Patents by Inventor Tetsuya Yamaguchi

Tetsuya Yamaguchi 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: 20090311007
    Abstract: An image forming apparatus including: a first and a second photoconductor groups constituted of one or more photoconductors respectively; a first and a second drive control sections for controlling the drive of the first and the second photoconductor groups respectively to rotate the photoconductors thereof, wherein the rotational phases of the first photoconductor group and the second photoconductor group are adjusted to be matched therebetween; and the first and the second drive control sections control so that predetermined profile of a target speed is applied to the first and second photoconductor groups wherein, in the target-speed profile, the first photoconductor group starts rotating after a elapse of a predetermined startup delay time from the second photoconductor group starts rotating, and both groups end at a same final speed predetermined for full-color image formation, wherein the startup delay time is predetermined based on measurements of times needed for each of the first and the second photo
    Type: Application
    Filed: June 11, 2009
    Publication date: December 17, 2009
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Shuichi Mochizuki, Tetsushi Ito, Hirotsugu Akamatsu, Kiyoshi Sasoh, Yuuji Kumagai, Tetsuya Yamaguchi
  • Patent number: 7628729
    Abstract: A hydraulic control apparatus, provided with a manual shift valve that outputs a forward range pressure and a reverse range pressure, and a linear solenoid valve that outputs an engagement pressure to the hydraulic servo that engages during reverse travel when energized, includes a fourth clutch relay valve that is interposed between the linear solenoid valve and the hydraulic servo. The fourth clutch relay valve communicates an engagement pressure of the linear solenoid valve to the hydraulic servo by locking in the normal position when a signal pressure of the solenoid valve is input, and communicates a reverse range pressure to the hydraulic servo by being switched to a fail position by the reverse range pressure during a failure in which the fourth clutch relay valve is de-energized. Thereby, it is possible to establish a reverse speed during a failure in which the solenoid valve is de-energized.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: December 8, 2009
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Nobuhiro Sato, Tetsuya Yamaguchi, Kazuyuki Noda, Akira Fukatsu, Mikio Iwase, Kazutoshi Nozaki, Atsushi Honda
  • Patent number: 7621837
    Abstract: A hydraulic control apparatus for an automatic transmission is provided with a solenoid valve that outputs a signal pressure during a failure and does not output a signal pressure during normal operation and a first clutch apply relay valve that switches between a normal position (the right half position) and a fail position (the left half position) based on this signal pressure are provided. During a failure, fail-safe control is carried out by the first clutch apply relay valve switching to the fail position. The first clutch apply relay valve inputs the engagement pressure of the hydraulic servo from the linear solenoid valve when in the normal position, and is locked in the normal position. Thereby, while the first clutch is engaged, the second brake apply control valve can be switched by the signal pressure of the solenoid valve.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: November 24, 2009
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Nobuhiro Sato, Tetsuya Yamaguchi, Kazuyuki Noda, Akira Fukatsu, Mikio Iwase, Kazutoshi Nozaki, Atsushi Honda
  • Patent number: 7618344
    Abstract: A hydraulic control apparatus for a multi-stage automatic transmission includes solenoid valves such as the linear solenoid valves that are formed as normally closed valves. A first clutch apply relay valves that outputs a forward range pressure as a reverse input pressure during an all-solenoid-off mode, and a second clutch apply relay valve that switches between a left half position that inputs a reverse input pressure to a discharge port and a right half position that inputs the reverse pressure to the discharge port are provided. The second clutch apply relay valve is set to the right half position during normal engine startup and locked based on the lock pressure by feeding the line pressure as a lock pressure and is set at the left half position that interrupts the lock pressure after the engine is restarted during all-solenoids-off.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: November 17, 2009
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Takayuki Hayashi, Tetsuya Yamaguchi, Kazuyuki Noda, Minoru Todo, Kazuhisa Ozaki, Kazutoshi Nozaki, Atsushi Honda
  • Publication number: 20090263159
    Abstract: An image forming apparatus including: a first and a second photoconductor groups constituted of one or more photoconductors respectively; a first and a second drive control sections for controlling the drive of the first and the second photoconductor groups respectively to rotate the photoconductors thereof, wherein the rotational phases of the first photoconductor group and the second photoconductor group are adjusted to be matched therebetween; and the first and the second drive control sections control so that the first and the second photoconductor groups are driven simultaneously with an equal target speed during a formation of a image, wherein an initial drive speed is lower than a predetermined speed for image-formation, and after the first and the second photoconductor groups reaches the initial drive speed, the target speed is changed from the initial drive speed to the speed for image-formation.
