Patents by Inventor Junichi Ikeda

Junichi Ikeda 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: 8700866
    Abstract: A data transfer apparatus includes: a first port and a second port that communicate data; a memory unit that stores the data; and a securing unit that secures, when a first time period starting from transmission of data up to reception of a response to transmitted data at the first port is longer than a second time period starting from transmission of data up to reception of a response to transmitted data at the second port, a first memory space that is used in data transfer in the first port so as for the first memory space to have a larger size than a size of a second memory space used in data transfer in the second port.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: April 15, 2014
    Assignee: Ricoh Company, Limited
    Inventor: Junichi Ikeda
  • Patent number: 8676409
    Abstract: Even when a rigidity table stored in a RAM at the time of a start of a brake operation does not coincide with an actual rigidity characteristic of an electric caliper which changes according to brake conditions including how often and how long a brake operation is applied, it is possible to reduce a deviation between a pressing force instruction value and a generated pressing force by updating the characteristic of the relation between a pressing force instruction value and rotational position each time an estimated thrust force value is calculated during one brake operation. It is possible to steadily keep followability to a pressing force instruction according to an actual state of the rigidity characteristic of the electric caliper, thereby ensuring generation of an appropriate brake force.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: March 18, 2014
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Hiroki Takeda, Hirotaka Oikawa, Junichi Ikeda, Daisuke Goto
  • Publication number: 20130291534
    Abstract: An electrically actuated booster performs displacement control such that the relative displacement relationship between an input member and an assist member is variable according to the absolute displacement of the input member. A target displacement that makes variable the relative displacement relationship between an input piston and a booster piston is set according to a detection signal from a potentiometer (86), and displacement control is performed so that the relative displacement between the two pistons becomes equal to the target displacement on the basis of a signal from a relative displacement sensor (100) that detects the relative displacement between the two pistons.
    Type: Application
    Filed: June 28, 2013
    Publication date: November 7, 2013
    Inventors: Yukio OHTANI, Junichi IKEDA, Kazuhiro NAGAI
  • Patent number: 8500213
    Abstract: An electrically actuated booster performs displacement control such that the relative displacement relationship between an input member and an assist member is variable according to the absolute displacement of the input member. A target displacement that makes variable the relative displacement relationship between an input piston and a booster piston is set according to a detection signal from a potentiometer (86), and displacement control is performed so that the relative displacement between the two pistons becomes equal to the target displacement on the basis of a signal from a relative displacement sensor (100) that detects the relative displacement between the two pistons.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: August 6, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Yukio Ohtani, Junichi Ikeda, Kazuhiro Nagai
  • Publication number: 20130188956
    Abstract: A communication device includes a signal correcting unit that performs signal correction on an electric signal indicating information to be transmitted to reduce signal deterioration occurring in transmission of the electric signal; a conversion unit that converts the electric signal subjected to the signal correction into a digital signal on which information indicating the signal correction performed by the signal correcting unit is superimposed; and a light-emitting element that emits light in accordance with the digital signal converted by the conversion unit.
    Type: Application
    Filed: January 23, 2013
    Publication date: July 25, 2013
    Inventors: Hiroyuki ABE, Junichi IKEDA, Satoru NUMAKURA, Mitsuru SUZUKI
  • Patent number: 8395258
    Abstract: Semiconductor elements and methods for fabricating semiconductor elements that allow semiconductor elements having the same function to utilize different packaging methods. An exemplary semiconductor element includes a first semiconductor element portion, including an internal circuit, electrodes electrically connected to the internal circuit, and a first insulating layer covering the internal circuit while exposing the electrodes; and a second semiconductor element portion electrically connected to the electrodes and formed on the first insulating layer, the second semiconductor element portion including a wiring layer having a first pad and a second pad, and a second insulating layer configured to cover either one of the first pad or the second pad while exposing the other one of the first pad and the second pad.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: March 12, 2013
    Assignee: Oki Semiconductor Co., Ltd.
    Inventor: Junichi Ikeda
  • Patent number: 8383295
    Abstract: A composition for holographic recording medium, which can be coated in a uniform thickness and enables to simply produce a high definition holographic recording medium is provided. And a holographic medium having a low error rate, high storage capacity, high-performance, high-density, which is produced using the composition for the holographic recording medium, is also provided. The composition comprises a (meth)acrylic acid ester group-containing polymerizable substance, an alicyclic epoxy group-containing cationical polymerizable substance of which is ring-opening polymerized by heat, and a hydroxyl group-containing substance which is reactive with the alicyclic epoxy group-containing cationical polymerizable substance. The holographic recording medium is produced by forming a holographic recording layer on a substrate by applying the composition on the base material and polymerizing the alicyclic epoxy group-containing cationical polymerizable substance and the hydroxyl group-containing substance.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: February 26, 2013
    Assignees: Kyoeisha Chemical Co., Ltd., National University Corporation Toyohashi University of Technology
    Inventors: Junichi Ikeda, Nobuya Morishita, Ryo Arai, Chisato Katahira, Yoshihiro Takatani, Kouzaburo Yokouchi, Mitsuteru Inoue, Pang Boey Lim
  • Publication number: 20130016726
    Abstract: A memory control apparatus that controls writing and reading of data to/from a memory. The memory control apparatus includes: a sequence control unit that receives a packet sequence including a write packet including a write request of data and a read packet including a read request of the data, and changes an arrangement of the write packet and the read packet included in the packet sequence so that a first predetermined number of write packets are arranged successively and a second predetermined number of read packets are arranged successively; and a command output unit that receives the packet sequence from the sequence control unit, and outputs a write command according to the write packet and an a read command according to the read packet to the memory, in accordance with an order of arrangement of the write packet and the read packet.
