Patents by Inventor Yoshiaki Ito
Yoshiaki Ito has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20120104862Abstract: A photoelectric conversion device includes at least two photoelectric conversion elements which have voltage-current characteristics different from each other. Further, one of the photoelectric conversion elements has photoelectric conversion efficiency higher than that of the other photoelectric conversion element under the environment in which room light can be obtained. Furthermore, the other photoelectric conversion element has photoelectric conversion efficiency higher than the one of the photoelectric conversion elements under the environment in which sunlight can be obtained. Moreover, each of the voltage of electric power generated in the at least two photoelectric conversion elements is adjusted by one of at least two DC-DC converters corresponding the photoelectric conversion element. In addition, part of the electric power generated in the one of the photoelectric conversion elements is used as drive electric power of the at least two DC-DC converter.Type: ApplicationFiled: October 26, 2011Publication date: May 3, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Yoshiaki Ito, Kazuo Nishi, Kei Takahashi
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Publication number: 20120101778Abstract: An air conditioning system diagnosis apparatus and an air conditioning system diagnosis result display apparatus capable of representing various kinds of failures with high visibility by generating a system structure diagram that illustrates an air conditioning system in a different form depending on a detected failure and illustrating the failure using this system structure diagram are obtainable. Diagnosis result superimposed diagram generating means for generating a system structure diagram that includes icons, such as an icon of an outdoor unit and an icon of an indoor unit, and a line that links them on the basis of system structure information derived by system structure analyzing means and for superimposing a refrigeration cycle diagnosis result derived by refrigeration cycle analyzing means in the vicinity of an icon of a concerned device in the system structure diagram is included.Type: ApplicationFiled: March 11, 2010Publication date: April 26, 2012Applicant: Mitsubishi Electric CorporationInventors: Tomoaki Gyota, Noriyuki Kushiro, Yoshiaki Ito, Masanori Nakata, Takeru Kuroiwa
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Publication number: 20120086422Abstract: A DCDC converter includes a control circuit, a transistor in which switching is controlled by being supplied voltage output from the control circuit to a gate electrode of the transistor, a voltage conversion portion in which supply of input voltage is controlled by the switching of the transistor and output power commensurate with duty ratio of the switching of the transistor, and a detection circuit detecting the output power. Further, the control circuit includes a control signal generation circuit generating a control signal with a pulse voltage waveform and a selection circuit applying voltage of the control signal to the gate electrode in the case where current detected by the detection circuit is the same as or exceeds the threshold value and applying voltage for turning on the transistor to the gate electrode in the case where the current detected by the detection circuit falls below the threshold value.Type: ApplicationFiled: September 22, 2011Publication date: April 12, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Yoshiaki Ito, Kei Takahashi
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Publication number: 20120085637Abstract: A method and apparatus for easily generating ozone with a high concentration in the air without requiring a high voltage power supply or a vacuum apparatus, wherein an ozone gas with a high concentration is generated in the atmosphere around a hemimorphic crystal of which the direction of polarization is uniform by placing the crystal in the air and repeatedly heating and cooling the crystal, are provided.Type: ApplicationFiled: November 21, 2007Publication date: April 12, 2012Inventors: Yoshiaki Ito, Shinzo Yoshikado, Yoshikazu Nakanishi
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Publication number: 20120081091Abstract: A current generator circuit included in a triangle-wave generator circuit in a control circuit includes plural stages of current mirrors connected in parallel with each other. The plural stages of current mirrors are placed so that the sum of output currents output therefrom becomes an output current of the current generator circuit. A switching element that controls the on/off state of a current in accordance with the amount of load current of a DCDC converter is connected to each of the current mirrors.Type: ApplicationFiled: September 23, 2011Publication date: April 5, 2012Inventor: Yoshiaki Ito
