Abstract: According to various embodiment of the present invention, in a diagnosis system including a sensing module that senses the state of a motor is installed in a car, disclosed are a method for determining failure of a motor in a car comprising the steps of: (a) acquiring sensed values by sensing the state variables of the motor by the sensing module; (b) extracting two or more feature values by converting the sensed values acquired by the sensing module; (c) converting the two or more feature values into scaled feature values based on at least one scaling algorithm; and (d) determining a state of the motor based on a learned labeling algorithm and the scaled feature value, and setting a label representing the state of the motor to the scaled feature value corresponding to the state of the motor.

Abstract: Provided is a device-to-device (D2D)-based wireless power receiving device including an observation part configured to monitor a battery, an estimator configured to estimate usage and a workload of the battery on the basis of a result of monitoring the battery, a mode determiner configured to determine required power of the battery on the basis of the usage and the workload, and determine a reception mode according to the required power, and a power receiver configured to wirelessly receive power from another device according to the reception mode. Accordingly, wireless power charging efficiency can be maximized.

Abstract: According to various embodiment of the present invention, in a diagnosis system including a sensing module that senses the state of a motor is installed in a car, disclosed are a method for determining failure of a motor in a car comprising the steps of: (a) acquiring sensed values by sensing the state variables of the motor by the sensing module; (b) extracting two or more feature values by converting the sensed values acquired by the sensing module; (c) generating two clusters which classify and include the two or more feature values based on the two or more feature values and determining a normal cluster among the two clusters; and (d) determining the state of the motor as a failure-expected state or a safe state by applying at least one classifier to the feature values included in the normal cluster.

Abstract: Provided is a power supply apparatus for self-powered device including a power module configured to supply first driving power, a sensor module configured to be operated by the first driving power, and an energy harvesting module configured to select energy power with a higher signal intensity from among energy power from energy sources and harvest energy using the selected energy power as second driving power.

Abstract: Provided are a scalable analog passive intermodulation (PIM) module, a method of controlling analog PIM, a signal processing circuit, and a sensor device. The scalable analog PIM module includes a first plural number of digital-to-analog converters (DACs), a first plural number of static random access memory (SRAM) calculators connected to the first plural number of DACs, at least one analog-to-digital converter (ADC) connected to the first plural number of SRAM calculators and configured to convert an analog convolution result signal into digital convolution data, and an analog PIM controller configured to output an enable control signal for enabling a second number, which is equal to or less than first plural number, of SRAM calculators among the first plural number of SRAM calculators to the first plural number of SRAM calculators on the basis of the convolution data output from the ADC.

Abstract: A power radio frequency (RF) switch used in wireless communication is disclosed. A boosted switching control signal, which swings between a boosted supply voltage in which a system supply voltage is boosted and a negative supply voltage in which a polarity of the system supply voltage is inverted, is applied to a gate of a high-voltage transistor. Further, a substrate control signal which is synchronized with the boosted switching control signal, and swings between the negative supply voltage and a reference voltage may be applied to a substrate of the high-voltage transistor thereof.

Abstract: Disclosed is a technology related to a low noise amplifier applied between an RF receiver and an RF switch. A phase difference matching circuit having the same phase difference as a positive gain amplifier is added to an output terminal of an attenuator of a low noise amplifier having a variable gain switching structure. In addition, a variable impedance circuit connected to an output terminal of the positive gain amplifier and an output terminal of a phase difference matching unit to finely adjust the phase difference of each output terminal may be further included.

Abstract: Provided is a maximum power point tracking (MPPT) apparatus for an energy harvesting system and an MPPT control method. A count value of the time for an output voltage of a direct current (DC)-DC converter to reach a high reference voltage is used to change and output a control parameter of the DC-DC converter for maximum power.

Abstract: A current sensor automatically adjusting an offset voltage, includes an input corrector, upon receiving a first voltage, a second voltage, and a control signal, configured to correct either one or both of the first voltage and the second voltage to reduce an absolute value of a difference between the first voltage and the second voltage based on the control signal, and output a correction result; an input amplifier configured to amplify a voltage output from the input corrector; an output amplifier configured to generate an output voltage when a voltage amplified by the input amplifier is input; a controller including a switch connected to one of voltages amplified by the input amplifier to be grounded when a difference between the first voltage and the second voltage is larger than a first threshold value; and a correction circuit controller configured to generate the control signal to input to the input corrector.

Abstract: Disclosed are an artificial intelligence algorithm-based wireless power transmitter, wireless power receiver, and wireless power charging system that are capable of high-speed response to environmental changes and that can optimize the power efficiency of a wireless power receiver, estimate a dynamic location from a signal received from the wireless power receiver using artificial intelligence technology, and dynamically transmit wireless power to a prioritized wireless power receiver according to a power state.

