Head position and orientation sensor

Details Head position and orientation sensor Head position and orientation sensor

1981-12-14

1984-05-01

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358237, 434 22, 434 40, 434 44, 364449, 364559, H04M 718

Patent

active

044464800

ABSTRACT:
A head position and orientation sensor system utilizes a head mounted protor of known scan pattern which presents a visual display to the observer. In order to maintain proper display orientation, the head position and orientation are measured by intercepting the projected light scan pattern at a retroreflective screen upon which the visual display is focused. A photodetector array mounted in said screen intercepts the visual display regardless of head orientation and position. A computational unit having knowledge of the scan pattern parameters correlates the photodetector array output to a unique head position and orientation.

REFERENCES:
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patent: 3784742 (1974-01-01), Burnham et al.
patent: 3892051 (1975-07-01), Bunker
patent: 4027403 (1977-06-01), Marsh et al.
patent: 4048653 (1977-09-01), Spooner
patent: 4085425 (1978-04-01), Hamill
patent: 4103435 (1978-08-01), Herndon
patent: 4164081 (1979-08-01), Berke
patent: 4177579 (1979-12-01), Peters
patent: 4209255 (1980-06-01), Heynau

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