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Patent number: 8146237Abstract: In a magnetic head manufacturing method, a floated surface of each block having plural magnetic head elements formed and arranged on a substrate is ground and lapped in a grinding/lapping step. The grinding/lapping step contains an angle adjusting step for adjusting the angle of the floated surface of the block with reference to a magnetic-head-element formed surface of a substrate and grinding the floated surface concerned, and a finishing lapping step of lapping the floated surface at an angle adjusted in the angle adjusting step.Type: GrantFiled: April 28, 2009Date of Patent: April 3, 2012Assignee: SAE Magnetics (H.K.) Ltd.Inventors: Yoshiaki Ito, Osamu Fukuroi, Hiroyasu Tuchiya, Kenji Kodaka
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Publication number: 20120057376Abstract: It is an object to obtain a detection circuit for detecting feedback voltage without variation in output voltage/current or in output voltage by the operation temperature, and a power supply circuit including thereof. A power supply circuit includes a detection circuit, an amplifier circuit outputting an output voltage, a control circuit, and a divider circuit. The detection circuit includes first and second reference voltage generation circuits and an input signal adjustment circuit. The control circuit is electrically connected to the amplifier circuit and includes the detection circuit, an error amplifier circuit, a pulse width modulation driver, a triangle-wave generation circuit, and a capacitor. The divider circuit is electrically connected to the amplifier circuit and the control circuit and inputs a voltage obtained by dividing the output voltage to the second reference voltage generation circuit.Type: ApplicationFiled: August 19, 2011Publication date: March 8, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventor: Yoshiaki ITO
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Publication number: 20120056863Abstract: The oscillator circuit includes a comparator circuit which compares a potential supplied to one of input terminals with a potential supplied to the other of the input terminals and outputs a high power supply potential or a low power supply potential, a capacitor which is electrically connected to the one of the input terminals of the comparator circuit, and a charge and discharge circuit which charges and discharges the capacitor. The charge and discharge circuit includes a first current supply circuit and a second current supply circuit. Each of a current value of the first current supply circuit and a current value of the second current supply circuit can be controlled with the use of a digital control signal.Type: ApplicationFiled: September 2, 2011Publication date: March 8, 2012Inventors: Kazunori Watanabe, Yoshiaki Ito
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Publication number: 20120050086Abstract: An AD converter includes a first oscillator outputting a first frequency in accordance with a reference voltage; a second oscillator outputting a second frequency in accordance with an input voltage; a first counter measuring the first frequency; a second counter measuring the second frequency; and a comparator comparing a measurement result of the first frequency and a measurement result of the second frequency and outputting a digital value in accordance with the input voltage.Type: ApplicationFiled: August 19, 2011Publication date: March 1, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventor: Yoshiaki ITO
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Publication number: 20120042926Abstract: A photoelectric conversion module in which an output voltage defect is suppressed is obtained by forming in parallel over a substrate n number (n is a natural number) of integrated photoelectric conversion devices each including a plurality of cells that are connected in series, and electrically connecting in parallel n?1 number or less of integrated photoelectric conversion devices with normal electrical characteristics and excluding an integrated photoelectric conversion device with a characteristic defect such as a short-circuit between top and bottom electrodes or a leak current due to a structural defect or the like formed in a semiconductor layer or the like.Type: ApplicationFiled: August 18, 2011Publication date: February 23, 2012Inventors: Kazuo Nishi, Yasushi Maeda, Ryosuke Motoyoshi, Yuji Oda, Kei Takahashi, Yoshiaki Ito, Tatsuji Nishijima
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Patent number: 8112498Abstract: To provide an easy and simple mapping between objects representing different network systems A and B. In the configuration where data of an object, a system component, is available in another system, it is provided with an intermediate model 102 which is mutually accessible. The intermediate model has an intermediate object 103corresponding to a component. Each system performs mapping to the intermediate object 103 an item of a corresponding component 106 of the system, and transmits data to an mapped item. In addition, the system accesses the intermediate object to obtain data corresponding to the item when component data of the other system is needed.Type: GrantFiled: November 13, 2002Date of Patent: February 7, 2012Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Noriyuki Komiya, Noriyuki Kushiro, Yoshiaki Ito, Masanori Nakata, Shigeki Suzuki, Yoshiko Ochiai
