Takayuki Kobayashi
Takayuki Kobayashi, Yokosuka-Shi JP
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20100220376 | OPTICAL MODULATION CIRCUIT AND OPTICAL TRANSMISSION SYSTEM - An optical modulator and an optical transmission system convert continuous light of a multiple wavelength light source, which generates the continuous light with a fixed and complete phase but different frequencies, to a modulator driving signal so as to generate a light subcarrier with each frequency at the center and modulate the continuous light to the light subcarrier by using the modulator driving signal. In the case where an optical modulation is carried out by an optical IQ-modulator, transmitting data, for example, is converted to two parallel data A(t) and B(t), an I phase signal, in which the data A(t)+B(t) are modulated with a clock signal with a frequency ω, and a Q phase signal, in which the data A(t)−B(t) are modulated with a clock signal with a π/2 phase shifted, are generated, and the I phase signal and the Q phase signal are applied to electrodes of the optical IQ-modulator, respectively. | 09-02-2010 |
20110002689 | OPTICAL OFDM RECEIVER, OPTICAL TRANSMISSION SYSTEM, SUBCARRIER SEPARATION CIRCUIT, AND SUBCARRIER SEPARATION METHOD - A high-performance optical OFDM receiver is realized. A subcarrier separation circuit receives an optical OFDM signal consisting of two subcarriers A and B and separates a subcarrier component, signal light and first local oscillator light are input to the subcarrier separation circuit, the subcarrier separation circuit converts the signal light and the first local oscillator into a baseband electrical signal, the subcarrier separation circuit converts the baseband electrical signal into a digital signal, the subcarrier separation circuit shifts the frequency of the converted digital signal so that a center frequency of the subcarrier A becomes zero, and the subcarrier separation circuit adds a frequency shifted signal to a signal obtained by delaying the frequency shifted signal by ½ of a symbol time to separate a component of the subcarrier A. | 01-06-2011 |
20110129041 | RECEIVER DEVICE, COMMUNICATION SYSTEM AND RECEIVING METHOD - A receiver device receives a signal inputted to one or a plurality of ports as a plurality of received signals, and includes: a phase offset estimating unit that, on the basis of a unique word of each signal block contained in said received signal, estimates the phase offset, and a phase offset compensating unit that, on the basis of a phase offset estimated by said phase offset estimating unit, compensates the phase offset; the receiver device uses a known signal component (unique word) contained in a frequency-domain equalized signal to compensate the phase offset, whereby it compensates complex phase offset fluctuation, and estimates the phase offset of a signal obtained at each port. | 06-02-2011 |
20120070159 | SIGNAL GENERATING CIRCUIT, OPTICAL SIGNAL TRANSMITTING APPARATUS, SIGNAL RECEIVING CIRCUIT, METHOD FOR ESTABLISHING OPTICAL SIGNAL SYNCHRONIZATION, AND OPTICAL SIGNAL SYNCHRONIZATION SYSTEM - To enable signal position detection, frequency offset compensation, clock offset compensation, and chromatic dispersion amount estimation in a communication system based on coherent detection using an optical signal, even on a signal having a great offset in an arrival time depending on a frequency due to chromatic dispersion. An optical signal transmitting apparatus generates specific frequency band signals having power concentrated on two or more specific frequencies and transmits a signal including the specific frequency band signals. An optical signal receiving apparatus converts a received signal into a digital signal, detects positions of the specific frequency band signals from the converted digital signal, estimates frequency positions of the detected specific frequency band signals, and detects a frequency offset between an optical signal receiving apparatus and an optical signal transmitting apparatus. Moreover, the optical signal receiving apparatus detects a clock offset between the optical signal receiving apparatus and the optical signal transmitting apparatus from an interval between the estimated frequency positions of the specific frequency band signals. Furthermore, the optical signal receiving apparatus estimates temporal positions of the detected specific frequency band signals and detects a chromatic dispersion amount from a difference between the temporal positions of the specific frequency band signals corresponding to different frequencies. | 03-22-2012 |
20120099864 | CHROMATIC DISPERSION VALUE CALCULATING APPARATUS, OPTICAL SIGNAL RECEIVING APPARATUS, OPTICAL SIGNAL TRANSMITTING APPARATUS, AND CHROMATIC DISPERSION VALUE CALCULATION METHOD - In order to compensate for chromatic dispersion caused by optical fiber transmission in a communication system with coherent detection using optical signals, specific frequency band signals are used to enable estimation of a chromatic dispersion value. The chromatic dispersion value calculating apparatus is provided with: a signal distributing circuit which distributes, into a plurality of signal sequences, an electrical digital signal converted from received optical signals of an optical signal transmitted by an optical signal transmitting apparatus, in which a known signal with concentrated frequency components of a plurality of specific frequencies is appended to a signal generated from a transmission data sequence; a plurality of frequency band pass filter circuits, each of