Abstract: According to one embodiment, a wireless communication device includes a first receiver; a second transmitter; a controller; and a pre-equalizer. The controller switches a reception frequency of the first receiver from a first frequency to a second frequency and a transmission frequency of the first transmitter from the second frequency to the first frequency, at a first timing. The pre-equalizer pre-equalizes a second signal, based on channel state information of a first signal received in the first receiver before the first timing. The first transmitter transmits the pre-equalized second signal, after the first timing.

Abstract: A blood flow index calculating method includes: obtaining, by a camera, an image capturing a first site of a living body and a second site of the living body; extracting an area of the first site of the living body and an area of the second site of the living body, by a processor; detecting a pulse wave pattern of the first site of the living body from the area of the first site of the living body and detecting a pulse wave pattern of the second site of the living body from the area of the second site of the living body, by the processor; first calculating a delay amount from the pulse wave pattern of the first site and the pulse wave pattern of the second site, by the processor; and second calculating an index related to blood flow by using the delay amount, by the processor.

Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes processing circuitry. The processing circuitry acquires a B1 sensitivity map of an imaging region that includes a subject. The processing circuitry sets a reference value in the B1 sensitivity map. The processing circuitry estimates an error generated when calculating a B1 map setting value based on the B1 sensitivity map, by using the reference value and the B1 sensitivity map. The processing circuitry calculates an amplitude and a phase of an RF pulse based on the error.

Abstract: Disclosed is a refrigerator including an illumination unit that prevents glare and provides sufficient light inside the storage chamber. The refrigerator includes a storage chamber having an opening formed at a front thereof and an illumination unit mounted in the storage chamber. The illumination unit includes a light emitting member to emit light and an optical member to guide light emitted from the light emitting member to travel within a predetermined range of angles. Light emitted from the light emitting member is prevented from proceeding forward by the reflecting member and proceeds to the rear of the storage chamber.

Abstract: According to one embodiment, a magnetic resonance imaging system includes a magnetic resonance imaging apparatus and a receiving coil unit. The apparatus includes first circuitry which transmits an RF pulse based on a first clock. The coil unit includes clock generating circuitry, a receiving coil and first conversion circuitry. The clock generating circuitry generates a second clock. The first conversion circuitry samples a magnetic resonance signal in accordance with the second clock. The coil unit further includes generation circuitry which generates shift information regarding a difference between the first clock and the second clock, and shift correction circuitry which corrects the sampled magnetic resonance signal by using the shift information.

Abstract: A wireless communication device according to an aspect of the present invention includes a transmitter, a receiver, and a signal processor. The transmitter transmits a first signal. The receiver receives a second signal which includes information indicating a transmission channel characteristic at the time of transmission of the first signal. The signal processor acquires the transmission channel characteristic at the time of transmission of the first signal from the second signal, estimates a reception channel characteristic at the time of reception of the second signal from the second signal, and estimates a transmission channel characteristic at a time later than a time associated with the acquired transmission channel characteristic on the basis of the acquired transmission channel characteristic and the estimated reception channel characteristic. The transmitter transmits a third signal on the basis of the estimated transmission channel characteristic.

Abstract: A wireless communication device according to an aspect of the present invention includes a transmitter, a receiver, and a signal processor. The transmitter transmits a first OFDM signal. The receiver receives a second OFDM signal. The signal processor detects a first timing that is a symbol timing for the first OFDM signal, detects a second timing that is a symbol timing for the second OFDM signal, determines a setup value for a symbol length of a new first OFDM signal on the basis of the first timing and the second timing, and generates the new first OFDM signal, the symbol length of which is adjusted to the setup value.

Abstract: According to one embodiment, an antenna arrangement determination device includes a candidate value generator, a calculator and an antenna arrangement determiner. The candidate value generator generates candidate values of a distance between a plurality of antennas, at an interval according to an installation height of an arbitrary one of the antennas, the distance between the antennas being adjustable. The calculator calculates communication quality in a case of setting the distance between the antennas at the candidate values. The antenna arrangement determiner determines a setting value of the distance between the antennas from the candidate values based on the communication quality.

Abstract: According to one embodiment, a memory device includes a nonvolatile first memory, a second memory, a controller, and an interface unit. When receiving a first packet from the interface unit, the controller transmits a second packet to an initiator via the interface unit. In the case where a header of a third packet does not match the second packet, the controller does not store the third packet to a second memory, the third packet being discarded.

Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes processing circuitry. The processing circuitry calculates inverse characteristics of a B1 sensitivity map in an imaging area of a subject. The processing circuitry fits a multi-degree polynomial function to the inverse characteristics of the B1 sensitivity map. The processing circuitry calculates positions in k-space, amplitudes and phases of a plurality of RF pulses by associating the polynomial function fit to the inverse characteristics with a relational expression between the RF pulses and k-space. The processing circuitry controls application of the RF pulses in accordance with the positions, the amplitudes and the phases. The polynomial function and the relational expression have equal degrees.

