Patents by Inventor Hiroshi Katoh

Hiroshi Katoh 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: 7181331
    Abstract: An engine air-fuel ratio control system is configured to use a rich air-fuel ratio immediately after starting an engine such that the air-fuel ratio converge rapidly toward a stoichiometric value and then afterwards start an air-fuel ratio feedback control. Upon determining an air-fuel ratio sensor is active, a stabilization fuel quantity increasing factor that is a component of a target air-fuel ratio revising coefficient is decreased at a higher rate than the rate used before the air-fuel ratio sensor was determined to be active. Air-fuel ratio feedback control is started when the air-fuel ratio corresponds to a stoichiometric air-fuel ratio. After starting air-fuel ratio feedback control, an unburned fuel quantity compensating value is set based on the stabilization fuel quantity increasing factor in effect at that point in time and added to the target air-fuel ratio revising coefficient while, simultaneously, the stabilization fuel quantity increasing factor is set to zero.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: February 20, 2007
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Hiroshi Katoh
  • Publication number: 20060243480
    Abstract: Methods and apparatus provide for connecting an integrated circuit having a ball grid array to a printed circuit board having a matrix of contact pads for electrical connection to the ball grid array.
    Type: Application
    Filed: April 27, 2005
    Publication date: November 2, 2006
    Inventors: Eiji Kasahara, Hiroshi Katoh
  • Patent number: 7127344
    Abstract: An engine air-fuel ratio control system is configured to use a rich air-fuel ratio immediately after starting an engine such that the air-fuel ratio converge rapidly toward a stoichiometric value and then afterwards start an air-fuel ratio feedback control. Upon determining an air-fuel ratio sensor is active based on the output of the air-fuel ratio sensor and the amount of time elapsed since an engine was started, a stabilization fuel quantity increasing value that is a component of a target air-fuel ratio revising coefficient is decreased at a higher rate than the rate used before the air-fuel ratio sensor was determined to be active. During the same period, an air-fuel ratio feedback revising coefficient is held at a reference value. After the output of the air-fuel ratio sensor reaches a value corresponding to a stoichiometric air-fuel ratio, an air-fuel ratio feedback control is started.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: October 24, 2006
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Hiroshi Katoh
  • Publication number: 20060174031
    Abstract: An information processor includes a network adapter connected to a network for transmitting data at the data link layer level, and a setup processing section for recognizing the network adapter connected to the network within a memory, sending out a broadcast packet that requests a response at the data link layer level to the network via the recognized network adapter, verifying a response packet transmitted via the network, acquiring a hardware address and an IP address from the response packet, and thereby performing setup for data transmission at the data link layer level and the transport layer level, and automatically performing a data migration or exchange process between information processors.
    Type: Application
    Filed: November 1, 2005
    Publication date: August 3, 2006
    Applicant: Lenovo (Singapore) Pte. Ltd.
    Inventors: Naoki Yamakoshi, Tadashi Yamamoto, Hiroshi Katoh
  • Publication number: 20060112942
    Abstract: An engine air-fuel ratio control system is configured to use a rich air-fuel ratio immediately after starting an engine such that the air-fuel ratio converge rapidly toward a stoichiometric value and then afterwards start an air-fuel ratio feedback control. Upon determining an air-fuel ratio sensor is active, a stabilization fuel quantity increasing factor that is a component of a target air-fuel ratio revising coefficient is decreased at a higher rate than the rate used before the air-fuel ratio sensor was determined to be active. Air-fuel ratio feedback control is started when the air-fuel ratio corresponds to a stoichiometric air-fuel ratio. After starting air-fuel ratio feedback control, an unburned fuel quantity compensating value is set based on the stabilization fuel quantity increasing factor in effect at that point in time and added to the target air-fuel ratio revising coefficient while, simultaneously, the stabilization fuel quantity increasing factor is set to zero.
    Type: Application
    Filed: September 20, 2005
    Publication date: June 1, 2006
    Applicant: Nissan Motor Co., Ltd.
