Interface between host processor and wireless processor for artificial reality
Granted: April 26, 2022
Patent Number:
11314320
Disclosed herein are devices and methods related to an interface between a host processor and a wireless processor of a first device for maintaining an artificial reality session with a second device. In one aspect, the host processor is configured to provide data of the artificial reality session to the wireless processor, and the wireless processor is configured to transmit the data to the second device through a wireless medium. In one aspect, the host processor is configured to…
Light guide display assembly for providing expanded field of view
Granted: April 26, 2022
Patent Number:
11314093
A device includes one or more light guides. The device also includes a first in-coupling element configured to couple a first light having a first input field of view (“FOV”) into a first light guide, and a second in-coupling element configured to couple a second light having a second input FOV into a second light guide. The device also includes a first out-coupling element configured to couple the first light out of the first light guide as a first output light having a first output…
Ambient light eye illumination for eye-tracking in near-eye display
Granted: April 19, 2022
Patent Number:
11307654
Techniques disclosed herein relate to eye illumination for eye tracking in a near-eye display system. One example of an eye illumination system includes a substrate transparent to visible light and infrared light and configured to be placed in front of an eye of a user, and a shortwave-pass filter on a first surface of the substrate. The shortwave-pass filter includes regions configured to transmit visible light and reflect infrared light in ambient light, and a plurality of windows…
Systems and methods for maintaining directional wireless links of motile devices
Granted: April 19, 2022
Patent Number:
11309947
The disclosed computer-implemented method may include (1) establishing a directional wireless link between a first computing device and a second computing device in a first direction, (2) exchanging, over the directional wireless link in the first direction, first data between the first computing device and the second computing device, (3) determining, via a sensor of the first computing device, a change to a position or an orientation of the first computing device, (4) redirecting,…
Micro-LED design for chief ray walk-off compensation
Granted: April 19, 2022
Patent Number:
11309464
Techniques disclosed herein relate to micro light emitting diodes (micro-LEDs) for a display system. A display system includes an array of micro light emitting diodes (micro-LEDs), an array of output couplers optically coupled to the array of micro-LEDs and configured to extract light emitted by respective micro-LEDs in the array of micro-LEDs, a waveguide display, and display optics configured to couple the light emitted by the array of micro-LEDs and extracted by the array of output…
Systems and methods for reducing wind noise
Granted: April 19, 2022
Patent Number:
11308972
The disclosure is generally directed to a system for reducing wind noise. A system includes one or more processors coupled to a non-transitory computer-readable storage medium having instructions encoded thereon that, when executed by the one or more processors, cause the one or more processors to obtain signals respectively generated from two or more microphones during a time period, the signals representing acoustic energy detected by the two or more microphones during the time period,…
Display artifact reduction
Granted: April 19, 2022
Patent Number:
11308920
In one embodiment, a computing system may access an image to be displayed by a display. The system may determine one or more characteristics associated with a content of the image. The one or more characteristics may include a spatial frequency of the content in a spatial frequency domain. The system may determine a display persistence time period for the display to display the image based on the one or more characteristics associated with the content of the image. The system may…
Using deep learning to determine gaze
Granted: April 19, 2022
Patent Number:
11308698
In one embodiment, a computing system may generate and display a virtual reality environment to a user. The computing system may determine a head pose of the user based on headset tracking data associated with a headset worn by the user. The computing system may determine a hand pose of the user based on hand tracking data associated with a device held or worn by a hand of the user. The computing system may access scene information associated with the displayed virtual reality…
Display engine for post-rendering processing
Granted: April 19, 2022
Patent Number:
11308681
In one embodiment, a method includes, generating rays for casting into an artificial reality scene that includes one or more surfaces to determine whether the one or more surfaces are visible from a viewpoint. An origin and a trajectory of each ray are based on the viewpoint. The method includes applying a geometric transformation to the rays to modify their respective trajectory into the artificial reality scene. The geometric transformation is based on one or more distortion…
Smart cameras enabled by assistant systems
Granted: April 19, 2022
Patent Number:
11308284
In one embodiment, a method includes receiving a user input from a user from a client system associated with the user, wherein the client system comprises one or more cameras, determining one or more points of interest in a field of view of the one or more cameras based on one or more machine-learning models and sensory data captured by the one or more cameras, generating a plurality of media files based on the one or more points of interest, wherein each media file is a recording of at…