Abstract: According to an embodiment, a communication device is provided in a movable body and is wirelessly communicable with a transceiver unit and another movable body. A receiver of the device receives transceiver unit information including traffic-light information that the transceiver unit has transmitted to a predetermined channel. An processing circuitry extracts the traffic-light information corresponding to a running direction of the movable body from the transceiver unit information. A transmitter transmits movable body information of the movable body to the predetermined channel. A processing circuitry controls a transmission timing of the movable body information such that a transmission control period becomes a preset first time. A processing circuitry changes the transmission control period to a second time longer than the first time, when the traffic-light information with respect to the running direction indicates a stopping command, and a speed of the movable body is a preset speed or less.

Abstract: An information processing apparatus including a processor configured to execute a process including obtaining pieces of waveform data corresponding to a plurality of parts of a subject, the pieces of waveform data indicating a pulse wave of the subject, calculating a first index value indicating a matching degree between the pieces of waveform data, calculating a second index value indicating a matching degree between a plurality of partial waveform data for each of the pieces of waveform data, the plurality of partial waveforms data being generated by dividing each of the pieces of waveform data at predetermined time intervals, determining whether the pieces of waveform data indicates an arrhythmia based on the first index value and the second index value, and outputting information indicating a result of the determining.

Abstract: A pulse wave analysis apparatus including a memory, and a processor coupled to the memory and the processor configured to execute a process, the process including extracting, from each of a plurality of captured images of a subject, a plurality of image areas corresponding to each of a plurality of parts of the subject respectively, generating pieces of waveform data corresponding to the plurality of parts based on an image analysis for the plurality of image areas, each of the pieces of waveform data indicating a pulse wave of the subject, calculating a first matching degree between the pieces of waveform data, and determining whether a noise is included in the pieces of waveform data based on the first matching degree.

Abstract: An information processing apparatus includes a memory, and a processor coupled to the memory and configured to obtain time series data indicating a time-dependent change of a biological signal value after a meal, determine, based on the obtained time series data, a first feature amount of the time-dependent change of the biological signal value after the meal, determine, based on the determined first feature amount, an index value related to the meal, and output the determined index value.

Abstract: An information processing apparatus includes a memory, and a processor coupled to the memory and configured to acquire time series data of heart rate over a plurality of days, specify a first time zone of a day in which an increasing change of the heart rate satisfies a first condition in common with the time series data on the plurality of days, specify the increasing change in a second time zone of the day for each of the time series data on the plurality of days, the second time zone overlapped with at least a part of the first time zone, specify a meal time based on the increasing of the second time zone for each of the time series data, and output the specified meal time.

Abstract: According to an embodiment, a communication device is provided in a movable body and is wirelessly communicable with a transceiver unit and another movable body. The communication device includes a transmitter, a receiver, a synchronization unit, a registration unit, and a stop control unit. The transmitter transmits movable body information on the movable body to a predetermined channel. The receiver receives transceiver unit information that the transceiver unit has transmitted to the predetermined channel. The synchronization unit performs synchronization of reception timing when the transceiver unit information can be received. The registration unit registers a communication area of the transceiver unit calculated based on a position where the other movable body receives the transceiver unit information in storage.

Abstract: A pulse wave detection method includes obtaining an image obtained by photographing a subject with an imaging device, extracting intensities representative of signal components of a specific frequency band for respective wavelength components among signals of a plurality of wavelength components included in the image, calculating, using the intensities extracted for the respective wavelength components, a weight coefficient by which a signal is multiplied when the signals are calculated between the wavelength components to minimize an arithmetic value of the signal components in the specific frequency band after multiplication, multiplying at least one of the signals of the respective wavelength components by the weight coefficient, performing arithmetic operation on the signals between the wavelength components after multiplication by the weight coefficient, and detecting pulse waves of the subject using a signal after the arithmetic operation.

Abstract: An information processing method executed by a processor included in an information processing apparatus coupled to a sensor, the method includes acquiring information on a living body from the sensor; estimating, by using estimation models, indices other than one unknown index among three indices including an index being related to a feature of a change with time of a biological response signal value derived from a meal after completion of the meal, an index regarding energy consumed by the living body in a time period, and an index regarding a change in an amount of energy stored in the living body in the time period, based on the acquired information; estimating the one unknown index based on a relation satisfied by the three indices and a result of the estimating indices; and generating at least one of model parameters of the estimation models based on the estimated three indices.

Abstract: A pulse wave detection apparatus detects a signal, and calculates a correlation coefficient between waveforms of the signal included in a first window and a second window having a predetermined duration, the correlation coefficient being smaller when a difference between dispersion of the amplitude value in the first window and dispersion of the amplitude value in the second window becomes larger.

Abstract: Disclosed is a refrigerator including an illumination unit that prevents glare and provides sufficient light inside the storage chamber. The refrigerator includes a storage chamber having an opening formed at a front thereof and an illumination unit mounted in the storage chamber. The illumination unit includes a light emitting member to emit light and an optical member to guide light emitted from the light emitting member to travel within a predetermined range of angles. Light emitted from the light emitting member is prevented from proceeding forward by the reflecting member and proceeds to the rear of the storage chamber.