Abstract: A head-mounted device (HMD) of a first user has a transparent display. The HMD determines location information of a second user relative to the HMD of the first user. The second user is located within a predefined distance of the HMD. The location information identifies a distance and a direction of the second user relative to the HMD. The HMD receives audio content from the second user, generates augmented reality (AR) content based on the audio content, and displays the AR content in the transparent display based on the location information of the second user. The AR content appears coupled to the second user.

Abstract: An optical subassembly for switchably focusing or redirecting a light beam may include a polarization element having a polarization-selective beam redirection/focusing property, a first switchable polarization rotator upstream of the polarization element, and a second switchable polarization rotator downstream of the polarization element. A polarizer may be provided immediately downstream of the second switchable polarization rotator. The first and second switchable polarization rotators may be operated in counterphase, so as to mutually offset dependence of angle and wavelength characteristics of the polarization rotators on the switching state of the polarization rotators.

Abstract: An illuminator for a display panel includes a slab of transparent material for propagating illuminating light between outer surfaces of the slab, an out-coupling grating supported by the slab for out-coupling portions of the illuminating light along one of the outer surfaces of the slab, and an amplitude and/or phase mask for forming an array of light spots from the out-coupled illuminating light portions downstream of the focusing element for illuminating pixels of the display panel. The array of light spots may be repeated at a distance from the mask due to Talbot effect. A beam redirecting element such as a tiltable reflector and/or a steering surface may be provided to shift the lateral location of the illuminating light spots.

Abstract: Systems and methods are provided for using a gesture detected at a wrist-wearable device to cause presentation of camera data at a head-wearable device. One example method includes receiving, via one or more sensors of a wrist-wearable device worn by a user, data generated based on performance of an in-air hand gesture by the user. In accordance with a determination that the data indicates that the in-air hand gesture is a camera-control gesture, the method further includes causing presentation to the user, via a display of a head-wearable device that is worn by the user and that is in communication with the wrist-wearable device, of a representation of camera data from a camera that is in communication with one or both of the wrist-wearable device and the head-wearable device.

Abstract: A device includes a display configured to generate an image light. The device also includes a waveguide optically coupled with the display and configured to guide the image light to an exit pupil of the device. The waveguide includes a grating including a birefringent material, and a birefringence of the grating is configured to increase along a pupil-expanding direction of the device.

Abstract: Systems, methods, and devices for responder passive mode operation may include a target wake time (TWT) scheduling device which generates a broadcast TWT element, the broadcast TWT element including a control field including a responder passive mode (PM) mode sub-field. The TWT scheduling device may transmit the broadcast TWT element to one or more TWT scheduled devices within a basic service set (BSS) of the TWT scheduling device.

Abstract: An approach for heat management in wearable devices is provided. One or more vibration enhanced convection heat transfer surfaces may be incorporated to exterior surfaces of a wearable device. A controller may take into account ambient temperature, available power expected power consumption by the vibration enhanced convection heat transfer surface(s), and/or expected heat reduction, and activate the vibration enhanced convection heat transfer surface(s) to expel heat from the wearable device. Operational parameters of the vibration enhanced convection heat transfer surface(s) such as a frequency and/or an amplitude of vibration may also be determined and set based on the internal and external factors including a shape, a location, and/or a size of the vibration enhanced convection heat transfer surface(s).

Abstract: Systems and methods for frequency sharing may include a first wireless personal area network (WPAN) device which establishes a connection with a second WPAN device. The connection may include a plurality of WPAN channels established in a frequency range which includes one or more channels reserved for wireless local area network (WLAN) communication. The first WPAN device may transmit data via one or more of the plurality of WPAN channels, to the second WPAN device.

Abstract: Systems, methods, and devices for wireless sidelink operations may include a first device including a transceiver and one or more processors configured to configure a transmission power for a wireless sidelink (SL) transmission of a SL connection with a second device, where the transmission power is configured to be greater than a minimum transmission power. The one or more processors may transmit, via the transceiver, the wireless SL transmission to the second device according to the configured transmission power.

Abstract: An optical assembly to be used in a head-mounted display (HMD) device or similar may include a first optical component and a second optical component, where the first optical component and the second optical component are layered in the optical assembly. The optical assembly may also include a waveguide positioned between the first optical component and the second optical component. One or more shock absorbers may be positioned on surfaces of the first optical component and the second optical component facing the waveguide. The shock absorbers may be a support that touches a surface of the waveguide or a stand-off that extends toward the waveguide with a gap. The shock absorbers may also include a pillar, a cone, an inverted cone, an inverted pillar, a spring, a double helix, a three-dimensional mesh, a strap, a bumper, a sphere, or a high aspect ratio 3D mesh tower.

Abstract: In one aspect, the systems and methods may automatically trigger ranging include a device which may establish a connection between a first device comprising a first ultra-wideband (UWB) antenna and a second device having a second UWB antenna. The device may receive from one or more motion sensors of the first device, motion data of the first device during an inactive ranging phase. The device may determine to switch from the inactive ranging phase to an active ranging phase responsive to the motion data indicating motion of the first device satisfying a threshold criteria. The device may perform a first ranging operation between the first device and the second device using the first UWB antenna of the first device and the second UWB antenna of the second device, responsive to switching from the inactive ranging phase to the active ranging phase.

