Abstract: An object is to provide an alignment chip for forming an alignment symbol on a wiring board of a probe card. Provided are: a substrate 51 having a pasting surface to be pasted to a probe installation surface 17 of a wiring board 14 constituting a probe card 10 via an adhesive 54; and an alignment symbol 501 made of a metal film 52 formed on a symbol surface on a side opposite to the pasting surface of the substrate 51. The symbol surface includes a symbol peripheral region 502 surrounding the alignment symbol 501, and the symbol peripheral region 502 has a lower reflectance than the alignment symbol 501.

Abstract: Embodiments described herein may be related to apparatuses, processes, systems, and/or techniques for using x-rays to alter or observe circuits within a semiconductor device before, during or after a test of the semiconductor device. Other embodiments may be described and/or claimed.

Abstract: Embodiments described herein may be related to apparatuses, processes, systems, and/or techniques for an enclosure, which may be referred to as a cartridge, that surrounds a semiconductor device prior to the semiconductor device being bombarded with an electron beam during operational testing. In embodiments, the enclosure may include a cooling plate that includes a thermal cooling mechanism that is thermally coupled with the semiconductor device to control the temperature of the semiconductor device during testing. The thermal cooling mechanism may include a manifold that extends through the plate through which a cooled fluid, cooled air, or some other cool material may be circulated to cool the semiconductor device. Other embodiments may be described and/or claimed.

Abstract: A configurable computer system is disclosed. The computer system includes a set of processing blocks and a set of programmable registers. A given one of the programmable registers corresponds to at least one of the processing blocks. The computer system is configured to receive a harvesting command that writes a disable value to a group of the programmable registers corresponding to a group of the set of processing blocks to be disabled for a selected computing platform of a plurality of different computing platforms. One or more hardware circuits are configured to perform tasks after a given boot of the computer system, the more tasks utilizing circuitry in the group of the set of processing blocks. A power control circuit is configured to, after tasks have been performed, temporarily disable the group of the set of processing blocks, thereby configuring the computer system for the selected computing platform.

Abstract: Embodiments of the present application provide a GRPC-based chip test method, a GRPC-based chip test apparatus, and a storage medium. The GRPC-based chip test method comprises: determining a number of to-be-tested chips that actually need to be tested among to-be-tested chips, and issuing a corresponding number of remote instrument call requests according to the number of to-be-tested chips that actually need to be tested; acquiring each of the remote instrument call requests based on a GRPC protocol; and sorting all the remote instrument call requests to form a request execution sequence table, and controlling the test instrument to sequentially test the to-be-tested chips that actually need to be tested according to the request execution sequence table.

Abstract: A deep learning-based MLCC stacked alignment inspection system includes an integrated defect detection unit configured to detect core areas requiring inspection of image data in which a stacked structure is photographed from a semiconductor MLCC chip by using at least one deep learning-based core area detection model, perform segmentation in the detected core areas, determine whether a defect exists according to a standard margin percentage range, and enable defect detection by generating normal and/or defective data based on the determination result, a result analysis unit configured to perform visualization for respective results of the core area detection, segmentation, and defect detection of the integrated defect detection unit, and provide stepwise analysis data for the visualized respective results so as to determine whether to modify corresponding data, and a data storage configured to store the normal and/or defective data, and stepwise analysis data.

Abstract: Time to read the data registers in a remote Test Access Port (TAP) in a subsystem in a System-on-Chip (SoC) is reduced by reading multiple data registers in remote Test Access Ports in parallel. A Test Access Port Bridge provides access to multiple same width data registers in parallel. The same width data registers can be for the same function or different functions. The subsystems with a remote Test Access Port in the SoC can include Peripheral Component Interconnect Express (PCIe), Voltage Droop Monitors (VDMs), In-Die Variation (IDV) Monitor fub-lets, Temperature Sensors, Performance Monitors and telemetry subsystems.

