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: An electrical motor and drive (10) comprises a motor unit (13) having a stator (32) and a rotor (33) disposed inside a housing (29), the rotor (32) being supported inside the annular stator (33) by a shaft (30) which is rotatably mounted to the housing (29) by bearings (39). A variable speed drive unit (11) of the motor (10) comprises a plurality of electronic components (35), an elongate flow duct (19) and heatsink having elongate fins (17) which extend along the flow duct (19). A fan unit (12) is disposed between the motor and drive units (11, 13), the fan portion comprising a centrifugal fan (25) mounted on the shaft (30) and having a central air intake which faces axially towards the drive unit (11). The flow duct (19) extends to the fan intake so that the fan (25) draws air along the flow duct (19) to efficiently dissipate heat from the fins (17) and is expelled radially.

Abstract: A drive system for raising and lowering a window covering using a continuous cord loop that includes a motor with an associated encoder, device controller for the motor, a speed sensor, and proportional-integral-derivative (PID) layer. The device controller stores or receives a desired motor speed and generates a speed command signal to the motor. A closed-loop system applies a PID speed control algorithm to an error representing a difference between actual motor speed and desired motor speed. The PID layer uses the error to calculate a new output via PID control terms to automatically correct signals to the motor to achieve desired motor speed. A hembar alignment function automates positional control of a plurality of motor drive systems to synchronize raising or lowering of window covering shades with the shades in positional alignment. A system controller includes a time-counter indexed to a position scale to synchronize hembar alignment positional commands.

Abstract: A wearable device such as an augmented reality (AR)/virtual reality (VR) near-eye display device employs wireless communication technology to facilitate “walkie-talkie” style line-of-sight (LoS) communication between two users or one user and a group of users (unidirectional or bidirectional broadcast mode). The wireless communication may be facilitated by an ultra-wide band (UWB) or comparable wireless communication sub-system. The system may detect another user(s) within range of communication and within a predefined angle-of-arrival (AoA). The communication may be initiated by the user through an input allowing the user to communicate with the other user(s) discretely through audio and/or video modes. In a “walkie talkie selfie” mode, two or more users may capture images of each other, and the images may be superimposed generating a “selfie” of the entire group.

Abstract: A permanent magnet electrical machine comprises a stator 12 having a plurality of stator coils 15 extending around respective stator teeth 14, the coils 15 having respective coil axes extending parallel to the rotational axis of the machine. A rotor 20 axially spaced apart from the stator 12 has a plurality of circumferentially arranged permanent magnets 21. The stator teeth 14 and magnets 21 comprise opposed faces on opposite sides and an air gap 23, the faces being of a complementary profile having both a radially facing, in-between facing and an axially-facing component of inclination relative to the rotational axis of the machine. The inclination of the opposed faces maximises the active surface area for magnetic flux thereby substantially increasing the power density and efficiency of the motor compared with conventional axial flux machines.

Abstract: Systems and methods for providing contextual collaborating for conferencing are disclosed. In various examples, a system may include a computing device that may establish a remote network connection with a conferencing device configured to enable at least one of audio or visual communication between a group of participants. The computing device may communicate, via radio signals, with a device associated with, on, and/or near a first participant. The computing device may determine a location of the device based on received radio signals and may authenticate the first participant with the conferencing device to enable communication between the first participant and the group of participants. The computing device may also determine, in real time, an interaction of the first participant with the conferencing device, based on the received radio signals emitted from the device.

Abstract: A system, a headset, or a method for determining a value of a food consumption parameter. The system includes a headset worn on a head of a user and a wearable device worn on a wrist or a hand of the user. The headset and the wearable device are communicatively coupled to each other via an ultrawideband communication channel. The system tracks the hand of the user relative to the head of the user based on the ultrawideband communication channel between the headset and the wearable device. The system also monitors movement of a jaw of the user using a contact microphone coupled to the headset, and determines a value of a food consumption parameter based in part on the tracked movement of the hand and the monitored movement of the jaw.

Abstract: The present disclosure relates to electromagnetic motors. In some disclosed embodiments, an electromagnetic motor or generator comprise a coil and a stator comprising a 3D-printed former disposed within the coil, the former comprising a cavity containing fluid particles of material in liquid or powdered form, the particles having a relative permeability which is greater than that of air. The particles are free to move and align with the magnetic field in manner according to the strength and pattern of the induced field.

Abstract: A device may include a first ultra-wideband (UWB) antenna and one or more processors. The one or more processors may be configured to establish a plurality of respective connections with a plurality of second devices each having a respective UWB antenna. The device may identify an interference condition for at least one of the plurality of connections. The device may update a configuration for traffic sent via the at least one of the plurality of connections according to the identified interference condition, and can transmit a first packet to one of the plurality of second devices according to the updated configuration.

Abstract: Disclosed herein are related to dynamically adjusting a wake time and a sleep time for wireless communication between two or more devices to reduce power consumption. In one aspect, a first device enters a wake up state to wirelessly communicate with a second device for a service period with a determined duration scheduled according to a target wake time (TWT) protocol. In one aspect, the first device monitors for one or more indicators from the second device indicating that additional data is available for communication. In one aspect, the first device extends the service period beyond the determined duration, in response to receiving a first indicator of the one or more indicators. In one aspect, the first device communicates with the second device the additional data during the service period extended beyond the determined duration.