which separating only each of a plurality of specific frequency components in which the known signal is included from each of the signal sequences distributed by the signal distributing circuit, and passing each of the specific frequency components therethrough; a plurality of power calculating circuits which are provided so as to correspond respectively to the plurality of frequency band pass filter circuits and which calculate power values of signals output from the corresponding frequency band pass filter circuits; a delay time calculating circuit which detects times at which power has the maximum value or times at which the power exceeds a predetermined threshold value, respectively from signal sequences of the power values output from the plurality of power calculating circuits, and which compares the detected times; and a chromatic dispersion value calculating circuit which calculates a chromatic dispersion value based on a comparison result of the times by the delay time calculating circuit. | 04-26-2012 |
20120106618 | METHOD FOR RECEIVING FREQUENCY DOMAIN MULTIPLEXED SIGNAL AND DEVICE FOR RECEIVING FREQUENCY DOMAIN MULTIPLEXED SIGNAL - A frequency domain multiplexed signal receiving method which decodes received signals that are multiplexed in a frequency domain, includes: a digital signal acquisition step of acquiring digital signals from the received signals that are multiplexed in the frequency domain; an offset discrete Fourier transform step of applying an offset discrete Fourier transform to odd discrete point numbers based on the acquired digital signals; and a decode step of decoding frequency domain digital signals in the frequency domain obtained by the offset discrete Fourier transform, and that are the frequency domain digital signals of one or more frequency channels. | 05-03-2012 |
20120315043 | TRANSMISSION METHOD, RECEPTION METHOD, TRANSMITTER APPARATUS, AND RECEIVER DEVICE - A polarization state of a transmission signal can be changed at a high speed based on a symbol-rate By switching a first switch, a second switch, and a third switch with time, one of an X-polarized wave_I-signal as a Y-polarized wave_I-signal, a signal caused by performing logical inversion for an X-polarized wave_I-signal, an X-polarized wave_Q-signal and a signal caused by logical inversion for an X-polarized wave_Q-signal is input to a second modulator. Further, by switching the first switch, the second switch and the third switch with time, the second modulator is input one of the X-polarized wave_I-signal as the Y-polarized wave_Q-signal, the X-polarized wave_I-signal, the signal caused by performing logical inversion for the X-polarized wave_I-signal, the X-polarized wave_Q-signal and the signal caused by performing logical inversion for the X-polarized wave_Q-signal. Thereby, a polarization state of a transmission signal can be changed at high speed based on a symbol-rate speed. | 12-13-2012 |
20130028595 | FREQUENCY OFFSET ESTIMATING METHOD AND FREQUENCY OFFSET ESTIMATING APPARATUS - When a circuit that calculates a frequency offset using a shape of a frequency spectrum is implemented by hardware, the circuit size can be reduced. A frequency offset estimating method for estimating the difference between a carrier frequency of a reception signal and the frequency of an output signal of a local oscillator includes performing a discrete Fourier transform on a reception signal previously sampled at a predetermined sampling frequency and outputting a frequency spectrum with a plurality of frequency components, calculating an average power of the frequency spectrum, calculating a threshold by adding a predetermined value to the average power or power obtained by multiplying the average power by a constant, performing 1-bit quantization on powers of the frequency components of the frequency spectrum based on the threshold, and calculating a centroid frequency by multiplying frequencies of the frequency components by powers of 1-bit quantized frequency components, calculating the sum of multiplied products, and dividing the sum of the products by the sum of the powers of the 1-bit quantized frequency components of the frequency spectrum. | 01-31-2013 |
20130070874 | FREQUENCY OFFSET ESTIMATION APPARATUS, FREQUENCY OFFSET ESTIMATION METHOD, AND RECEPTION METHOD - Provided is a frequency offset estimation apparatus that appropriately estimates and compensates for a frequency offset of a received signal when estimating the frequency offset which is the difference between a carrier frequency of the received signal and the frequency of an output signal of a local oscillator. The frequency offset estimation apparatus converts the received signal sampled in advance with a predetermined sampling frequency into a frequency spectrum having N frequency components, limits a frequency band of negative frequency components from 1 to N/2 of the frequency spectrum and a frequency band of positive frequency components from N/2+1 to N of the frequency spectrum, calculates the sum of the squares of the positive frequency components of the frequency spectrum that have been subjected to frequency band limitation and the sum of the squares of the negative frequency components of the frequency spectrum that have been subjected to frequency band limitation to calculate power of the positive frequency components and power of the negative frequency components, and cyclically shifts all frequency components of the frequency spectrum in a frequency domain until the absolute value of a power difference between the power of the positive frequency components and the power of the negative frequency components is less than or equal to a predetermined threshold value, and estimates the frequency offset based on a shift amount until the absolute value is less than or equal to the threshold value. | 03-21-2013 |