Abstract: A device includes a scan chain including a plurality of storage elements and an output buffer; a shadow shift register having a shadow shift input coupled to a scan output of one of the storage elements of the scan chain; a signature register; and a comparator having a first input, a second input, and an output. The comparator first input is to receive a value of the shadow shift register, and the comparator second input is to receive a value of the signature register. The output buffer has a control input coupled to the comparator output, and the output buffer provides a high-impedance output responsive to the value of the shadow shift register being unequal to the value of the signature register.

Abstract: Embodiments described herein may include apparatus, systems, techniques, and/or processes that are directed to performing testing of a device while a system is operational. A device may include computing circuitry and host connectivity registers. Host connectivity registers contain configuration and memory mapping data programmed by system software upon power up of the device and computing system. The data contained in host connectivity registers should be always maintained while the computing system is operational. Scan test circuitry may be implemented, providing the ability to test the device while the system is operational. Preservation circuitry preserves or maintains the data stored in host connectivity registers allowing in-operation testing of the device, ensuring the device the ability to return to full operation at the end of in-operation testing without requiring system software to reprogram the host connectivity registers.

Abstract: A malfunction detection method detects a malfunction in an electronic control device. The electronic control device includes a normal power supply terminal connected to a normal power supply mounted on a vehicle, a starting power supply terminal connected to a starting power supply, a controller activated by supply of a normal voltage, and a wake-up circuit having a wake-up switch to open and close a power supply path from the normal power supply terminal to the controller. The wake-up circuit turns on the wake-up switch when a starting voltage input to the starting power supply terminal is equal to or greater than an ON threshold. The malfunction detection method includes determining by the controller that the wake-up switch has an ON sticking malfunction when the normal voltage is equal to or greater than a threshold and the starting voltage is less than the ON threshold.

Abstract: A method of monitoring main contact conditions of main contacts in an automatic transfer switch is provided. The automatic transfer switch is coupled to a plurality of electrical power sources and an electrical load. The method includes: measuring, by sensors, temperatures of a plurality of main contacts coupled to the plurality of power sources; determining if the measured temperatures indicate a temperature rise at one or more main contacts of the plurality of main contacts; in response to determining that the measured temperatures indicate a temperature rise at the one or more main contacts, comparing a current value of the temperature rise with stored temperature rise values that represent main contact damages; and determining an amount of main contact damage at the one or more main contacts based on the comparison.

Abstract: The present invention relates to a vibration test jig for a cylindrical battery cell, including: a main body for accommodating a cylindrical battery cell; and a connection unit electrically connected to an electrode terminal of the cylindrical battery cell, wherein the connection unit includes: a connection member electrically connected to the electrode terminal and withdrawn to the outside of the main body; a support member for supporting the connection member; and a fixing member for fixing the support member on the main body. The vibration test jig enables the cylindrical battery cell mounted in the jig to be electrically connected to an external voltage and resistance measuring device through the connection unit. During a vibration test, an electrical state of the battery cell can be monitored in real time, and it can be checked whether and when an electrode tab is disconnected by using the measured voltage or resistance value.

Abstract: The present disclosure is a battery emulator that permits the development and testing of battery software, firmware, and/or circuitry with lowered risk of shock, explosion, fire, or other dangerous conditions. The battery emulator may include a single input voltage source that provides an input voltage to an adjustable voltage regulator. The battery emulator further includes a user control device coupled to the adjustable voltage regulator and configured to control an output of the adjustable voltage regulator, wherein the output of an adjustable voltage regulator is configured to replicate an output voltage of a single battery cell of a multi-cell battery. The battery emulator further includes voltage isolation circuitry which isolates the input voltage and/or output voltage from an adjustable voltage regulator, preventing them from interfering with the user control device.

Abstract: A circuit includes a processing circuit. The processing circuit is configured to model a battery using a battery model. The battery model includes: a voltage terminal, an RC stage having a first resistor and a first capacitor in parallel, a second resistor, a second capacitor and a ground terminal. The second resistor is coupled between the voltage terminal and the RC stage. The RC stage is coupled between the second resistor and the second capacitor. The second capacitor is coupled between the RC stage and the ground terminal. The processing circuit is also configured to determine a first resistance of the first resistor based on a first ratio of the first resistance to a total battery resistance, determine a second resistance of the second resistor based on a second ratio of the second resistance to the total battery resistance, and determine the total battery resistance.

