Patents by Inventor Hiroyuki Horii
Hiroyuki Horii 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: 20240101093Abstract: A vehicle brake system includes a switching valve switchable between a first state allowing communication between a first fluid pressure generating device and a frictional brake and a second state allowing communication between a second fluid pressure generating device and the frictional brake. The second fluid pressure generating device generates a fluid pressure by moving a piston with an electric actuator, and has a fluid pressure supply port connected to the switching valve and an atmosphere opening port connected to a reservoir tank. When, due to a failure, the switching valve becomes a third state in which the switching valve makes each of the first fluid pressure generating device and the second fluid pressure generating device communicate with the frictional brake, a control device controls the second fluid pressure generating device to close the atmosphere opening port with the piston.Type: ApplicationFiled: September 20, 2023Publication date: March 28, 2024Inventors: Atsuki OHIRA, Eisuke HORII, Hiroyuki IWASAKI, Masayuki UENO, Shotaro YAMAZAKI, Takashi SHIMADA, Tomoaki KOTAKI, Yohei SATO
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Patent number: 11935694Abstract: In a step of inserting each of a plurality of disk-shaped windings into a recessed groove portion of a corresponding one of a plurality of ring-shaped fixing portions, each of the plurality of disk-shaped windings is inserted in a state where an outer circumferential surface of each of the plurality of disk-shaped windings is spaced apart from a bottom surface of the recessed groove portion of a corresponding one of the plurality of ring-shaped fixing portions. In a step of bringing the outer circumferential surface of each of the plurality of disk-shaped windings into direct or indirect contact with the bottom surface of the recessed groove portion of the corresponding one of the plurality of ring-shaped fixing portions, each of the plurality of disk-shaped windings and an outer frame portion are cooled and contracted for contact.Type: GrantFiled: May 20, 2019Date of Patent: March 19, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Tatsuya Inoue, Hiroyuki Horii
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Publication number: 20240075915Abstract: A vehicle brake system includes a first fluid pressure generating device for generating a fluid pressure according to a brake operating amount, a second fluid pressure generating device for generating a fluid pressure by moving a piston with an electric actuator, and a switching valve switchable between a first state allowing communication between the first fluid pressure generating device and a vehicle behavior stabilizing device and a second state allowing communication between the second fluid pressure generating device and the vehicle behavior stabilizing device. A control device places the switching valve in the second state during execution of automatic brake control, and places the switching valve in the first state when a predetermined abnormality occurs in the vehicle, except that the control device places the switching valve in the second state when an abnormality including inability of the second fluid pressure generating device to generate the fluid pressure occurs.Type: ApplicationFiled: September 5, 2023Publication date: March 7, 2024Inventors: Eisuke HORII, Hiroyuki IWASAKI, Yohei SATO, Tomoaki KOTAKI, Masayuki UENO, Shotaro YAMAZAKI, Atsuki OHIRA
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Publication number: 20220215993Abstract: In a step of inserting each of a plurality of disk-shaped windings into a recessed groove portion of a corresponding one of a plurality of ring-shaped fixing portions, each of the plurality of disk-shaped windings is inserted in a state where an outer circumferential surface of each of the plurality of disk-shaped windings is spaced apart from a bottom surface of the recessed groove portion of a corresponding one of the plurality of ring-shaped fixing portions. In a step of bringing the outer circumferential surface of each of the plurality of disk-shaped windings into direct or indirect contact with the bottom surface of the recessed groove portion of the corresponding one of the plurality of ring-shaped fixing portions, each of the plurality of disk-shaped windings and an outer frame portion are cooled and contracted for contact.Type: ApplicationFiled: May 20, 2019Publication date: July 7, 2022Applicant: Mitsubishi Electric CorporationInventors: Tatsuya INOUE, Hiroyuki HORII
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Patent number: 10020746Abstract: A DC-DC converter includes a filter circuit, a full-bridge circuit connected to the filter circuit, and a transformer having a primary winding and a secondary winding, the primary winding being connected to the full-bridge circuit. The full-bridge circuit includes first to fourth semiconductor switches. First to fourth overvoltage protection circuits are associated with the first to fourth semiconductor switches, respectively. Each of the overvoltage protection circuits is connected in parallel its associated semiconductor switch.Type: GrantFiled: August 16, 2017Date of Patent: July 10, 2018Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Hiroyuki Horii, Koichi Ueki
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Publication number: 20170346409Abstract: A DC-DC converter includes a filter circuit, a full-bridge circuit connected to the filter circuit, and a transformer having a primary winding and a secondary winding, the primary winding being connected to the full-bridge circuit. The full-bridge circuit includes first to fourth semiconductor switches. First to fourth overvoltage protection circuits are associated with the first to fourth semiconductor switches, respectively. Each of the overvoltage protection circuits is connected in parallel its associated semiconductor switch.Type: ApplicationFiled: August 16, 2017Publication date: November 30, 2017Inventors: Hiroyuki Horii, Koichi Ueki
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Patent number: 8976416Abstract: In a case in which image data used to form an image on a recording medium in a plurality of scans performed across a recording area of the recording medium is generated, a coefficient determination unit determines assignments of output density for the scans on the basis of density characteristics corresponding to the type of recording medium indicated by a recording-medium signal. Multipliers and binary conversion units generate image data for the scans from input image data on the basis of the assignments of the output density.Type: GrantFiled: June 16, 2008Date of Patent: March 10, 2015Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Horii, Hisashi Ishikawa, Koji Moriya