20130308960 | DIGITAL SIGNAL PROCESSING APPARATUS - A parameter of an adaptive filter is optimized so that inter-symbol interference having an amount corresponding to an inserted fixed filter remains. A digital signal processing apparatus which is included in an optical signal receiver and processes a digital signal converted from an optical signal is provided with: a linear adaptive filter which applies a dynamically controllable linear transfer function to the digital signal; a maximum likelihood sequence decoder which applies a transfer function of a transmission-path model to a plurality of signal sequence candidates to generate a plurality of reference signals, and decodes a reception signal using maximum likelihood sequence estimation which evaluates the differences between an output signal of the linear adaptive filter and the reference signals to estimate the most likely transmission time sequence; a signal regenerator which generates a signal corresponding to decoded data from the maximum likelihood sequence decoder; a feedback distortion adding filter which adds distortion that is equivalent to the transmission-path model used in the maximum likelihood sequence decoder to an output signal of the signal regenerator; and an adaptive equalization filter control block which updates a tap coefficient of the linear adaptive filter in accordance with an LMS algorithm using the difference between a target signal that is an output signal of the feedback distortion adding filter and the digital signal as an error signal. | 11-21-2013 |
20130343749 | WAVELENGTH DISPERSION AMOUNT ESTIMATION METHOD, WAVELENGTH DISPERSION COMPENSATION CIRCUIT, AND RECEPTION DEVICE - A wavelength dispersion amount estimation method, a wavelength dispersion compensation circuit, and a receiving device which rapidly estimate and set a wavelength dispersion amount to compensate with high accuracy at the receiving device which compensates waveform distortion at an optical fiber transmission path. The wavelength dispersion compensation circuit includes an analog-digital converter which converts an optical analog waveform received from the optical fiber transmission path to a digital signal, a digital signal processor which compensates waveform distortion of the digital signal output from the analog-digital converter due to wavelength dispersion at the optical fiber transmission path with a dispersion compensation amount estimated with the wavelength dispersion amount estimation method, and a symbol clock extractor which extracts a symbol arrival timing clock of received data contained in the digital signal output from the analog-digital converter and outputs strength of the symbol arrival timing clock as the clock detection value. | 12-26-2013 |
20140016929 | METHOD FOR ESTIMATING AMOUNT OF WAVELENGTH DISPERSION, WAVELENGTH DISPERSION COMPENSATION CIRCUIT, AND RECEIVING DEVICE - A wavelength dispersion amount estimation method, a wavelength dispersion compensation circuit, and a receiving device which rapidly estimate and set a wavelength dispersion amount to compensate with high accuracy at the receiving device which compensates waveform distortion at an optical fiber transmission path. A wavelength dispersion compensation circuit includes an analog-digital converter which converts an optical analog waveform received from the optical fiber transmission path to a digital signal, a digital signal processor which compensates waveform distortion of the digital signal output from the analog-digital converter due to wavelength dispersion at the optical fiber transmission path with a dispersion compensation amount estimated with the wavelength dispersion amount estimation method, and a symbol clock extractor which extracts a symbol arrival timing clock of received data contained in the digital signal output from the analog-digital converter and outputs strength of the symbol arrival timing clock as the clock detection value. | 01-16-2014 |
20150078762 | SIGNAL GENERATING CIRCUIT, OPTICAL SIGNAL TRANSMITTING APPARATUS, SIGNAL RECEIVING CIRCUIT, METHOD FOR ESTABLISHING OPTICAL SIGNAL SYNCHRONIZATION, AND OPTICAL SIGNAL SYNCHRONIZATION SYSTEM - To enable signal position detection, frequency offset compensation, clock offset compensation, and chromatic dispersion amount estimation in a communication system based on coherent detection using an optical signal, even on a signal having a great offset in an arrival time depending on a frequency due to chromatic dispersion. An optical signal transmitting apparatus generates specific frequency band signals having power concentrated on two or more specific frequencies and transmits a signal including the specific frequency band signals. An optical signal receiving apparatus converts a received signal into a digital signal, detects positions of the specific frequency band signals from the converted digital signal, estimates frequency positions of the detected specific frequency band signals, and detects a frequency offset between an optical signal receiving apparatus and an optical signal transmitting apparatus. Moreover, the optical signal receiving apparatus detects a clock offset between the optical signal receiving apparatus and the optical signal transmitting apparatus from an interval between the estimated frequency positions of the specific frequency band signals. Furthermore, the optical signal receiving apparatus estimates temporal positions of the detected specific frequency band signals and detects a chromatic dispersion amount from a difference between the temporal positions of the specific frequency band signals corresponding to different frequencies. | 03-19-2015 |