Abstract: Discussed is a secondary battery low-voltage defect determination system, which can include a database unit configured to store existing data on battery manufacturing process conditions, activation process conditions, voltage measurement conditions, and a battery voltage measured after an activation process of a battery, a detection unit configured to detect experimental data on the manufacturing process conditions, the activation process conditions, the voltage measurement conditions, and the battery voltage measured after the activation process of the battery, and a calculation unit configured to calculate target voltage drop correction data based on the existing data stored in the database unit and the experimental data detected by the detection unit.

Abstract: A method of self-discharge test for a battery including an electrode body provided with a positive electrode plate including a positive active material layer and a negative electrode plate including a negative active material layer. The method includes a process of voltage adjusting to adjust a battery voltage to a first battery voltage and a process of self-discharge testing to keep the battery in a terminal open state for a predetermined term and to inspect a state of self-discharge of the battery from variations in the battery voltage occurred during the predetermined term. The voltage adjusting is to adjust the battery voltage to the first battery voltage having magnitude, for which a variation settled time of settling a variation amount of the battery voltage varied by Li diffusion to lessen a concentration gap of an opposing-portion concentration and a non-opposing portion concentration, is set as 17 hours or less.

Abstract: A battery system having a battery pack with a positive pole, a negative pole, at least one battery cell, and a pack voltage divider, and at least one high-voltage coupling network electrically connectable to the battery pack, having a positive terminal, a negative terminal, and a link voltage divider. The pack voltage divider comprises a first measuring resistance (RM1) and a first measuring switch (SM1) connected to one another between the negative pole and a first reference point, and a second measuring resistance (RM2) and a second measuring switch (SM2) connected to one another between the positive pole and the first reference point. The link voltage divider comprises a third measuring resistance (RM3) connected between the negative terminal and a second reference point, and a fourth measuring resistance (RM4) connected between the positive terminal and the second reference point.

Abstract: An electrochemical storage diagnostic system is configured to perform an electrical test to measure energy storage device parameters. The diagnostic system includes a charge management controller, electrically coupled to a power multiplexer, a power converter circuit, and an isolated converter circuit. The charge management controller is programmed with instructions to identify a device under test, selected from at least one member of the plurality of energy storage devices to perform an electrical test. Then, adjust a charge in the secondary energy storage device to a target voltage through the power multiplexer by transferring energy between the secondary energy storage device and a support device, selected from at least one member of the plurality energy storage devices. After that, transfer electrical power through the power multiplexer and power converter circuit to the device under test in order to perform the electrical test. Finally, complete the electrical test.

Abstract: A method for inspecting a power storage device for short circuit includes: adjusting a plurality of power storage devices to a first device voltage; restraining the power storage devices; measuring a pre-leaving device voltage, leaving the power storage devices, and measuring a post-leaving device voltage; obtaining a voltage drop rate; and determining whether or not a restrained device is short-circuited using a voltage drop rate. The method further includes: calculating a largest adjustment timing difference between an oldest adjustment completion time of an oldest adjusted device and a newest adjustment completion time of a newest adjusted device, after adjusting the voltage but before measuring the pre-leaving voltage; obtaining a shortest standby time from the largest adjustment timing difference; and deferring the measuring of the pre-leaving voltage until the shortest standby time elapses.

Abstract: A system may comprise a power module including a power switch, a driver circuit configured to control an ON state and an OFF state of the power switch, and a processor configured to control the driver circuit. The processor may be configured to receive a voltage associated with the power switch in the ON state and determine a state of health (SOH) for the power switch based on the voltage and a regression model associated with the power switch.

Abstract: When a PCU (inverter) of an electrically powered vehicle fails, a first map where a temperature and a current of a battery are defined as parameters or a second map where a temperature and a rate of change in voltage of the battery are defined as parameters is used to determine whether or not rapid deterioration of the battery has occurred. When it is determined that the rapid deterioration of the battery has occurred, a battery replacement indicator is turned on.

