Patents by Inventor Hiroshi Iizuka

Hiroshi Iizuka 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).

  • Patent number: 9352618
    Abstract: A pneumatic tire has a plurality of circumferential main grooves extending in a tire circumferential direction and a plurality of ribs partitioned by the circumferential main grooves in a tread portion. When viewing a cross-section from a tire meridian direction a contact patch of the center ribs is formed from a smooth curved line forming a convex on an outer side in a tire radial direction and a contact patch of the shoulder rib is formed from a smooth curved line forming a convex on an inner side in the tire radial direction. The curved line of the center ribs and the curved line of the shoulder rib have a point of intersection. A distance between an extended line of the curved line of the center ribs and the curved line of the shoulder rib increases from the point of intersection towards an outer side in a tire width direction.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: May 31, 2016
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Takayuki Suzuki, Hiroshi Iizuka, Yoshihisa Inoue
  • Publication number: 20160142146
    Abstract: A transmission apparatus includes: a module configured to receive and transmit data externally, the data received and to be transmitted being transferred via an interface internally; a framer configured to process transmission and reception of the data processed by the module; a transmission channel on which predetermined data is transmitted and received to and from the framer; and a controller configured to determine a combination of setting values for transmission and reception in accordance with a surrounding environment of the transmission channel, based on an error rate when the predetermined data is transmitted and received for each combination of setting values for transmission and reception on the transmission channel, and to perform setting for transmission and reception via the interface, based on the determined combination of setting values for transmission and reception.
    Type: Application
    Filed: October 23, 2015
    Publication date: May 19, 2016
    Applicant: FUJITSU LIMITED
    Inventor: Hiroshi IIZUKA
  • Publication number: 20160126268
    Abstract: Certain embodiments provide a solid-state imaging device including: a semiconductor substrate having a top surface on which a light receiving section that receives light is provided, the semiconductor substrate having a through hole which is provided in a part of the semiconductor substrate; an electrode pad provided on the top surface side of the semiconductor substrate including an area right above the through hole to be in contact with the first wiring, the electrode pad having a slit between the area right above the through hole and the first wiring; an insulating film provided on a side surface of the through hole; and a second wiring provided on the insulating film to be in contact with the electrode pad.
    Type: Application
    Filed: September 2, 2015
    Publication date: May 5, 2016
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hiroki INOUE, Hiroshi Iizuka
  • Patent number: 9220137
    Abstract: A driver circuit is provided which comprises a series-connected unit having a light-emitting element and a current limiting inductor directly connected to the light-emitting element, a regenerative diode which is connected in parallel to the series-connected unit and which regenerates energy stored in the current limiting inductor, a transistor which controls a current flowing through the light-emitting element and the current limiting inductor, and a controller which controls an operation of the transistor, wherein the controller controls the transistor according to a voltage value of a power supply applied to the light-emitting element.
    Type: Grant
    Filed: March 2, 2014
    Date of Patent: December 22, 2015
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Yoshio Fujimura, Hiroshi Iizuka, Kazunari Kushiyama, Koudai Nakamura, Yuusuke Nishizaki, Kenpei En
  • Patent number: 9191119
    Abstract: An optical transmission apparatus receives an optical signal of an optical wavelength. The optical transmission apparatus has a variable wavelength filter, a neighboring frequency detection unit, and an ADC/DSP. The variable wavelength filter detects a neighboring of another optical transmission apparatus that receives an optical signal of a wavelength different from the wavelength. The neighboring frequency detection unit determines whether or not a second frequency supported by the another optical transmission apparatus where a neighboring has been detected by the variable wavelength filter is different from a first frequency supported by the optical transmission apparatus. The ADC/DSP changes a parameter for removing a phase noise from the optical signal of the wavelength according to a difference between the first frequency and the second frequency when it is determined that the second frequency is different from the first frequency.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: November 17, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Hisayuki Ojima, Hiroshi Iizuka
  • Publication number: 20150289355
    Abstract: A high frequency power supply device and power supplying method are disclosed, which can rapidly and accurately control power used for generation of plasmas. The device includes a first high frequency power supply, providing power at frequency f1, and a second high frequency power supply providing power at frequency f2 (f1>f2). The first power supply includes: a first high frequency oscillator, which excites the high frequency power at the first frequency and has a variable frequency; a first power amplification block, which amplifies the power of the high frequency oscillator; a heterodyne detection block, which performs heterodyne detection of a reflected wave; and a first control block, which receives a signal after detection of the heterodyne detection block and a traveling wave signal, and controls an oscillating frequency of the first high frequency oscillating block and an output of the first power amplification block.