    Inventor: Hiroshi Katoh
  • Patent number: 7047123
    Abstract: An engine air-fuel ratio control system uses a rich air-fuel ratio immediately after starting an engine to converge rapidly the air-fuel ratio toward a stoichiometric value. Upon determining an air-fuel ratio sensor is active, a stabilization fuel quantity increasing factor of a target air-fuel ratio revising coefficient decreases at a higher rate than before the air-fuel ratio sensor was active. Air-fuel ratio feedback control starts when the air-fuel ratio corresponds to a stoichiometric air-fuel ratio. Afterwards, when either air-fuel ratio feedback control starts or the engine enters a high rotational speed/high load region that operates using a rich air-fuel ratio, whichever occurs first, an unburned fuel quantity compensating value is set based on the stabilization fuel quantity increasing factor in effect at that point in time and added to the target air-fuel ratio revising coefficient while, simultaneously, the stabilization fuel quantity increasing factor is set to zero.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: May 16, 2006
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Hiroshi Katoh
  • Publication number: 20060065256
    Abstract: An engine air-fuel ratio control system uses a rich air-fuel ratio immediately after starting an engine to converge rapidly the air-fuel ratio toward a stoichiometric value. Upon determining an air-fuel ratio sensor is active, a stabilization fuel quantity increasing factor of a target air-fuel ratio revising coefficient decreases at a higher rate than before the air-fuel ratio sensor was active. Air-fuel ratio feedback control starts when the air-fuel ratio corresponds to a stoichiometric air-fuel ratio. Afterwards, when either air-fuel ratio feedback control starts or the engine enters a high rotational speed/high load region that operates using a rich air-fuel ratio, whichever occurs first, an unburned fuel quantity compensating value is set based on the stabilization fuel quantity increasing factor in effect at that point in time and added to the target air-fuel ratio revising coefficient while, simultaneously, the stabilization fuel quantity increasing factor is set to zero.
    Type: Application
    Filed: September 23, 2005
    Publication date: March 30, 2006
    Applicant: Nissan Motor Co., Ltd.
    Inventor: Hiroshi Katoh
  • Publication number: 20060064965
    Abstract: A diagnostic apparatus for an internal combustion engine. An exhaust purification section includes an exhaust purifier disposed in an exhaust passage of the internal combustion engine, for purifying an exhaust emission, and a purifier activation section configured to control engine operating parameters of the internal combustion engine to promote activation of the exhaust purifier during the internal combustion engine being cold. The diagnostic apparatus is configured to determine a state of the exhaust purifier, to determine a total purifier out emission quantity as a quantity of the exhaust emission exiting the exhaust purifier during the internal combustion engine being cold, in accordance with the state of the exhaust purifier, and to determine normality of the exhaust purification section in accordance with the total purifier out emission quantity.
    Type: Application
    Filed: September 22, 2005
    Publication date: March 30, 2006
    Inventors: Rie Takatsuto, Hiroshi Katoh
  • Publication number: 20060065257
    Abstract: An engine air-fuel ratio control system is configured to use a rich air-fuel ratio immediately after starting an engine such that the air-fuel ratio converge rapidly toward a stoichiometric value and then afterwards start an air-fuel ratio feedback control. Upon determining an air-fuel ratio sensor is active based on the output of the air-fuel ratio sensor and the amount of time elapsed since an engine was started, a stabilization fuel quantity increasing value that is a component of a target air-fuel ratio revising coefficient is decreased at a higher rate than the rate used before the air-fuel ratio sensor was determined to be active. During the same period, an air-fuel ratio feedback revising coefficient is held at a reference value. After the output of the air-fuel ratio sensor reaches a value corresponding to a stoichiometric air-fuel ratio, an air-fuel ratio feedback control is started.
    Type: Application
    Filed: September 28, 2005
    Publication date: March 30, 2006
    Applicant: Nissan Motor Co., Ltd.
