Patents by Inventor Daisuke Muraoka
Daisuke Muraoka 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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Patent number: 9386246Abstract: To provide a small-area photoelectric conversion device without impairing a resolution switching function, signals for controlling output order control switches provided so as to correspond to photoelectric conversion elements are selected by an output order control circuit and a shift register. In this manner, the number of flip-flops forming a shift register is reduced.Type: GrantFiled: November 11, 2013Date of Patent: July 5, 2016Assignee: SII SEMICONDUCTOR CORPORATIONInventors: Tsutomu Tomioka, Daisuke Muraoka
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Patent number: 9354279Abstract: Provided is a magnetic sensor device, which is configured to connect each terminal of a Hall element to another end of a variable resistor having one end connected to GND by switching of four switches. Thus, a detection voltage level for a magnetic field intensity can be arbitrarily set with a small-scale circuit. The detection voltage level is determined only by the resistance ratio, and hence the influence of fluctuations in power supply voltage and manufacturing fluctuations can be suppressed. This configuration can simplify signal processing and achieve higher-speed signal processing.Type: GrantFiled: February 13, 2013Date of Patent: May 31, 2016Assignee: SII SEMICONDUCTOR CORPORATIONInventor: Daisuke Muraoka
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Patent number: 9322672Abstract: Provided is a magnetic sensor device capable of performing signal processing at high speed with high accuracy. The magnetic sensor device includes: a plurality of Hall elements; a plurality of differential amplifiers to which the plurality of Hall elements are connected, respectively; a detection voltage setting circuit for outputting a reference voltage; and a comparator including: a plurality of differential input pairs connected to the plurality of differential amplifiers, respectively; and a differential input pair connected to the detection voltage setting circuit.Type: GrantFiled: February 19, 2014Date of Patent: April 26, 2016Assignee: SII SEMICONDUCTOR CORPORATIONInventors: Daisuke Muraoka, Minoru Ariyama
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Patent number: 9267818Abstract: Provided is a magnetic sensor device capable of performing signal processing at high speed with high accuracy. The magnetic sensor device includes: a plurality of Hall elements; a plurality of differential amplifiers to which the plurality of Hall elements are connected, respectively; a detection voltage setting circuit for outputting a reference voltage; and a comparator including: a plurality of differential input pairs connected to the plurality of differential amplifiers, respectively; and a differential input pair connected to the detection voltage setting circuit.Type: GrantFiled: February 19, 2014Date of Patent: February 23, 2016Assignee: SEIKO INSTRUMENTS INC.Inventors: Daisuke Muraoka, Minoru Ariyama, Tomoki Hikichi, Kentaro Fukai
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Patent number: 9261569Abstract: Provided is a sensor device capable of removing the influence of each offset voltage of a sensor element, a differential amplifier, and an amplifier of the sensor device, to thereby detect a physical quantity with high precision and respond to high-speed operation.Type: GrantFiled: October 22, 2014Date of Patent: February 16, 2016Assignee: SEIKO INSTRUMENTS INC.Inventors: Minoru Ariyama, Daisuke Muraoka, Tomoki Hikichi, Kentaro Fukai
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Patent number: 9128127Abstract: Provided is a sensor device capable of removing the influence of each offset voltage of a sensor element, a differential amplifier, and an amplifier of the sensor device, to thereby detect a physical quantity with high precision.Type: GrantFiled: September 18, 2014Date of Patent: September 8, 2015Assignee: SEIKO INSTRUMENTS INC.Inventors: Minoru Ariyama, Daisuke Muraoka, Tomoki Hikichi, Kentaro Fukai
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Publication number: 20150115942Abstract: To provide a magnetic sensor circuit that outputs a desired detection pulse while preventing an erroneous detection/erroneous release pulse output when a fluctuation in a power supply voltage occurs within an operating power supply voltage range. A magnetic sensor circuit is configured to include a detection circuit that detects a fluctuation in a power supply voltage or an internal power supply voltage and so as not to latch a determination output of a comparator by a latch circuit that, on the basis of a power supply fluctuation detection signal output from the detection circuit, holds the logic of a control clock signal output from an oscillation circuit for a prescribed period of time and determines the output logic of an output terminal.Type: ApplicationFiled: October 20, 2014Publication date: April 30, 2015Inventors: Tomoki HIKICHI, Daisuke MURAOKA, Minoru ARIYAMA, Kentaro FUKAI
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Publication number: 20150040687Abstract: Provided is a sensor device capable of removing the influence of each offset voltage of a sensor element, a differential amplifier, and an amplifier of the sensor device, to thereby detect a physical quantity with high precision and respond to high-speed operation.Type: ApplicationFiled: October 22, 2014Publication date: February 12, 2015Inventors: Minoru ARIYAMA, Daisuke MURAOKA, Tomoki HIKICHI, Kentaro FUKAI