    Type: Application
    Filed: June 19, 2015
    Publication date: October 8, 2015
    Inventors: Eiich Hayano, Takeshi Nakamura, Yasunori Maekawa, Hiroshi Iizuka, Jinyuan Chen
  • Patent number: 9071354
    Abstract: An optical receiving apparatus includes: a compensator configured to compensate an amount of change in a characteristic; a controller configured to obtain, based on a first amount of change in the characteristic with respect to a first optical signal with a first wavelength, the first wavelength, and a wavelength characteristic in the characteristic, a second amount of change in the characteristic made when a second optical signal with a second wavelength is propagated in an optical path, the second wavelength being different from the first wavelength, and obtain a compensation amount based on the second amount of change; and a first setting unit configured to set the compensation amount for the compensator so that the compensator compensates the amount of change in the characteristic.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: June 30, 2015
    Assignee: FUJITSU LIMITED
    Inventor: Hiroshi Iizuka
  • Patent number: 9027616
    Abstract: An object of the invention is to provide a tire tube which has excellent air impermeability and such excellent durability that the occurrence of cracks in the tube main body is prevented in a contact surface between the tube main body and an inner circumferential surface of the tire. The tire tube of the invention includes a tube main body having a multilayer structure in which at least one rubber layer and at least one thermoplastic resin layer made of a thermoplastic resin or a thermoplastic elastomer composition obtained by blending an elastomer in a thermoplastic resin are laminated together. In at least a region where the tube main body is in contact with the inner circumferential surface of the tire tread part, the rubber layer is placed as the outermost layer of the multilayer structure, and the thermoplastic resin layer is placed inside the outermost layer.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: May 12, 2015
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Hiroshi Iizuka
  • Publication number: 20140369406
    Abstract: An image compression circuit includes: a transform section configured to transform a plurality of pieces of pixel data into a plurality of pieces of coefficient data; and a quantization section configured to obtain a quantization parameter based on a predetermined number of pieces of the coefficient data, and to quantize the predetermined number of pieces of the coefficient data with use of the quantization parameter.
    Type: Application
    Filed: May 28, 2014
    Publication date: December 18, 2014
    Applicant: SONY CORPORATION
    Inventors: Hiroshi Iizuka, Hidekazu Kikuchi
  • Publication number: 20140361092
    Abstract: A card control unit for controlling a line card includes a detecting section, a collecting section, and an estimating section. The detecting section detects mounting of a module into a mounting port in the communication card equipped with multiple cages that each have a mounting port into which a module is removably mounted. When mounting of a module has been detected, the collecting section collects an environmental temperature around a mounting port into which the module has been mounted, a power consumption and specified temperature of the module, and thermal resistance information of a cage mounted with the module. The estimating section estimates an environmental temperature after activation of the module on the basis of the collected environmental temperature, power consumption, specified temperature, and thermal resistance information before the module of which the mounting has been detected is activated.
