63results about How to "Suppress peak" patented technology

A prediction correcting guidance method of a deep space exploration returning process comprises the steps that (1) a heeling angle section used for deep space exploration returning process track prediction is determined; (2) the amplitude value | sigma 0 | of the heeling angle of a current point is computed in an iterative mode; (3) a salutatory reentry flight track of a returning device is divided into an initial reentry stage, a primary reentry descending stage, a primary reentry ascending stage, a Kepler stage and a final reentry stage, a final guidance rule of the returning device is determined, and the final guidance rule is that when the returning device is in the initial reentry stage or the primary reentry descending stage or the primary reentry ascending stage or the final reentry stage, the amplitude value | sigma 0 | determined in the step (2) of the heeling angle sigma 0 of the current point is used for guidance; and when the returning device is in the Kepler stage, | sigma 0 | = 180 degrees is used for guidance, and accordingly prediction correcting guidance of the deep space exploration returning process is completed. The guidance rule is designed at the Kepler stage of the track for achieving overload restrain on the deep space exploration returning process, and safe and accurate landing of the returning device is guaranteed.

A stator has multi-phase stator coils that are wound around a stator core by concentrated winding. A rotor has rotor coils that are wound at multiple portions of a rotor core in the circumferential direction and diodes that serve as rectifier unit that is connected to the rotor coils and that varies the magnetic characteristics of the respective rotor coils alternately in the circumferential direction. A rotary electric machine driving system includes a decreasing pulse superimposing unit that superimposes decreasing pulse current for a pulse-shaped decrease on a q-axis current command for passing currents through the stator coils.

A transmission apparatus capable of improving overall throughput of a system by suppressing peaks using some frequencies in a communication band. In this apparatus, modulation section (102) adaptively modulates transmission data. Combination section (103) combines the waveform of the transmission data and the waveform of an inverse replica and suppresses peaks equal to or higher than a threshold. When there are peaks equal to or higher than a threshold, inverse replica generation section (112) extracts the waveform of a peak equal to or higher than the threshold and generates an inverse replica which is the waveform having the inverse characteristic of the extracted waveform. Where MCS is set for each subcarrier, sub-band selection section (114) selects the frequency of a subcarrier having large margin in reception quality and outputs the inverse replica within the range of the selected frequency to combination section (103).

Depth of a termination p base region provided in a termination portion of an active region close to an edge termination structure portion is more than depth of a p-type base region provided inside the termination p base region. An n-type high-concentration region is provided from one main surface of the semiconductor substrate in the entire surface layer of one surface of a semiconductor substrate within a depth of 20 μm or less below the bottom of the termination p base region. Ratio of the impurity concentration n1 of the n-type high-concentration region (1c) to the impurity concentration n2 of an n− drift region satisfies 1.0<n1 / n2≦5.0. Reverse leakage current when operation temperature of an element is high can be reduced and trade-off between on-state voltage and switching loss can be improved. Rising peak voltage of collector voltage when a semiconductor device is off is reduced.

A transmitter that effectively suppresses the peak level of transmit signals is equipped with peak reduction signal generating means that generates a peak reduction signal having a level based on a transmit signal level threshold for determining a peak of the transmit signal and on a transmit signal peak level and having a phase based on the phase of the transmit signal, peak reduction signal processing means that subjects the peak reduction signal to band restriction and orthogonal modulation, and transmit signal level suppressing means that subtracts the peak reduction signal subjected to band restriction and orthogonal modulation from the transmit signal.

An optical transmission module of the invention uses a semiconductor chip forming an optical modulator integrated laser on a semi-insulating semiconductor board. An input transfer line and an anode electrode of an optical modulator element are connected by a first bonding wire. The anode electrode of the optical modulator element and one of the ends of a terminal resistor element are connected by a second bonding wire. A cathode electrode of the optical modulator element and the other end of the terminal resistor element are connected by a third bonding wire. The cathode electrode of the optical modulator element and a ground electrode are connected by a fourth bonding wire. A joint portion between the first bonding wire and the input transfer line is arranged on an opposite side to a joint portion between the fourth bonding wire and the ground electrode while interposing the semiconductor chip between them.

When an output voltage of a fuel cell is lowered to carry out a catalyst activation process so as to activate a catalyst during an intermittent operation of the fuel cell, if generated power P1 exceeds allowed battery charge power, while generated power P2 does not exceed the allowed battery charge power, then low speed corresponding to the generated power P2 is selected and the output voltage of the fuel cell is decreased toward a target voltage on the basis of the low speed, which has been selected, thereby restraining sudden generation of surplus power caused by a reduction in the output voltage of the fuel cell. By the control described above, a voltage reduction speed of a fuel cell is determined according to a receiving capability of an object which receives surplus power generated by the fuel cell during the catalyst activation process of the fuel cell.

