Patents by Inventor Yoshitaka Hirai
Yoshitaka Hirai 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: 11942242Abstract: A wiring member includes a wiring body and a pattern. The wiring body includes a plurality of wire-like transmission members and a base material. The plurality of wire-like transmission members are fixed to the base material in an aligned state, and the pattern is provided on the wiring body. The pattern makes a two-dimensional position of at least a part of a portion related to the base material recognizable in the wiring body.Type: GrantFiled: March 29, 2019Date of Patent: March 26, 2024Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Suguru Yasuda, Haruka Nakano, Motohiro Yokoi, Kenta Ito, Hiroki Hirai, Makoto Higashikozono, Koichiro Goto, Junichi Shirakawa, Yoshitaka Kami, Yasushi Nomura, Sofia Barillaro
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Patent number: 11927355Abstract: An air conditioning and ventilating system including: an air conditioning device including a heat exchanger configured to generate conditioned air by heat exchange with a refrigerant; a ventilation device communicatively connected to the air conditioning device and including a supply air fan and/or an exhaust fan; an airflow volume detection unit configured to detect an airflow volume equivalent value of the ventilation device; and a control unit. On determination that the airflow volume equivalent value acquired from the airflow volume detection unit is equal to or less than a first predetermined value, the control unit sets an operation of the air conditioning device to a stop state.Type: GrantFiled: March 22, 2022Date of Patent: March 12, 2024Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Kousuke Hirai, Akiyoshi Yamamoto, Gakuto Sakai, Tooru Fujimoto, Yoshitaka Matsugi
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Patent number: 10291238Abstract: An object is to improve Power Supply Rejection Ratio in a PLL circuit. A proportional path 103 is provided in a first power supply system 101 and outputs analog proportional signal AP according to a detection signal DET. An integral path 104 is provided in a second power supply system and outputs an analog integral signal AI according to the DET. A CCO driver 16 is provided in the first power supply system 101 and outputs control current ICCO according to the AP and the AI. A CCO 17 is provided in the second power supply system 102 and outputs an output signal Fout according to the ICCO. A phase frequency detector 11 is provided in the second power supply system 102 and configured to detect a phase difference between a reference signal Fref and a signal FM obtained by feeding back the Fout and then outputs the DET.Type: GrantFiled: February 24, 2017Date of Patent: May 14, 2019Assignee: Renesas Electronics CorporationInventors: Atsushi Motozawa, Yoshitaka Hirai
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Patent number: 9970751Abstract: An optical axis angle inspection device is provided with a first camera and a screen which are disposed in front of a laser distance meter, is provided with a point light source on the screen, and is provided with a second camera disposed behind the laser distance meter. An image of the laser distance meter is captured by the first camera, and the height of the point light source is fitted to the height of the laser distance meter on the basis of the captured image. Then, an image of the point light source is captured by the second camera, and a difference in height between the centroid of the captured image and the point light source is specified. The optical axis angle of the laser distance meter is calculated from the difference in height and the distance from the screen to the laser distance meter.Type: GrantFiled: June 3, 2014Date of Patent: May 15, 2018Assignee: Honda Motor Co., Ltd.Inventors: Akira Sakamoto, Tatsuya Sakai, Yoshitaka Hirai, Hirotaka Itoh, Takayuki Ogawa
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Publication number: 20170250692Abstract: An object is to improve Power Supply Rejection Ratio in a PLL circuit. A proportional path 103 is provided in a first power supply system 101 and outputs analog proportional signal AP according to a detection signal DET. An integral path 104 is provided in a second power supply system and outputs an analog integral signal AI according to the DET. A CCO driver 16 is provided in the first power supply system 101 and outputs control current ICCO according to the AP and the AI. A CCO 17 is provided in the second power supply system 102 and outputs an output signal Fout according to the ICCO. A phase frequency detector 11 is provided in the second power supply system 102 and configured to detect a phase difference between a reference signal Fref and a signal FM obtained by feeding back the Fout and then outputs the DET.Type: ApplicationFiled: February 24, 2017Publication date: August 31, 2017Inventors: Atsushi MOTOZAWA, Yoshitaka HIRAI
