Abstract: Systems, methods, and devices for managing target wake time (TWT) schedules may include a first device of a wireless local area network (WLAN) which receives information relating to drift of a start time of a target wake time (TWT) schedule from a second device of the WLAN. The first device may modify a start time for a subsequent TWT service period, according to the information relating to the drift of the start time from the second device.

Abstract: Aspects of the present disclosure can trigger an action based on a motion detected by an artificial reality (XR) device, such as a head-mounted display (HMD). The XR device can display an XR experience to a user. While displaying the XR experience, the XR device can detect a physical interaction with the XR device using one of more sensors (e.g., sensors of an inertial measurement unit (IMU)). The physical interaction can generate a movement profile captured by the one or more sensors. The XR device can identify the physical interaction as a particular motion (e.g., one or more taps on the XR device) by applying a machine learning model to the movement profile. In response to identifying the particular motion, the XR device can trigger an action on the XR device (e.g., activating pass-through on the XR device).

Abstract: An example optical substrate, according to aspects of the present disclosure, includes a support structure, a plurality of lenses, and a plurality of flexures. Each flexure is engaged with the support structure and a respective lens for allowing independent lateral movements of the lenses during assembly of the optical substrate with another layer of an optical assembly. A first lateral movement provided by a first flexure of the plurality of flexures during the assembly is different from a second lateral movement provided by a second flexure of the plurality of flexures.

Abstract: Aspects of the disclosure are directed to an interface for receiving input using multiple modalities in an artificial reality environment. The interface can be a virtual keyboard displayed in an artificial reality environment that includes characters arranged as elements. Implementations include an artificial reality device/system for displaying the artificial reality environment and receiving user input in a first modality, and a controller device for receiving user input in an additional input modality. For example, the artificial reality system can be configured to receive user gaze input as a first input modality and the controller device can be configured to receive input in a second modality, such as touch input received at a trackpad. An interface manager can process input in the multiple modalities to control an indicator on the virtual interface. The interface manager can also resolve character selections from the virtual interface according to the input.

Abstract: An administered authentication system can authenticate an artificial reality device using an authorization record between a user account and an artificial reality device. In some implementations, the authorization record is created in response to activation of a user account-specific key sent to a user-supplied contact, where an artificial reality device identifier was provided with the user-supplied contact. In other implementations, the authorization record is created in response to activation of a user account-specific key provided to the artificial reality device as a code, where activation of the key includes adding an artificial reality device identifier to a key activation message. In yet other implementations, the authorization record is created in response to an application associated with a user account activating an artificial reality device-specific key, with an artificial reality device identifier, that is provided via the artificial reality device.

Abstract: The disclosed system may include a frame, a printed circuit board (PCB) mounted to the frame, and at least one antenna electrically connected to the PCB via an antenna feed. The antenna may be shorter than a maximum specified length, and the antenna may be intended to operate within a specified frequency range for which the antenna's length is insufficiently long. Still further, in this system, electrical current flowing to the antenna may be routed to at least a portion of the frame to create a parasitic arm. As such, the parasitic arm may radiate in conjunction with the antenna, providing constructive interference in the specified frequency range. Various other mobile electronic devices, apparatuses, and methods of manufacturing are also disclosed.

Abstract: In some examples, a sensor apparatus comprises: an array of pixel cells each including one or more photodiodes configured to generate a charge in response to light, and a charge storage device to convert the charge to output a voltage of an array of voltages, one or more an analog-to-digital converter (ADC) configured the convert the array of voltages to first pixel data, and an on-sensor controller configured to input the first pixel data into a machine-learning model to generate output data comprising prediction data associated with one or more features of the first pixel data, generate, based on the prediction data, second pixel data, the second pixel data associated with one or more transformed features of the first pixel data, and send, from the sensor apparatus to a separate receiving apparatus, the second pixel data.

Abstract: Adaptive cross-layer power, thermal, and performance management within augmented and/or virtual reality (AR/VR) display devices is described. AR/VR experiences use extensive system resources to provide high quality user experience (UX). Application performance modes (e.g., Application Resource Bundles “ARBs”) may be registered and for each mode, applications may request specific performance from the underlying hardware/firmware/software subsystems. As system state changes, a central service may periodically reconfigure power states of individual subsystems resulting in power, thermal, and performance tradeoffs. As the power states are reconfigured, the central service may change the application performance modes to allow applications to adapt their UX to the new system state allowing applications to build custom behaviors and provide enhanced UX over a variety of states.

Abstract: A head-mounted display device employs controllable aperture projection for uniformity of a waveguide display within a field of view and eyebox domain. A waveguide-based display to control pupil replication density may comprise an image panel to provide light, a projection lens to receive and focus the light from the image panel, a variable aperture to pass the focused light in a controllable manner, and a waveguide to project the focused light passed through by the variable aperture onto an eye box, wherein the variable aperture is positioned at an entrance of the waveguide.