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Patent number: 8743225Abstract: An imaging control system for controlling a direction of an optical axis of an imaging unit is provided. The imaging control system includes a pan change unit configured to change the direction of the optical axis to a pan direction, a tilt change unit configured to change the direction of the optical axis to a tilt direction, and a display control unit configured to display the change direction to which the direction of the optical axis is changed by the pan change unit, corresponding to the change by the tilt change unit, together with an image captured by the imaging unit.Type: GrantFiled: July 8, 2011Date of Patent: June 3, 2014Assignee: Canon Kabushiki KaishaInventor: Hiroyuki Horii
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Patent number: 8498530Abstract: A detection apparatus determines whether an output of the light-receiving unit meets a predetermined reference level when the light emission amount of the light-emitting unit is changed, under a condition that the output of the light-receiving unit changes according to a change in a light emission amount of the light-emitting unit. The detection apparatus detects, based on the output from the light-receiving unit, that the light emitted from the light-emitting unit to the light-receiving unit is blocked, under a condition that the light-emitting unit is emitting light based on a light emission amount emitted from the light-emitting unit when it has been determined that the output of the light-receiving unit meets the predetermined reference level.Type: GrantFiled: September 2, 2009Date of Patent: July 30, 2013Assignee: Canon Kabushiki KaishaInventor: Hiroyuki Horii
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Patent number: 8462383Abstract: An image forming apparatus includes a color converting unit 330 for subjecting the input image data to a color conversion in accordance with ink color, and generating a print image 400; a print data generator 370-x for generating print data of each scan corresponding to multiple scans of the print image generated by the color converting unit 330; print controller 380-x for controlling at least one of the color converting unit 330 or print data generator 370-x based upon the input image data 320 or a position on a scanning line of each dot to be printed in the print image 400 generated by the color converting unit 330; and a printer engine 180 for printing on the print medium based upon the print data generated by the print data generator 370-x.Type: GrantFiled: September 12, 2012Date of Patent: June 11, 2013Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Horii, Hisashi Ishikawa
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Publication number: 20130003094Abstract: An image forming apparatus includes a color converting unit 330 for subjecting the input image data to a color conversion in accordance with ink color, and generating a print image 400; a print data generator 370-x for generating print data of each scan corresponding to multiple scans of the print image generated by the color converting unit 330; print controller 380-x for controlling at least one of the color converting unit 330 or print data generator 370-x based upon the input image data 320 or a position on a scanning line of each dot to be printed in the print image 400 generated by the color converting unit 330; and a printer engine 180 for printing on the print medium based upon the print data generated by the print data generator 370-x.Type: ApplicationFiled: September 12, 2012Publication date: January 3, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Hiroyuki Horii, Hisashi Ishikawa
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Patent number: 8289571Abstract: An image forming apparatus includes a color converting unit 330 for subjecting the input image data to a color conversion in accordance with ink color and generating a print image 400; a print data generator 370-x for generating print data of each scan corresponding to multiple scans of the print image generated by the color converting unit 330; print controller 380-x for controlling at least one of the color converting unit 330 or print data generator 370-x based upon the input image data 320 or a position on a scanning line of each dot to be printed in the print image 400 generated by the color converting unit 330; and a printer engine 180 for printing on the print medium based upon the print data generated by the print data generator 370-x.Type: GrantFiled: July 7, 2009Date of Patent: October 16, 2012Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Horii, Hisashi Ishikawa
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Publication number: 20120007999Abstract: An imaging control system for controlling a direction of an optical axis of an imaging unit is provided. The imaging control system includes a pan change unit configured to change the direction of the optical axis to a pan direction, a tilt change unit configured to change the direction of the optical axis to a tilt direction, and a display control unit configured to display the change direction to which the direction of the optical axis is changed by the pan change unit, corresponding to the change by the tilt change unit, together with an image captured by the imaging unit.Type: ApplicationFiled: July 8, 2011Publication date: January 12, 2012Applicant: CANON KABUSHIKI KAISHAInventor: Hiroyuki Horii
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Patent number: 7915875Abstract: A current-mode controlled DC-DC converter includes a comparator comparing a first or second current detection signal with a first or second reference current that is based on an error voltage of a voltage detection signal, a pulse generator generating a first pulse signal whose ON time is longer than an interval between when the second current detection signal reaches a minimum value and when the second current detection signal reaches the second reference current, a pulse generator generating a second pulse signal whose ON time is longer than an interval between when the first current detection signal reaches a minimum value and when the first current detection signal reaches the first reference current, the second pulse signal being behind the first pulse signal by a half period, and a PWM circuit generating a first or second PWM signal according to the pulse signal and an output signal from the comparator, thereby turning on/off a switch.Type: GrantFiled: October 14, 2008Date of Patent: March 29, 2011Assignees: Sanken Electric Co., Ltd., Shimane UniversityInventors: Hideki Asuke, Hideharu Takano, Masaki Kanazawa, Mamoru Tsuruya, Masayoshi Yamamoto, Hiroyuki Horii, Shigeyuki Funabiki