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Publication number: 20150035567Abstract: An output driver circuit provides an overcurrent protection function by a simple circuit configuration. The output driver circuit has a constant-current circuit, a constant-current mirror MOS transistor, and a selector circuit. The constant-current mirror MOS transistor and the output MOS transistor constitute a current mirror circuit. The gate of the output MOS transistor is controlled by a voltage based on a constant current generated by the constant-current mirror MOS transistor, thereby limiting the current flowing between the source and the drain of the output MOS transistor.Type: ApplicationFiled: October 22, 2014Publication date: February 5, 2015Inventors: Masahiro MITANI, Minoru ARIYAMA, Daisuke MURAOKA, Tomoki HIKICHI
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Publication number: 20150022241Abstract: Provided is a sensor device capable of removing the influence of each offset voltage of a sensor element, a differential amplifier, and an amplifier of the sensor device, to thereby detect a physical quantity with high precision.Type: ApplicationFiled: September 18, 2014Publication date: January 22, 2015Inventors: Minoru ARIYAMA, Daisuke MURAOKA, Tomoki HIKICHI, Kentaro FUKAI
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Publication number: 20140346419Abstract: Provided is a working machine including a device to be maintained and a winch disposed thereover and enabling a maintenance operation. The working machine includes a base machine, at least one device to be maintained installed at the base machine, and a winch which is driven to wind an operation rope. The winch is attached to the base machine to be pivotable, about a winch support shaft, between a use position at which the winch is used while closing at least a part of a maintenance space over the device to be maintained and a maintenance position at which the winch opens the maintenance space upward to enable the maintenance operation to be performed.Type: ApplicationFiled: April 29, 2014Publication date: November 27, 2014Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTDInventors: Daisuke MURAOKA, Takanori YAMASAKI
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Publication number: 20140322344Abstract: A vaccine preparation for treating cancer includes a complex of a hydrophobized polysaccharide and at least one synthetic long peptide derived from a tumor-specific antigenic protein and/or a pathogen-derived antigenic protein. The at least one synthetic long peptide contains at least one CD8+ cytotoxic T-cell recognition epitope and at least one CD4+ helper T-cell recognition epitope. The complex is simultaneously administered to the patient with at least one immunopotentiating agent.Type: ApplicationFiled: August 30, 2012Publication date: October 30, 2014Applicants: National University Corporation Tokyo Medical and Dental University, MIE UniversityInventors: Hiroshi Shiku, Naozumi Harada, Daisuke Muraoka, Kazunari Akiyoshi
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Patent number: 8866474Abstract: A magnetic sensor device for generating a logic output in accordance with a magnetic field intensity applied to a magnetoelectric conversion element includes: a comparator for inputting amplified output signals of the magnetoelectric conversion element, and outputting a comparison result; and a logic circuit for performing arithmetic processing on an output signal of the comparator. Only when the logic output is changed by a change in the magnetic field intensity, the logic circuit performs successive matching determination of logic outputs a plurality of times. Thus, the variation in determination for detection or canceling of a magnetic field intensity, which is caused by noise generated from respective constituent elements included in the magnetic sensor device and external noise, may be reduced while suppressing electric power consumption.Type: GrantFiled: September 11, 2012Date of Patent: October 21, 2014Assignee: Seiko Instruments Inc.Inventors: Daisuke Muraoka, Minoru Ariyama, Tomoki Hikichi, Kentaro Fukai
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Publication number: 20140232387Abstract: Provided is a magnetic sensor device capable of performing signal processing at high speed with high accuracy. The magnetic sensor device includes: a plurality of Hall elements; a plurality of differential amplifiers to which the plurality of Hall elements are connected, respectively; a detection voltage setting circuit for outputting a reference voltage; and a comparator including: a plurality of differential input pairs connected to the plurality of differential amplifiers, respectively; and a differential input pair connected to the detection voltage setting circuit.Type: ApplicationFiled: February 19, 2014Publication date: August 21, 2014Applicant: SEIKO INSTRUMENTS INC.Inventors: Daisuke MURAOKA, Minoru ARIYAMA, Tomoki HIKICHI, Kentaro FUKAI
