Abstract: An eye tracking device includes a head-mountable frame, an optical sensor subsystem mounted to the head-mountable frame, and a processor. The optical sensor subsystem includes a set of one or more SMI sensors. The processor is configured to operate the optical sensor subsystem to cause the set of one or more SMI sensors to emit a set of one or more beams of light toward an eye of a user; to receive a set of one or more SMI signals from the set of one or more SMI sensors; and to track a movement of the eye using the set of one or more SMI signals.

Abstract: A wearable device includes a band and a set of one or more SMI sensors. The band has a band interior opposite a band exterior, and is operable to attach the wearable device to a user. The band defines a cavity, and a portion of the band interior separates the cavity from the user. The set of one or more SMI sensors are disposed in the cavity. The set of one or more SMI sensors are configured to emit electromagnetic radiation toward the portion of the band interior and generate a set of one or more SMI signals including information indicative of movement of the portion of the band interior.

Abstract: Techniques for displaying a representation of a person based on a background, viewing angle, and/or a mouth occlusion.

Abstract: An optical sensor module includes a module housing defining a first compartment having a first aperture and a second compartment having a second aperture, with the second aperture spaced apart from the first aperture. A set of optical emitters is disposed in the first compartment and configured to emit light through the first aperture. A first set of optical detectors is disposed in the first compartment and configured to receive a first redirected portion of the emitted light through the first aperture. A set of optical elements is disposed in the first compartment and configured to direct at least a portion of the emitted light or the first redirected portion of the emitted light. A second set of optical detectors is disposed in the second compartment and configured to receive a second redirected portion of the emitted light through the second aperture.

Abstract: Disclosed in the present application are a preparation method for a bronze-process Nb3Sn superconducting wire, and a superconducting wire. The preparation method comprises: placing a bronze rod into an Nb tube, placing the Nb tube into a bronze tube, and performing rotary swaging, drawing and annealing to prepare a bronze/Nb single core rod; bundling up hundreds of bronze/Nb single core rods in a hexagonal close-packed arrangement and then coating the exterior with a barrier layer, and then placing the bronze/Nb single core rods into a copper tube to form a final billet; and heating the final billet and then sequentially performing extruding, drawing and intermediate annealing thereon, so as to obtain a bronze-process Nb3Sn superconducting wire having ring-shaped filaments.

Abstract: A head-mounted device may have a head-mounted support structure. Displays may present images to eye boxes at the rear of the head-mounted support structure. Cameras and other sensors may be supported by the head-mounted support structure. Tracking cameras may be used to track the movement of a user’s hands or other external objects. In dim ambient lighting conditions, a supplemental illumination system may be activated to provide supplemental illumination for the tracking cameras. A single beam of supplemental illumination may be emitted over a given coverage area or a smaller beam of supplemental illumination may be steered across the given coverage area. Light-emitting devices such as infrared light-emitting diodes and infrared lasers may be used to form infrared light sources for the supplemental illumination system.

Abstract: A multi-stage adjusting damping valve as well as a shock absorber and suspension system using the damping valve are provided. The multi-stage adjusting damping valve comprises a throttle valve, an overflow valve and a multi-stage pilot valve. The multi-stage pilot valve comprises a mechanical regulating valve and a plurality of high-speed switch electromagnetic valves having different throttle hole diameters. The damping valve is connected between a rod cavity and an oil storage cavity of the shock absorber by means of a middle cavity, and the multi-stage damping rapid regulation of the shock absorber is achieved through high-frequency opening and closing of a high-speed switching electromagnetic valve, and in comparison, the machining precision, the manufacturing cost and the control and calibration difficulty of the present disclosure are greatly reduced.

Abstract: An aging device for refrigerating and freezing apparatus includes a aging drawer configured to be retractably provided in a cabinet of the refrigerating and freezing apparatus, the interior of the aging drawer is defined a aging chamber for containing the items to be aged, a rear wall of the aging drawer being provided with a return air inlet and at least one air outlet; a circulation fan, a plurality of seal mounting holes being arranged at intervals on the peripheral side of each airflow outlet of the circulating fan; and at least one sealing ring, each of sealing ring is annularly arranged around the periphery of a corresponding airflow outlet, a plurality of seal mounting structures are spaced on one side of each sealing ring and are configured to lock and fit with the seal mounting holes.

Abstract: An aging drawer and refrigeration apparatus with the same. The aging drawer comprises a shell, at least one air duct board provided within the shell and a circulation fan. The shell and the at least one air duct board define a aging chamber and at least one air supply duct, the aging chamber is connected to the air supply duct through multiple air outlet supply ports arranged along the direction of airflow within the air supply duct; and at least an air supply section of the air supply duct, which is directly connected to the multiple air outlets, is configured to gradually taper along the direction of airflow therein, thereby ensuring the airflow passes through the air supply section at a uniform speed at different positions, and improving the aging effect.