Abstract: Disclosed herein are related to a system and a method of coordinating among artificial reality links. In one approach, a system comprising a first console for executing an application for artificial reality may include a wireless communication interface and a processor. The processor may be configured to send, via the wireless communication interface, a first message comprising a first plurality of parameters and a first schedule for access to a shared wireless channel by the first console, receive, from a second console via the wireless communication interface, a second message comprising a second plurality of parameters and a second schedule for access to the shared wireless channel by the second console, update, responsive to the second message, the first plurality of parameters and the first schedule, and/or send, via the wireless communication interface, a third message comprising the updated first plurality of parameters and the updated first schedule.

Abstract: In one aspect, the systems and methods described herein may include a first device comprising a first ultra-wideband (UWB) antenna. The first device may establish a connection with a second device having a second UWB antenna. The first device may determine an orientation of the first device relative to the second device, according to one or more UWB measurements between the first UWB antenna of the first device and the second UWB antenna of the second device. The first device may receive audio signals corresponding to the second device, and can render the audio signals into audio output to a user of the first device according to the determined orientation.

Abstract: Disclosed herein are related to a system and a method of reducing contention in accessing a wireless link. In one aspect, a first device includes a transceiver configured to communicate with a second device via a wireless link. In one aspect, the first device includes a processor configured to determine that a type of content to be transferred between the first device and the second device through the wireless link. In one aspect, the processor is configured to modify one or more parameters for the first device to access the wireless link, from a first set of values to a second set of values, in response to determining that the type of content is artificial reality. In one aspect, the processor is configured to cause the transceiver to access the wireless link using the second set of values.

Abstract: In one aspect, the systems and methods described herein may include a first device comprising a first ultra-wideband (UWB) antenna. The first device may establish a connection with a second device having a second UWB antenna. The first device may determine an orientation of the first device relative to the second device, according to one or more UWB measurements between the first UWB antenna of the first device and the second UWB antenna of the second device. The first device may receive audio signals corresponding to the second device, and can render the audio signals into audio output to a user of the first device according to the determined orientation.

Abstract: A first device may include a transceiver and one or more processors. The one or more processors may wirelessly receive, via the transceiver from a second device, a first packet including image data and a trigger frame, the trigger frame including an identifier identifying the first device. The one or more processors may wirelessly transmit, via the transceiver to the second device, first sensor measurement data relating to the first device and acknowledgement (ACK), in response to the identifier identifying the first device in the trigger frame.

Abstract: Disclosed herein are related to a system and a method of time alignment in an AR/VR environment. In one approach, a device including a console or head wearable display (HWD) may determine a wireless transfer window corresponding to a wireless data transmission between the HWD and the console. The device may determine one or more first processes to be performed by the device to enable the wireless data transmission. The device may schedule the one or more first processes according to the wireless transfer window. The device may perform the wireless data transmission within the wireless transfer window responsive to the one or more first processes.

Abstract: Disclosed herein are related to a system and a method of enforcing fairness in airtime utilization among devices including artificial reality devices. In one approach, a system as a first device may be configured to monitor, via the wireless communication interface, a wireless channel. The processor may be configured to determine information about other devices using the wireless channel. The processor may be configured to determine a target share of the wireless channel for use by the first device in communicating data for the artificial reality, according to the information about the other devices using the wireless channel. The processor may be configured to access, via the wireless communication interface, the wireless channel according to (1) the target share of the wireless channel and (2) a combined level of usage of the wireless channel by the first device and the other devices.

Abstract: An electrical pump or generator apparatus comprises a sealed housing having fluid inlet and outlet ports and an impeller rotatably mounted inside a cavity of the housing, the impeller being mounted on a shaft for rotation about an axis, the shaft being confined inside the sealed housing. An electric machine of the pump has a stator disposed outside the housing and a rotor sealed inside the housing. In use a rotating magnetic field extends through a boundary wall of the housing to magnetically couple the stator and rotor on opposite sides of thereof. The need for a shaft seal is thus avoided and the apparatus is more compact than conventional pumps and generators.

Abstract: The present disclosure relates to electromagnetic motors. In some disclosed embodiments, an electromagnetic motor or generator comprise a coil and a stator comprising a 3D-printed former disposed within the coil, the former comprising a cavity containing fluid particles of material in liquid or powdered form, the particles having a relative permeability which is greater than that of air. The particles are free to move and align with the magnetic field in manner according to the strength and pattern of the induced field.

Abstract: In one aspect, the systems and methods described herein may include a first device comprising a first ultra-wideband (UWB) antenna. The first device may establish a connection with a second device having a second UWB antenna. The first device may determine an orientation of the first device relative to the second device, according to one or more UWB measurements between the first UWB antenna of the first device and the second UWB antenna of the second device. The first device may receive audio signals corresponding to the second device, and can render the audio signals into audio output to a user of the first device according to the determined orientation.