Mark A Ericson

US Patent:

58548432, Dec 29, 1998

Filed:

Dec 18, 1996

Appl. No.:

8/769294

Inventors:

Lawrence Jacknin - Yellow Springs OH
Mark A. Ericson - Columbus OH

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

H04R 500

US Classification:

381 25

Abstract:

A position tracker uses an inertial angular measurement system, for measuring orientation and linear translation of a helmet on a human head for the synthesis by a host computer of virtual, directional audio over headphones sensors mounted on the helmut, includes a roll gyro sensor, a pitch gyro sensor, a yaw gyro sensor, an absolute roll tilt sensor coupled to a first universal signal conditioner, an absolute pitch tilt sensor coupled to a second universal signal conditioner, and an absolute yaw compensator. A data acquisition system is coupled between the sensors and the host computer for converting analog signals from the sensors into digital, angular orientation data. Each of the gyro sensors includes angular velocity detectors and solid state electronic devices connected to provide angular velocity signals at a given sample rate.