Head tracking apparatus
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United States of America Patent
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-
Dec 20, 1994
Grant Date -
N/A
app pub date -
Jun 18, 1993
filing date -
Jun 18, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A low cost head tracker for a virtual reality head set for determining the orientation of the head set relative to the earth's magnetic field includes a magnetic sensor responsive to the earth's magnetic field, and disposed on the head set and arranged with respect to a vertical axis of rotation of the head set to produce a displacement signal relative to the angular displacement of the head set with respect to a calibration orientation relative to the earth's magnetic field, and a signal processor connected to the magnetic sensor, and responsive to the electrical displacement signal for producing an output signal proportional to the orientation of the head set relative to the calibration orientation.
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