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Patent number: 9553718Abstract: According to one embodiment, a PLL circuit includes: a phase comparator (13); a pulse width control unit that adjusts a pulse width of comparison results (UP, DN) of the phase comparator (13) and outputs comparison results (UPi, DNi) having a pulse width smaller than that of comparison results (UPp, DNp); a charge pump (14) that outputs a current (Ip) according to the comparison results (UPp, DNp); a charge pump (15) that outputs a current (Ii) according to the comparison results (UPi, DNi); a filter (16) that removes a high-frequency component of a voltage generated based on the current (Ip) and outputs a control voltage (Vp); a filter (17) that outputs, as a control voltage (Vi), a result obtained by integrating the current (Ii); and a voltage control oscillator (18) that generates an oscillating signal having a frequency according to the control voltage (Vp, Vi).Type: GrantFiled: December 7, 2015Date of Patent: January 24, 2017Assignee: Renesas Electronics CorporationInventor: Yoshitaka Hirai
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Publication number: 20160248579Abstract: According to one embodiment, a PLL circuit includes: a phase comparator (13); a pulse width control unit that adjusts a pulse width of comparison results (UP, DN) of the phase comparator (13) and outputs comparison results (UPi, DNi) having a pulse width smaller than that of comparison results (UPp, DNp); a charge pump (14) that outputs a current (Ip) according to the comparison results (UPp, DNp); a charge pump (15) that outputs a current (Ii) according to the comparison results (UPi, DNi); a filter (16) that removes a high-frequency component of a voltage generated based on the current (Ip) and outputs a control voltage (Vp); a filter (17) that outputs, as a control voltage (Vi), a result obtained by integrating the current (Ii); and a voltage control oscillator (18) that generates an oscillating signal having a frequency according to the control voltage (Vp, Vi).Type: ApplicationFiled: December 7, 2015Publication date: August 25, 2016Applicant: Renesas Electronics CorporationInventor: Yoshitaka HIRAI
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Publication number: 20160216105Abstract: An optical axis angle inspection device is provided with a first camera and a screen which are disposed in front of a laser distance meter, is provided with a point light source on the screen, and is provided with a second camera disposed behind the laser distance meter. An image of the laser distance meter is captured by the first camera, and the height of the point light source is fitted to the height of the laser distance meter on the basis of the captured image. Then, an image of the point light source is captured by the second camera, and a difference in height between the centroid of the captured image and the point light source is specified. The optical axis angle of the laser distance meter is calculated from the difference in height and the distance from the screen to the laser distance meter.Type: ApplicationFiled: June 3, 2014Publication date: July 28, 2016Inventors: Akira SAKAMOTO, Tatsuya SAKAI, Yoshitaka HIRAI, Hirotaka ITOH, Takayuki OGAWA
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Patent number: 9279743Abstract: An inspection method of the present invention performs a step of giving the electric motor an instructing for rotating a foot shaft in a reverse direction and checking whether the foot shaft is rotating in the reverse direction, and a step of checking whether hydraulic pressure acting on the hydraulic pump has reached a predetermined pressure level. By checking a rotating direction of the electric motor, it is possible to check electrical connections. By checking the hydraulic pressure, it is possible to check whether there is any trouble in a hydraulic system. Namely, the present invention can perform an electrical connection check and a hydraulic pressure check in a collective fashion.Type: GrantFiled: November 11, 2014Date of Patent: March 8, 2016Assignee: HONDA MOTOR CO., LTD.Inventors: Hirotsune Fukei, Manato Saitou, Yoshitaka Hirai, Minoru Tsuchida, Masahide Ueda