20150078765 | SIGNAL GENERATING CIRCUIT, OPTICAL SIGNAL TRANSMITTING APPARATUS, SIGNAL RECEIVING CIRCUIT, METHOD FOR ESTABLISHING OPTICAL SIGNAL SYNCHRONIZATION, AND OPTICAL SIGNAL SYNCHRONIZATION SYSTEM - To enable signal position detection, frequency offset compensation, clock offset compensation, and chromatic dispersion amount estimation in a communication system based on coherent detection using an optical signal, even on a signal having a great offset in an arrival time depending on a frequency due to chromatic dispersion. An optical signal transmitting apparatus generates specific frequency band signals having power concentrated on two or more specific frequencies and transmits a signal including the specific frequency band signals. An optical signal receiving apparatus converts a received signal into a digital signal, detects positions of the specific frequency band signals from the converted digital signal, estimates frequency positions of the detected specific frequency band signals, and detects a frequency offset between an optical signal receiving apparatus and an optical signal transmitting apparatus. Moreover, the optical signal receiving apparatus detects a clock offset between the optical signal receiving apparatus and the optical signal transmitting apparatus from an interval between the estimated frequency positions of the specific frequency band signals. Furthermore, the optical signal receiving apparatus estimates temporal positions of the detected specific frequency band signals and detects a chromatic dispersion amount from a difference between the temporal positions of the specific frequency band signals corresponding to different frequencies. | 03-19-2015 |
Takayuki Kobayashi, Aichi JP
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20100260608 | PROPELLER FAN - Provided is a propeller fan that can prevent deformation of the propeller fan while maintaining the basic performance thereof, such as the air blowing performance, efficiency, and noise performance. In a plastic propeller fan including a hub and a plurality of blades integrally molded in a radial pattern on the outer circumference of the hub, assuming that the radial size of each blade from the base to the outer peripheral edge is 100, a ring member that joins the plurality of blades together is provided at a dimension position of 5 to 45 from the outer peripheral edge. | 10-14-2010 |
20100272573 | RESIN FAN - There is provided a resin fan capable of enhancing the mechanical strength in a weld part in view of the direction of reinforcing fiber. On the outer peripheral surface | 10-28-2010 |
20130295811 | CARBON-FIBER-PRECURSOR FIBER BUNDLE, CARBON FIBER BUNDLE, AND USES THEREOF - Provided are: a carbon fiber bundle which has a large value of single-fiber fineness and excellent productivity and which, despite this, contains few interlaced single fibers therein and has excellent spreadability; and precursor fibers which are suitable for use in producing the carbon fiber bundle. The precursor fibers are a carbon-fiber-precursor acrylic fiber bundle which comprises a polyacrylonitrile copolymer comprising 95-99 mol % acrylonitrile units and 1-5 mol % hydroxyalkyl (meth)acrylate units and which has a single-fiber fineness of 1.5-5.0 dtex. In the acrylic fiber bundle, the cross-section of each single fiber which is perpendicular to the fiber axis has a shape that has a roundness of 0.9 or less. The roundness is a value determined using equation (1) where S and L are the cross-sectional area and the circumferential length, respectively, of a single fiber which are obtained by examining, with an SEM, the cross-section of the single fiber which is perpendicular to the fiber axis and analyzing the obtained image. | 11-07-2013 |
Takayuki Kobayashi, Aichi-Ken JP
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20100158713 | FAN MOTOR - The present invention provides a fan motor capable of achieving both an improvement in a self cooling function of the fan motor and a reduction in fan noise, and of preventing the occurrence of heat damage, problems, and the like caused by external radiation heat and by self-heating, fan noise, and deterioration in fan performance and in fan efficiency. The fan motor ( | 06-24-2010 |
Takayuki Kobayashi, Miyazaki JP
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20090309864 | PLASMA DISPLAY DEVICE AND PLASMA DISPLAY PANEL DRIVE METHOD - A first driving circuit alternately reverses polarities of voltages applied to a first and a second electrode in order to cause sustain discharge between the first and second electrodes. A second driving circuit applies a pulse to a fourth electrode in synchronization with a timing when the Polarities of the voltages to the first and second electrodes are reversed. Further, during the sustain discharge, the second driving circuit keeps a voltage of the fourth electrode after the application of the pulse, at an offset voltage deviated by a Predetermined value from an initial voltage that the fourth electrode has before the generation of the pulse, and thereafter returns the voltage of the fourth electrode to the initial voltage. For example, the offset voltage is set to a value between a high-level voltage and a low-level voltage applied to the first and second electrodes. Consequently, luminescent efficiency can be improved. | 12-17-2009 |
