Patents by Inventor Akira Nakajima

Akira Nakajima 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: 7420582
    Abstract: A light source device includes a light-emitting unit having a plurality of light-emitting elements, a first optical unit that substantially collimates beams emitted from the light-emitting elements in a first direction, and a second optical unit that condenses the emitted beams substantially collimated by the first optical unit in a second direction intersecting the first direction.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: September 2, 2008
    Assignee: Seiko Epson Corporation
    Inventor: Akira Nakajima
  • Patent number: 7398687
    Abstract: A cover member of an ultrasonic sensor has a first engagement portion and a second engagement portion, which are respectively engaged with a third engagement portion and a fourth engagement portion of a sensor body. The engagement portions are arranged in such a manner that a force applied to the cover member due to an engagement between the first engagement portion and the third engagement portion and a force applied to the cover member due to an engagement between the second engagement portion and the fourth engagement portion respectively have opposite directions to be substantially countervailed when the sensor body is attached to the cover member. Thus, the cover member can be restricted from slanting when the sensor body is fixed to the cover member.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: July 15, 2008
    Assignee: Denso Corporation
    Inventors: Akira Nakajima, Yasuhiro Kawashima, Hiroyuki Kani, Tadao Shimizu
  • Patent number: 7392705
    Abstract: An ultrasonic sensor includes an ultrasonic transducer and a case. The ultrasonic transducer has a housing in a cylindrical shape with a bottom attached thereto, a piezoelectric device disposed in the housing, a connection pin electrically coupled with the piezoelectric device and a base made of an insulation material for supporting the connection pin extendingly piercing therethrough. The case has an opening for assembly operation of the ultrasonic transducer disposed therein. The piezoelectric device is electrically coupled with a circuit board in the case by using the connection pin and the connection pin is partially protected by a protector portion of the ultrasonic transducer. The case has a guide portion between the ultrasonic transducer and the circuit board for positioning the protector portion in the case.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: July 1, 2008
    Assignee: Denso Corporation
    Inventors: Yasuhiro Kawashima, Hiroyuki Kani, Akira Nakajima
  • Publication number: 20080126920
    Abstract: An method for creating an FMEA sheet includes the steps of, retrieving a plurality of documents, dividing words in each of the plurality of retrieved documents into a plurality of morpheme words by morphological analysis, calculating a co-occurrence frequency of each of the plurality of morpheme words, generating a co-occurrence frequency network with morpheme words having a greater co-occurrence frequency than a predetermined level in the plurality of morpheme words, grouping the plurality of documents using the co-occurrence frequency network, extracting a word same as an FMEA word registered in an FMEA word concept dictionary created in advance from each of the plurality of documents belonging to a same group as a word to be used in creating the FMEA sheet and substituting the extracted word to the FMEA sheet.
    Type: Application
    Filed: October 16, 2007
    Publication date: May 29, 2008
    Inventors: Keiji Otaka, Toshihiro Moriya, Soichiro Kita, Akira Nakajima, Hidefumi Konishi, Masayoshi Abe, Hideki Yachiku
  • Patent number: 7350504
    Abstract: In control apparatus and method for an inner cylinder spark ignited internal combustion engine having a fuel injection valve configured to directly inject fuel into an inside of an engine cylinder and a spark plug, a super retard combustion is executed to set an ignition timing after a compression stroke top dead center and to inject fuel before the ignition timing and after the compression stroke top dead center during a predetermined engine driving condition and at least part of fuel is injected before the compression stroke top dead center to decrease a fuel injection quantity after the compression stroke top dead center during an interval which is immediately after an engine start and in which a pressure of fuel is relatively low.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: April 1, 2008
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Makoto Yasunaga, Tomoyuki Takeda, Akira Nakajima, Taizo Horikomi, Daisuke Takaki, Katsuaki Uchiyama, Masatoshi Hidaka, Hitoshi Ishii, Tomoyuki Shigefuji, Masayuki Tomita, Mitsuhiro Akagi
  • Publication number: 20080049816
    Abstract: A receiving apparatus includes an error detecting circuit configured to detect an error of a reception signal; an error correcting circuit configured to correct the detected error of the reception signal; a power measuring circuit configured to measure a power value of the reception signal; and a power supply control section configured to control a power supply to the error correcting circuit based on the power value. The receiving apparatus further includes a receiving circuit configured to receive a radio signal; a rake finger section configured to execute a despreading process on the signal received by the receiving circuit, and a rake combining section configured to carry out a rake combination of the plurality of signals subjected to the despreading process to generate the reception signal.
