Systems and methods for using multiple MEMS projectors to determine a position of a photosensor of an HMD or another controller
AssigneeSony Interactive Entertainment Inc.
InventorDominic Mallinson
Life of this patent
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Abstract
A method for determining an orientation of a photosensor of a controller with respect to a projector is described. The method includes generating, by a beam generator of the projector, a beam. The method further includes modifying a direction of travel of the beam using a micro-electro-mechanical systems (MEMS) mirror that moves in a pattern, detecting the beam, calculating a time at which the beam is detected, and determining based on the pattern and the time an orientation of the beam to determine the orientation of the photosensor.
Claims21
A method for determining a position of a photosensor on a head-mounted display with respect to a projector, comprising:
- detecting, by the photosensor, a beam that is reflected from a mirror moving in a pattern, wherein the mirror is located within the projector;
- calculating a time of hit at which the beam is detected;
- determining based on the time of hit a location within the pattern at which the hit occurs;
- detecting, by the photosensor, an additional beam that is reflected from an additional mirror moving in an additional pattern;
- calculating an additional time of an additional hit at which the additional beam is detected;
- determining based on the additional time of hit an additional location within the additional pattern at which the additional hit occurs;
- and
- determining the position of the photosensor with respect to the projector based on the location within the pattern and the additional location within the additional pattern.
A system for determining a position of a photosensor on a head-mounted display with respect to a projector, comprising:
- the head-mounted display including the photosensor configured to detect a beam that is reflected from a mirror moving in a pattern, wherein the mirror is located within the projector,
- a computer coupled to the head-mounted display, wherein the computer is configured to determine based on a time of hit of the beam a location within the pattern at which the hit occurs,
- wherein the photosensor is configured to detect an additional beam that is reflected from an additional mirror moving in an additional pattern,
- wherein the computer is configured to calculate an additional time of an additional hit at which the additional beam is detected,
- wherein the computer is configured to determine based on the additional time of hit an additional location within the additional pattern at which the additional hit occurs, and
- wherein the computer is configured to determine the position of the photosensor with respect to the projector based on the location within the pattern and the additional location within the additional pattern.
A system for determining a position of a photosensor on a head-mounted display with respect to a projector, comprising:
- the projector configured to generate a beam, wherein the projector includes a mirror configured to move in a pattern;
- an additional projector configured to generate an additional beam, wherein the additional projector includes an additional mirror configured to move in an additional pattern;
- the head-mounted display including the photosensor configured to detect the beam that is reflected from the mirror;
- a computer coupled to the head-mounted display, wherein the computer is configured to determine based on a time of hit of the beam that is detected a location within the pattern at which the hit occurs,
- wherein the photosensor is configured to detect the additional beam that is reflected from the additional mirror,
- wherein the computer is configured to calculate an additional time of an additional hit at which the additional beam is detected,
- wherein the computer is configured to determine based on the additional time of hit an additional location within the additional pattern at which the additional hit occurs, and
- wherein the computer is configured to determine the position of the photosensor with respect to the projector based on the location within the pattern and the additional location within the additional pattern.
Dependencies are inferred from the claim text.