marking and an optical sensor designed in use to be fixed respectively relative to a first known point fixed relative to the head mounting and a second known point fixed relative to the datum or vice versa and processing means for determining when the marking is within the field of view of the optical sensor and wherein the output of the processing means is used to correct for drift in the sensor system or to provide an independent verification that the system is functioning within preselected tolerances.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×