Takayuki Kobayashi, Chiba JP
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20090022636 | High al-content steel sheet excellent in workability and method of production of same - The present invention provides a high Al-content steel sheet having an excellent workability and a method of production of the same at a low cost by mass production, a high Al-content metal foil and a method of production of the same, and a metal substrate using a high Al-content metal foil, that is, a high Al-content steel sheet having an Al content of 6.5 mass % to 10 mass %, the high Al-content steel sheet characterized by having one or both of a {222} plane integration of an α-Fe crystal with respect to the surface of the steel sheet of 60% to 95% or a {200} plane integration of 0.01% to 15% and a method of production of the same, a high Al-content metal foil and a method of production of the same, and a metal substrate using a high Al-content metal foil. | 01-22-2009 |
20090304545 | LEAD-FREE SOLDER ALLOY, SOLDER BALL AND ELECTRONIC MEMBER, AND LEAD-FREE SOLDER ALLOY, SOLDER BALL AND ELECTRONIC MEMBER FOR AUTOMOBILE-MOUNTED ELECTRONIC MEMBER - A lead-free solder alloy exhibiting good performance in impact resistance and vibration resistance. Also provided are a solder ball using such a lead-free solder alloy, and an electronic member having a solder bump using such a lead-free alloy. Specifically, the lead-free solder alloy consists of 1.0 to 2.0% by mass of Ag, 0.3 to 1.0% by mass of Cu, 0.005 to 0.1% by mass of Ni and the balance including Sn and unavoidable impurities. In an Sn—Ag—Cu based solder joint portion on a Cu electrode, a Cu | 12-10-2009 |
Takayuki Kobayashi, Kasukabe-Shi JP
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20090274748 | Nonaqueous pressure-sensitive adhesive for medicinal tape preparation for percutaneous absorption, medicinal tape preparation for percutaneous absorption, and process for producing the same - A nonaqueous pressure-sensitive adhesive for a medicinal tape preparation for percutaneous absorption comprising (a) a support, (b) a pressure-sensitive adhesive layer containing a drug and a nonaqueous pressure-sensitive adhesive and (c) a release film laminated in that order, and a medicinal tape preparation for percutaneous absorption comprising the adhesive. The nonaqueous pressure-sensitive adhesive may comprise a copolymer obtained by copolymerization of a (meth)acrylic monomer having an acetoacetyl group in the molecule and one or more monomers from among other (meth)acrylic monomers without acetoacetyl groups and copolymerizable vinyl monomers, in a nonaqueous solvent. Suitable (meth)acrylic monomers having an acetoacetyl group in the molecule are acetoacetoxyalkyl methacrylates, and especially 2-acetoacetoxyethyl methacrylate. The copolymer nonaqueous pressure-sensitive adhesive of the invention, comprising a (meth)acrylic monomer having an acetoacetyl group as a constituent monomer, is capable of containing large amounts of lipophilic oily substances in the pressure-sensitive adhesive layer, and during heat drying, the acetoacetyl groups undergo self-crosslinking to form a network structure as the solvent evaporates off, so that large amounts of oily substances such as the plasticizer can be included in the network structure. The pressure-sensitive adhesive of the invention uses no polyamine derivatives, isocyanate compounds, polyvalent metal chelate compounds, etc., as crosslinking agents, and therefore toxicity is not a concern and skin is not irritated. A medicinal tape preparation for percutaneous absorption of the invention has superior adhesive strength and cohesive strength, and is highly safe with low skin irritation. It also has excellent drug release and percutaneous absorption properties. | 11-05-2009 |
Takayuki Kobayashi, Shizuoka JP
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20090269613 | HIGH STRENGTH ALUMINUM ALLOY SHEET AND METHOD OF PRODUCTION OF SAME - High strength aluminum alloy sheet having superior surface roughening and formability suitable for home electrical appliances and automobile outer panels and other structural materials and a method of production of the same are provided. High strength aluminum alloy sheet having a chemical composition containing Mg: 2.0 to 3.3 mass %, Mn: 0.1 to 0.5 mass %, and Fe: 0.2 to 1.0 mass %, having a balance of unavoidable impurities and Al, and having an Si among the unavoidable impurities of less than 0.20 mass % and having an average circle equivalent diameter of intermetallic compounds of 1 μm or less, having an area ratio of intermetallic compounds of 1.2% or more, having an average diameter of recrystallized grains of 10 μm or less, and having a tensile strength of 220 MPa or more. This is obtained by pouring an aluminum alloy melt having the above chemical composition in a twin belt caster, continuously casting a thin slab of a thickness of 6 to 15 mm at a cooling rate at a position of ¼ the slab thickness of 50 to 200° C./sec and winding it up into a coil, then cold rolling it at a cold reduction of 60 to 98%, final annealing it by a continuous annealing furnace at a heating rate of 100° C./min or more, at a holding temperature of 400 to 520° C. for a holding time of within 5 minutes. | 10-29-2009 |
Takayuki Kobayashi, Fujisawa JP