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Publication number: 20120019222Abstract: An object is to obtain a rectifier having a small voltage drop and to reduce the fabrication cost of a converter circuit. A photoelectric transducer device including: a photoelectric transducer element; and a converter circuit stepping up or stepping down an output of the photoelectric transducer element and including a switching element and a rectifier, in which the switching element is a first oxide semiconductor transistor that is normally off and in which the rectifier is a second oxide semiconductor transistor that is diode-connected and normally on.Type: ApplicationFiled: June 1, 2011Publication date: January 26, 2012Inventors: Hajime Kimura, Yoshiaki Ito, Takuro Ohmaru, Shunpei Yamazaki
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Publication number: 20120016191Abstract: An endoscope cover of a cover-adapted treatment includes a cover insertion portion main body, the cover insertion portion main body including a cover bending portion which is provided to a proximal side of a cover distal end portion and which is configured to be bent in response to a bending of a main body bending portion of an endoscope main body in an attached condition where the endoscope main body is inserted in an insertion passage. The endoscope cover includes a positioning section configured to determine an insertion position of the endoscope main body where the main body distal portion does not project from a distal end of the cover insertion portion main body in the attached condition, and one or more treatment arm/arms which projects/project from the distal end of the cover insertion portion main body toward a distal side.Type: ApplicationFiled: September 22, 2011Publication date: January 19, 2012Applicant: OLYMPUS CORPORATIONInventors: Yoshiaki Ito, Hirokazu Tanaka, Hideya Kitagawa
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Publication number: 20120004503Abstract: A treatment endoscope includes that a body cavity insertion portion which includes a main body distal hard portion, and a main body curving portion provided to a proximal side of the main body distal hard portion, one or more treatment arm/arms projecting to a distal side from the main body distal hard portion, each of the treatment arm/arms including a curving mechanism, an operation portion provided to the proximal side of the body cavity insertion portion, and an observation section configured to image a field of view in a body cavity, the observation section including an imaging section provided within the main body distal hard portion. The treatment endoscope includes that an operation portion attaching/detaching mechanism configured to removably attach the operation portion to the body cavity insertion portion, and an observation section attaching/detaching mechanism configured to removably attach the observation section to the body cavity insertion portion.Type: ApplicationFiled: September 19, 2011Publication date: January 5, 2012Applicant: OLYMPUS CORPORATIONInventors: Masayuki KAWAURA, Yoshiaki Ito, Hirokazu Tanaka, Hideya Kitagawa, Hajime Tamura
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Publication number: 20110315612Abstract: A desalination apparatus according to the present invention includes: a pretreatment device having a pretreatment membrane that filters a turbid content contained in raw water; a reverse osmosis membrane device having a reverse osmosis membrane that reduces a salt content contained in filtrate water supplied from the pretreatment device to produce permeated water; a first control valve that is provided between a high-pressure pump mounted on a filtrate water line through which the filtrate water is supplied from the pretreatment device to the reverse osmosis membrane device and the reverse osmosis membrane device, and temporarily decreases a supply pressure of the filtrate water; and the control device that operates the first control valve to perform suck-back control by which a pressure at the entrance of the reverse osmosis membrane device is decreased in a pulse-like manner during operation.Type: ApplicationFiled: August 7, 2009Publication date: December 29, 2011Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hidemasa Kakigami, Yoshiaki Ito, Kazuhisa Takeuchi, Katsunori Matsui, Hideo Iwahashi
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Publication number: 20110309239Abstract: An object is to obtain a diode having a small voltage drop and to reduce the fabrication cost of a converter circuit. A photoelectric transducer device including: a photoelectric transducer element; and a converter circuit stepping up or stepping down an output of the photoelectric transducer element and including a switching element and a rectifier, in which the switching element is a first insulated gate bipolar transistor that is normally off and in which the rectifier is a second insulated gate bipolar transistor that is diode-connected and normally on.Type: ApplicationFiled: May 24, 2011Publication date: December 22, 2011Inventors: Hajime Kimura, Satoshi Shinohara, Yoshiaki Ito, Takuro Ohmaru, Shunpei Yamazaki
