Patents by Inventor Akira Hirai

Akira 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).

  • Publication number: 20180091083
    Abstract: In a motor driver of the present invention, voltage and current values measured by a voltage and current detector and a voltage value measured by a voltage detector are determined as first measurement results, in the state of turning on semiconductor switching elements connected between a positive terminal of a capacitor and motor coils. Voltage and current values measured by the voltage and current detector and a voltage value measured by the voltage detector are determined as second measurement results, in the state of, as to a group A, turning on a semiconductor switching element connected between the positive terminal of the capacitor and the motor coil, and as to a group B, turning on semiconductor switching elements connected between a negative terminal of the capacitor and the motor coil. The insulation resistance values are calculated between the motor coils of each group A or B and a ground.
    Type: Application
    Filed: September 26, 2017
    Publication date: March 29, 2018
    Applicant: FANUC CORPORATION
    Inventors: Hiroyasu Satou, Masaya Tateda, Youichirou Ooi, Akira Hirai, Kiichi Inaba
  • Patent number: 9904385
    Abstract: A touch screen panel includes a film substrate defined by a touch active area and a non-touch active area and the touch area is arranged outside the touch active area. The touch screen panel includes a plurality of sensing electrodes arranged in the touch active area on an upper surface and a lower surface of the film substrate, and outer lines arranged in the non-touch active area on the upper and the lower surfaces of the film substrate. The outer lines are connected to the sensing electrodes along one of a first direction and a second direction, and the outer lines include a transparent electrode layer and a plating layer on the transparent electrode layer.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: February 27, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Akira Hirai, Mikiya Itakura, Dong Ho Lee
  • Patent number: 9899954
    Abstract: A motor drive apparatus according to the present invention comprises: an electric shunt which shunts a current flowing through a power line connected to a motor; a first current detection unit and a second detection unit, each disposed on either side of a node shunted by the electric shunt, for detecting the current flowing through the power line; a shunt commanding unit which gives a shunt command to the electric shunt to effect shunting of the current; and a determining unit which determines the presence or absence of a fault in the electric shunt, based on the shunt command and on current values detected by the first current detection unit and the second detection unit.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: February 20, 2018
    Assignee: FANUC CORPORATION
    Inventors: Masaya Tateda, Youichirou Ooi, Akira Hirai, Kiichi Inaba
  • Patent number: 9846190
    Abstract: A motor drive device includes a power source unit rectifying AC voltage to DC voltage and to smooth the DC voltage by a capacitor, a motor drive amplification, a power source voltage measurement unit, an insulation resistance deterioration detection unit having a contact unit connecting one end of the capacitor to the ground and a current detection unit provided between the other end of the capacitor and a motor coil, and detecting a deterioration in an insulation resistance of the motor based on a detected signal obtained from a closed circuit formed by the contact unit, the capacitor, the motor coil, and the ground by using the current detection unit, and a failure detection unit detecting a failure in the insulation resistance deterioration detection unit based on the detected signal in the insulation resistance deterioration detection unit and a voltage value measured by the power source voltage measurement unit.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: December 19, 2017
    Assignee: FANUC CORPORATION
    Inventors: Masaya Tateda, Hiroyasu Sato, Akira Hirai
  • Patent number: 9810950
    Abstract: The present invention provides a method for producing a liquid crystal display device which can produce a liquid crystal display device with favorable voltage holding ratio reliability and reduced image sticking.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: November 7, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroaki Asagi, Isamu Miyake, Akira Hirai
  • Patent number: 9796151
    Abstract: In one aspect, a protective window comprising a first transparent member comprising a polymer; and a protective layer on a first surface of the first transparent member and comprising silsequioxane is provided.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: October 24, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Kap Jo, Akira Hirai, Chung-Soo Ha, Sung-Ki Jung
  • Patent number: 9762171
    Abstract: A motor drive device includes: a converter; a power supply; a plurality of inverter units configured to convert DC to AC to drive a plurality of motors by upper arm switching elements connected between a capacitor and motor coils and lower arm switching elements connected between the capacitor and motor coils; a second switch configured to connect the capacitor to the earth; a current detector configured to measure current flowing between the capacitor and the earth; a voltage detector configured to measure the voltage across the capacitor; and, an insulation resistance detector configured to detect insulation resistance of the multiple motors based on the current and voltage measured in a condition that the switching element to which the motor coil to be measured is connected is turned on and the switching elements to which a motor coil other than the target for measurement is connected are turned off.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: September 12, 2017
    Assignee: FANUC CORPORATION
    Inventors: Masaya Tateda, Hiroyasu Sato, Akira Hirai
  • Patent number: 9733524
    Abstract: A liquid crystal display device (100) includes a first substrate (10) and a second substrate (20) opposing each other, and a liquid crystal layer (30) provided between the first substrate and the second substrate. At least one of the first substrate and the second substrate includes a horizontal alignment film (12, 22) provided on a side closer to the liquid crystal layer. The liquid crystal display device further includes an alignment sustaining layer (40a, 40b) provided between the horizontal alignment film and the liquid crystal layer, the alignment sustaining layer containing a polymerization product of a photopolymerizable compound. The photopolymerizable compound contains an acrylate group or a methacrylate group. The polymerization product in the alignment sustaining layer contains an acrylate group or a methacrylate group as a residue. The horizontal alignment film contains an acrylate group or a methacrylate group.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: August 15, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Isamu Miyake, Koichi Miyachi, Hiroaki Asagi, Akira Hirai
  • Publication number: 20170212393
    Abstract: The present invention provides a method for producing a liquid crystal display device which can produce a liquid crystal display device with favorable voltage holding ratio reliability and reduced image sticking.