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20090201276 | DRIVING METHOD OF A PLASMA DISPLAY DEVICE AND A PLASMA DISPLAY DEVICE - At an on-cell reset, a positive ramp wave of an ultimate voltage, which is larger than a maximum voltage of a sustain pulse, and smaller than an ultimate voltage of a positive ramp wave applied to a Y electrode at an all-cell reset, is applied to the Y electrode to make a weak discharge occur at a cell where it is non-lighting at a previous sub-field and a wall charge thereof is decreased due to an influence from an adjacent cell, thereby, it makes it possible to return a wall charge state to a normal state, to be capable of lighting a cell to be lighted securely based on a display data. | 08-13-2009 |
Takayuki Kobayashi, Tochigi JP
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20090077788 | Magnet cover caulking method of electric motor - In a magnet cover caulking method of an electric motor, the method achieves caulking and fixation by forming a taper-shaped outer peripheral portion, a diameter of which is reduced toward an outer side in an axial direction, in an outer periphery of a magnet holder, arranging an annular caulking jig in an outer periphery of a rotating shaft, pressing a taper-shaped forming portion a diameter of which is increased toward an outer side in an axial direction, provided in one end side of an inner periphery of the caulking jig to a straight end portion of a magnet cover installed to the outer periphery of the magnet and the magnet holder from the axial direction, and forming the end portion of the magnet cover according to the taper-shaped outer peripheral portion of the magnet holder. | 03-26-2009 |
20090167121 | POSITIONING MECHANISM OF RESOLVER AND ELECTRICALLY -DRIVEN POWER STEERING APPARATUS - In the power steering apparatus, of the present invention, bobbins and a bus ring holder are coupled and fixed to a stator so as to be positioned at constant circumferential positions with respect to the stator, and a resolver stator is held by a groove portion of a bus ring holder so as to be positioned at a constant circumferential position with respect to the stator. A resolver rotor is positioned at a constant circumferential position with respect to a rotor. | 07-02-2009 |
Takayuki Kobayashi, Kunitomi JP
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20090066610 | Plasma Display Apparatus - Provided is a plasma display apparatus capable of reducing power consumption by effectively using charges charged in a plasma display panel and achieving a high luminance by a reduction in reactive power. This plasma display apparatus includes: a plasma display panel in which X electrodes, Y electrodes, and Z electrodes are disposed on a front substrate and address electrodes are disposed on a rear substrate; and an X drive circuit, a Y drive circuit, a Z drive circuit and an address drive circuit for performing discharge light emission by applying a Z pulse between the Z electrode and the X electrode or between the Z electrode and the Y electrode and applying an X (Y) pulse between the X electrode and the Y electrode. The Z drive circuit includes a coil and switches using an LC resonance operation with the capacitance of the plasma display panel, and the Z pulse having a narrow pulse width can be generated by generating a Z pulse in the Z drive circuit. | 03-12-2009 |
20090153543 | Driving Method of Plasma Display Panel and Plasma Display Device - In a technique of a PDP having a four-electrode structure of (X, Y, Z, and A), the technique capable of preventing a delay of a discharge timing due to a voltage applied to the Z electrode is provided. In the four-electrode product structure of (X, Y, Z, and A) and a PDP in which rows are formed at both sides of a Y electrode, for a voltage waveform applied to each electrode (for example, X | 06-18-2009 |
20090160739 | Plasma Display panel and plasma display - A technology for the four-electrode type PDP for preventing the lowering of luminance depending on the display load ratio due to the voltage drop at electrode by mitigating concentration of discharge timing. On a front substrate of a PDP ( | 06-25-2009 |
Takayuki Kobayashi, Ibaraki JP
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20090104429 | RESIN COMPOSITION, SHEET-LIKE FORMED BODY, PREPREG, CURED BODY, LAMINATE, AND MULTILAYER LAMINATE - Provided is a resin composition, a prepreg, a cured body, a sheet-like formed body, a laminate, and a multilayered laminate using the resin composition, the resin composition including an epoxy resin and an inorganic filler. For example, when a second layer is formed onto the surface of a cured body, the cured body has improved adhesive property or adhesive property between the cured body and the second layer. A resin composition comprising an epoxy resin, a curing agent for the epoxy resin, a silica treated with an imidazole silane and having a mean particle diameter not more than 5 micrometers, the resin composition including the silica at a proportion of 0.1 to 80 parts by weight to a mixture consisting of the epoxy resin and the curing agent for the epoxy resin 100 parts by weight. | 04-23-2009 |
20110189432 | EPOXY RESIN COMPOSITION, PREPREG, CURED BODY, SHEET-LIKE MOLDED BODY, LAMINATE AND MULTILAYER LAMINATE - Provided is an epoxy resin composition capable of reducing the surface roughness of the surface of a roughening-treated cured body. | 08-04-2011 |
20130288041 | EPOXY RESIN COMPOSITION, PREPREG, CURED BODY, SHEET-LIKE MOLDED BODY, LAMINATE AND MULTILAYER LALMINATE - Provided is an epoxy resin composition capable of reducing the surface roughness of the surface of a roughening-treated cured body. | 10-31-2013 |