Abstract: A varifocal liquid lens includes a body filled with two different fluids separated by an interface of a variable curvature across a clear aperture of the varifocal liquid lens. At least one of the first or second fluids is birefringent, such that a refractive index difference between the first and second fluids and resulting optical power of the varifocal liquid lens is dependent on polarization of impinging light. At a first light polarization, the first and second fluids may be matched in refractive index, while at a second, orthogonal light polarization, the first and second fluids may be mismatched in refractive index, whereby the first interface between the first and second fluids may have a variable, non-zero optical power for the second polarization while having a substantially non-variable, zero optical power for the first polarization of light.

Abstract: The present disclosure relates to a system and a method for regulating an output voltage to a requested target voltage. The system includes a System-on-a-Chip (SoC) device and a Power Management Integrated Circuit (PMIC) having a voltage regulator. The SoC device configured to receive a requested target voltage, generates an analog voltage signal that steps up or down over time until the analog voltage signal corresponds to the requested target voltage, and outputs the analog voltage signal. The voltage regulator is configured to reference the analog voltage signal from the SoC device and supply a corresponding regulated output voltage to the SoC device.

Abstract: An imaging camera device comprising (1) an image sensor, (2) a spherical-power adapter coupled to the image sensor, wherein the spherical-power adapter moves the image sensor relative to an imaging lens, (3) a field-curvature adapter coupled to at least one optical component placed between the image sensor and the imaging lens, wherein the field-curvature adapter adjusts the size of a variable air gap formed between the optical component and at least one additional optical component, and (4) a cylindrical-power adapter that includes a plurality of cylindrical correction lenses applied to a wheel configured to rotate in at least one direction. Various other apparatuses, systems, and methods are also disclosed.

Abstract: Aspects of the present disclosure are directed to controlling optical parameters at a user's eye using an artificial reality system and tracked user conditions. For example, based on tracked user eye positioning, implementations can adjust the light that enters the user's eye to control an image shell generated at the user's eye. An image shell refers to the way light, that enters the eye, focuses on the retina of the eye. Example properties of an image shell include image shell centration, image shell curvature, image shell shape, etc. A user may focus on an object in an artificial reality environment (e.g., real-world object or virtual object) and light from the object can generate an image shell at the user's eyes. The image shell at the user's eyes can impact the user's vision and/or eye biology.

Abstract: A communication system actively monitors a conversation between users in an environment. Once a threshold condition occurs (e.g., client device within a threshold distance of a room where the conversation is occurring, the user enters a chatroom via the client device), the client device receives a summary from the communication system. The communication system may customize the summary in accordance with user preferences. User preferences may include level of detail in summary or time range associated with summary. The client device then presents the summary to the user. The summary may be audio or text. In some embodiments, the summary may be historical audio that is overlaid over current audio at faster speed and higher volume, and stops once the historical audio reaches real time.

Abstract: Systems, methods, and devices for power saving according to radio access network (RAN) awareness may include an application server establishing, with a wireless communication node, a reference time between one or more first clocks of the application server and one or more second clocks of the wireless communication node. The application server may transmit one or more packets to the wireless communication node for providing to a user equipment (UE), the one or more packets including information usable by the wireless communication node for applying a delivery policy for delivering the one or more packets to the UE, according to the reference time.

Abstract: Systems, methods, and devices for wireless sidelink operations may include a first device including a transceiver and one or more processors configured to establish, via the transceiver, a sidelink connection with a second UE. The first UE may determine to operate in a carrier aggregation mode, for communication via the sidelink connection. The first UE may operate the sidelink connection according to a set of predefined parameters per component carrier (CC), responsive to determining to operate in the carrier aggregation mode.

Abstract: According to examples, a head-mounted display (HMD) headset may include at least two exterior-facing color cameras mounted on the front face of the HMD and in the same visual plane as the user's eyes. The at least two exterior-facing color cameras may collect images for stereo view synthesis. The HMD may include a processor, and a memory storing instructions, which when executed by the processor, cause the processor to perform stereo view synthesis with a machine-learning (ML) based technique including at least one of depth estimation, imaging sharpening, forward splatting, disocclusion filtering, or fusion.

Abstract: The disclosed device may include a lens stack. The lens stack may include a first gradient-index liquid crystal lens and a second gradient-index liquid crystal lens in tandem with the first gradient-index liquid crystal lens. The lens stack may be configured to reach a target optical power based on a first optical power of the first gradient-index liquid crystal lens and a second optical power of the second gradient-index liquid crystal lens. Various other devices, systems, and methods are also disclosed.

Abstract: Imaging systems, cameras, and image sensors of this disclosure include imaging pixels that include subpixels. Diffractive optical elements such as a metasurface lens layers or a liquid crystal polarization hologram (LCPH) are configured to focus image light to the subpixels of the imaging pixels.