Abstract: According to one embodiment, an anomaly detection apparatus includes a processing circuit. The processing circuit is configured to: acquire measured values from sensors installed in a system, a first function, a first threshold, and a second function to output a second threshold; generate the predicted values based on the measured value and the first function; detect that a deviation between the measured values and the predicted values exceeds the first threshold; calculate the feature quantities based on the measured values; and determine whether a number of consecutive times is equal to or larger than the second threshold to detect an anomaly or a sign of the anomaly.

Abstract: A communication device includes a transmitter that, in a first operation, distorts an input signal through a digital predistortion unit, converts the distorted input signal into an analog signal, performs frequency up-conversion on the converted analog signal to generate a first signal, amplifies the generated first signal through a power amplifier, and couples the amplified first signal; a receiver that, in the first operation, receives the coupled first signal from the transmitter, performs frequency down-conversion on the coupled first signal so as to generate a second signal, and converts the generated second signal into a digital signal through one or more analog-to-digital converters that are turned on, among a plurality of analog-to-digital converters; and a processor that, in the first operation, causes one or more of the plurality of analog-to-digital converters to be turned on and a remainder of the plurality of analog-to-digital converters to be turned off.

Abstract: The present disclosure relates to a communication technique for merging, with an IoT technology, a 5G communication system for supporting a higher data transmission rate than a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security- and safety-related services, and the like) on the basis of a 5G communication technology and an IoT-related technology. The present disclosure discloses a method for calibration of a phased array antenna.

Abstract: A skin state determination method includes: acquiring a first measurement result including data obtained by a spectral camera measuring the skin of a user at a first time point, second time points before the first time point being different from each other; estimating, on the basis of the first measurement result, a first estimation result including at least one of a skin moisture content or hidden blemish conditions of the user at the first time point; and determining a skin state of the user on the basis of the first estimation result and second estimation results based on second measurement results, each of the second measurement results including data obtained by the spectral camera measuring the skin of the user at each of the second time points.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE).

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-Generation (4G) communication system such as long-term evolution (LTE). The present disclosure provides a device and a method for calibrating a phased array antenna. A method for calibrating a phased array antenna according to various embodiments of the disclosure comprises the processes of: controlling a first radio frequency (RF) chain so as to transmit a first signal at a first phase, thereby determining the phase difference between the first phase and a reference phase; controlling the first RF chain so as to transmit a second signal at a second phase, thereby determining the phase condition of the phase difference; and calibrating the first RF chain on the basis of the phase difference and the phase condition. The reference phase may be the phase of a reference signal transmitted from a reference RF chain.

Abstract: The present disclosure relates to pretreating a magnetic recording head to increase the lifetime of the magnetic media drive. A transparent smear is purposefully formed on the magnetic recording head to ensure the magnetic recording head does not overheat and lead to a short drive lifetime. The transparent smear is formed from material found in the magnetic media. The transparent smear is formed by pretreating the magnetic recording head with the transparent material from the magnetic media. The pretreating occurs without writing any data to the magnetic media. Once the transparent smear is in place, writing may occur. The magnetic recording head can be retreated at a later time should the transparent smear degrade. Furthermore, if an optically absorbing smear develop, it can be removed and a new transparent smear may be formed.

Abstract: The present disclosure relates to a 5G or pre-5G communication system to be provided to support a higher data transmission rate after a 4G communication system such as LTE. An embodiment of the present specification relates to beamforming in a mobile communication system and comprises a step for configuring an operation of a limiter circuit for adjusting amplitude of a signal received by a receiver, and receiving the signal according the configuration. According to various embodiments of the present specification, a limiter circuit employed in a receiver supporting beamforming can prevent a reception circuit from being damaged. Further, when reception antenna gain is low or a high signal-to-noise ratio is required, a received signal is not allowed to pass through the limiter circuit so that the received signal can be prevented from deteriorating.

Abstract: The present disclosure relates to pretreating a magnetic recording head to increase the lifetime of the magnetic media drive. A transparent smear is purposefully formed on the magnetic recording head to ensure the magnetic recording head does not overheat and lead to a short drive lifetime. The transparent smear is formed from material found in the magnetic media. The transparent smear is formed by pretreating the magnetic recording head with the transparent material from the magnetic media. The pretreating occurs without writing any data to the magnetic media. Once the transparent smear is in place, writing may occur. The magnetic recording head can be retreated at a later time should the transparent smear degrade. Furthermore, if an optically absorbing smear develop, it can be removed and a new transparent smear may be formed.

Abstract: Provided are a radio frequency (RF) signal transmission apparatus and a control method of the RF signal transmission apparatus, in which a local oscillator (LO) leakage signal may be suppressed. The RF signal transmission apparatus may perform beamforming to form a beam based on a plurality of RF signals generated in a plurality of transmission chains, measure magnitude of an LO leakage signal of the beam formed by performing beamforming, and generate an LO leakage suppression signal based on the magnitude of the LO leakage signal.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method for operating a terminal in a wireless communication system may comprise the steps of: receiving a first signal by using a first number of antennas during a first downlink interval; receiving a second signal by using a second number of antennas during a second downlink interval; and transmitting a third signal by using the second number of antennas during an uplink interval, with output power compensated on the basis of the first signal and the second signal.