Abstract: Systems, methods, and devices authenticate processor instructions stored by a read-only memory (ROM). In one example, a ROM stores a block of register words. The block of register words includes a first register word specifying an authentication tag and one or more register words that each specify an instruction. A security controller identifies the first register word as specifying the authentication tag and performs authentication of the authentication tag. Upon successfully authenticating the authentication tag, the security controller forwards the register words that each specify instructions to a processor for execution. Upon unsuccessfully authenticating the authentication tag, the security controller blocks the register words that each specify instructions from execution by the processor.

Abstract: Techniques for adaptively visualizing content in an artificial environment based on the attention of a user. In one particular aspect, a computer-implemented method is provided that includes obtaining input data from a user, inferring content that is of interest to the user based on features gathered from the user's attention in the input data, identifying virtual content data based on the content that is of interest to the user, determining modifications to be applied to the virtual content data based on relevancy, applying the modifications to the virtual content data to generate a final format for the virtual content data, and rendering virtual content in the extended reality environment displayed to the user based on the final format for the virtual content data. The virtual content rendered from relevant virtual content data is more prominently displayed as compared to the virtual content rendered from semi-relevant and non-relevant virtual content data.

Abstract: An acoustic device with a manifold architecture is described. The acoustic device includes a primary waveguide and a manifold. The primary waveguide has a first end, coupled to an acoustic sensor, and a second end, a port open to a local area. The port receives airflow from the local area that includes sound pressure waves from a sound source and turbulent pressure waves. The sound pressure waves and a first portion of the turbulent pressure waves are detected by the acoustic sensor. The manifold includes a plurality of waveguides that are coupled to a portion of the primary waveguide between the first end and second end. The plurality of waveguides has openings to the local area. The manifold vents a second portion of the turbulent pressure waves through the openings, and the second portion of the turbulent pressure waves is larger than the first portion of the turbulent pressure waves.

Abstract: Systems and methods are provided for determining when to present video data via a head-worn wearable device. A head-wearable device includes a display, one or more processors, and memory. The memory includes instructions that, when executed by the one or more processors, cause a head-wearable device, when worn, to detect an electronic device associated with a user of the head-wearable device. The instructions, when executed by the one or more processors, further cause the head-wearable device, when worn, to in accordance with a determination that the electronic device is in proximity to the head-wearable device and presenting video data, and further in accordance with a determination that sensor data received at the head-wearable device indicates that a video-viewing precondition is present, cease to cause presentation of the video data at the electronic device, and cause the presentation of the video data at the display of the head-wearable device.

Abstract: When a notification is to be shown, an artificial reality notification system can add the notification to a pre-defined location in the user's field of view (e.g., top, side, or bottom) where it stays as a head leashed virtual object until the user's gaze is direct to the notification. When the user's gaze is directed at the notification, the artificial reality notification system can make the notification world locked, allowing the user to move her head to bring the notification to the center of her field of view, move closer to the notification to make it larger, move around the notification to see aspects from different angles, etc. The notification can be dismissed if the user never directs her gaze at it for a first threshold amount of time or when the user looks away from the world-locked version for a second threshold amount of time.

Abstract: Embodiments relate to an audio system that performs equalization of audio signals based on one or more diffuse field head-related transfer functions (HRTFs) and device-specific data. User-specific data and device-specific data (i.e., transducer-specific data) are applied to an acoustic model to predict an acoustic response for a user. An equalization filter is then determined using the acoustic response and the one or more diffuse field HRTFs. The equalization filter is applied to a processed version of an audio signal to create a modified version of the audio signal. The modified version of the audio signal is presented to the user via a transducer array of the audio system. The audio system can further include a microphone assembly that reduces the Helmholtz resonance effect.

Abstract: 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; presenting the artificial reality content on a display associated with a head-mounted display; determining that the user has performed a de-trigger action; and responsive to determining that the user has performed the de-trigger action, discontinuing presentation of the artificial reality content.

Abstract: In holographic calling, it is difficult to capture the eyes of a caller due to lighting effects on an artificial reality (XR) headset. However, it can be important to capture the eyes when rendering the caller as they can show emotion, gaze, physical characteristics, etc., that aid in natural communication. Thus, implementations can capture the eyes of the caller using an external image capture device by briefly turning off the lighting effects on the XR headset. Some implementations can trigger the image capture device to capture an image of the eyes by temporal multiplexing in which timers on both the image capture device and the XR headset are synchronized. In other implementations, the image capture device can be an event-based camera that is automatically triggered to capture an image of the eyes based on a detected pixel change caused by deactivation of the lighting effects on the XR headset.

Abstract: An apparatus, system, and method for a waveguide system may be used to support eye tracking in a head mounted display (HMD). The waveguide system may be positioned in a user's field of view and within a lens assembly of the HMD to capture light that is reflected from an eye. The waveguide system may have a number of multi-directional gratings configured to direct light to an out-coupling grating. The multi-directional gratings include first and second in-coupling diffraction gratings disposed in a waveguide. The first and second in-coupling diffraction gratings are oriented to direct incident light in multiple directions within the waveguide towards the out-coupling diffraction grating.