    Type: Application
    Filed: April 8, 2009
    Publication date: October 22, 2009
    Inventors: Kenichi Isomi, Tetsushi Ito, Hirotsugu Akamatsu, Tetsuya Yamaguchi, Shuichi Mochizuki
  • Patent number: 7554141
    Abstract: A solid-state image pickup device comprising a semiconductor substrate which comprises a substrate body containing P-type impurities and a first N-type semiconductor layer containing N-type impurities, the first N-type semiconductor layer being provided on the substrate body, and including a first P-type semiconductor layer which contains p-type impurities, and which is located on the substrate body, a plurality of optical/electrical conversion portions formed of second N-type semiconductor layers which are provided independently of each other in respective positions in a surface portion of the first N-type semiconductor layer, and a plurality of second P-type semiconductor layers which are formed to surround the optical/electrical conversion portions, which are provided along element isolation regions provided in respective positions in the surface portion of the first N-type semiconductor layer, and which continuously extend from the surface portion of the first N-type semiconductor layer to a surface porti
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: June 30, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tetsuya Yamaguchi, Hiroshige Goto, Hirofumi Yamashita, Hisanori Ihara, Ikuko Inoue, Nagataka Tanaka
  • Publication number: 20090080914
    Abstract: A sub CPU of an image forming section forms a toner image based on test line data on an intermediate transfer belt, detects an inclination of the formed toner image for each color component, calculates an adjustment indicative value for correcting the detected inclination for each color component, and outputs the adjustment indicative values to the BK adjusting section, C adjusting section, M adjusting section, and Y adjusting section, respectively, of an inclination adjusting section. The BK adjusting section, C adjusting section, M adjusting section, and Y adjusting section generate, based on the respective adjustment indicative values obtained from the sub CPU, adjustment amounts for an inclination adjustment process to be executed on image data, execute the inclination adjustment process based on the generated adjustment amounts, and output the obtained image data to the respective LDs of an exposure unit.
    Type: Application
    Filed: September 10, 2008
    Publication date: March 26, 2009
    Inventors: Yoshikazu Harada, Norio Tomita, Yoshiteru Kikuchi, Tetsushi Ito, Tetsuya Yamaguchi
  • Publication number: 20080298841
    Abstract: It is an object to prevent distortions and deviations of images caused by the eccentricity of a driven gear mounted to a rotational shaft of a photosensitive drum. There are provided a driving gear which is secured to a rotational shaft of a rotational driving power source and is rotated at a constant peripheral speed, a driven gear secured coaxially to a rotational shaft of a cylindrical-shaped photosensitive member, a phase control gear having the same diameter as that of the driven gear and having the same rotational speed variation characteristic as that of the driven gear, and a transmission gear, and a driving force from the driving gear is transmitted to the driven gear through the phase control gear and the transmission gear.
    Type: Application
    Filed: May 27, 2008
    Publication date: December 4, 2008
    Inventors: Norio TOMITA, Yoshikazu Harada, Tetsushi Ito, Tetsuya Yamaguchi, Yoshiteru Kikuchi, Kenichi Isomi, Showtaro Okamoto
  • Publication number: 20080257183
    Abstract: Each of two split webs W1 and W2 (W1? and W2?) bisected at a slitter 61 from a web W (W?) is allowed to travel into a former S1, S2 after it is adjusted widthwise in position.
    Type: Application
    Filed: April 3, 2008
    Publication date: October 23, 2008
    Applicant: KABUSHIKI KAISHA TOKYO KIKAI SEISAKUSHO
    Inventor: Tetsuya YAMAGUCHI
  • Publication number: 20080251822
    Abstract: According to an aspect of the invention, there is provided an amplification-type solid-state image sensing device which uses a semiconductor substrate formed by epitaxially depositing an n-type semiconductor layer on a p-type semiconductor substrate and has a photoelectric conversion unit formed in the n-type semiconductor layer including a first p-type semiconductor layer which is formed under the photoelectric conversion unit of at least one of a G pixel portion and a B pixel portion a second p-type semiconductor layer which is formed to surround the photoelectric conversion unit together with the first p-type semiconductor layer and has a depth up to the first p-type semiconductor layer and a third p-type semiconductor layer which is formed to surround an R pixel portion and has a depth up to the p-type semiconductor substrate.
    Type: Application
    Filed: October 3, 2007
    Publication date: October 16, 2008
    Inventors: Tetsuya Yamaguchi, Hiroshige Goto
  • Publication number: 20080201682
    Abstract: A method of designing a wiring structure of an LSI is capable of reducing a capacitance variation ratio ?C/C or a resistance-by-capacitance variation ratio ?(RC)/(RC) of the wiring structure.