    Type: Application
    Filed: August 23, 2007
    Publication date: February 28, 2008
    Applicant: NEC ELECTRONICS CORPORATION
    Inventor: Akira NAKAJIMA
  • Publication number: 20080040058
    Abstract: Reference data for automatically inspecting shapes of fillets formed on a substrate are set to an inspection device that illuminates the substrate from specified directions to generate an image. For each type of components mounted to the substrate, a database is prepared, registering sets of reference data corresponding to different fillet shapes in correlation with heights of solder for forming fillets having these shapes. After components to be an object of inspection are identified, specified steps are carried out on each of these components, including the step of obtaining data on the height of solder for forming the fillet related to a land for which a target area for inspection has been set and reading out reference data corresponding to the data obtained from the reference data registered in the database.
    Type: Application
    Filed: July 20, 2007
    Publication date: February 14, 2008
    Inventors: Yoshiki Fujii, Yasutomo Doi, Akira Nakajima, Toshihiro Moriya, Yasuaki Nakajima
  • Publication number: 20080034258
    Abstract: A fault management apparatus that enables calculation of evaluation values relating to a fault occurring to a management target as objective values without involvement of human judgment is provided. Fault information containing fault content information showing content of a fault occurring to a process in a production line, and detection status information and action content information associated with the fault is stored in a fault occurrence history storage part as a fault occurrence history. A fault extraction part reads the fault occurrence history from the fault occurrence history storage part to extract fault information containing specific fault content information. An influence degree calculation part calculates a degree of influence showing the degree of influence caused by a specific fault by performing statistical processing based on detection status information and action content information contained in the fault information extracted by the fault extraction part.
    Type: Application
    Filed: April 6, 2007
    Publication date: February 7, 2008
    Inventors: Toshihiro Moriya, Akira Nakajima
  • Publication number: 20080012925
    Abstract: A line head, includes a light-emitting element row, having a plurality of light-emitting elements arranged in a first direction; a plurality of feeding portions; a first power supply line for power supply, connected to a first feeding portion for a power supply of the feeding portions; and a second power supply line for ground, connected to a second feeding portion for a ground of the feeding portions. The light-emitting elements are respectively connected between the first power supply line and the second power supply line.
    Type: Application
    Filed: September 20, 2007
    Publication date: January 17, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Katsunori Yamazaki, Takao Miyazawa, Akira Nakajima, Yujiro Nomura, Kiyoshi Tsujino
  • Publication number: 20070261525
    Abstract: A guillotine cutter (1) of the invention is provided with a pressing block driving mechanism (6) positioning a pressing block (5) at a standby position which is spaced upwardly from a sheet bundle (10), a first operating position pressing the sheet bundle by a first pressing force, and a second operating position pressing the sheet bundle by a second pressing force which is larger than the first pressing force.
    Type: Application
    Filed: May 8, 2007
    Publication date: November 15, 2007
    Inventors: Chuji Yamaguchi, Hitoshi Uchida, Akira Nakajima, Tetsuya Kawagoe, Takakazu Hori, Jun Mochizuki, Eiji Katayama
  • Patent number: 7286147
    Abstract: A line head, includes a light-emitting element row, having a plurality of light-emitting elements arranged in a first direction; a plurality of feeding portions; a first power supply line for power supply, connected to a first feeding portion for a power supply of the feeding portions; and a second power supply line for ground, connected to a second feeding portion for a ground of the feeding portions. The light-emitting elements are respectively connected between the first power supply line and the second power supply line.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: October 23, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Katsunori Yamazaki, Takao Miyazawa, Akira Nakajima, Yujiro Nomura, Kiyoshi Tsujino
  • Publication number: 20070230273
    Abstract: A structure is used to prevent an ultrasonic sensor from being damaged by a spring member provided for a bezel. A metal spring is fixed in a groove in a bezel. By setting depth of the groove to be larger than thickness of the metal spring, the metal spring is positioned on the inside further than an open end of the bezel. With the configuration, the metal spring is prevented from coming into direct contact with an ultrasonic transducer. Thus, a vibration face of the ultrasonic transducer is prevented from being damaged.
    Type: Application
    Filed: January 30, 2007
    Publication date: October 4, 2007
    Applicant: DENSO CORPORATION
    Inventors: Akira Nakajima, Hiroyuki Kani, Yasuhiro Kawashima, Tadao Shimizu
  • Publication number: 20070230274
    Abstract: An ultrasonic sensor has a sensor body and a bezel having a metal spring attached on a side wall thereof for installation on a vehicle component. A free end of the metal spring is positioned to protrude from a through hole of the side wall, is pressed by a portion of the sensor body that is inserted in a hollow space of the bezel, and is pushed back by an opening face of the sensor body. In this manner, the bezel is firmly attached on the component and the sensor body is firmly attached on the bezel.