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Publication number: 20150134195Abstract: An inspection method of the present invention performs a step of giving the electric motor an instructing for rotating a foot shaft in a reverse direction and checking whether the foot shaft is rotating in the reverse direction, and a step of checking whether hydraulic pressure acting on the hydraulic pump has reached a predetermined pressure level. By checking a rotating direction of the electric motor, it is possible to check electrical connections. By checking the hydraulic pressure, it is possible to check whether there is any trouble in a hydraulic system. Namely, the present invention can perform an electrical connection check and a hydraulic pressure check in a collective fashion.Type: ApplicationFiled: November 11, 2014Publication date: May 14, 2015Inventors: Hirotsune Fukei, Manato Saitou, Yoshitaka Hirai, Minoru Tsuchida, Masahide Ueda
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Patent number: 8616086Abstract: A harmonic speed reducer for robots is provided with a frame, an annular circular spline, a cylindrical flexspline, and an elliptical wave generator. The frame has internal threads each tapped parallel to the center axis line, the threads each extending from a circular spline mounting seat to the inside of the frame. The internal thread in the circular spline mounting seat has a peripheral edge portion at an opening thereof with a recess. The recess is formed so as to have a diameter larger than a diameter of the internal thread.Type: GrantFiled: May 14, 2010Date of Patent: December 31, 2013Assignee: Denso Wave IncorporatedInventors: Yoshitaka Hirai, Masatoshi Kojima
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Patent number: 8492070Abstract: A photocurable and thermosetting composition comprises (A) a carboxyl group-containing resin having at least one carboxyl group in its molecule, (B) a photopolymerization initiator having an oxime linkage represented by the following general formula (I), (C) a reactive diluent, and (D) an epoxy compound having two or more epoxy groups in its molecule. The above-mentioned photopolymerization initiator (B) is incorporated into a formulation which is different from at least a formulation into which the above-mentioned carboxyl group-containing resin (A) and the above-mentioned reactive diluent (C) are incorporated to formulate a system comprising at least two parts.Type: GrantFiled: July 27, 2012Date of Patent: July 23, 2013Assignee: Taiyo Ink Manufacturing Co., Ltd.Inventors: Hideaki Kojima, Hidekazu Miyabe, Shouji Minegishi, Naoki Yoneda, Yoshitaka Hirai
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Publication number: 20120295200Abstract: A photocurable and thermosetting composition comprises (A) a carboxyl group-containing resin having at least one carboxyl group in its molecule, (B) a photopolymerization initiator having an oxime linkage represented by the following general formula (I), (C) a reactive diluent, and (D) an epoxy compound having two or more epoxy groups in its molecule. The above-mentioned photopolymerization initiator (B) is incorporated into a formulation which is different from at least a formulation into which the above-mentioned carboxyl group-containing resin (A) and the above-mentioned reactive diluent (C) are incorporated to formulate a system comprising at least two parts.Type: ApplicationFiled: July 27, 2012Publication date: November 22, 2012Applicant: Taiyo Ink Manufacturing Co., Ltd.Inventors: Hideaki Kojima, Hidekazu Miyabe, Shouji Minegishi, Naoki Yoneda, Yoshitaka Hirai
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Patent number: 8264286Abstract: A first exemplary aspect of an embodiment of the present invention is a phase-locked loop circuit including: a voltage-current converter that converts a control voltage into a control current, the control voltage generated according to a phase difference between an input pulse signal and a feedback pulse signal fed back from an output side of a current controlled oscillator; the current controlled oscillator that generates an output pulse signal having a frequency according to the control current; a current detection unit that detects the control current; and a frequency range switch that switches a frequency range of the output pulse signal according to the detected control current.Type: GrantFiled: August 28, 2009Date of Patent: September 11, 2012Assignee: Renesas Electronics CorporationInventor: Yoshitaka Hirai
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Patent number: 8040191Abstract: A PLL circuit includes first and second charge pump circuits controlling an output voltage according to an output signal of a phase comparator, a first filter filtering out predetermined frequency component included in a signal generated according to current output from the first charge pump circuit, and outputting the signal as a first voltage signal, a second filter inputting a current output from the second charge pump circuit and outputting a predetermined constant voltage as a second voltage signal, a voltage control unit outputting a third voltage signal according to a comparison result between the first voltage signal output from the first filter and a reference voltage signal, and a voltage controlled oscillator that has a first low gain property, a second low gain property, and a high gain property, and is controlled by the first to third voltage signals to generate an oscillating frequency.Type: GrantFiled: March 31, 2010Date of Patent: October 18, 2011Assignee: Renesas Electronics CorporationInventor: Yoshitaka Hirai