    Inventor: Hiroshi Katoh
  • Patent number: 6959242
    Abstract: A spark ignition engine (2) has a fuel injector (8) in an intake port (7). An engine rotation speed sensor (9) detects the rotation speed of the engine (2). The controller (1) determines the target fuel injection amount of the fuel injector (8) during startup of the engine (2) by correcting the basic injection amount in response to the trend in the variation in the engine rotation speed. When the rotation speed of the engine (2) decreases, the controller (1) sets the target fuel injection amount to be smaller than when the rotation speed of the engine (2) is increasing at an identical rotation speed. As a result, effects on the air-fuel ratio related to wall flow relative to fluctuations in the rotation speed of the engine (2) are eliminated and the control accuracy of the air-fuel ratio of the engine (2) is improved.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: October 25, 2005
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hiroshi Katoh, Ritsuo Sato
  • Patent number: 6922627
    Abstract: A spark ignition internal combustion engine (2) performs ignition within a fixed ignition crank angle range. The operation control device comprises a programmable controller (1) and a unit crank angle sensor (9) outputting a unit crank angle signal on each unit crank angle. The controller (1) calculates the engine rotation speed based on the unit crank angle signals (S1). By preventing the calculation of the engine rotation speed based on the unit crank angle signals detected in the ignition crank angle range, errors in the calculation of the engine rotation speed resulting from engine ignition noise are eliminated and a precise engine rotation speed is obtained.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: July 26, 2005
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hiroshi Katoh, Ritsuo Sato
  • Publication number: 20050010609
    Abstract: A backup system for backing up target data stored in an information processing device comprises a backup program stor for retaining a backup program, a read authentication information stor for retaining read authentication information, a backup function sender which transfers the backup program and the read authentication information to the device, and a data stor which retains the target data to be transferred to the backup system by the device which has executed the backup program, wherein the backup program is invoke-able on the device by a user of the device, and comprises a read authentication mechanism for obtaining permission to read the target data from the device by causing the read authentication information to be authenticated, and a transfer mechanism for causing the device to read the target data and transfer the target data to the backup system.
    Type: Application
    Filed: June 4, 2004
    Publication date: January 13, 2005
    Applicant: International Business Machines Corporation
    Inventors: Hiroshi Katoh, Hirokazu Miyamori, Kei Watanabe, Naoki Yamakoshi
  • Patent number: 6784192
    Abstract: The present invention provides a novel compound having a superior Na+ channel inhibitory activity. Namely, it provides a compound represented by the following formula (I), a salt thereof or a hydrate of them. In the formula, the ring A represents a ring represented by the formula: (wherein R1 represents a hydrogen atom etc.; and R2 represents indicates a hydrogen atom and the like) etc.; W represents an optionally substituted C1-6 alkylene group etc.; Z represents an optionally substituted C6-14 aromatic hydrocarbon cyclic group etc.; and l represents an integer from 0 to 6.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: August 31, 2004
    Assignee: Eisai Co., Ltd.
    Inventors: Fumihiro Ozaki, Toshihiko Kaneko, Mutsuko Tabata, Yoshinori Takahashi, Kazuki Miyazaki, Junichi Kamata, Ichiro Yoshida, Masayuki Matsukura, Hiroyuki Suzuki, Takashi Yoshinaga, Hiroki Ishihara, Hiroshi Katoh, Kohei Sawada, Tatsuhiro Onogi, Kiyoaki Kobayashi, Miyuki Ohkubo
  • Patent number: 6760657
    Abstract: A fuel injector (5) injects fuel to generate an air-fuel mixture that is burnt in the engine (1), and a sensor (16) detects an air-fuel ratio of the air-fuel mixture from an exhaust gas composition of the engine (1). A controller (11) calculates a dead time representing a lag between the air-fuel ratio variation of the air-fuel mixture and the air-fuel ratio variation detected by the sensor (16), and calculates an estimated state quantity by applying a dead time compensation according to Smith method and a disturbance compensation to the air-fuel ratio detected by the sensor (16). By determining an air-fuel ratio feedback correction amount based on the estimated state quantity applying a sliding mode control process, the response and stability of air-fuel ratio control is improved.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: July 6, 2004
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Hiroshi Katoh
  • Publication number: 20040122582
    Abstract: A spark ignition internal combustion engine (2) performs ignition within a fixed ignition crank angle range. The operation control device comprises a programmable controller (1) and a unit crank angle sensor (9) outputting a unit crank angle signal on each unit crank angle. The controller (1) calculates the engine rotation speed based on the unit crank angle signals (S1). By preventing the calculation of the engine rotation speed based on the unit crank angle signals detected in the ignition crank angle range, errors in the calculation of the engine rotation speed resulting from engine ignition noise are eliminated and a precise engine rotation speed is obtained.