Abstract: The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). A method of operating an electronic device in a wireless communication system is provided. The method includes inputting training signals into a first loopback route and a second loopback route, determining a loopback gain and a loopback phase, based on a first training signal passing through the first loopback route and a second training signal passing through the second loopback route, determining a frequency domain compensation filter, based on the loopback gain and the loopback phase, determining an FIR filter and a DC offset, based on the frequency domain compensation filter, and compensating for a transmission signal and a reception signal, based on the FIR filter and the DC offset.

Abstract: A system includes a biological sensor measuring biological data of a plurality of customers, a storage storing a plurality of attendant-associated data records, and a processor. Each attendant-associated data record includes the biological data of a customer, a seat identifier, and an attendant identifier associated with each other. The processor calculates at least one stress indicator of at least one customer. Each stress indicator is calculated based on the biological data in one of at least one attendant-associated data record extracted from the plurality of attendant-associated data records and associated with a first attendant identifier. The processor further calculates an evaluation value indicated by the first attendant identifier based on the at least one stress indicator of the at least one customer. The evaluation value is updated based on a registered evaluation value identified by the first attendant identifier stored in the storage, and the calculated stress indicator.

Abstract: An apparatus and method are provided for a communication scheme for converging a 5G communication system for supporting a higher data transfer rate than a post-4G system with the IoT technology. A method includes configuring a loopback path between a transmitter and a receiver; transmitting a preconfigured signal from the transmitter to the receiver through the loopback path; identifying an image signal, wherein the image signal includes a distorted signal of the preconfigured signal; determining a gain error value and a phase error value based on the preconfigured signal and the image signal; and performing I/Q calibration based on the gain error value and the phase error value. A subcarrier in which the preconfigured signal is transmitted and a subcarrier in which the image signal is generated do not overlap.

Abstract: A stress management system comprises: a first sensor that detects biological data of a user; a second sensor that detects life log data indicating an action history of the user; a generator that generates stress data using the biological data, the stress data indicating a time series variation of a stress level of the user; an estimator that, when the stress level of the user included in the stress data exceeds a first threshold, estimates whether or not stress of the user is interpersonal stress caused by contact with another person, using the life log data; and a notifier that notifies the user of a result of the estimation by the estimator and notifies a notification target person different from the user of notification content based on the result of the estimation by the estimator.

Abstract: The present disclosure relates to pretreating a magnetic recording head to increase the lifetime of the magnetic media drive. A transparent smear is purposefully formed on the magnetic recording head to ensure the magnetic recording head does not overheat and lead to a short drive lifetime. The transparent smear is formed from material found in the magnetic media. The transparent smear is formed by pretreating the magnetic recording head with the transparent material from the magnetic media. The pretreating occurs without writing any data to the magnetic media. Once the transparent smear is in place, writing may occur. The magnetic recording head can be retreated at a later time should the transparent smear degrade. Furthermore, if an optically absorbing smear develop, it can be removed and a new transparent smear may be formed.

Abstract: The present disclosure relates to a magnetic recording medium for a magnetic media drive. Absorbing smears can develop on magnetic recording heads during operation. The absorbing smears lead to shortened drive lifetime. Transparent smears, on the other hand, do not have as deleterious of an impact on drive lifetime as compared to absorbing smears. By doping the medium with a dopant that can lead to development of transparent smears, the formation of absorbing smears can be reduced or even eliminated, which leads to a longer drive lifetime. The dopant can be disposed in the capping layer of the medium or in the absorbing overcoat layer. The dopant will migrate through the medium to the top surface of the medium during operation. From the top surface of the medium, the dopant will deposit on the magnetic head and form a transparent smear.

Abstract: Provided are a radio frequency (RF) signal transmission apparatus and a control method of the RF signal transmission apparatus, in which a local oscillator (LO) leakage signal may be suppressed. The RF signal transmission apparatus may perform beamforming to form a beam based on a plurality of RF signals generated in a plurality of transmission chains, measure magnitude of an LO leakage signal of the beam formed by performing beamforming, and generate an LO leakage suppression signal based on the magnitude of the LO leakage signal.

Abstract: A heat-assisted magnetic recording (HAMR) hard disk drive has a gas-bearing slider supporting a near-field transducer (NFT) and a NFT temperature sensor (NTS). An optional first IVC circuitry may provide a bias voltage to the slider body to assure substantially zero electrical potential between the slider body and the disk to minimize slider-disk contact and lubrication pick-up. A second IVC circuitry operates independently of the first IVC circuitry and provides a negative bias voltage to the NTS (and the connected NFT) relative to the disk to minimize the adverse effects of excessive heating on the NFT.

Abstract: The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). A method of operating an electronic device in a wireless communication system is provided. The method includes inputting training signals into a first loopback route and a second loopback route, determining a loopback gain and a loopback phase, based on a first training signal passing through the first loopback route and a second training signal passing through the second loopback route, determining a frequency domain compensation filter, based on the loopback gain and the loopback phase, determining an FIR filter and a DC offset, based on the frequency domain compensation filter, and compensating for a transmission signal and a reception signal, based on the FIR filter and the DC offset.