    Type: Application
    Filed: July 5, 2012
    Publication date: January 17, 2013
    Inventors: Satoru NUMAKURA, Junichi IKEDA, Mitsuru SUZUKI, Koji TAKEO, Tetsuya SATOH, Hiroyuki TAKAHASHI
  • Publication number: 20120170068
    Abstract: An image forming apparatus receives raster image data transferred from an external device and forms an image on the basis of the received raster image data. The apparatus includes a processor that controls a transfer of the raster image data from the external device, a first memory connected to the processor through a first bus is used as a working area of the processor, a second memory that stores the raster image data, a memory control unit connected to the second memory through a second bus controls an operation of writing and reading the raster image data in and from the second memory, a printer engine that forms an image on the basis of the raster image data, and an engine control unit that reads the raster image data from the second memory through the memory control unit and supplies the printer engine with the read raster image data.
    Type: Application
    Filed: January 5, 2012
    Publication date: July 5, 2012
    Inventors: Junichi Ikeda, Noriyuki Terao, Satoru Numakura, Hiroyuki Takahashi, Tetsuya Satoh, Koji Takeo, Hideaki Yamamoto, Mitsuru Suzuki
  • Patent number: 8173004
    Abstract: A pulse current from a pulse current supply side is fed to a middle part of an anode holding body to which anodes are connected; both end portions of a cathode holding body, to which cathodes are connected, are connected to a negative pole on the pulse power source side; and inductances of wiring between adjacent anodes and inductances of wiring between adjacent cathodes are set at a ratio of 1:2:3:4 in a direction of spacing from a connection to the pulse power source side. Pulse currents are equally fed to each work and it can be ensured that chromium plating treatment of each work is made equal.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: May 8, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Takahisa Hirasawa, Hiroshi Yoshikura, Junichi Ikeda, Tsuyoshi Kawase, Yuichi Kobayashi
  • Patent number: 8096122
    Abstract: An electric booster according to the present invention comprises a booster piston disposed around an input piston so as to movable relative to the input piston. The booster piston and input piston also serve as a primacy piston of a tandem master cylinder. A brake fluid pressure is generated in the tandem master cylinder by an input thrust force provided from a brake pedal to the input piston and a booster thrust force provided from the electronic actuator to the booster piston. In this electric booster, a slide hole is formed through the secondary piston of the tamed master cylinder in the axial direction therefore, and a rod member is slidably disposed through the slide hole. When the fluid pressure is not increased in the primary pressure chamber, due to the fluid pressure in the secondary pressure chamber, the rod member comes to abut against the input piston, and a reactive force in the secondary pressure chamber is returned to the brake pedal.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: January 17, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Junichi Ikeda, Hirotaka Oikawa, Takayuki Ohno
  • Publication number: 20110246039
    Abstract: Even when a rigidity table stored in a RAM at the time of a start of a brake operation does not coincide with a actual rigidity characteristic (pressing force characteristic in relation to positions) of an electric caliper which changes according to brake conditions including how often and how long a brake operation is applied, it is possible to reduce a deviation between a pressing force instruction value and a generated pressing force by updating the characteristic of the relation between a pressing force instruction value and rotational position (rigidity table) each time an estimated thrust force value is calculated during one brake operation. In other words, it is possible to steadily keep followability to a pressing force instruction according to an actual state of the rigidity characteristic of the electric caliper, thereby ensuring generation of an appropriate brake force.
    Type: Application
    Filed: March 23, 2011
    Publication date: October 6, 2011
    Inventors: Hiroki Takeda, Hirotaka Oikawa, Junichi Ikeda, Daisuke Goto
  • Publication number: 20110225341
    Abstract: A communication apparatus for carrying out communications to and from an external apparatus that includes a first interconnecting unit and a first non-transparent port and effects an interconnection for communications via the first non-transparent port is provided. The communication apparatus includes a second interconnecting unit that includes a second non-transparent port communicably connected to the first non-transparent port. The second interconnecting unit effects an interconnection for communications via the second non-transparent port. The second interconnecting unit performs, when the communication apparatus carries out communications to and from the external apparatus, address translation between an address for use by the communication apparatus and an address for use by the second non-transparent port.
