Patents by Inventor Shinji Nakagawa

Shinji Nakagawa 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).

  • Publication number: 20180285183
    Abstract: An object of the invention is to provide an abnormality detection device that can detect a processing abnormality of various types of software. The abnormality detection device according to the invention divides an output data series which is output by software into one or more clusters, determines that the output data included in any cluster is normal, and determines that the output data not included in any cluster is abnormal.
    Type: Application
    Filed: October 9, 2015
    Publication date: October 4, 2018
    Inventor: Shinji NAKAGAWA
  • Patent number: 10012160
    Abstract: It is possible to prevent the stability of an engine from deteriorating even when degrees of changes over time of injection characteristics are different in each fuel injection valve. An inter-cylinder air-fuel ratio variation detection unit 1100 calculates an air-fuel ratio variation index (Ind_imb) which indicates a degree of variation in an air-fuel ratio between cylinders from an exhaust air-fuel ratio, engine rotation speed, or the like. Unlike in a case where the air-fuel ratio variation index (Ind_imb) is lower than a set value, when the air-fuel ratio variation index (Ind_imb) is higher than the set value, a fuel injection pulse width limitation unit 2100 sets a (allowable) minimum value (Min_TI) of a fuel injection pulse width so as to be greater. In addition, a fuel injection pulse width calculation unit 3100 calculates fuel injection pulse widths (TI_1, TI_2, TI_3, and TI_4) of cylinders so as not to be lower than the minimum value (Min_TI).
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: July 3, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Shinji Nakagawa, Akihito Numata, Eisaku Fukuchi
  • Publication number: 20180171892
    Abstract: An object of the present invention is to optimally control a recirculation amount of exhaust gas flowing to an engine that includes an exhaust heat recovery device in a main exhaust pipe thereof and performs exhaust gas recirculation from downstream of the exhaust heat recovery device. An engine control device includes an exhaust heat recovery device, an exhaust gas recirculation pipe, an exhaust gas temperature acquisition unit, and an exhaust gas recirculation amount control unit. The exhaust heat recovery device is provided in a main exhaust pipe of an engine and recovers heat from exhaust gas. The exhaust gas recirculation pipe is branched from the main exhaust pipe downstream of the exhaust heat recovery device and recirculates exhaust gas to the engine. The exhaust gas temperature acquisition unit acquires an exhaust gas temperature downstream of the exhaust heat recovery device.
    Type: Application
    Filed: May 11, 2016
    Publication date: June 21, 2018
    Inventors: Shinji NAKAGAWA, Minoru OOSUGA
  • Patent number: 9975536
    Abstract: When a parking brake mechanism is in a braking state and an operation switch is switched to a braking-released state, a control unit of an electric vehicle brings a parking brake mechanism into a braking-released state on the condition that the control unit detects using a stop lamp switch that the brake pedal is not depressed and detects that the shift range of the shift lever is a P range.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: May 22, 2018
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Takayuki Wako, Shinji Nakagawa, Tomohiro Kawasaki, Mutsuhiro Naka, Naoki Yamamoto, Kazunori Hayakawa, Naoki Watanabe
  • Publication number: 20170314482
    Abstract: The present invention suppresses the worsening of stability due to a variation in EGR amounts between cylinders in a spark ignition engine. An engine control device for controlling a spark ignition engine equipped with an EGR means for recirculating exhaust gas in a combustion chamber and an air-fuel-ratio detection means for detecting the air-fuel ratio in each cylinder, the engine control device being characterized by being equipped with a means for changing the parameters for ignition control of a rich cylinder, when the air-fuel ratio of cylinders varies and there are richer cylinders and leaner cylinders relative to a prescribed air-fuel ratio during the execution of exhaust gas recirculation by the EGR means.
    Type: Application
    Filed: September 4, 2015
    Publication date: November 2, 2017
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Shinji NAKAGAWA, Toshio HORI
  • Publication number: 20170284268
    Abstract: Provided is an engine control apparatus capable of detecting degradation in particulate filter performance. An input unit receives a first signal indicating an exhaust gas state (Tpf_2) inside or downstream of a particulate filter that traps particulate substance contained in engine exhaust gas. A determination unit 16a determines whether the particulate filter is degraded on the basis of the exhaust gas state (Tpf_2) indicated by the first signal in a period (fFC=1) in which fuel supply to the engine is blocked.
