Abstract: A device implementing a real time clock integrated module for outputting data indicating a time-of-day. The real time clock integrated module includes: a high-precision oscillator or atomic clock having an accuracy of 50 ppb (parts per billion) or better; a timing circuit for generating time-of-day data according to a clock signal outputted from the oscillator or atomic clock; a power source allowing the timing circuit to maintain time when the device is powered off. The timing circuit includes a real time clock and a logic device storing a timestamp. The timing circuit is configured when the device is powered off to update the timestamp value based on the oscillator or atomic clock and to generate a time reference signal and to provide to the device the updated timestamp value and the time reference signal that the device can use as a time reference once the device is powered up again.

Abstract: An optical lattice clock includes a clock transition space having disposed therein an atom group trapped in an optical lattice, and a triaxial magnetic field correction coil for correcting the magnetic field of the clock transition space. Additionally, in a correction space that includes the clock transition space and is larger than the clock transition space, a photoreceiver promotes the clock transition of the atom group trapped in the optical lattice and acquires a clock transition frequency distribution for the correction space. Further, a corrector corrects the magnetic field of the triaxial magnetic field correction coil on the basis of the frequency distribution measured by the photo receiver.

Abstract: An oscillating device includes a heater, a thermoelectric cooler, a frequency source, a temperature controlled circuit, and a voltage controlled oscillation circuit. When the ambient temperature is in a low-temperature range, the temperature controlled circuit drives the heater to a target temperature to adjust an operating temperature of the frequency source. When the ambient temperature is in a high-temperature range, the temperature controlled circuit drives the thermoelectric cooler to the target temperature to adjust the operating temperature of the frequency source, and the voltage controlled oscillation circuit drives the frequency source to reduce a frequency variation of the frequency source resulted from the variation of the ambient temperature. Alternatively, the heater or the voltage controlled oscillation circuit may be omitted.

Abstract: An atomic clock employs alkali metal atoms such as cesium normally used for microwave atomic clocks but with optical stimulation. While alkali metals provide light emissions having a spectral width being as much as 107 wider (and hence less precise) than alkali earth materials commonly targeted for optical atomic clocks, the present inventors have determined that this disadvantage is significantly reduced by improved signal-to-noise ratio in the obtained signal making practical an atomic clock with improved size, weight, and power consumption.

Abstract: A device includes: a wireless power receiver configured to receive wireless power from an external device external to a body; a capacitor configured to store therein the wireless power received by the wireless power receiver; a wireless transceiver configured to transmit, to the external device, information associated with stored energy of the capacitor and scheduled energy to be used; and a processor configured to operate with the stored energy of the capacitor and process a biosignal of the body, wherein an operation of the external device and an operation of the device are synchronized, and a wireless power quantity of the wireless power to be received by the wireless power receiver from the external device is determined based on the information transmitted from the wireless transceiver to the external device.

Abstract: An atomic clock stabilized or disciplined by tooth selected from a phononic comb of frequency teeth. A method of stabilizing an atomic clock having a reference oscillator, the method comprising selecting a particular tooth from a phononic comb of frequency teeth and applying a correction signal to said reference oscillator, the correction signal being based the selected tooth of said phononic comb. The disclosed technology is not limited to stabilizing reference oscillators associated with atomic clocks and thus may be utilized to stabilize reference oscillators whether or not they are interfaces with an atomic clock.

Abstract: A circuit device includes an oscillation circuit that generates an oscillation signal using a resonator, a temperature detection circuit that outputs temperature detection data, a temperature compensation circuit, and a temperature detection rate control circuit. The temperature compensation circuit performs temperature compensation on an oscillation frequency of the oscillation signal based on the temperature detection data. The temperature detection rate control circuit controls a temperature detection rate at which the temperature detection circuit executes temperature detection. At this time, the temperature detection rate control circuit controls the temperature detection rate based on a variation in the temperature detection data.

Abstract: A battery module includes a battery, a bidirectional DC-DC converter, and a controller. The bidirectional DC-DC converter may convert a direct-current voltage output from the battery and thereafter output the direct-current voltage to a load. The controller is configured or programmed to perform constant voltage control of the bidirectional DC-DC converter and receive a stop warning signal providing advance notice that output of a power supply is to stop. The controller is configured or programmed to, before receiving the stop warning signal, perform control such that an output voltage of the bidirectional DC-DC converter is lower than a first target voltage, and, after receiving the stop warning signal and before the output of the power supply stops, increase the output voltage of the bidirectional DC-DC converter to the first target voltage or higher.

Abstract: A foreign object detection device includes a detection coil unit including a detection coil substrate (220) and a plurality of coils (242), which are mounted on a surface of the detection coil substrate (220) and each include a conductive pattern turned around the Z axis, and a detector (26) connected to the coils (242) to detect the existence of a foreign object on the basis of a vibration signal output when each of the coils (242) is excited. The coils (242) each define an opening. The detection coil substrate (220) has a through hole (228) extending through the detection coil substrate (220), and a component space for accommodating a switch (248) or a wiring pattern (250), within each of the openings of the coils (242) as seen in the Z-axis direction.

Abstract: According to one embodiment, a calculating device includes nonlinear oscillators, connectors, and a controller. One of the connectors connects at least two of the nonlinear oscillators. The nonlinear oscillators include first and second nonlinear oscillators. The first nonlinear oscillator includes a first circuit part and a first conductive member. The first circuit part includes first and second Josephson junctions. The second nonlinear oscillator includes a second circuit part and a second conductive member. The second circuit part includes third and fourth Josephson junctions. Numbers of the connectors connected to the first and second connectors are first and second numbers, respectively. The second number is greater than the first number. The controller performs at least a first operation of supplying a first signal to the first conductive member and supplying a second signal to the second conductive member. The second signal is different from the first signal.

