Abstract: A medical imaging device includes: a plurality of image sensors each configured to capture a subject image to output a pixel signal; and a signal integration unit configured to convert a plurality of the pixel signals output from the plurality of image sensors into pixel signals corresponding to a specific transmission standard.

Abstract: A semiconductor laser includes a ridge structure formed on an n-type semiconductor substrate, and a buried layer buried so as to cover both sides of the ridge structure opposed to each other in a direction perpendicular to an extending direction of the ridge structure. The ridge structure includes an n-type cladding layer, an active layer, and a p-type cladding layer formed sequentially from a side of the n-type semiconductor substrate. The buried layer includes a p-type semiconductor layer in contact with both side surfaces of the p-type cladding layer and the active layer in the ridge structure, and a semi-insulating layer, and the p-type semiconductor layer is not in contact with the n-type cladding layer of the ridge structure.

Abstract: A signal processing apparatus relays communication of control signals between a controller and a plurality of processing modules, and includes: a communication device configured to perform communication of the control signals with the plurality of processing modules; a plurality of first storages provided respectively to correspond to the plurality of processing modules, the plurality of first storages being configured to store the control signals written by the controller; a second storage configured to store: address information indicating each communication address assigned to each of the plurality of processing modules; and correspondence information indicating correspondence relationships between the plurality of first storages and a plurality of module-side storages respectively included in the plurality of processing modules; and a synchronization processor configured to synchronize the plurality of first storages with the plurality of corresponding module-side storages via the communication device bas

Abstract: A motor drive device receiving AC power supplied from an AC source and driving a motor includes: a converter circuit converting the AC power into DC power; an inverter circuit converting the DC power into AC power to drive the motor; and a current detector detecting input current flowing on the AC side of the converter circuit. The motor drive device also includes a converter device and an inverter device. The converter device includes a control unit performing control such that input current or input power supplied to the converter circuit does not exceed an upper limit, based on a value detected by the current detector. The inverter device includes a control unit detecting voltage of a DC bus connecting the converter circuit and the inverter circuit, and limiting the output power of the inverter circuit when a detection value of the bus voltage decreases to a set lower limit.

Abstract: Provided is a filter device to be connected between an AC power source (1) and a PWM converter (2), which includes a first AC reactor (3), a second AC reactor (4) that is connected between the PWM converter (2) and the first AC reactor (3), a filter capacitor (5) whose one end is connected to a connecting portion (9) between the first AC reactor (3) and the second AC reactor (4), and a housing (15) having a cooling air inlet (16) and a cooling air outlet (17) and containing the first AC reactor (3) and the second AC reactor (4), wherein the first AC reactor (3) is disposed upwind of the second AC reactor (4).

Abstract: A signal processing apparatus relays communication of control signals between a controller and a plurality of processing modules, and includes: a communication device configured to perform communication of the control signals with the plurality of processing modules; a plurality of first storages provided respectively to correspond to the plurality of processing modules, the plurality of first storages being configured to store the control signals written by the controller; a second storage configured to store: address information indicating each communication address assigned to each of the plurality of processing modules; and correspondence information indicating correspondence relationships between the plurality of first storages and a plurality of module-side storages respectively included in the plurality of processing modules; and a synchronization processor configured to synchronize the plurality of first storages with the plurality of corresponding module-side storages via the communication device bas

Abstract: A motor drive device receiving AC power supplied from an AC source and driving a motor includes: a converter circuit converting the AC power into DC power; an inverter circuit converting the DC power into AC power to drive the motor; and a current detector detecting input current flowing on the AC side of the converter circuit. The motor drive device also includes a converter device and an inverter device. The converter device includes a control unit performing control such that input current or input power supplied to the converter circuit does not exceed an upper limit, based on a value detected by the current detector. The inverter device includes a control unit detecting voltage of a DC bus connecting the converter circuit and the inverter circuit, and limiting the output power of the inverter circuit when a detection value of the bus voltage decreases to a set lower limit.

Abstract: Provided is a filter device to be connected between an AC power source (1) and a PWM converter (2), which includes a first AC reactor (3), a second AC reactor (4) that is connected between the PWM converter (2) and the first AC reactor (3), a filter capacitor (5) whose one end is connected to a connecting portion (9) between the first AC reactor (3) and the second AC reactor (4), and a housing (15) having a cooling air inlet (16) and a cooling air outlet (17) and containing the first AC reactor (3) and the second AC reactor (4), wherein the first AC reactor (3) is disposed upwind of the second AC reactor (4).