    Type: Application
    Filed: August 5, 2015
    Publication date: October 5, 2017
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Shinji NAKAGAWA, Toshio HORI
  • Patent number: 9767742
    Abstract: There is provided an image display device, in which a pixel includes sub-pixels of four or more colors that include a color in addition to the three primary colors, and which can display a high-quality image in which false colors or artifacts are suppressed. The image display device includes a pixel area in which a plurality of pixels P are arranged in a matrix shape, and each of the pixels P includes m (m is an integer which is equal to or greater than 4) sub-pixels SP. When it is assumed that the colors of the m sub-pixels SP included in one pixel are C1, C2, . . . , and Cm, the m sub-pixels SP which are sequentially arrayed from an arbitrary position include all of the colors of C1, C2, . . . , and Cm in both the vertical direction and the horizontal direction in the pixel area.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: September 19, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shinji Nakagawa, Hidekazu Miyata, Hiroyuki Furukawa, Kazuyoshi Yoshiyama, Yasuhiro Yoshida, Toshihiro Yanagi, Taketoshi Nakano, Asahi Yamato, Ken Inada
  • Publication number: 20170211497
    Abstract: The purpose of the present invention is to detect deterioration of dead time characteristics of an air-fuel ratio sensor with high accuracy without causing running performance and exhaust performance to worsen. The present invention provides a control device for an engine, characterized by being equipped with: a means for detecting an air-fuel ratio; a means for changing the air-fuel ratio in a predetermined cycle; and a means for sending a notification of an abnormality in the air-fuel ratio detection means or causing at least a portion of the engine control to run in a fail-safe mode when the amplitude of an output signal of the air-fuel ratio detection means at a predetermined frequency is within a predetermined range and the required time or required angle to arrive at a predetermined value of the output signal of the air-fuel ratio detection means from a reference position or reference time point of an engine-related parameter is equal to a predetermined value or higher.
    Type: Application
    Filed: May 7, 2015
    Publication date: July 27, 2017
    Inventors: Shinji NAKAGAWA, Toshio HORI, Akihito NUMATA
  • Publication number: 20170197605
    Abstract: When a parking brake mechanism is in a braking state and an operation switch is switched to a braking-released state, a control unit of an electric vehicle brings a parking brake mechanism into a braking-released state on the condition that the control unit detects using a stop lamp switch that the brake pedal is not depressed and detects that the shift range of the shift lever is a P range.
    Type: Application
    Filed: March 28, 2017
    Publication date: July 13, 2017
    Applicant: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Takayuki WAKO, Shinji NAKAGAWA, Tomohiro KAWASAKI, Mutsuhiro NAKA, Naoki YAMAMOTO, Kazunori HAYAKAWA, Naoki WATANABE
  • Publication number: 20170151601
    Abstract: The present invention has the object of providing a metal showerhead lighter than previous, at a low cost. A showerhead 3 furnished with an outer cylinder 31 in which a metal plate is plastically deformed and formed into a cylindrical shape in which the base end portion thereof is left open; and a water conduit member 32 which is inserted from the open end of the base end portion side into the outer cylinder to supply hot or cold water supplied from a hose into outer cylinder 31; whereby a gripping portion 311 for holding outer cylinder 31 by hand is provided on the base end portion of outer cylinder 31, and a spray portion 33 is provided in which multiple spray holes 33b are formed to spray hot or cold water supplied by water conduit member 32 to the front end portion side of outer cylinder 31.
    Type: Application
    Filed: February 10, 2017
    Publication date: June 1, 2017
    Applicant: TOTO LTD.
    Inventors: Hideyasu HONDA, Nobuyasu REISEN, Shinji NAKAGAWA, Kohei SATO
  • Patent number: 9583054
    Abstract: A signal conversion circuit (20) of a multiprimary display device (100) includes a low-range multiprimary signal generation section (21), a high-range luminance signal generation section (22), and a rendering process section (23). The low-range multiprimary signal generation section includes a first filter section (21a) which is capable of extracting a low-range component from an input image signal and a multiprimary conversion section (21b), whereas the high-range luminance signal generation section includes a luminance conversion section (22a) and a second filter section (22b) which extracts a high-range component of a luminance signal. The signal conversion circuit further includes a chromaticity conversion section (24) and a luminance/chromaticity change detection section (25).