    Type: Application
    Filed: March 10, 2011
    Publication date: September 15, 2011
    Inventors: Tetsuya SATOH, Noriyuki Terao, Koji Takeo, Hideaki Yamamoto, Junichi Ikeda, Satoru Numakura, Mitsuru Suzuki, Hiroyuki Takahashi, Kohki Sasaki
  • Publication number: 20110183992
    Abstract: Provided are therapeutic and/or preventive agents for migraine which comprise, as an active ingredient, a compound having a selective adenosine A2A receptor antagonistic activity or a pharmaceutically acceptable salt thereof; therapeutic and/or preventive agents for migraine which comprise, as an active ingredient, a compound having a selective adenosine A2A receptor antagonistic activity, which has an affinity for the adenosine A2A receptor 10 times or higher than that for the adenosine A1 receptor, or a pharmaceutically acceptable salt thereof; and the like.
    Type: Application
    Filed: July 23, 2009
    Publication date: July 28, 2011
    Applicant: KYOWA HAKKO KIRIN CO., LTD.
    Inventors: Junichi Ikeda, Shunji Ichikawa, Masako Kurokawa, Tomoyuki Kanda
  • Publication number: 20110066822
    Abstract: A data transfer apparatus includes: a first port and a second port that communicate data; a memory unit that stores the data; and a securing unit that secures, when a first time period starting from transmission of data up to reception of a response to transmitted data at the first port is longer than a second time period starting from transmission of data up to reception of a response to transmitted data at the second port, a first memory space that is used in data transfer in the first port so as for the first memory space to have a larger size than a size of a second memory space used in data transfer in the second port.
    Type: Application
    Filed: September 13, 2010
    Publication date: March 17, 2011
    Inventor: Junichi Ikeda
  • Patent number: 7823384
    Abstract: An electrically actuated brake booster capable of obtaining a desired boost ratio for a given input pressure when an electric actuator is activated as a boost source, so as to ensure a desired operability of a brake pedal. The electrically actuated brake booster comprises: an input piston 22 to which an input thrust is applied through an input rod 9 that moves in coordination with operation of a brake pedal 8; and a booster piston 21 to which a booster thrust is applied by an electric actuator 40 that uses an electric motor 41 as a drive source, such that the input piston 22 and the booster piston 21 are disposed to be movable relative to each other but are normally maintained in a neutral position of relative displacement by means of springs 34. While an amount of relative displacement between the pistons 21 and 22 is determined by the potentiometer 45, the electric motor 41 is controlled to adjust the amount of relative displacement to a predetermined value.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: November 2, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Junichi Ikeda, Yukio Ohtani
  • Patent number: 7813362
    Abstract: A communication apparatus is disclosed that includes a transmission circuit configured to transmit transmission data to a communication counterpart; a reception circuit configured to receive reception data from the communication counterpart; a storage device configured as at least two buffers including a transmission buffer that stores the transmission data and a reception buffer that stores the reception data; and an address mapping unit configured to perform address mapping of the buffers including the transmission buffer and the reception buffer on the storage device, and adjust the storage capacity of the transmission buffer and the storage capacity of the reception buffer.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: October 12, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Junichi Ikeda, Koji Oshikiri, Koji Takeo, Noriyuki Terao
  • Publication number: 20100213072
    Abstract: A pulse current from a pulse current supply side is fed to a middle part of an anode holding body to which anodes are connected; both end portions of a cathode holding body, to which cathodes are connected, are connected to a negative pole on the pulse power source side; and inductances of wiring between adjacent anodes and inductances of wiring between adjacent cathodes are set at a ratio of 1:2:3:4 in a direction of spacing from a connection to the pulse power source side. Pulse currents are equally fed to each work and it can be ensured that chromium plating treatment of each work is made equal.
    Type: Application
    Filed: March 16, 2010
    Publication date: August 26, 2010
    Inventors: Takahisa HIRASAWA, Hiroshi YOSHIKURA, Junichi IKEDA, Tsuyoshi KAWASE, Yuichi KOBAYASHI
  • Patent number: 7779187
    Abstract: A statistical-information generating unit monitors packet data output from a transaction layer that constitutes architecture of a PCI Express. The result of the monitored is feedback-controlled to a weight-information updating unit in real time, and is reflected in an arbitration table. A priority is set to the packet data corresponding to a quantity of the packet data actually transferred on a serial communication path.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: August 17, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Junichi Ikeda, Noriyuki Terao, Koji Oshikiri
  • Patent number: D699825
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: February 18, 2014
    Assignee: Daikin Industries Ltd.
    Inventor: Junichi Ikeda