Abstract: A method of determining ageing of a mixed electrode of a full cell lithium ion battery is presented. The method includes obtaining a voltage hysteresis of the full cell lithium ion battery by comparison of a charging voltage to a discharging voltage at a specific state of charge, SOC. The specific SOC is in a range from 0% to 20% of a maximum SOC. The method further includes determining ageing of a volume expanding component of the mixed electrode based on the obtained voltage hysteresis.

Abstract: An aircraft solid state power controller for controlling the supply of electric power from an aircraft electric power supply to an electric load comprises a power input node, which is electrically connectable to an output node of the aircraft electric power supply; a power output node, which is electrically connectable to an electric load and configured for selectively supplying electric power to the electric load; an electric load switch, which is configured for controlling the supply of electric power from the power input node to the power output node; a shunt resistor, which is arranged between the electric load switch and the power output node so that any electric current that is supplied from the aircraft solid state power controller via the power output node to the electric load passes through the shunt resistor; and a control device comprising a voltage sensor that is configured for detecting a voltage drop over the shunt resistor.

Abstract: An aircraft ground fault detection circuit comprises: a first electric power supply line, and a second electric power supply line; a first shunt resistor arranged in the first electric power supply line; a second shunt resistor arranged in the second electric power supply line; a first voltage detector configured for detecting a first voltage drop over the first shunt resistor; a second voltage detector configured for detecting a second voltage drop over the second shunt resistor; an electric test current power supply for applying an electric test voltage to the first and second electric power supply lines causing an electric test current to flow through the first and second electric power supply lines and the first and second shunt resistors; and a controller, which is configured for receiving voltage signals provided by the first and second voltage detectors indicating the first and second voltage drops, and determining a difference between the resistivities of the first and second shunt resistors from said

Abstract: A method for inspecting a battery for short circuit includes: adjusting batteries, which have been subjected to initial charging and subsequent charging and discharging, to a first device voltage; measuring a pre-leaving voltage; leaving the batteries for a leaving period with terminals in an open state; measuring a post-leaving device voltage; actually measuring an actual measured voltage drop rate; determining whether or not each voltage is short-circuited; and, prior to the determining, estimating an estimating voltage drop rate according to an elapsed time and a leaving period. In the determining, it is determined whether or not each battery is short-circuited using the actual voltage drop rate and the estimated voltage drop rate.

Abstract: A method for inspecting a battery in which an electrode body is accommodated in a case so that the electrode body is insulated from the case by an insulation film includes: adjusting the battery to a first voltage; measuring a first potential difference which is a potential difference between the case and a negative terminal that is exposed outside the case and electrically connected to a negative electrode plate to have a negative-electrode potential; measuring a second potential difference which is a potential difference between the case and the negative electrode plate after a lapse of a standby period of 24 hours or more; and determining whether or not a short circuit exists between the case and the negative electrode plate based on magnitude of the first and second potential differences and a change between the first potential difference and the second potential difference.

Abstract: The present disclosure provides a direct current (DC) transformer error detection apparatus for a pulsating harmonic signal, including a DC and pulsating harmonic current output module and an external detected input module, where the DC and pulsating harmonic current output module outputs a DC and a DC superimposed pulsating harmonic current to an internal sampling circuit and a self-calibrated standard resistor array; and the internal sampling circuit converts the input DC and the input DC superimposed pulsating harmonic current into a voltage signal, and sends the voltage signal to an analog-to-digital (AD) sampling and measurement component through a front-end conditioning circuit and a detected input channel. The DC transformer error detection apparatus can complete self-calibration for measurement of the DC and the pulsating harmonic signal on a test site.

Abstract: Methods, apparatuses, and systems for analysing the state of power transformers are described. A method may include providing at least one sensor arranged relative to a power transformer, retrieving at least one vibroacoustic signal from said at least one sensor, performing a time-frequency decomposition of said at least one vibroacoustic signal from a time domain to a frequency domain, identifying one or more vibroacoustic harmonic frequencies provided by the fast Fourier transformation of the at least one vibroacoustic signal, calculating an amplitude value and a phase angle related to the one or more harmonic frequencies, retrieving an electromagnetic signal emitted from the power transformer, a temperature generated by the power transformer, or both, and providing at least one analysed information from the amplitude value and the phase angle related to the one or more harmonic frequencies, the electromagnetic signal, the temperature, or any combination thereof.