    Type: Application
    Filed: July 23, 2015
    Publication date: July 27, 2017
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hiroaki ASAGI, Isamu MIYAKE, Akira HIRAI
  • Patent number: 9716461
    Abstract: A motor drive includes a DC power supply unit for rectifying electric power supplied from an AC power supply using a rectifier and smoothing the electric power using a capacitor; and a plurality of independent voltage measurement circuits for measuring the voltage of the DC power supply unit. The motor drive, which converts a DC voltage into an AC voltage to drive a motor, includes a voltage collection unit for collecting voltage information obtained from the voltage measurement circuits; a normal operation voltage information storage unit for storing a normal operation voltage; and an abnormality determination unit for identifying an intersection voltage of output signals based on voltage values collected by the voltage collection unit, comparing the intersection voltage with the normal operation voltage, and detecting a broken portion owing to entering foreign matter based on the difference between the intersection voltage and the normal operation voltage.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: July 25, 2017
    Assignee: FANUC CORPORATION
    Inventors: Masaya Tateda, Akira Hirai, Kiichi Inaba
  • Publication number: 20170068357
    Abstract: In a flexible touch screen panel, sensing patterns as a touch sensor are formed on the first surface of a flexible thin film substrate and a coated polarizer layer is formed on the second surface of the thin film substrate to secure the flexible characteristic, to reduce the thickness of the touch screen panel, and to improve the visibility of an image. Particularly, the flexible touch screen panel includes a flexible substrate comprising an active region and a non-active region positioned outside the active region, sensing patterns formed over the active region of a first surface of the substrate, conductive lines formed over the non-active region of the first surface of the substrate and connected to the sensing patterns, and a coated polarizer layer formed over a second surface of the substrate.
    Type: Application
    Filed: November 18, 2016
    Publication date: March 9, 2017
    Inventors: Sung-Ku Kang, Tae-Hyeog Jung, Hak-Sun Kim, Akira Hirai
  • Publication number: 20170063279
    Abstract: A motor drive apparatus according to the present invention comprises: an electric shunt which shunts a current flowing through a power line connected to a motor; a first current detection unit and a second detection unit, each disposed on either side of a node shunted by the electric shunt, for detecting the current flowing through the power line; a shunt commanding unit which gives a shunt command to the electric shunt to effect shunting of the current; and a determining unit which determines the presence or absence of a fault in the electric shunt, based on the shunt command and on current values detected by the first current detection unit and the second detection unit.
    Type: Application
    Filed: August 19, 2016
    Publication date: March 2, 2017
    Applicant: FANUC CORPORATION
    Inventors: Masaya Tateda, Youichirou Ooi, Akira Hirai, Kiichi Inaba
  • Publication number: 20170033723
    Abstract: A motor drive includes a DC power supply unit for rectifying electric power supplied from an AC power supply using a rectifier and smoothing the electric power using a capacitor; and a plurality of independent voltage measurement circuits for measuring the voltage of the DC power supply unit. The motor drive, which converts a DC voltage into an AC voltage to drive a motor, includes a voltage collection unit for collecting voltage information obtained from the voltage measurement circuits; a normal operation voltage information storage unit for storing a normal operation voltage; and an abnormality determination unit for identifying an intersection voltage of output signals based on voltage values collected by the voltage collection unit, comparing the intersection voltage with the normal operation voltage, and detecting a broken portion owing to entering foreign matter based on the difference between the intersection voltage and the normal operation voltage.