Abstract: Eye motion is determined based on optical flow in images of an eye where the images are of reflections of light (coherent or incoherent) off of an eye. The reflections may be produced by selectively using one or more light sources and/or the images may be captured by selectively using one or more image sensors. For example, a subset of less than all of multiple available light sources and/or a subset of less than all of multiple available image sensors may be selected and used at a time based on the pose of the eye. One of the light sources and/or image sensors may be best suited for capturing images for eye tracking purposes when the user is looking left and while another light source and/or image sensor may be best suited when the user is looking right. The light sources and/or image sensors may be positioned to enable capturing images across the full range of eye poses.

Abstract: A computer implemented method handles object references. A computer system determines whether an object reference fetched by a load instruction has an expected value for heap protection for a heap in response to receiving the load instruction for execution. The computer system generates an event in response to the object reference not being the expected value, wherein the event is used to manage the object reference. According to other illustrative embodiments, a computer system and a computer program product for managing object references are provided. As a result, the illustrative embodiments can prevent a load instruction from loading an invalid object reference that does not point to a memory location in a heap.

Abstract: A light emitter that operates through a display may cause display artifacts, even when the light emitter operates using non-visible wavelengths. To determine whether the light emitter has caused these artifacts, a display light sensor under the display may measure backside light leakage from the display. Based on the measured backside light leakage, the display light sensor or control circuitry may determine whether artifacts in the display exceed a predetermined acceptable artifact range. If the artifacts exceed this range, the artifacts may be mitigated. To mitigate the artifacts, the light emitter and/or the display may be adjusted. For example, the timing and/or dosage of the light emitter, the acceptable artifact range, and/or the timing of display content may be adjusted. In this way, the display light sensor may be used to form a closed-loop system to determine whether artifacts are present in the display and to mitigate those artifacts.

Abstract: A computer-implemented method includes processing, at a compile time of at least one domain-specific language program, at least a first set of data related to one or more memory access operations associated with the at least one domain-specific language program; processing, at a runtime of the at least one domain-specific language program and based at least in part on an output of the processing at the compile time, at least a second set of data related to one or more memory access operations associated with the at least one domain-specific language program; and performing, based at least in part on one or more outputs of the processing the at least a second set of data at the runtime, one or more automated actions related to enhancing memory security of the at least one domain-specific language program.

Abstract: The present disclosure relates to the technical field of mine mining simulation, and discloses a simulation test system for multi-scale overlying strata spatial structure evolution and disaster response and a working method thereof. The system includes a loading test host, a hydraulic station, a power distribution cabinet, and an industrial control computer. The loading test host includes a base, a main framework, a first top loading unit, a second top loading unit, a bottom excavation unit, a buffering energy release device, a telescopic rod group, and rock plate stamping device. The present disclosure has multiple working modes to achieve two-dimensional/three-dimensional simulation of the movement and response characteristics of overlying strata under conditions of large burial depth, strong mining vibration, and continuous mining of multiple working faces, and to simulate the entire process of coal mine vibration and seismogenic-triggering process of coal mine earthquakes.

Abstract: The present disclosure generally relates to techniques and user interfaces for controlling and displaying representations of user in environments, such as during a live communication session and/or a live collaboration session.

Abstract: A head-mounted device may have a head-mounted support structure. Displays may present images to eye boxes at the rear of the head-mounted support structure. Cameras and other sensors may be supported by the head-mounted support structure. Tracking cameras may be used to track the movement of a user's hands or other external objects. In dim ambient lighting conditions, a supplemental illumination system may be activated to provide supplemental illumination for the tracking cameras. A single beam of supplemental illumination may be emitted over a given coverage area or a smaller beam of supplemental illumination may be steered across the given coverage area. Light-emitting devices such as infrared light-emitting diodes and infrared lasers may be used to form infrared light sources for the supplemental illumination system.

Abstract: A frequency hopping communication method for short-distance wireless communication between a primary device and a secondary device comprises switching by the primary device from the second frequency hopping sequence to the first frequency hopping sequence at a time point of frequency hopping switching, wherein M reserved channels are between a first frequency hopping sequence and a second frequency hopping sequence; and performing frequency hopping communication with the secondary device based on the first frequency hopping sequence.

Abstract: A relative position change sensor includes a laser element and an image sensor. The relative position change sensor is disposed within a nose pad of a head-mounted electronic device so that the laser element is positioned to emit laser light against a substantially stationary portion of the wearer's anatomy, such as a side of the nasal bone of the wearer. As a result of this construction and orientation, the image sensor is configured to be illuminated with a laser speckle pattern that may shift in plane proportional to movement between the substantially stationary portion and the head-mounted electronic device. Upon determining such a shift has occurred, the relative position change sensor may report a slippage event in respect of the head-mounted electronic device and the wearer.

Abstract: Various implementations disclosed herein include devices, systems, and methods that initiate an action based on a detected gaze direction oriented towards a target area (e.g., a hot corner/zone). For example, an example process may include producing a reflection by directing light towards an eye using an illuminator, receiving sensor data from a sensor, wherein a direction of sensing by the sensor (e.g., the optical axis of the camera) and a direction from the eye to a target area are approximately aligned, determining a reflective property (e.g., a spectral property) of the reflection based on the sensor data, detecting that a gaze direction of the eye is approximately oriented towards the target area (e.g., a hot zone/spot) based on the reflective property, and initiating an action based on detecting that the gaze direction is approximately oriented towards the target area.