    Type: Application
    Filed: May 20, 2014
    Publication date: December 11, 2014
    Applicant: FUJITSU LIMITED
    Inventor: Hiroshi Iizuka
  • Publication number: 20140314427
    Abstract: An optical transmission apparatus receives an optical signal of an optical wavelength. The optical transmission apparatus has a variable wavelength filter, a neighboring frequency detection unit, and an ADC/DSP. The variable wavelength filter detects a neighboring of another optical transmission apparatus that receives an optical signal of a wavelength different from the wavelength. The neighboring frequency detection unit determines whether or not a second frequency supported by the another optical transmission apparatus where a neighboring has been detected by the variable wavelength filter is different from a first frequency supported by the optical transmission apparatus. The ADC/DSP changes a parameter for removing a phase noise from the optical signal of the wavelength according to a difference between the first frequency and the second frequency when it is determined that the second frequency is different from the first frequency.
    Type: Application
    Filed: March 28, 2014
    Publication date: October 23, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Hisayuki OJIMA, Hiroshi IIZUKA
  • Publication number: 20140175994
    Abstract: A driver circuit is provided which comprises a series-connected unit having a light-emitting element and a current limiting inductor directly connected to the light-emitting element, a regenerative diode which is connected in parallel to the series-connected unit and which regenerates energy stored in the current limiting inductor, a transistor which controls a current flowing through the light-emitting element and the current limiting inductor, and a controller which controls an operation of the transistor, wherein the controller controls the transistor according to a voltage value of a power supply applied to the light-emitting element.
    Type: Application
    Filed: March 2, 2014
    Publication date: June 26, 2014
    Applicant: Semiconductor Components Industries, LLC
    Inventors: Yoshio Fujimura, Hiroshi Iizuka, Kazunari Kushiyama, Koudai Nakamura, Yuusuke Nishizaki, Kenpei En
  • Patent number: 8728353
    Abstract: An electrically conductive composition capable of making specific volume resistivity control easier, is a carbonaceous material produced by burning plant material including soybean hulls, rapeseed meal, sesame meal, cotton seed meal, cotton hulls, rice hulls, rice bran, soybean chaffs, rice straws, cereal hulls or the like by adjusting any of the carbon content, burning temperature and median diameter. The burned and carbonized plant material is ground and sieved to give a median diameter of approx. 80 ?m or below. The burned plant material is obtained by burning at a temperature of 700° C. or higher.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: May 20, 2014
    Assignee: Asahi Organic Chemicals Industry Co., Ltd.
    Inventors: Hiroyuki Gotou, Go Shinohara, Noriyasu Kuno, Hiroshi Iizuka, Takehiko Takahashi, Takeshi Takahashi
  • Patent number: 8665922
    Abstract: A driver circuit is provided which comprises a series-connected unit having a light-emitting element and a current limiting inductor directly connected to the light-emitting element, a regenerative diode which is connected in parallel to the series-connected unit and which regenerates energy stored in the current limiting inductor, a transistor which controls a current flowing through the light-emitting element and the current limiting inductor, and a controller which controls an operation of the transistor, wherein the controller controls the transistor according to a voltage value of a power supply applied to the light-emitting element.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: March 4, 2014
    Assignees: Sanyo Electric Co., Ltd., Sanyo Semiconductor Co., Ltd.
    Inventors: Yoshio Fujimura, Hiroshi Iizuka, Kazunari Kushiyama, Koudai Nakamura, Yuusuke Nishizaki, Kenpei En
  • Publication number: 20140055473
    Abstract: There is an image data processing circuit including a memory storing input image data, the input image data being limited to a specific number of colors or to a specific image range, and a correction processing part replacing, when a predetermined tone change is present between a pixel in image data previous by one frame whose data is stored by the memory and a pixel in image data in a current frame whose data is input, a relevant pixel in the current frame with a color of a specific tone. The memory is built in an integrated circuit included in the correction processing part.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 27, 2014
    Applicant: SONY CORPORATION
    Inventors: Hidekazu Kikuchi, Takayuki Mogi, Atsuhiro Naka, Hiroshi Iizuka
  • Publication number: 20140023360
    Abstract: An optical receiving apparatus includes: a compensator configured to compensate an amount of change in a characteristic; a controller configured to obtain, based on a first amount of change in the characteristic with respect to a first optical signal with a first wavelength, the first wavelength, and a wavelength characteristic in the characteristic, a second amount of change in the characteristic made when a second optical signal with a second wavelength is propagated in an optical path, the second wavelength being different from the first wavelength, and obtain a compensation amount based on the second amount of change; and a first setting unit configured to set the compensation amount for the compensator so that the compensator compensates the amount of change in the characteristic.