Abstract: A magnetic field sensing device is provided. The magnetic field sensing device includes a magnetoresistance sensor, a Hall sensor, and a calculating circuit. The magnetoresistance sensor senses a magnetic field to provide a magnetoresistance sensing value. The Hall sensor senses the magnetic field to provide a Hall sensing value. The calculating circuit provides a weight value according to the magnetoresistance sensing value, generates a first calculating value according to the weight value and the Hall sensing value, and generates a second calculating value according to the weight value and the magnetoresistance sensing value. The calculating circuit calculates on the first calculating value, the second calculating value, and the magnetoresistance sensing value to generate an output signal with an output value. The output value is associated with a strength of the magnetic field.

Abstract: Embodiments are disclosed for yoke structures for improved magnetometer performance. In an embodiment, a magnetometer comprises: a yoke structure comprising at least one hard magnetic layer and at least one soft magnetic layer arranged along a dimension of the yoke structure, where a first coercivity of the at least one hard magnetic layer is greater than a second coercivity of the at least one soft magnetic layer; and at least one magnetic sensing element located in proximity to the at least one soft magnetic layer. In another embodiment, a magnetometer comprises: a multilayer yoke structure comprising layers of non-magnetic material and magnetic material along a dimension of the yoke structure; and at least one magnetic sensing element located in proximity to the yoke structure.

Abstract: A magnetic sensor used to detect a detection target substance in a sample includes a substrate having a first surface and a second surface, which is opposite the first surface and a magnetoresistive effect element provided on the first surface of the substrate. The resistance of the magnetoresistive effect element changes in accordance with an input magnetic field. A protective layer covers the top of the magnetoresistive effect element. The surface of the protective layer, which is positioned on top of the magnetoresistive effect element, has a prescribed surface roughness.

Abstract: In some implementations, a magnetic sensor may apply an electrical signal across a tunnel barrier layer of a tunnel magnetoresistive (TMR) sensing element. The electrical signal may have a first signal level during a first time period and a second signal level during a second time period. The second signal level may be different from the first signal level. The magnetic sensor may generate an offset-corrected sensor signal based on a sensor signal that results from applying the electrical signal across the tunnel barrier layer of the TMR sensing element.

Abstract: A pulsed magnetic particle imaging system includes a magnetic field generating system that includes at least one magnet, the magnetic field generating system providing a spatially structured magnetic field within an observation region of the magnetic particle imaging system such that the spatially structured magnetic field will have a field-free region (FFR) for an object under observation having a magnetic nanoparticle tracer distribution therein. The pulsed magnetic particle imaging system also includes a pulsed excitation system arranged proximate the observation region, the pulsed excitation system includes an electromagnet and a pulse sequence generator electrically connected to the electromagnet to provide an excitation waveform to the electromagnet, wherein the electromagnet when provided with the excitation waveform generates an excitation magnetic field within the observation region to induce an excitation signal therefrom by at least one of shifting a location or condition of the FFR.

Abstract: A radio frequency (RF) coil comprises a lay-out of electrical conductors including several axial rung 11s and several circumferential rings (12), in which at least one of the rung 11s is coupled with at least one of the rings by a T-shaped connector. The T-shaped connector includes a distributed capacitive coupling between the ring (12) and the rung (11).

Abstract: Disclosed herein is a medical system comprising: —a memory storing machine executable instructions; —a computational system, wherein execution of the machine executable instructions causes the computational system to perform a mismatch check comprising: —receive posture recognition system data, wherein the posture recognition system data comprises a set of subject coordinates and a set of coil coordinates described using a current coordinate system, wherein the set of subject coordinates are descriptive of anatomical features of a subject, wherein the set of coil coordinates are descriptive of a coil location of a magnetic resonance imaging coil, wherein coil data comprising a predefined range of coil positioning coordinates referenced to the anatomical features is associated with the magnetic resonance imaging coil; —determine an allowed range of coil coordinates by mapping the predefined range of coil positioning coordinates to the current coordinate system using the set of subject coordinates and the anato