    Type: Application
    Filed: March 1, 2007
    Publication date: October 4, 2007
    Applicant: DENSON CORPORATION
    Inventors: Akira Nakajima, Yasuhiro Kawashima, Hiroyuki Kani, Tadao Shimizu
  • Publication number: 20070220981
    Abstract: A cover member of an ultrasonic sensor has a first engagement portion and a second engagement portion, which are respectively engaged with a third engagement portion and a fourth engagement portion of a sensor body. The engagement portions are arranged in such a manner that a force applied to the cover member due to an engagement between the first engagement portion and the third engagement portion and a force applied to the cover member due to an engagement between the second engagement portion and the fourth engagement portion respectively have opposite directions to be substantially countervailed when the sensor body is attached to the cover member. Thus, the cover member can be restricted from slanting when the sensor body is fixed to the cover member.
    Type: Application
    Filed: March 8, 2007
    Publication date: September 27, 2007
    Applicant: Denso Corporation
    Inventors: Akira Nakajima, Yasuhiro Kawashima, Hiroyuki Kani, Tadao Shimizu
  • Patent number: 7223958
    Abstract: To provide an electro-optical device, such as a display or a printer head having a self-luminous element, in which a light-emitting state of a light-emitting element is detected. The electro-optical device comprises a plurality of pixel units arranged in a display region on a substrate in a predetermined pattern, each including a light-emitting element; a plate-like member disposed to overlap the display region and formed of a transparent medium for transmitting light emitted from the plurality of pixel units and internally reflecting a portion of the transmitted light; and light detection means for detecting light that is internally reflected and reaches at least one side of the display region through the inside of the plate-like member.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: May 29, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Akira Nakajima, Katsunori Yamazaki
  • Patent number: 7194999
    Abstract: A combustion control apparatus configured to operate a direct-injection spark-ignition internal combustion engine in a top dead center injection operating mode. In the top dead center injection operating mode, a fuel injection start timing is set to be before compression top dead center, a fuel injection end timing is set to be after compression top dead center, and an ignition timing is set to be after compression top dead center. The combustion control apparatus is configured to promote incylinder fuel spray penetration.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: March 27, 2007
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Toshiya Kono, Hitoshi Ishii, Mitsuhiro Akagi, Katsuaki Uchiyama, Masayuki Tomita, Akira Nakajima, Taro Sakai, Masatoshi Hidaka
  • Publication number: 20070052983
    Abstract: A light emitting device includes: a plurality of light emitting elements that emit light to have luminosity depending on the magnitude of a driving signal; a plurality of holding units that are respectively disposed in the plurality of light emitting elements, and respectively hold the driving signal to maintain a magnitude regulated such that the luminosity of the plurality of light emitting elements becomes uniform; and a plurality of supply units that are respectively disposed in the plurality of light emitting elements, and supply the driving signal, which is held by the holding units to have a certain magnitude for a period of time according to a gradation of light to be emitted, to a corresponding light emitting element.
    Type: Application
    Filed: August 25, 2006
    Publication date: March 8, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Akira NAKAJIMA
  • Patent number: 7185631
    Abstract: There is provided a combustion control system for a direct-injection spark-ignition internal combustion engine, including a fuel injection valve that injects fuel directly into a cylinder of the engine to form an air-fuel mixture in a combustion chamber of the engine cylinder, a spark plug that ignites the air-fuel mixture, and a control unit that performs combustion retard control to set an ignition timing of the spark plug at a point after compression top dead center and set an injection period of the fuel injection valve at a time after compression top dead center and before the ignition timing in such a manner that a time interval from a start point of the injection period to the ignition timing increases with decrease in a temperature in the engine cylinder at a cold start of the engine.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: March 6, 2007
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tomoyuki Takeda, Masayuki Tomita, Taro Sakai, Akira Nakajima, Takao Maitani
  • Publication number: 20070023006
    Abstract: There is provided a combustion control system for a direct-injection spark-ignition internal combustion engine, including a fuel injection valve that injects fuel directly into a cylinder of the engine to form an air-fuel mixture in a combustion chamber of the engine cylinder, a spark plug that ignites the air-fuel mixture, and a control unit that performs combustion retard control to set an ignition timing of the spark plug at a point after compression top dead center and set an injection period of the fuel injection valve at a time after compression top dead center and before the ignition timing in such a manner that a time interval from a start point of the injection period to the ignition timing increases with decrease in a temperature in the engine cylinder at a cold start of the engine.
    Type: Application
    Filed: October 11, 2005
    Publication date: February 1, 2007
    Inventors: Tomoyuki Takeda, Masayuki Tomita, Taro Sakai, Akira Nakajima, Takao Maitani
  • Patent number: D570325
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: June 3, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Hasegawa, Akira Nakajima, Kenji Miyata