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: February 28, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shinji Nakagawa, Hiroyuki Furukawa, Kazuyoshi Yoshiyama, Yasuhiro Yoshida
  • Patent number: 9495894
    Abstract: An embodiment of the present invention is directed to reducing a memory capacity required for saving compensating data (data used for compensating variations and the like in characteristic of a drive transistor) compared to conventional examples, in a display device. An organic EL display device using an oxide TFT for a drive transistor is provided with: a low pass filter for extracting low frequency component data from pixel current data as data of a drive current of the drive transistor; a first computing portion for obtaining high frequency component data by obtaining a difference between the pixel current data and the low frequency component data; a down-sampling portion for extracting data from the low frequency component data at predetermined sampling intervals; and a high frequency signal compression processing portion for extracting only high amplitude data out of the high frequency component data.
    Type: Grant
    Filed: December 25, 2013
    Date of Patent: November 15, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shigetsugu Yamanaka, Shinji Nakagawa, Hiroyuki Furukawa, Yoshifumi Ohta
  • Publication number: 20160322009
    Abstract: There is provided an image display device, in which a pixel includes sub-pixels of four or more colors that include a color in addition to the three primary colors, and which can display a high-quality image in which false colors or artifacts are suppressed. The image display device includes a pixel area in which a plurality of pixels P are arranged in a matrix shape, and each of the pixels P includes m (m is an integer which is equal to or greater than 4) sub-pixels SP. When it is assumed that the colors of the m sub-pixels SP included in one pixel are C1, C2, . . . , and Cm, the m sub-pixels SP which are sequentially arrayed from an arbitrary position include all of the colors of C1, C2, . . . , and Cm in both the vertical direction and the horizontal direction in the pixel area.
    Type: Application
    Filed: July 12, 2016
    Publication date: November 3, 2016
    Inventors: Shinji NAKAGAWA, Hidekazu MIYATA, Hiroyuki FURUKAWA, Kazuyoshi YOSHIYAMA, Yasuhiro YOSHIDA, Toshihiro YANAGI, Taketoshi NAKANO, Asahi YAMATO, Ken INADA
  • Patent number: 9429089
    Abstract: A control device of an engine includes means for detecting an efficiency of the engine, means for detecting a combustion stability of the engine, means for detecting an HC discharged quantity, and means for executing a notification. The notification is executed when the efficiency of the engine and the combustion stability of the engine do not fall in a predetermined region A1. The predetermined region A1 is a range of the efficiency of the engine and the combustion stability of the engine. The HC discharged quantity at the time of engine start is a predetermined value or less.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: August 30, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Shinji Nakagawa, Akihito Numata, Eisaku Fukuchi
  • Publication number: 20160237937
    Abstract: An object of the invention is to provide a drive device of a fuel injection device which can increase the accuracy in an injected fuel injection amount by combining the fuel injections from a plurality of injection pulse widths. In the drive device of the fuel injection device which has a function of driving the fuel injection device such that the fuel injection is performed plural times in one combustion cycle, the fuel injection device is driven such that a fuel injection at a target opening level in which a valve element or a movable element of the fuel injection device reaches a regulation member and a fuel injection at an intermediate opening level in which the valve element does not reach the regulation member are included in the plural times of division injections performed in one combustion cycle.