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Publication number: 20140232388Abstract: Provided is a magnetic sensor device capable of performing signal processing at high speed with high accuracy. The magnetic sensor device includes: a plurality of Hall elements; a plurality of differential amplifiers to which the plurality of Hall elements are connected, respectively; a detection voltage setting circuit for outputting a reference voltage; and a comparator including: a plurality of differential input pairs connected to the plurality of differential amplifiers, respectively; and a differential input pair connected to the detection voltage setting circuit.Type: ApplicationFiled: February 19, 2014Publication date: August 21, 2014Applicant: Seiko Instruments Inc.Inventors: Daisuke MURAOKA, Minoru ARIYAMA
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Publication number: 20140131552Abstract: To provide a small-area photoelectric conversion device without impairing a resolution switching function, signals for controlling output order control switches provided so as to correspond to photoelectric conversion elements are selected by an output order control circuit and a shift register. In this manner, the number of flip-flops forming a shift register is reduced.Type: ApplicationFiled: November 11, 2013Publication date: May 15, 2014Applicant: Seiko Instruments Inc.Inventors: Tsutomu TOMIOKA, Daisuke MURAOKA
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Publication number: 20140093304Abstract: Provided is a pivoting unit including a pivotable body, a horizontal pivot shaft, a support for supporting the pivotable body pivotably about the pivot shaft so as to allow the pivotable body to take a fallen posture and a raised posture in which the pivotable body is more raised than the fallen posture, and a stop member for stopping the pivotable body in the raised posture. The stop member includes a long hole vertically extending and allowing the pivot shaft to be inserted therethrough, being disposed vertically movably between upper and lower positions. The stop member, in the lower position, abuts against an abutment portion, a specific part at a lower end of the pivotable body in the raised posture, to retain the pivotable body in the raised posture, while, in the upper position, allowing the pivotable body to pivot from the raised posture toward the fallen posture.Type: ApplicationFiled: September 12, 2013Publication date: April 3, 2014Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.Inventors: Daisuke MURAOKA, Takanori YAMASAKI, Kouichirou NAGAI
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Publication number: 20140028274Abstract: Provided is a regulator configured to output a stable voltage even when a power supply voltage fluctuates suddenly. The regulator includes: a reference voltage circuit; a differential amplifier; a depletion type NMOS transistor; and a bleeder circuit, in which a power supply terminal of the differential amplifier is connected to an output terminal of the regulator. Further, a power supply terminal of the reference voltage circuit is connected to the output terminal of the regulator.Type: ApplicationFiled: July 29, 2013Publication date: January 30, 2014Applicant: Seiko Instruments Inc.Inventor: Daisuke MURAOKA
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Patent number: 8502529Abstract: Provided is a magnetic sensor device capable of suppressing a variation in determination for detection or canceling of a magnetic field intensity, which is caused by noise generated from respective constituent elements included in the magnetic sensor device and external noise, to thereby achieve high-precision magnetic reading. The magnetic sensor device includes: a first D-type flip-flop and a second D-type flip-flop each having an input terminal connected to an output terminal of a comparator; an XOR circuit having a first input terminal and a second input terminal which are connected to an output terminal of the first D-type flip-flop and an output terminal of the second D-type flip-flop, respectively; a selector circuit; and a third D-type flip-flop having an input terminal connected to an output terminal of the selector circuit.Type: GrantFiled: November 30, 2010Date of Patent: August 6, 2013Assignee: Seiko Instruments Inc.Inventors: Daisuke Muraoka, Minoru Ariyama, Tomoki Hikichi, Manabu Fujimura
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Patent number: 8491251Abstract: A gripping device includes a gripping-device body mounted to an end of a working arm; two gripping members pivotably supported by this body in an opening-closing direction; and a driver that drives the gripping members to open and close them. At least one of the gripping members includes one of various kinds of detachable sections each including a gripping segment; a holding section pivotably connected to the gripping-device body about a central pivot shaft and selectively holding the detachable section in a detachable manner; and a coupling member for detachable coupling. The detachable section has a restrained segment having a detachable-section through-hole extending parallel to the central pivot shaft. The holding section has an opening-closing-direction restraining segment that restrains the restrained segment in the opening-closing direction and a holding wall to which the restrained segment is fastened with the coupling member from a direction parallel to the detachable-section through-hole.Type: GrantFiled: May 19, 2010Date of Patent: July 23, 2013Assignee: Kobelco Construction Machinery Co., Ltd.Inventors: Daisuke Muraoka, Takanori Yamasaki