Takayuki Kobayashi, Fuji-Shi JP
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20090033083 | Interior Structure For Vehicle Near Instrument Panel And Column Cover - An interior structure for a vehicle includes a cover. The cover includes a pair of attachments and arranged above a column cover. One of the attachments is attached to an instrument panel and another of the attachments is attached to a column cover. Then, the cover screens a gap between the instrument panel and the column cover. The cover includes a flexible main element and a pair of retainers. The main element further includes a pair of attached areas and an intermediate area joining the attached areas. The retainers are fixed to the attached areas to compose the attachments, respectively. According to the interior structure, attaching workability of the cover and an appearance are improved. | 02-05-2009 |
Takayuki Kobayashi, Kanagawa JP
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20110164620 | BANDWIDTH VARIABLE COMMUNICATION APPARATUS AND BANDWIDTH VARIABLE COMMUNICATION METHOD - A bandwidth variable communication apparatus includes: a route exchange unit including a route exchange function for switching an output port of a stream signal of one or more wavelengths input from an input port based on both or a part of wavelength and time, and including a bandwidth change function for changing passable frequency bandwidth in a section from the input port to the output port through which the stream signal passes; and a control unit including a control information transmit-receive function for transmitting and receiving control information for both or a part of the route exchange function and the bandwidth change function of the route exchange unit, and including a control function for controlling the route exchange unit based on the control information. All or a part of the input ports and the output ports are connected to other communication apparatuses via transmission routes. | 07-07-2011 |
Takayuki Kobayashi, Saitama-Shi JP
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20110236440 | MEDICAL TAPE PREPARATION - A medical tape preparation which comprises a support and, superposed on one side thereof in the following order, a pressure-sensitive adhesive layer and a release liner. The pressure-sensitive adhesive layer can contain a large amount of an oleophilic oily matter. The tape preparation is excellent in adhesion, cohesiveness, and stability even when no crosslinking agent is used. The pressure-sensitive adhesive layer in the medical tape preparation comprises a blend of two tacky polymers, which are a tacky polymer (A) comprising a copolymer obtained from 2-acetoacetoxyethyl methacrylate and other vinyl monomer(s) as constituent ingredients and a tacky polymer (B) comprising a copolymer which is obtained from a C | 09-29-2011 |
20130138056 | NONAQUEOUS PRESSURE-SENSITIVE ADHESIVE FOR MEDICINAL TAPE PREPARATION FOR PERCUTANEOUS ABSORPTION, MEDICINAL TAPE PREPARATION FOR PERCUTANEOUS ABSORPTION, AND PROCESS FOR PRODUCING THE SAME - The present invention is directed to a nonaqueous pressure-sensitive adhesive that may be used in medicinal tape preparations for percutaneous absorption. The adhesive may comprise a copolymer obtained by copolymerization of a (meth)acrylic monomer having an acetoacetyl group in the molecule and one or more monomers from among other (meth)acrylic monomers without acetoacetyl groups and copolymerizable vinyl monomers, in a nonaqueous solvent. Suitable (meth)acrylic monomers having an acetoacetyl group in the molecule are acetoacetoxyalkyl methacrylates, and especially 2-acetoacetoxyethyl methacrylate. The pressure-sensitive adhesive of the invention uses no polyamine derivatives, isocyanate compounds, polyvalent metal chelate compounds, etc., as crosslinking agents, and therefore toxicity is not a concern and skin is not irritated. A medicinal tape preparation for percutaneous absorption of the invention has superior adhesive strength and cohesive strength, and is highly safe with low skin irritation. It also has excellent drug release and percutaneous absorption properties. | 05-30-2013 |
Takayuki Kobayashi, Tsukuba JP
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20130337229 | ROUGHED CURED MATERIAL AND LAMINATED - A roughened cured material allows reduction of surface roughness and increase in adhesive strength between a cured object and a metal layer. A roughened cured material is obtained by advancing curing of an epoxy resin material to obtain a preliminary-cured material and conducting roughening treatment on a surface of the preliminary-cured material. The epoxy resin material contains an epoxy resin, a curing agent, and a silica whose mean particle diameter is not smaller than 0.2 μm but not larger than 1.2 μm. When a roughening-treated surface of the roughened cured material is photographed with a scanning electron microscope, in a 5 μm×5 μm sized area of the roughening-treated surface in a photographed image, the number of particles of the silica that are exposed from the roughening-treated surface and whose exposed portions have a maximum length of 0.3 μM or longer in the image is not greater than 15. | 12-19-2013 |
Takayuki Kobayashi, Fujisawa-Shi JP