Abstract: Disclosed is a power supply apparatus including a DC-DC converter implemented as one integrated circuit. A duty of a switching pulse of a DC-DC conversion unit is controlled according to a phase difference between a feedback clock signal and a reference clock signal having a frequency proportional to an output voltage of the DC-DC conversion unit. The duty of the switching pulse may be controlled from an output of a charge pump to be charged and discharged according to the phase difference signal between the feedback clock signal and the reference clock signal.

Abstract: The present invention provides a technique for a power supply, and particularly, a buck-boost DC-DC converter which is advantageous for energy harvesting from a low voltage. An LC resonant unit generates a pair of clock type signals having phases opposite to each other from an input signal. These signals are supplied to the clock input terminals of the Dickson charge pumps connected in series and converted into power signals having an amplified voltage so as to match the rated input specification of the buck-boost DC-DC converter of a post-stage.

Abstract: A technology related to an electronic circuit, specifically, a phase locked loop or a frequency synthesizing apparatus, is disclosed. The frequency synthesizing apparatus includes an injection locked frequency divider and a replica frequency divider having the same circuit configuration as the injection locked frequency divider. A control value required for self-oscillating at a target frequency using the replica frequency divider is determined. When the injection locked frequency divider fails injection locking on a first attempt, the injection locking may be attempted using the determined control value. On the first attempt, the control value of the injection locked frequency divider may be determined and stored in advance according to a temperature and a supply voltage.

Abstract: A technology related to an electronic circuit, specifically, a phase locked loop or a frequency synthesizing apparatus, is disclosed. The frequency synthesizing apparatus includes an injection locked frequency divider and a replica frequency divider having the same circuit configuration as the injection locked frequency divider. A control value required for self-oscillating at a target frequency using the replica frequency divider is determined. When the injection locked frequency divider fails injection locking on a first attempt, the injection locking may be attempted using the determined control value. On the first attempt, the control value of the injection locked frequency divider may be determined and stored in advance according to a temperature and a supply voltage.

Abstract: A power management apparatus, includes an artificial intelligence (Al) controller configured to monitor a user pattern, based on frequency band selection information of all users using a base station, to predict the user pattern, and a DC-DC converter configured to output a supply voltage based on the predicted user pattern.

Abstract: The present invention relates to an integrated circuit for processing biosignals, a biosignal processing apparatus, and a biosignal processing system, and the integrated circuit includes: a digital conversion unit for converting an analog biosignal input through a biosignal input terminal into a digital biodata; and an AI block for processing a plurality of biodata converted through the digital conversion unit according to an artificial intelligence processing flow, and outputting a result data according to processing of the plurality of biodata.

Abstract: A current sensor automatically adjusting an offset voltage, includes an input corrector, upon receiving a first voltage, a second voltage, and a control signal, configured to correct either one or both of the first voltage and the second voltage to reduce an absolute value of a difference between the first voltage and the second voltage based on the control signal, and output a correction result; an input amplifier configured to amplify a voltage output from the input corrector; an output amplifier configured to generate an output voltage when a voltage amplified by the input amplifier is input; a controller including a switch connected to one of voltages amplified by the input amplifier to be grounded when a difference between the first voltage and the second voltage is larger than a first threshold value; and a correction circuit controller configured to generate the control signal to input to the input corrector.

Abstract: As inputs of a controller of a direct current (DC)-DC converter are sampled for a predetermined time and thus two-dimensional state information in which one axis is an input physical quantity and the other axis is a time is generated, the two-dimensional state information is processed by a convolutional neural network to determine and output one of a plurality of control signals. An artificial intelligence control part may operate in accordance with a plurality of operation conditions or dynamically determined operation conditions by applying different artificial intelligence engines according to operation modes.

Abstract: Provided is a maximum power point tracking (MPPT) apparatus for an energy harvesting system and an MPPT control method. A count value of the time for an output voltage of a direct current (DC)-DC converter to reach a high reference voltage is used to change and output a control parameter of the DC-DC converter for maximum power.

Abstract: Disclosed is a power supply apparatus including a DC-DC converter implemented as one integrated circuit. A duty of a switching pulse of a DC-DC conversion unit is controlled according to a phase difference between a feedback clock signal and a reference clock signal having a frequency proportional to an output voltage of the DC-DC conversion unit. The duty of the switching pulse may be controlled from an output of a charge pump to be charged and discharged according to the phase difference signal between the feedback clock signal and the reference clock signal.