    Type: Application
    Filed: June 18, 2013
    Publication date: January 23, 2014
    Inventor: Hiroshi IIZUKA
  • Patent number: 8559815
    Abstract: An optical transmission apparatus includes a non-reciprocal device including first to second ports, an optical signal input from the first port being provided to the second port, an optical signal input from the second port being provided to the first port, a dispersion compensator that is coupled to the first port of the non-reciprocal device and that conducts given processing to an optical signal input from the first port of the non-reciprocal device to provide the optical signal subjected to the given processing to the second port of the non-reciprocal device, a first monitor, a second monitor, and a fault determination device that compares a value monitored by the first monitor with a value monitored by the second monitor to determine one of a connection failure, at least at one of the first port, the second port, of the non-reciprocal device and a connection state of the dispersion compensator.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: October 15, 2013
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Iizuka, Tsukasa Takahashi
  • Patent number: 8548321
    Abstract: In an optical transmission apparatus, a unit includes a first connection section, a second connection section, a branching section, a first detection section, and a second detection section. The first connection section connects to a first component. The second connection section connects to a second component. The branching section is disposed at a preceding stage of the second connection section and outputs signal light to the first component through the first connection section. The first detection section determines whether the first component receives the signal light output from the branching section. The second detection section is disposed at a subsequent stage of the second connection section and detects the signal light.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: October 1, 2013
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Iizuka, Takeshi Sakamoto
  • Publication number: 20130181570
    Abstract: A rotor (4) of an induction motor (1) rotatably disposed inside a hollow portion (3) of a stator (2) of the induction motor (1) and rotating under a magnetic force from a magnetic field formed inside the hollow portion (3) by the stator (2). The rotor (4) includes a pair of annular conductors (10, 10), and a plurality of bar-like conductors (11) connected between the pair of annular conductors (10, 10) and configured to form a basket shape along with the pair of annular conductors (10, 10). The annular conductors (10, 10) and the bar-like conductors (11) are respectively formed by a compound material with a conductive core conductor (12) and a carbon nanotube structure (15) attached to an outer periphery of the core conductor (12) in an electric contact state.
    Type: Application
    Filed: May 25, 2011
    Publication date: July 18, 2013
    Applicant: YAZAKI CORPORATION
    Inventors: Hiroshi Iizuka, Makoto Katsumata, Tsutomu Saigou, Satoru Yoshinaga
  • Publication number: 20130153828
    Abstract: PROBLEM To effectively utilize plant residue such as soybean hulls, rapeseed meal, rice bran, rice husk, and cacao husk. SOLUTION When forming sheet material from a mixture of burned plant material and fibrous material by a wet-process sheet production method, the burned plant material is one of a burned material of rice husk, a burned material of rice bran, a burned material of soybean hulls, a burned material of inner skin of peanut, a burned material of conduit side wall portion of seed plant or a burned material of cacao husk, and the fibrous material is one of a organic fiber derived from thermoplastic resin including polyolefin consisting of polyethylene and polypropylene, polyester, polyamide, vinyl chloride, polyacrylonitrile, polyvinyl chloride and aramid, a fiber derived from thermosetting resin including kynol, a natural fiber including cotton, wool, etc.
    Type: Application
    Filed: August 29, 2011
    Publication date: June 20, 2013
    Applicants: THE NISSHIN OILLIO GROUP, LTD., ASAHI ORGANIC CHEMICALS INDUSTRY CO., LTD.
    Inventors: Toshihiko Kaneiwa, Takehiko Takahashi, Takeshi Takahashi, Hiroyuki Gotou, Go Shinohara, Noriyasu Kuno, Hiroshi Iizuka