System for using digital light projectors for augmented reality
AssigneeSnap Inc.
InventorsJeffrey Michael DeWall, Dominik Schnitzer, Amit Singh, Daniel Wagner
Life of this patent
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Abstract
A method for configuring a digital light projector (DLP) of an augmented reality (AR) display device is described. A light source component of the DLP projector is configured to generate a single red-green-blue color sequence repetition per image frame. The AR display device identifies a color sequence of the light source component of the DLP projector and tracks a motion of the AR display device. The AR display device adjusts an operation of the DLP projector based on the single red-green-blue color sequence repetition, the color sequence of the light source component of the DLP projector, and the motion of the AR display device.
Claims20
A method for reducing motion artifacts in a digital light processing (DLP) projector of an augmented reality (AR) display device, the method comprising:
- identifying a default pixel persistence time for the DLP projector;
- predicting a motion of the AR display device using sensor data;
- configuring the DLP projector to display only one color per color cycle in each image frame;
- dynamically adjusting a pixel persistence time of the DLP projector from the default pixel persistence time to a reduced pixel persistence time in response to the predicted motion, wherein the reduced pixel persistence time is less than the default pixel persistence time;
- and
- controlling the DLP projector to display black for a predetermined portion of each image frame, such that black is displayed for at least 50% of the frame time.
An AR display device comprising:
- a DLP projector;
- a processor;
- and
- a memory storing instructions that, when executed by the processor, configure the AR display device to perform operations comprising:
- identifying a default pixel persistence time for the DLP projector;
- predicting a motion of the AR display device using sensor data;
- configuring the DLP projector to display only one color per color cycle in each image frame;
- dynamically adjusting a pixel persistence time of the DLP projector from the default pixel persistence time to a reduced pixel persistence time in response to the predicted motion, wherein the reduced pixel persistence time is less than the default pixel persistence time;
- and
- controlling the DLP projector to display black for a predetermined portion of each image frame, such that black is displayed for at least 50% of the frame time.
A non-transitory computer-readable storage medium, the computer-readable storage medium including instructions that when executed by a computer, cause the computer to perform operations comprising:
- identifying a default pixel persistence time for a DLP projector;
- predicting a motion of an AR display device using sensor data;
- configuring the DLP projector to display only one color per color cycle in each image frame;
- dynamically adjusting a pixel persistence time of the DLP projector from the default pixel persistence time to a reduced pixel persistence time in response to the predicted motion, wherein the reduced pixel persistence time is less than the default pixel persistence time;
- and
- controlling the DLP projector to display black for a predetermined portion of each image frame, such that black is displayed for at least 50% of the frame time.
Dependencies are inferred from the claim text.