    Type: Application
    Filed: November 5, 2003
    Publication date: June 24, 2004
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Hiroshi Katoh, Ritsuo Sato
  • Publication number: 20040118385
    Abstract: A spark ignition engine (2) has a fuel injector (8) in an intake port (7). An engine rotation speed sensor (9) detects the rotation speed of the engine (2). The controller (1) determines the target fuel injection amount of the fuel injector (8) during startup of the engine (2) by correcting the basic injection amount in response to the trend in the variation in the engine rotation speed. When the rotation speed of the engine (2) decreases, the controller (1) sets the target fuel injection amount to be smaller than when the rotation speed of the engine (2) is increasing at an identical rotation speed. As a result, effects on the air-fuel ratio related to wall flow relative to fluctuations in the rotation speed of the engine (2) are eliminated and the control accuracy of the air-fuel ratio of the engine (2) is improved.
    Type: Application
    Filed: October 17, 2003
    Publication date: June 24, 2004
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Hiroshi Katoh, Ritsuo Sato
  • Publication number: 20030220368
    Abstract: The present invention provides a novel compound having a superior Na+ channel inhibition activity. Namely, it provides a compound represented by the following formula (I), a salt thereof or a hydrate of them.
    Type: Application
    Filed: July 19, 2002
    Publication date: November 27, 2003
    Inventors: Fumihiro Ozaki, Toshihiko Kaneko, Mutsuko Tabata, Yoshinori Takahashi, Kazuki Miyazaki, Junichi Kamata, Ichiro Yoshida, Masayuki Matsukura, Hiroyuki Suzuki, Takashi Yoshinaga, Hiroki Ishihara, Hiroshi Katoh, Kohei Sawada, Tatsuhiro Onogi, Kiyoaki Kobayashi, Miyuki Ohkubo
  • Patent number: 6619277
    Abstract: A state quantity &sgr;(n) of a switching function is calculated based on a predetermined target air-fuel ratio TGABF, a detected air-fuel ratio AFSAF detected by a sensor (16), and a state equation derived from a transfer function Geng(q) of a secondary discrete system, representing the correlation between an air-fuel ratio of an air fuel mixture in a combustion chamber (1A) and the detected air-fuel ratio (S14). The air-fuel ratio is feedback corrected by applying a sliding mode control process based on the difference between the target air-fuel ratio TGABF and the detected air-fuel ratio AFSAF, and the state quantity &sgr;(n) (S14-S21). The response and robustness of the air-fuel ratio control are enhanced by using a physical model of the secondary discrete system.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: September 16, 2003
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Hiroshi Katoh
  • Patent number: 6578551
    Abstract: The startup time of an engine is shortened by performing initial fuel injection after the start of cranking on a cylinder undergoing an intake stroke and a cylinder undergoing an exhaust stroke. After the initial fuel injection, HC emissions are suppressed by performing fuel injection in cylinders undergoing an exhaust stroke. Furthermore when it is determined that initial combustion has not occurred after the initial fuel injection, an additional injection is performed on the cylinder undergoing an intake stroke. In this manner, it is possible to minimize increases in the startup time and adverse effects on exhaust emissions.
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: June 17, 2003
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Masahiko Yuya, Ritsuo Sato, Hiroshi Katoh, Takahisa Koseki
  • Patent number: 6575150
    Abstract: In order to improve the control characteristics for ignition timing during transient operating conditions including engine startup, during engine transient operating conditions, a controller (1) sets an advance limit ADVLMT restricting the maximum value of the ignition timing advance to a limit ADMLMTS which is a large value when compared to the value for steady-state operating conditions. Furthermore during transient operating conditions, the dwell angle TDWLLB is also increased and the correlation of the ignition timing control with respect to a suitable ignition timing is improved.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: June 10, 2003
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hiroshi Katoh, Ritsuo Sato, Masahiko Yuya