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US 10,481,681 B2Granted
Current drain reduction in AR/VR display systems
AssigneeMagic Leap, Inc.
InventorTal Mor
Life of this patent
Estimating the term…
Abstract
In some embodiments, eye tracking is used on an AR or VR display system to determine if a user of the display system is blinking or otherwise cannot see. In response, current drain or power usage of a display associated with the display system may be reduced, for example, by dimming or turning off a light source associated with the display, or by configuring a graphics driver to skip a designated number of frames or reduce a refresh rate for a designated period of time.
Claims36
A display system with reduced power use, comprising:
- an inward-facing sensor;
- a display comprising a light source;
- and
- processing electronics in communication with the inward-facing sensor and the display, the processing electronics configured to:
- detect a first change in a user's eye status using the inward-facing sensor, the first change comprising an indication associated with a closed state of the user's eyes,
- detect a second change in a user's eye status, the second change comprising an indication associated with an open state of the user's eyes,
- reduce a current drain of the display system in response to detecting the first change in the user's eye status, wherein reducing the current drain of the display comprises dimming the light source of the display without turning off the light source, and
- increase a current drain of the display system in response to the detected second change in the user's eye status,
- wherein the first and second changes in the user's eye status is a blink.
6 more elements
A method for reducing power use of a display system, comprising:
- detecting a first change in a user's eye status using an inward-facing sensor, the first change comprising an indication associated with a closed state of the user's eyes,
- detecting a second change in a user's eye status, the second change comprising an indication associated with an open state of the user's eyes,
- reducing a current drain of the display system in response to detecting the first change in the user's eye status, wherein reducing the current drain of the display comprises dimming a light source of the display without turning off the light source, and
- increasing a current drain of the display system in response to detecting the second change in the user's eye status,
- wherein the first and second changes in the user's eye status is a blink.
2 more elements
A display system with reduced power use, the display system comprising:
- an inward-facing sensor;
- a head-mounted display configured to be worn by a user and disposed on a frame configured to support said display thereon, said display configured to project light into said user's eye to display augmented reality image content to the user's vision field, at least a portion of said display being transparent and disposed at a location in front of the user's eye when the user wears the frame such that said transparent portion transmits light from a portion of an environment in front of the user and said head-mounted display to the user's eye to provide a view of said portion of the environment in front of the user and said head-mounted display;
- and
- processing electronics in communication with the inward-facing sensor and the display, the processing electronics configured to:
- detect a first change in a user's eye status using the inward-facing sensor, the first change comprising an indication associated with a closed state of the user's eyes,
- detect a second change in a user's eye status, the second change comprising an indication associated with an open state of the user's eyes, and
- reduce a current drain of the display system in response to the change in the user's eye status, wherein reducing the current drain of the display comprises configuring a graphics driver associated with the display to reduce an amount of power consumed by the display without turning off the display.
4 more elements
A method for reducing power use of a display system, comprising:
- detecting a first change in a user's eye status using an inward facing sensor, the first change comprising an indication associated with a closed state of the user's eyes,
- detecting a second change in a user's eye status, the second change comprising an indication associated with an open state of the user's eyes,
- reducing a current drain of the display system in response to detecting the first change in the user's eye status, wherein reducing the current drain of the display comprises configuring a graphics driver associated with a display to reduce an amount of power consumed by the display without turning off the display, and
- increasing a current drain of the display system in response to detecting the second change in the user's eye status.
1 more element
A method for reducing power use of a display system, comprising:
- detecting a first change in a user's eye status using an inward-facing sensor, the first change comprising an indication associated with a closed state of the user's eyes,
- detecting a second change in a user's eye status, the second change comprising an indication associated with an open state of the user's eyes,
- reducing a current drain of the display system in response to detecting the first change in the user's eye status, wherein reducing the current drain of the display comprises skipping a designated number of frames, the designated number of frames based upon a length of time that the user is unable to see, and
- increasing a current drain of the display system in response to detecting the second change in the user's eye status.
1 more element
A display system with reduced power use, comprising:
- an inward-facing sensor;
- a display;
- and
- processing electronics in communication with the inward-facing sensor and the display, the processing electronics configured to:
- detect a first change in a user's eye status using the inward-facing sensor, the first change comprising an indication associated with a closed state of the user's eyes,
- detect a second change in a user's eye status, the second change comprising an indication associated with an open state of the user's eyes,
- reduce a current drain of the display system in response to detecting the first change in the user's eye status, wherein reducing the current drain of the display comprises skipping a designated number of frames, the designated number of frames based upon a length of time that the user is unable to see, and
- increase a current drain of the display system in response to the detected second change in the user's eye.
5 more elements
A method for reducing power use of a display system, comprising:
- detecting a first change in a user's eye status using an inward-facing sensor, the first change comprising an indication associated with a closed state of the user's eyes,
- detecting a second change in a user's eye status, the second change comprising an indication associated with an open state of the user's eyes,
- reducing a current drain of the display system in response to detecting the first change in the user's eye status, wherein reducing the current drain of the display comprises reducing a refresh rate associated with the display without turning off the display, and
- increasing a current drain of the display system in response to detecting the second change in the user's eye status.
1 more element
A display system with reduced power use, comprising:
- an inward-facing sensor;
- a display;
- and
- processing electronics in communication with the inward-facing sensor and the display, the processing electronics configured to:
- detect a first change in a user's eye status using the inward-facing sensor, the first change comprising an indication associated with a closed state of the user's eyes,
- detect a second change in a user's eye status, the second change comprising an indication associated with an open state of the user's eyes,
- reduce a current drain of the display system in response to detecting the first change in the user's eye status, wherein reducing the current drain of the display comprises reducing a refresh rate associated with the display without turning off the display, and
- increase a current drain of the display system in response to the detected second change in the user's eye status.
5 more elements
Dependencies are inferred from the claim text.