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Publication number: 20110309007Abstract: An embodiment of the present invention includes: a spiral type pressure vessel 15 in which a plurality of reverse osmosis membrane apparatuses 13-1 to 13-10 having spiral reverse osmosis membranes is connected through a permeated water pipe 14, and is housed in a connected state; a raw water supplying line that supplies raw water 11 into the pressure vessel 15; a concentrated water discharging line through which concentrated water 16 concentrated is discharged; a plug 17 that blocks the permeated water pipe 14 at the center of the reverse osmosis membrane apparatuses 13-1 to 13-10; a front-side permeated water line and a front-side permeated water line through which front-side permeated water 12-1 and rear-side permeated water 12-2 are discharged to the exterior, respectively, which are separated fore and aft, respectively, of the permeated water pipe 14 blocked by the plug 17; a pressure regulating valve 20 that is mounted in the raw wares supplying line and regulates the supply pressure of the raw water 11;Type: ApplicationFiled: August 7, 2009Publication date: December 22, 2011Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yoshiaki Ito, Kazuhisa Takeuchi, Takayoshi Hori, Kenji Tanaka, Hideo Iwahashi
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Publication number: 20110303606Abstract: An embodiment of the present invention includes: a recycle line that brings a part of salt-enriched membrane separation concentrated water 26 back to the rear flow side of a pretreatment apparatus 12; a water discharge line that discharges the remained concentrated water into a sea area; and a control apparatus 31 that controls to adjust the ratio between the discharging amount of the discharging membrane separation concentrated water to be discharged into a sea area and the supplying amount of supplying seawater. A pH is set to be equal to or less than 7.3 by adding acid 21. The salt 18 is obtained from the dryer 19, and produced water (fresh water) 29 is obtained by combining evaporated water 28 supplied from the evaporator 16 with the permeated water 24 supplied from the reverse osmosis membrane apparatus 25.Type: ApplicationFiled: August 7, 2009Publication date: December 15, 2011Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazuhisa Takeuchi, Yoshiaki Ito, Hidemasa Kakigami, Hideo Iwahashi, Katsunori Matsui, Kenji Tanaka
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Publication number: 20110285372Abstract: An object is to reduce power consumption of a semiconductor device including a DC-DC converter circuit. The semiconductor device includes a DC-DC converter circuit and a microprocessor. The DC-DC converter circuit includes a conversion circuit including an inductor and a transistor, and a control circuit including a comparison circuit and a logic circuit. A hysteresis comparator is used as the comparison circuit. In the control circuit, the comparison circuit compares an output signal of the conversion circuit with a first reference potential or a second reference potential, and the logic circuit performs arithmetic operation between an output signal of the comparison circuit and a clock signal of the microprocessor. In the conversion circuit, the transistor controls current flowing through the inductor in accordance with an output signal of the logic circuit, and the output signal of the conversion circuit is generated in accordance with the current flowing through the inductor.Type: ApplicationFiled: May 17, 2011Publication date: November 24, 2011Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Kei TAKAHASHI, Yoshiaki ITO
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Publication number: 20110285426Abstract: An object is to reduce power consumption of a semiconductor device including a DC-DC converter circuit. The semiconductor device includes a DC-DC converter circuit and a microprocessor. The DC-DC converter circuit includes a conversion circuit including an inductor and a transistor, and a control circuit including a comparison circuit and a logic circuit. In the control circuit, the comparison circuit compares an output of the conversion circuit and a reference value, and the logic circuit performs an arithmetic operation between an output of the comparison circuit and a clock signal of the microprocessor. In the conversion circuit, the transistor controls a current flowing through the inductor in accordance with an output of the logic circuit, and the output of the conversion circuit is generated in accordance with the current flowing through the inductor.Type: ApplicationFiled: May 18, 2011Publication date: November 24, 2011Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Kei TAKAHASHI, Yoshiaki ITO