Abstract: A local coil control apparatus and a wireless local coil in a magnetic resonance imaging system. The apparatus includes a control signal transmission unit, the control signal transmission unit including a wireless receiving unit, a control signal extraction unit, and a control signal distribution unit. The wireless receiving unit receives, by a receiving antenna, a signal from a radiofrequency power amplifier emitted by a body coil of the MRI system, and transmits the signal to the control signal extraction unit; the control signal extraction unit, if it detects that the signal is background noise, generates a control signal instructing a local coil unit to switch to a tuned state, and, if it detects that the signal is broadband noise, generates a control signal instructing the local coil unit to switch to a detuned state, and distributes the control signal to each local coil unit through the control signal distribution unit.

Abstract: The present disclosure is directed to a balun package comprising a set of inductive baluns for a magnetic resonance imaging (MRI) radio frequency (RF) coil. A first resonant circuit and a second resonant circuit each comprise an inductor. A first decoupling circuit leg is between and shared by the first and second resonant circuits and includes one or more decoupling inductors and/or one or more decoupling capacitors. A first cable bundle is wound to form the inductor of the first resonant circuit or is otherwise spaced from and inductively coupled to the inductor of the first resonant circuit.

Abstract: The disclosure relates to a gradient coil unit comprising a hollow cylindrical primary coil longitudinally surrounding a cylinder axis and designed to generate a magnetic field gradient in a first spatial direction, which primary coil comprises two primary conductor pattern pairs. Each primary conductor pattern pair of the two primary conductor pattern pairs is separately drivable, spans one half of the primary coil in each case, and comprises two spiral conductor patterns, which are formed by an electrical conductor implemented as a hollow conductor.

Abstract: The present invention discloses a magnetic resonance fingerprinting imaging method with variable number of echoes, in addition to conventional MRF coding such as changing the excitation pulse angle, the method also introduces the change of the number of echoes, so that quantitative maps of B0, B1+, T1 and T2* can be obtained in a single scan. Further, if the echo time corresponding to the in-phase, opposed-phase and in-phase of water and fat is set for three consecutive echoes, the present invention can also image water and fat, and achieve the accurate quantification of B0, B1+, T1w, T1F, [T2*]w and [T2*]F. Through in vivo experiments and simulations, the effectiveness of the present invention has been proved. Therefore, the present invention can provide multiple information representations for common brain diseases (glioma) and fatty diseases (such as lipoma, fatty liver, etc.), which is conducive to clinical diagnosis and treatment.

Abstract: A method for operating a magnetic resonance apparatus, a magnetic resonance apparatus, and a computer program product are provided. According to the method, an initial MR scan protocol is provided. At least one boundary condition, such as a performance-limiting boundary condition, that is dependent on the patient and/or the MR apparatus is provided. Based on the initial MR scan protocol, at least two sub-protocols are generated. Each of the at least two sub-protocols is checked as to whether the at least one boundary condition is complied with when the respective sub-protocol is applied.

Abstract: Disclosed herein is a medical system (100, 300) comprising a memory (110) storing machine executable instructions (120). The medical system further comprises a computational system (104).

Abstract: This disclosure may provide a system and a method. The method may include obtaining one or more sets of reference signals collected by a coil of a magnetic resonance imaging (MRI) device in a pre-scan. The pre-scan may be performed on a subject before an MRI scan of the subject. The method may also include obtaining a first fault detection model. The first fault detection model may be a trained machine learning model. The method may further include determining whether the coil has a failure based on the one or more sets of reference signals and the first fault detection model.

Abstract: This application relates to a UWB base station anomaly detection method. The method includes: obtaining a first distance that is between each of the N UWB base stations and the UWB tag and that is obtained through measurement; obtaining an estimated value of spatial coordinates of the UWB tag in the first coordinate system based on the first distance and spatial coordinates of each UWB base station in the first coordinate system; obtaining a second distance between each UWB base station and the UWB tag based on the estimated value and the spatial coordinates of each UWB base station in the first coordinate system; and determining, based on the first distance and the second distance that correspond to each UWB base station, whether a UWB base station in the N UWB base stations is abnormal.