    Type: Application
    Filed: June 16, 2014
    Publication date: August 18, 2016
    Inventors: Ryo KUSAKABE, Toshihiro AONO, Motoyuki ABE, Takuya MAYUZUMI, Masahiro TOYOHARA, Takashi OKAMOTO, Osamu MUKAIHARA, Shinji NAKAGAWA, Yusuke KIHARA
  • Patent number: 9418619
    Abstract: There is provided an image display device, in which a pixel includes sub-pixels of four or more colors that include a color in addition to the three primary colors, and which can display a high-quality image in which false colors or artifacts are suppressed. The image display device includes a pixel area in which a plurality of pixels P are arranged in a matrix shape, and each of the pixels P includes m (m is an integer which is equal to or greater than 4) sub-pixels SP. When it is assumed that the colors of the m sub-pixels SP included in one pixel are C1, C2, . . . , and Cm, the m sub-pixels SP which are sequentially arrayed from an arbitrary position include all of the colors of C1, C2, . . . , and Cm in both the vertical direction and the horizontal direction in the pixel area.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: August 16, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shinji Nakagawa, Hidekazu Miyata, Hiroyuki Furukawa, Kazuyoshi Yoshiyama, Yasuhiro Yoshida, Toshihiro Yanagi, Taketoshi Nakano, Asahi Yamato, Ken Inada
  • Patent number: 9311841
    Abstract: This multi-primary-color display device (100) includes a multi-primary-color display panel (10) and a signal converter (20). The display device assigns a plurality of subpixels that form each pixel to a plurality of virtual pixels and is able to conduct a display operation using each of the plurality of virtual pixels as a minimum color display unit. The signal converter (20) includes: a low-frequency multi-primary-color signal generating section (21) which generates a low-frequency multi-primary-color signal; a high-frequency luminance signal generating section (22) which generates a high-frequency luminance signal; and a rendering processing section (23) which performs rendering processing on the plurality of virtual pixels based on the low-frequency multi-primary-color signal and the high-frequency luminance signal.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: April 12, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shinji Nakagawa, Hiroyuki Furukawa, Kazuyoshi Yoshiyama, Yasuhiro Yoshida
  • Publication number: 20150369152
    Abstract: It is possible to prevent the stability of an engine from deteriorating even when degrees of changes over time of injection characteristics are different in each fuel injection valve. An inter-cylinder air-fuel ratio variation detection unit 1100 calculates an air-fuel ratio variation index (Ind_imb) which indicates a degree of variation in an air-fuel ratio between cylinders from an exhaust air-fuel ratio, engine rotation speed, or the like. Unlike in a case where the air-fuel ratio variation index (Ind_imb) is lower than a set value, when the air-fuel ratio variation index (Ind_imb) is higher than the set value, a fuel injection pulse width limitation unit 2100 sets a (allowable) minimum value (Min_TI) of a fuel injection pulse width so as to be greater. In addition, a fuel injection pulse width calculation unit 3100 calculates fuel injection pulse widths (TI_1, TI_2, TI_3, and TI_4) of cylinders so as not to be lower than the minimum value (Min_TI).
    Type: Application
    Filed: January 10, 2014
    Publication date: December 24, 2015
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Shinji NAKAGAWA, Akihito NUMATA, Eisaku FUKUCHI
  • Publication number: 20150356899
    Abstract: An embodiment of the present invention is directed to reducing a memory capacity required for saving compensating data (data used for compensating variations and the like in characteristic of a drive transistor) compared to conventional examples, in a display device. An organic EL display device using an oxide TFT for a drive transistor is provided with: a low pass filter for extracting low frequency component data from pixel current data as data of a drive current of the drive transistor; a first computing portion for obtaining high frequency component data by obtaining a difference between the pixel current data and the low frequency component data; a down-sampling portion for extracting data from the low frequency component data at predetermined sampling intervals; and a high frequency signal compression processing portion for extracting only high amplitude data out of the high frequency component data.
    Type: Application
    Filed: December 25, 2013
    Publication date: December 10, 2015
    Inventors: Shigetsugu YAMANAKA, Shinji NAKAGAWA, Hiroyuki FURUKAWA, Yoshifumi OHTA
  • Patent number: 9177527
    Abstract: A multiple primary color display device includes a plurality of pixels located in a matrix including a plurality of rows and columns. The pixels are each formed of at least four sub pixels for displaying different primary colors, which can be sorted into n number of virtual pixels, and use each of the n number of virtual pixels as a minimum color display unit for providing display. The sub pixels which form each of the virtual pixels include a sub pixel common to another of the virtual pixels. When a line having a width corresponding to the n number of virtual pixels is displayed, two sub pixels which are located at both of two ends, in a width direction, of the line and display a certain identical primary color to each other have a luminance lower than the original luminance that the two sub pixels.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: November 3, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shinji Nakagawa, Kazuyoshi Yoshiyama, Hiroyuki Furukawa, Naoko Kondoh, Yasuhiro Yoshida