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Publication number: 20100288066Abstract: A harmonic speed reducer for robots is provided with a frame, an annular circular spline, a cylindrical flexspline, and an elliptical wave generator. The frame has internal threads each tapped parallel to the center axis line, the threads each extending from a circular spline mounting seat to the inside of the frame. The internal thread in the circular spline mounting seat has a peripheral edge portion at an opening thereof with a recess.Type: ApplicationFiled: May 14, 2010Publication date: November 18, 2010Applicant: DENSO WAVE INCORPORATEDInventors: Yoshitaka Hirai, Masatoshi Kojima
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Publication number: 20100271141Abstract: A PLL circuit includes first and second charge pump circuits controlling an output voltage according to an output signal of a phase comparator, a first filter filtering out predetermined frequency component included in a signal generated according to current output from the first charge pump circuit, and outputting the signal as a first voltage signal, a second filter inputting a current output from the second charge pump circuit and outputting a predetermined constant voltage as a second voltage signal, a voltage control unit outputting a third voltage signal according to a comparison result between the first voltage signal output from the first filter and a reference voltage signal, and a voltage controlled oscillator that has a first low gain property, a second low gain property, and a high gain property, and is controlled by the first to third voltage signals to generate an oscillating frequency.Type: ApplicationFiled: March 31, 2010Publication date: October 28, 2010Inventor: Yoshitaka HIRAI
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Publication number: 20100052798Abstract: A first exemplary aspect of an embodiment of the present invention is a phase-locked loop circuit including: a voltage-current converter that converts a control voltage into a control current, the control voltage generated according to a phase difference between an input pulse signal and a feedback pulse signal fed back from an output side of a current controlled oscillator; the current controlled oscillator that generates an output pulse signal having a frequency according to the control current; a current detection unit that detects the control current; and a frequency range switch that switches a frequency range of the output pulse signal according to the detected control current.Type: ApplicationFiled: August 28, 2009Publication date: March 4, 2010Inventor: Yoshitaka Hirai
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Patent number: 7590263Abstract: An ECU of a night vision system stores small obtained images of provisional targets as six templates depending on the distance from infrared cameras, and selects one of the templates depending on the distance up to an actual object. Using the selected template, the ECU performs template matching on images obtained by the infrared cameras, and calculates coordinates of the inspection target. The ECU compares the calculated coordinates of the inspection target and stored reference coordinates with each other, and determines mounted angles of the infrared cameras.Type: GrantFiled: November 23, 2005Date of Patent: September 15, 2009Assignee: Honda Motor Co., Ltd.Inventors: Masahito Watanabe, Masakazu Saka, Nobuharu Nagaoka, Yoshitaka Hirai, Toshiya Okabe
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Publication number: 20080227883Abstract: A photocurable and thermosetting composition comprises (A) a carboxyl group-containing resin having at least one carboxyl group in its molecule, (B) a photopolymerization initiator having an oxime linkage represented by the following general formula (I), (C) a reactive diluent, and (D) an epoxy compound having two or more epoxy groups in its molecule. The above-mentioned photopolymerization initiator (B) is incorporated into a formulation which is different from at least a formulation into which the above-mentioned carboxyl group-containing resin (A) and the above-mentioned reactive diluent (C) are incorporated to formulate a system comprising at least two parts.Type: ApplicationFiled: May 16, 2008Publication date: September 18, 2008Applicant: Taiyo Ink Manufacturing Co., Ltd.Inventors: Hideaki Kojima, Hidekazu Miyabe, Shouji Minegishi, Naoki Yoneda, Yoshitaka Hirai