    Type: Application
    Filed: July 27, 2016
    Publication date: February 2, 2017
    Applicant: FANUC CORPORATION
    Inventors: Masaya Tateda, Akira Hirai, Kiichi Inaba
  • Patent number: 9488869
    Abstract: The present invention provides a liquid crystal display device that sufficiently reduces image sticking, by forming a polymer layer with stable alignment control appropriately. In a method for manufacturing the liquid crystal display device of the present invention, base film forming conditions are different between the step of forming a base film on a substrate including an active element and the step of forming a base film on a substrate different from the substrate including an active element.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: November 8, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akira Hirai, Hiroaki Asagi, Isamu Miyake
  • Publication number: 20160324038
    Abstract: A control method executed by an information processing system that includes a plurality of electronic devices arranged side by side in a single direction in a common housing and having temperature sensors and includes a managing device coupled to the plurality of electronic devices, the control method includes activating an electronic device among the plurality of electronic devices based on a predetermined order; receiving temperature information from the temperature sensors included in the plurality of electronic devices, the temperature information indicating temperatures of the plurality of electronic devices that are measured when any of the plurality of electronic devices operates and another one or more electronic devices excluding the operating electronic device do not operate; and identifying positions of the plurality of electronic devices arranged in the common housing, based on amounts of changes in temperatures of the plurality of electronic devices calculated using the temperature information.
    Type: Application
    Filed: March 16, 2016
    Publication date: November 3, 2016
    Applicant: FUJITSU LIMITED
    Inventor: Akira HIRAI
  • Publication number: 20160259578
    Abstract: A management device is configured to manage first and second information processing devices. The management device performs movement control to move an operating virtual machine set on the first information processing device to the second information processing device, and conducts performance measurement of the first information processing device in a state where the operating virtual machine set on the first information processing device is moved from the first information processing device to the second information processing device.
    Type: Application
    Filed: January 26, 2016
    Publication date: September 8, 2016
    Applicant: FUJITSU LIMITED
    Inventor: Akira Hirai
  • Publication number: 20160224143
    Abstract: A touch screen panel includes a film substrate defined by a touch active area and a non-touch active area and the touch area is arranged outside the touch active area. The touch screen panel includes a plurality of sensing electrodes arranged in the touch active area on an upper surface and a lower surface of the film substrate, and outer lines arranged in the non-touch active area on the upper and the lower surfaces of the film substrate. The outer lines are connected to the sensing electrodes along one of a first direction and a second direction, and the outer lines include a transparent electrode layer and a plating layer on the transparent electrode layer.
    Type: Application
    Filed: April 12, 2016
    Publication date: August 4, 2016
    Inventors: Akira HIRAI, Mikiya ITAKURA, Dong Ho LEE
  • Patent number: 9404974
    Abstract: A motor drive device of the present invention includes: a rectification circuit configured to rectify an AC voltage; a power source unit configured to smooth a DC voltage by a capacitor; an inverter unit configured to drive a motor by converting a DC voltage into an AC voltage; a current detection unit configured to measure a current flowing through a resistor which is connected to a coil of the motor and the capacitor; a voltage detection unit configured to measure a value of a voltage across the capacitor; a second switch that grounds the capacitor; and an insulation resistance detection unit configured to detect an insulation resistance value of a motor by using two sets of a current value and a voltage value measured in two states where the second switch is turned off and turned on.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: August 2, 2016
    Assignee: FANUC CORPORATION
    Inventors: Hiroyasu Sato, Masaya Tateda, Akira Hirai
  • Patent number: 9259898
    Abstract: In one aspect, a transparent laminate, including a transparent material layer, a transparent high-elasticity layer laminated on both sides of the transparent material layer and having Young's modulus of less than or equal to about 10 MPa, and a transparent high-hardness layer sequentially laminated on the transparent high-elasticity layer that is laminated on both sides of the transparent material layer and having a surface hardness of greater than or equal to a pencil hardness of about 6H is provided.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: February 16, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Akira Hirai, Dong-Ho Lee, Kyu-Taek Lee, Sang-Woo Han, Sang-Gu Kim
  • Patent number: 9250656
    Abstract: A cover window for a display device includes a display area and a non-display area, the cover window including a frame member disposed corresponding to the non-display area, and a protective member disposed on the frame member corresponding to the display area and the non-display area.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: February 2, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Akira Hirai, Kwan-Young Han, Hyoung-Suk Roh