Abstract: A power transmitter includes a control and communications unit and an inverter circuit configured to receive input power and convert the input power to a power signal. The power transmitter further includes a shielding comprising a ferrite core including a magnetic backing and a magnetic ring, the magnetic backing and magnetic ring, in combination, defining a concave cavity, the magnetic ring defining a bottom portion, a top portion, and an inner side wall between the bottom portion and the top portion, the inner sidewall defining an outward extending shape, the outward extending shape extending radially outward from the bottom portion to the top portion. The power transmitter further includes a coil configured to transmit the power signal to a power receiver, the coil formed of wound Litz wire and positioned within the concave cavity of the shielding and radially inward from the inner wall.

Abstract: A power transmitter includes a coil configured to transmit the power signal to a power receiver, the coil formed of wound Litz wire and including a first coil portion and a second coil portion, the second coil portion positioned radially outward of the first coil portion. The power transmitter includes a shielding comprising a first shield portion and a second shield portion. The first shield portion defining a first cavity configured such that the ferrite core substantially surrounds all but the top face of the first coil portion. The second shield portion includes a magnetic backing and a magnetic ring, which, in combination, define a second cavity, the magnetic ring defining a bottom portion, a top portion, and an inner sidewall defining an outward extending shape extending radially outward from the bottom portion to the top portion, the second coil portion positioned within the second cavity.

Abstract: Voltage-controlled oscillation circuitry includes multiple cores and multiple mode or gain boosters coupled between the multiple cores. To prevent an undesired operating mode of the voltage-controlled oscillation circuitry from dominating a desired operating mode (e.g., an in-phase operating mode or an out-of-phase operating mode), the mode boosters may increase a desired gain of the desired operating mode and decrease an undesired gain of the undesired operating modes. In particular, mode boosters coupled to terminals of the cores that are associated with the desired operating mode may be enabled, while mode boosters coupled to terminals of the cores that are associated with the undesired operating mode may be disabled.

Abstract: An oscillator includes a first resonator element, a circuit element configured to oscillate the first resonator element to generate an oscillation signal, a first package which includes a substrate, and has a housing space configured to house the first resonator element and the circuit element at one principal surface side of the substrate, a second resonator element which is disposed at another principal surface side of the substrate, and an oscillation frequency of which is controlled based on the oscillation signal, and a leg part which is disposed at the another principal surface side of the substrate, and which is arranged so as to surround the second resonator element in a plan view of the substrate.

Abstract: An oscillator is provided. The oscillator includes two reverse amplification elements, and each of the reverse amplification elements forms a self-feedback structure by using an inductor. Output ends of the two reverse amplification elements are coupled to each other by using one or more inductors, and input ends of the two reverse amplification elements are coupled to each other by using a capacitor. A capacitance value of the capacitor may be adjusted, to change an oscillation frequency of a differential output oscillation signal output by the oscillator.

Abstract: An electronic component package includes a lid, a first layer, a second layer disposed between the first layer and the lid and configuring a first frame, a third layer disposed between the second layer and the lid and configuring a second frame, a bonding member bonding the third layer to the lid, and a via wire electrically coupled to the lid and penetrating the second frame, in which, when an inner diameter of a first corner portion of the first frame is denoted by R1 and an inner diameter of a second corner portion of the second frame overlapping the first corner portion in a plan view is denoted by R2, R1<R2, and an inner surface of the second corner portion protrudes more than an inner surface of the first corner portion in a cross-sectional view.

Abstract: A mobile communication device that is configured to cancel interference within received millimeter wave band signals. The device includes a receiver circuit that is configured to receive a millimeter wave band signal, adjust gain provided to the millimeter wave band signal at a first amplifier, cancel interference in millimeter wave band signal after gain is adjusted by the first amplifier, and adjust gain provided to the millimeter wave band signal at a second amplifier after interference is cancelled.

Abstract: A clock integrated circuit is provided. The clock integrated circuit includes: a first clock generator which includes a crystal oscillator configured to generate a first clock signal; and a second clock generator which includes a resistance-capacitance (RC) oscillator and a first frequency divider, and is configured to: generate a second clock signal using the first frequency divider based on a clock signal output from the RC oscillator; perform a first calibration operation for adjusting a frequency division ratio of the first frequency divider to a first frequency division ratio based on the first clock signal; and perform a second calibration operation for adjusting the first frequency division ratio to a second frequency division ratio based on a sensed temperature.

Abstract: A wireless power-transmission apparatus includes at least one antenna element disposed at a specific position in a three-dimensional space having a predetermined shape and size, to transmit a power transmission beam, an acquirer to acquire an inclination angle of the antenna element to a plane direction of a reference plane and a height of the antenna element to the reference plane, and a controller to control at least one of antenna power and a power transmission direction of the power transmission beam so that interference power of the power transmission beam toward an outside of the three-dimensional space becomes equal to or smaller than a predetermined allowable value when the antenna element is disposed at the acquired inclination angle and height.

Abstract: A semiconductor integrated circuit has a first output node and a second output node that complementarily outputs an oscillation signal, a capacitance circuit, an inductor, a first inverter and a second inverter connected in parallel and in opposite directions, a bias circuit that supplies a bias voltage to the capacitance circuit, and a control circuit that controls the bias circuit and supplies a reference voltage for controlling an oscillation frequency of the oscillation signal to the capacitance circuit. The capacitance circuit includes a first variable capacitance element and a second variable capacitance element connected in series, and the control circuit controls the bias voltage based on a change in an oscillation frequency of the oscillation signal when a voltage level of the reference voltage supplied to a connection node of the first variable capacitance element and the second variable capacitance element is changed in a plurality of ways.