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20140102219 | Abnormality Diagnosing Method for Torque Detecting Device and Electric Power Steering Device - An abnormality diagnosing method is provided for a torque detecting device and an electric power steering device is provided using the torque detecting device. Immediately after the power supply is turned on and before steering auxiliary control is started, initial diagnosis is performed to determine that each monitoring block for monitoring an abnormality of a signal processing circuit constituting a torque detecting device operates normally. The initial diagnosis determines that a monitoring block is operating normally, by inputting a normal signal and an abnormal signal to the monitoring block alternately, and finding that the monitoring block carries out normal diagnosis when it receives the normal signal and that it carries out abnormal diagnosis when it receives the abnormal signal. Once all of the monitoring blocks are determined as normal, the steering auxiliary control based on a steering torque detected by the torque detecting device is started. | 04-17-2014 |
20140195117 | Torque Detecting Device and Electric Power Steering Device - There is provided a torque detecting device for providing a highly accurate torque signal, and an electric power steering device using the torque detecting device. A torque sensor is provided with a first coil pair and a second coil pair, which detect a relative displacement between an input shaft and an output shaft by corresponding the relative displacement to a change in impedance. Magnetization signal generating units supply exciting currents with different magnetization frequencies to the first coil pair and a second coil pair, respectively. The magnetization frequency difference is set to 3.5 kHz or higher. Moreover, low-pass filters for intercepting passage of a frequency equivalent to the magnetization frequency difference are deployed in signal processing circuits respectively. | 07-10-2014 |
Takayuki Kobayashi, Okazaki-Shi JP
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20140115973 | ELECTROPLATED WHEEL - An electroplated wheel comprises a metal base formed to a disc shape and rotationally driven about a rotational axis and a superabrasive grain layer formed to have numerous superabrasive grains fixed by plating on a belt section that extends in a predetermined width on an outer peripheral portion of the metal base. In the electroplated wheel, a plurality of masking portions having no superabrasive grains electrodeposited thereat are formed of gel adhesive fixed as dots to be larger than the superabrasive grains by a dispenser at intersection points of a plurality of concentric array circles imaginarily drawn concentrically of the rotational axis to divide the belt section at equal intervals and a plurality of width-direction array lines imaginarily drawn from one end toward the other end of the belt section to divide the belt section at equal intervals in a circumferential direction. | 05-01-2014 |
Takayuki Kobayashi, Toyohashi-Shi JP
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20150044470 | CARBON FIBER THERMOPLASTIC RESIN PREPREG, CARBON FIBER COMPOSITE MATERIAL AND PRODUCING METHOD - Provided are a carbon fibre thermoplastic resin prepreg which is a carbon fibre prepreg obtained by impregnating a PAN-based carbon fibre in which the average fibre fineness of a single fibre is 1.0 dtex to 2.4 dtex with a thermoplastic resin, wherein the thermoplastic resin satisfies 20≦(FM/FS)≦40 (where FM: flexural modulus (MPa) of a resin sheet comprising only the thermoplastic resin, and FS: flexural strength (MPa) of the resin sheet), a method for manufacturing the same, and a carbon fibre composite material employing the carbon fibre prepreg. | 02-12-2015 |
Takayuki Kobayashi, Fukaya-Shi JP
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20150189818 | TRIFOLIUM PLANT NAMED 'TFLRG05-0' - A new and distinct | 07-02-2015 |
20150189819 | Trifolium plant named 'TFLRS03-0' - A new and distinct | 07-02-2015 |
20150189820 | Trifolium plant name 'TFLRE04-0' - A new and distinct | 07-02-2015 |
20150189821 | Trifolium plant named 'TFLGG01-0' - A new and distinct | 07-02-2015 |
Takayuki Kobayashi, Kyoto JP
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20150219352 | HOUSEHOLD ELECTRICAL APPLIANCE AND HOUSEHOLD ELECTRICAL SYSTEM - A household electric appliance and a household electric system are provided which are capable of quickly responding to the electric power demand in which the peak cut of the power consumption is requested. The household electric appliance comprises: a receiving unit that receives a request for a peak cut of power consumption at a predetermined rate from a remote controller and a mobile terminal; a drive unit that drives a power-consuming object to be driven; and a control unit that controls an action of the drive unit. The control unit, in the case of reception of the peak cut request from the remote controller or the mobile terminal, controls the action of the drive unit so as to cut a maximum value of the power consumption within the appliance based on the requested rate. | 08-06-2015 |
Takayuki Kobayashi, Yokohama-Shi JP
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20150229023 | ANTENNA UNIT, RADAR DEVICE, AND COMPOSITE SENSOR DEVICE - A DBF antenna unit including one or more transmitting antennas and a plurality of receiving antennas arranged at a predetermined interval in a horizontal scanning direction. Each of the transmitting antennas and the receiving antennas includes a waveguide provided with a corner bend and a horn expanding in a pyramid-like shape from one end of the waveguide. The other ends of the waveguides of all the transmitting antennas and the receiving antennas are placed on the same plane. | 08-13-2015 |