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Patent number: 7874634Abstract: An image forming apparatus which forms a halftone image on a print medium (200) using multipass processing of reciprocally scanning a single area by an inkjet head (220) a plurality of number of times, forming dots in one of reciprocal scan operations, and moving the inkjet head (220) to a home position in the other reciprocal scan operation includes a print data generation unit (370) which generates print data of each print-scan operation, a printer engine (180) which prints a halftone image on the basis of the print data generated by the print data generation unit (370), and a sensor (230) which detects the state of printing in up to a print-scan operation immediately preceding a print-scan operation of interest. The print data generation unit (370) corrects print data in synchronism with printing by the printer engine (180) on the basis of the detected printing state.Type: GrantFiled: April 8, 2009Date of Patent: January 25, 2011Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Horii, Hisashi Ishikawa
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Publication number: 20100052545Abstract: A detection apparatus determines whether an output of the light-receiving unit meets a predetermined reference level when the light emission amount of the light-emitting unit is changed, under a condition that the output of the light-receiving unit changes according to a change in a light emission amount of the light-emitting unit. The detection apparatus detects, based on the output from the light-receiving unit, that the light emitted from the light-emitting unit to the light-receiving unit is blocked, under a condition that the light-emitting unit is emitting light based on a light emission amount emitted from the light-emitting unit when it has been determined that the output of the light-receiving unit meets the predetermined reference level.Type: ApplicationFiled: September 2, 2009Publication date: March 4, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Hiroyuki Horii
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Publication number: 20100007901Abstract: An image forming apparatus includes a color converting unit 330 for subjecting the input image data to a color conversion in accordance with ink color and generating a print image 400; a print data generator 370-x for generating print data of each scan corresponding to multiple scans of the print image generated by the color converting unit 330; print controller 380-x for controlling at least one of the color converting unit 330 or print data generator 370-x based upon the input image data 320 or a position on a scanning line of each dot to be printed in the print image 400 generated by the color converting unit 330; and a printer engine 180 for printing on the print medium based upon the print data generated by the print data generator 370-x.Type: ApplicationFiled: July 7, 2009Publication date: January 14, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Hiroyuki Horii, Hisashi Ishikawa
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Publication number: 20090267982Abstract: An image forming apparatus which forms a halftone image on a print medium (200) using multipass processing of reciprocally scanning a single area by an inkjet head (220) a plurality of number of times, forming dots in one of reciprocal scan operations, and moving the inkjet head (220) to a home position in the other reciprocal scan operation includes a print data generation unit (370) which generates print data of each print-scan operation, a printer engine (180) which prints a halftone image on the basis of the print data generated by the print data generation unit (370), and a sensor (230) which detects the state of printing in up to a print-scan operation immediately preceding a print-scan operation of interest. The print data generation unit (370) corrects print data in synchronism with printing by the printer engine (180) on the basis of the detected printing state.Type: ApplicationFiled: April 8, 2009Publication date: October 29, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Hiroyuki Horii, Hisashi Ishikawa
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Publication number: 20090268226Abstract: An image forming apparatus that converts image data into print data to print is provided. The apparatus includes a conversion unit configured to generate first print data and second print data from the image data using an error diffusion method, and a printing unit configured to print the second print data. The conversion unit converts the image data into the first print data using the error diffusion method, generates constraint data specifying the non-print pixels in the first print data as non-print pixels in the second print data, and converts the image data into the plurality of pieces of second print data, each piece of second print data being used in one of the plurality of passes, through an error diffusion method that uses the constraint data. The printing unit forms an image by printing, in each of the plurality of passes, the second print data.Type: ApplicationFiled: April 6, 2009Publication date: October 29, 2009Applicant: CANON KABUSHIKI KAISHAInventor: Hiroyuki Horii
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Publication number: 20090262555Abstract: A current-mode controlled DC-DC converter includes a comparator comparing a first or second current detection signal with a first or second reference current that is based on an error voltage of a voltage detection signal, a pulse generator generating a first pulse signal whose ON time is longer than an interval between when the second current detection signal reaches a minimum value and when the second current detection signal reaches the second reference current, a pulse generator generating a second pulse signal whose ON time is longer than an interval between when the first current detection signal reaches a minimum value and when the first current detection signal reaches the first reference current, the second pulse signal being behind the first pulse signal by a half period, and a PWM circuit generating a first or second PWM signal according to the pulse signal and an output signal from the comparator, thereby turning on/off a switch.Type: ApplicationFiled: October 14, 2008Publication date: October 22, 2009Applicants: Sanken Electric Co., Ltd., Shimane UniversityInventors: Hideki Asuke, Hideharu Takano, Masaki Kanazawa, Mamoru Tsuruya, Masayoshi Yamamoto, Hiroyuki Horii, Shigeyuki Funabiki