Abstract: A power conversion device converts three-phase AC power into DC power by two-arm PWM modulation control and includes a main circuit that is constituted by a plurality of switching elements that are bridge-connected therein; a voltage-command generation unit that generates a voltage command value for the main circuit; a current detection unit that detects at least one of output currents of the main circuit; a power-factor calculation unit that calculates a power factor on the basis of the output current and the voltage command value; a carrier-signal generation unit that generates a carrier signal of a frequency corresponding to the power factor; and a PWM-signal generation unit 6 that compares the voltage command value and the carrier signal to generate a PWM signal that executes switching control on the switching elements.

Abstract: A power conversion device converts three-phase AC power into DC power by two-arm PWM modulation control and includes a main circuit that is constituted by a plurality of switching elements that are bridge-connected therein; a voltage-command generation unit that generates a voltage command value for the main circuit; a current detection unit that detects at least one of output currents of the main circuit; a power-factor calculation unit that calculates a power factor on the basis of the output current and the voltage command value; a carrier-signal generation unit that generates a carrier signal of a frequency corresponding to the power factor; and a PWM-signal generation unit 6 that compares the voltage command value and the carrier signal to generate a PWM signal that executes switching control on the switching elements.

Abstract: A power conversion device converts three-phase AC power into DC power by two-arm PWM modulation control and includes a main circuit that is constituted by a plurality of switching elements that are bridge-connected therein; a voltage-command generation unit that generates a voltage command value for the main circuit; a current detection unit that detects at least one of output currents of the main circuit; a power-factor calculation unit that calculates a power factor on the basis of the output current and the voltage command value; a carrier-signal generation unit that generates a carrier signal of a frequency corresponding to the power factor; and a PWM-signal generation unit 6 that compares the voltage command value and the carrier signal to generate a PWM signal that executes switching control on the switching elements.

Abstract: A power conversion device converts three-phase AC power into DC power by two-arm PWM modulation control and includes a main circuit that is constituted by a plurality of switching elements that are bridge-connected therein; a voltage-command generation unit that generates a voltage command value for the main circuit; a current detection unit that detects at least one of output currents of the main circuit; a power-factor calculation unit that calculates a power factor on the basis of the output current and the voltage command value; a carrier-signal generation unit that generates a carrier signal of a frequency corresponding to the power factor; and a PWM-signal generation unit 6 that compares the voltage command value and the carrier signal to generate a PWM signal that executes switching control on the switching elements.

Abstract: A power converting apparatus is connected to a second power converting apparatus via a power supply line and an earth line, and includes: a carrier-signal generating unit configured to switch a frequency to a frequency selected from a plurality of candidate frequencies or a candidate frequency range according to information to be transmitted to the second power converting apparatus and generate a carrier signal having the switched frequency; a PWM-signal generating unit configured to generate a PWM signal using the generated carrier signal; and a switching element for controlling a control target, which makes switching according to the PWM signal to thereby perform an operation for power conversion and transmits a voltage-to-earth signal corresponding to the information to be transmitted, to the second power converting apparatus via the power supply line and the earth line.

Abstract: A power conversion apparatus according to the present invention includes a plurality of PWM converters (2 and 3) that are connected in parallel and convert power supplied from a common three-phase AC power supply (1) into DC power and, and supply the DC power to a common load (6) and a plurality of short-circuit prevention reactors (10 and 11) that are connected to an output side of a part or all of the PWM converters (2 and 3) and, when a deviation occurs in operation timings of switching elements of a same phase in the respective PWM converters, reduce a short-circuit current flowing between PWM converters with mismatched operation timings.

Abstract: A power converting apparatus is connected to a second power converting apparatus via a power supply line and an earth line, and includes: a carrier-signal generating unit configured to switch a frequency to a frequency selected from a plurality of candidate frequencies or a candidate frequency range according to information to be transmitted to the second power converting apparatus and generate a carrier signal having the switched frequency; a PWM-signal generating unit configured to generate a PWM signal using the generated carrier signal; and a switching element for controlling a control target, which makes switching according to the PWM signal to thereby perform an operation for power conversion and transmits a voltage-to-earth signal corresponding to the information to be transmitted, to the second power converting apparatus via the power supply line and the earth line.

Abstract: It is a technological object of the present invention to provide an information processing device, a card and a card system that have a high level of security. In order to achieve the object described above, the present invention provides a data processing apparatus comprising at least a first information processing device and a second information processing device connected to the first information processing device by a signal line, the data processing apparatus having a means for changing power consumption on the signal line during transmission of a signal through the signal line in accordance with an actual state of the power consumption that would be observed when the means were not used.