Artificial reality triggered by physical object
Granted: April 19, 2022
Patent Number:
11307647
This disclosure describes an artificial reality system that presents artificial reality content or artificial reality effects based on, or in response to, interactions with one or more physical objects within a physical environment. In one example, this disclosure describes a method that includes determining that a user has performed a trigger action on a trigger object; responsive to determining that the user has performed the trigger action, generating artificial reality content;…
Head mounted display with active optics feedback and calibration
Granted: April 19, 2022
Patent Number:
11307415
An optical system for a head mounted display (HMD) includes a display layer, an illumination layer, an optical combiner, and an active optics block. The display layer is configured to emit display light and the illumination layer includes an array of point light sources configured to emit calibration light. The optical combiner is configured to pass the display light to a front side of the optical system and to direct the calibration light to a camera. The active optics block includes an…
Overcoating slanted surface-relief structures using atomic layer deposition
Granted: April 19, 2022
Patent Number:
11307357
Techniques for overcoating slanted structures and devices obtained using the techniques are disclosed. In some embodiments, a method of forming an overcoat layer on a surface-relief structure on a substrate includes receiving the substrate with the surface-relief structure. The surface-relief structure includes a plurality of ridges slanted with respect to the substrate, and a plurality of grooves each between two adjacent ridges. The method further includes depositing, in each cycle of…
Display illumination using a wedge waveguide
Granted: April 19, 2022
Patent Number:
11307347
A device for illuminating a spatial light modulator includes a light source and an optical element. The light source is configured to provide illumination light. The optical element has a first surface, a second surface that is distinct from and non-parallel to the first surface, and a third surface that is distinct from and non-parallel to the first surface and the second surface. The optical element is configured to receive the illumination light at the first surface, propagate the…
Resonant accelerometer
Granted: April 19, 2022
Patent Number:
11307217
Described herein are accelerometers, apparatus and systems incorporating accelerometers, and techniques for controlling sensing operations in an accelerometer. In certain embodiments, an accelerometer is a microelectromechanical systems (MEMS) device including a proof mass, an anchor, a spring between the proof mass and the anchor, a drive electrode, and a sense beam. The anchor is located in an opening defined by a body of the proof mass. The spring and the proof mass form a spring…
Methods for forming ordered and disordered nanovoided composite polymers
Granted: April 19, 2022
Patent Number:
11306193
A method of forming a nanovoided composite polymer includes forming a resin-containing layer over a substrate, the resin-containing layer including a polymer-forming phase and a sacrificial phase, curing the polymer-forming phase to form a polymer matrix containing the sacrificial phase, and removing the sacrificial phase selectively with respect to the polymer matrix to form a nanovoided composite polymer including the polymer matrix and nanovoids dispersed throughout the polymer…
Capacitive sensing assembly for detecting proximity of user to a controller device
Granted: April 19, 2022
Patent Number:
11305180
A capacitive sensing assembly comprises a nonconductive interface material, a conductive plastic, an electrode, and a controller. The capacitive sensing assembly is configured to detect a proximity of skin to the nonconductive interface material. The nonconductive interface material comprises a first surface and a second surface that are opposite one another. The first surface receives contact with the skin. The conductive plastic is coupled to the second surface of the interface…
Polarization sensitive optical diffuser
Granted: April 12, 2022
Patent Number:
11300833
An optical diffuser includes optically anisotropic molecules arranged in a predefined configuration such that the optical diffuser diffuses first light having a first polarization and transmits second light having a second polarization that is different from the first polarization upon receiving the second light. In addition to polarization selectivity, the optical diffuser may also exhibit wavelength selectivity and/or incident angle selectivity. A method of diffusing light using the…
Power efficient multiply-accumulate circuitry
Granted: April 12, 2022
Patent Number:
11301545
Disclosed herein includes a system, a method, and a device for multiply-accumulate operation. In one aspect, an input operand is received by control circuitry. In one aspect, the control circuitry determines a sparsity of the input operand, where the sparsity may indicate whether a value of the input operand has a predetermined value or not. In one aspect, the control circuitry determines a stationarity of the input operand, where the stationarity may indicate whether the value of the…
Artificial-reality headset assembly with back-of-the-head battery
Granted: April 12, 2022
Patent Number:
11300999
An artificial-reality headset assembly includes an artificial-reality headset, a battery pack, and a plurality of head straps. One end of each of the head straps is coupled to the artificial-reality headset and the respective opposite end is coupled to the battery pack. The plurality of head straps includes one or more side straps configured to be worn around a user's head. The battery pack is located in proximity to a posterior portion of the user's head when the artificial-reality…