The present invention is directed to largely reduce peak current at the time of operation of a boosting circuit provided for an EEPROM. In the erase / write operation, first, a low-frequency clock signal as a selection clock signal is input by a low-frequency clock control signal to a charge pump. After lapse of a certain period (about ⅓ of fall time), a high-frequency clock signal having a frequency higher than that of the low-frequency clock signal is output by a high-frequency clock control signal and is input as the selection clock signal to the charge pump to boost a voltage to a predetermined voltage level. In such a manner, while suppressing the peak of consumption current, the fall time of the boosted voltage can be shortened.

A transmission apparatus capable of improving overall throughput of a system by suppressing peaks using some frequencies in a communication band. In this apparatus, modulation section (102) adaptively modulates transmission data. Combination section (103) combines the waveform of the transmission data and an inverse replica and suppresses peaks equal to or higher than a threshold. When there are peaks equal to or higher than a threshold, inverse replica generation section (112) extracts the waveform of a peak equal to or higher than the threshold and generates an inverse replica which is the waveform having the inverse characteristic of the extracted waveform. Sub-band selection section (114) selects frequencies of subcarriers for which MCS having low transmission efficiency is selected and outputs the inverse replica within the range of the selected frequency to combination section (103).

The present invention provides a field-sequential color image display device suppressing color breakup and an increase in power consumption. The liquid crystal display device displays a color image by a field-sequential system in which each frame period includes four field periods corresponding to four colors, white, blue, green, and red, and the liquid crystal display device includes a light source portion which includes blue, green, and red LEDs, and a light source driver circuit. The light source driver circuit generates blue, green, and red light source control signals CswB, CswG, and CswR, and drives the light source portion on the basis of these signals. At this time, the light source driver circuit generates the light source control signals CswB, CswG, and CswR such that the blue, green, and red LEDs emit light sequentially during an ON period Ton within a white field period Tw, and respective emission periods for the colors occur symmetrically with respect to the axis of symmetry at the midpoint of the ON period Ton in the direction of time.

A pneumatic tire having a main groove (1) extending in a tread surface, in the circumferential direction, of the tire. Projections (10) having different heights are arranged on the bottom surface of the main groove (1) such that valleys (11) depressed inward in the radial direction of the tire and ridges (12) projecting outward in the radial direction of the tire are alternated with one another in the circumferential direction of the tire with outer peripheral surfaces (10a) of the projections (10) inclined.

Mass portions of torsional dampers are annular surrounding corresponding elastic portions. The mass portion of the torsional damper has a first inclined face formed such that the elastic portion deforms in a sheared manner as the mass portion rotates in a rotational direction with respect to a companion flange and the elastic portion partially deforms in a compressed manner as the mass portion rotates in a direction other than the rotational direction. The mass portion of the torsional damper has second inclined faces formed such that the elastic portion deforms in a sheared manner as the mass portion rotates in the direction of the rotational axis of the companion flange and the elastic portion partially deforms in a compressed manner as the mass portion rotates in a direction other than the direction of the rotational axis.

An A-NPC circuit is configured so that the intermediate potential of two connected IGBTs is clamped by a bidirectional switch including two RB-IGBTs. Control is applied to the turn-on di / dt of the IGBTs during the reverse recovery of the RB-IGBTs. The carrier life time of an n− drift region in each RB-IGBT constituting the bidirectional switch is comparatively longer than that in a typical NPT structure device. A low life time region is also provided in the interface between the n− drift region and a p collector region, and extends between the n− drift region and the p collector region. Thus, it is possible to provide a low-loss semiconductor device, a method for manufacturing the semiconductor device and a method for controlling the semiconductor device, in which the reverse recovery loss is reduced while the reverse recovery current peak and the jump voltage peak during reverse recovery are suppressed.

A stator has multi-phase stator coils that are wound around a stator core by concentrated winding. A rotor has rotor coils that are wound at multiple portions of a rotor core in the circumferential direction and diodes that serve as rectifier unit that is connected to the rotor coils and that varies the magnetic characteristics of the respective rotor coils alternately in the circumferential direction. A rotary electric machine driving system includes a decreasing / increasing pulse superimposing unit that superimposes decreasing pulse current for a pulse-shaped decrease on a q-axis current command for passing currents through the stator coils and that superimposes increasing pulse current for a pulse-shaped increase on a d-axis current command.

The present invention provides a converter (10, 12), and the converters (10, 12) are connected in parallel to each other. The converter (10) raises the voltage from an accumulator (B1) according to a signal (PWC1) from an ECU (30) and outputs it to a capacitor (C). The converter (12) raises the voltage from an accumulator (B2) according to a signal (PWC2) from the ECU (30) and outputs it to the capacitor (C). The ECU (30) generates signals (PWC1, PWC2) by using carrier signals which have the same frequency and asynchronized phases and outputs the generated signals (PWC1, PWC2) to the converters (10, 12), respectively.