Abstract: A positioning apparatus (100) includes a temporary position computation unit (120), a two-dimensional position computation unit (140), a three-dimensional position computation unit (150), and a position aggregation unit (160), and executes three-dimensional positioning of a terminal using a relative angle formed by each base station and the terminal. The temporary position computation unit (120) computes a temporary position of the terminal based on observation data. The two-dimensional position computation unit (140) computes a two-dimensional position of the terminal based on the observation data and the temporary position. The three-dimensional position computation unit (150) computes a three-dimensional position of the terminal based on the observation data and the temporary position. The position aggregation unit (160) determines the position of the terminal by aggregating the two-dimensional position and the three-dimensional position.

Abstract: An emergency beacon for emitting a light in an emergency includes a hollow handle and a hollow head member removably attached to the handle. A head control circuit, a head power supply, and a light emitter are electrically coupled to each other and positioned within the head member. A head power button is operatively coupled to the head control circuit and positioned on a perimeter surface of the head member. The head control circuit is programmed for activating the light emitter to emit a light pattern when the head power button is actuated. A clip is attached to the head member which is configured for removably coupling to an article of clothing when the head member is detached from the handle.

Abstract: A method of processing PRS resources includes: receiving, at a UE, assistance data including a schedule of a plurality of PRS resources having a plurality of beam directions, each of the plurality of PRS resources corresponding to a respective source location; determining a processing priority of the plurality of PRS resources based on a proximity of each of the plurality of beam directions to a respective expected direction from the respective source location to the UE; and measuring one or more of the plurality of PRS resources based on the processing priority.

Abstract: Disclosed is a method comprising obtaining a first set of measurement information associated with a reference signal transmitted from a set of positioning reference units; selecting a subset of positioning reference units from the set of positioning reference units, wherein the selection is based at least on determining that the reference signal transmitted per positioning reference unit of the subset of positioning reference units is measured by a same set of network nodes that measured a reference signal transmitted from a target user device; and refining a location estimate of the target user device based at least on a subset of measurement information from the first set of measurement information, wherein the subset of measurement information is associated with the subset of positioning reference units.

Abstract: A method for mapping a surface using signals transmitted from a single transmitter comprises: receiving signals transmitted from the single transmitter, where each signal has a different propagation path; determining a motion of an antenna of the receiver; generating phasor sequences, where each phasor sequence represents a hypothesis based on antenna motion and a direction of arrival estimate for each received signal; compensating the received signals, local signals, or correlation results from correlating the received signals with the local signals using the phasor sequences based on the hypotheses to generate compensated correlation results; determining a preferred hypothesis in the hypotheses for each received signal that optimizes each correlation result; identifying a direction of arrival for each received signal using the determined hypothesis; determining a point of reflection from the direction of arrival of each received signal; and combining the points of reflection into one or more reflective surf

Abstract: Certain aspects of the present disclosure provide techniques for training and using machine learning models to predict locations of stationary and non-stationary objects in a spatial environment. An example method generally includes measuring, by a device, a plurality of signals within a spatial environment. Timing information is extracted from the measured plurality of signals. Based on a machine learning model, the measured plurality of signals within the spatial environment, and the extracted timing information, locations of stationary reflection points and locations of non-stationary reflection points in the spatial environment are predicted. One or more actions are taken by the device based on predicting the locations of stationary reflection points and non-stationary reflection points in the spatial environment.

Abstract: Embodiments of the present disclosure utilize signals generated by a radio frequency identification (RFID) antenna to locate the antenna. For example, a signal emitted by a transmitter can cause an unpowered mobile device's RFID antenna to generate return signals that are received by multiple antennas. Time difference of arrival (TDOA) and a frequency difference of arrival (FDOA) values can be calculated for the received signals. The calculated TDOA and FDOA values can be correlated using a cross ambiguity function (CAF). The correlated values can be plotted on a map to create a set of correlation maps. The correlation maps can be combined to produce an average map and the antenna can be located by identifying a maximum correlation value on the average map.