A motor driving apparatus having a converter, which receives AC voltage and converts it to DC power, and an inverter, which receives the DC power and converts it to AC power, includes a charge / discharge control circuit and a capacitor connected in parallel to a link section between the converter and the inverter, and energy stored in the capacitor C8 is charged and discharged at arbitrary timing by the charge / discharge control circuit. The invention thus provides a motor driving apparatus that supplies energy to a motor so that the peak of the input current from a power supply to the motor can also be suppressed when particularly large energy is needed during the second half period of motor acceleration.

A rotary machine includes a rotary shaft having two driving reactive force receiving parts that are displaced in an axial direction and are applied with diametrical reactive forces having different rotation phases from driving targets as normal loads; and bearings that rotatably support the rotary shaft wherein the rotary shaft is rotated at a state where the rotary shaft is supported by the bearings to drive the driving targets via the driving reactive force receiving parts, wherein the bearings are respectively provided at both axial sides of one of the two driving reactive force receiving parts, which receives a higher normal load, and wherein a leading end side of the rotary shaft more than the other of the two driving reactive force receiving part, which receive a lower normal load lower than the higher normal load, is configured as a free end.

A peak suppression method detects a peak value exceeding a threshold value of a transmitting signal, forms a peak value prediction signal which is limited to a noise cancelling frequency band of a receiving end, based on the detected peak value of the transmitting signal, and subtracts the peak value prediction signal from the transmitting signal.

A loudspeaker device comprising a power amplifier (13) to which an input signal is delivered via a subtracter (6), a speaker unit (1) for reproducing output signals delivered from the power amplifier (13), an acoustic pipe (2) coupled in front of the speaker unit for guiding the sound waves, a microphone (4) for detecting an acoustic outputs radiated from the speaker unit, a microphone amplifier (5) for amplifying an acoustic output signals detected by the microphone, and a negative feedback circuit. Output signals of the microphone amplifier are delivered to the subtracter, at the same time the same output signal is connected to a high-pass filter (7) to be delivered to the subtracter. Thus the negative feedback circuit is formed to suppress peaks and dips for providing a flattened sound pressure frequency characteristic.

A method for forming a metal back-attached phosphor screen comprises the step of dissolving / removing or rendering highly resistant a specified area of a metal film formed on a phosphor screen by using a liquid that dissolves or oxidizes the metal film. After part of a metal film is removed or rendered highly resistant, an insulating or highly resistant inorganic material may be applied to the remaining ends thereof. Alternatively, an insulating or highly-resistant inorganic material may be added to a dissolving or oxidizing liquid to dissolve / remove or render highly resistant a metal film, and at the same time ends of the metal film are coated with the inorganic material. In this metal back-attached phosphor screen, electron emission elements and the phosphor screen are protected against destruction / deterioration by discharging.

The invention relates to a plasma processor capable of correctly detecting arc discharge generation; the plasma processor using plasma to process a substrate (G) comprises the following structures: a chamber (11) supplied with high frequency power so as to generate plasmas in an inner side; a first differentiating circuit (21) used for carrying out time differentiation for travelling wave voltage Vf of the high frequency power; a second differentiating circuit (23) used for carrying out time differentiation for reflected wave voltage Vr of the high frequency power; a comparator (22) calculating dVr / dt-dVf / dt, when the calculated dVr / dt-dVf / dt exceeds the arc discharge detection value, the arc discharge is determined to happen in the chamber (11), so a signal is sent; and a diode, when the dVf / dt is a negative value, the dVf / dt is set to be 0, so the dVr / dt-dVf / dt can be decreased.

An external resonator is provided with a fiber having a fiber Bragg grating for reflecting light of a specific wavelength and a ferrule which holds the above described fiber inside thereof. At least some phase gratings from among the respective phase gratings that form fiber Bragg grating are inclined relativ e to the optical axis of the fiber.

In a frequency-division multiplexing transmission apparatus for transmitting data in a frequency spectrum specific to a mobile station, a chip-dividing unit divides each symbol of a transmission-symbol sequence into chips; a first phase rotation unit performs pi / 2 phase rotation for the odd-numbered chips of the divided chips; a chip-repetition and rearrangement unit compresses the time domains of each chip of the chip sequence after phase rotation, then repeats the chips a specified number of times and rearranges the chips of the obtained repetitive-chip sequences so that they have the same arrangement as the original chip sequence; a second phase rotation unit performs phase rotation that changes at a speed specific to a mobile station for each chip of the rearranged repeti tive-chip sequence; and a transmission unit transmits said phase-rotated chips.