    Type: Application
    Filed: April 16, 2008
    Publication date: August 21, 2008
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Naoyuki Shigyo, Tetsuya Yamaguchi
  • Publication number: 20080131150
    Abstract: An image forming apparatus including: image forming sections, each image forming section forming an image of a color component among plural color components under a predetermined condition, and forming a pattern of each color component for adjusting the condition; a detecting section that reads the formed patterns so as to perform a temporary detection and a main detection of a deviation from a reference under the condition; and a correction control section that determines whether the deviation of the temporary detection exceeds a predetermined threshold value or not, and when the deviation exceeds the threshold value, executes the main detection to fully detect the deviation so as to correct the condition, wherein the correction control section controls to form the pattern for the temporary detection, the number of the color components for the temporary detection being fewer than those of the patterns to be used for the main detection.
    Type: Application
    Filed: November 26, 2007
    Publication date: June 5, 2008
    Inventors: Norio TOMITA, Yoshikazu Harada, Tetsushi Ito, Showtaro Okamoto, Tetsuya Yamaguchi, Yoshiteru Kikuchi
  • Publication number: 20080123139
    Abstract: An image forming apparatus including: an output image forming section for forming an image and a pattern on a supporting medium under a prescribed condition; an output section for transferring the formed image on a recording sheet; a correction section for performing reading of the formed pattern and correcting the condition based on a result of the reading; and a correction control section for controlling operations of the output image forming section, the output section, and the correction section, wherein the correction control section identifies whether or not an area where the image is to be formed and an area where the pattern is to be formed overlap each other, and when the areas are identified that they do not overlap each other, the correction control section controls the output image forming section to simultaneously form the image and the pattern in parallel on the supporting medium.
    Type: Application
    Filed: November 28, 2007
    Publication date: May 29, 2008
    Inventors: Yoshikazu Harada, Norio Tomito, Tetsushi Ito, Showtaro Okamoto, Tetsuya Yamaguchi, Yoshiteru Kikuchi
  • Patent number: 7373627
    Abstract: A method of designing a wiring structure of an LSI is capable of reducing a capacitance variation ratio ?C/C or a resistance-by-capacitance variation ratio ?(RC)/(RC) of the wiring structure.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: May 13, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Naoyuki Shigyo, Tetsuya Yamaguchi
  • Publication number: 20080012088
    Abstract: An n/p?/p+ substrate where a p?-type epitaxial layer and an n-type epitaxial layer have been deposited on a p+-type substrate is provided. In the surface region of the n-type epitaxial layer, the n-type region of a photoelectric conversion part has been formed. Furthermore, a barrier layer composed of a p-type semiconductor region has been formed so as to enclose the n-type region of the photoelectric conversion part in a plane and reach the p?-type epitaxial layer from the substrate surface. A p-type semiconductor region has also been formed at a chip cutting part for dividing the substrate into individual devices so as to reach the p?-type epitaxial layer from the substrate surface.
    Type: Application
    Filed: July 12, 2007
    Publication date: January 17, 2008
    Inventors: Tetsuya YAMAGUCHI, Hiroshige Goto, Hirofumi Yamashita, Ikuko Inoue, Nagataka Tanaka, Hisanori Ihara
  • Patent number: 7259412
    Abstract: A solid state imaging device includes a substrate of a first conductivity type. A transistor, which includes a first gate electrode and a first and second impurity areas, is provided on a surface of the substrate. The first and second impurity areas are formed in the surface of the substrate and sandwich a region under the first gate electrode. A third impurity area of a second conductivity type is formed in the surface of the substrate and spaced from the second impurity area at an opposite side to the first gate electrode. A fourth impurity area is formed under the second impurity area and connected to the third impurity area. A second gate electrode is provided above the substrate. A fifth impurity area of the second conductivity type is formed in the surface of the substrate. The third and fifth impurity areas sandwich a region under the second gate electrode.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: August 21, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tetsuya Yamaguchi, Hiroshige Goto, Masayuki Ayabe, Hisanori Ihara
  • Publication number: 20070167283
    Abstract: A hydraulic control apparatus, provided with a manual shift valve that outputs a forward range pressure and a reverse range pressure, and a linear solenoid valve that outputs an engagement pressure to the hydraulic servo that engages during reverse travel when energized, includes a fourth clutch relay valve that is interposed between the linear solenoid valve and the hydraulic servo. The fourth clutch relay valve communicates an engagement pressure of the linear solenoid valve to the hydraulic servo by locking in the normal position when a signal pressure of the solenoid valve is input, and communicates a reverse range pressure to the hydraulic servo by being switched to a fail position by the reverse range pressure during a failure in which the fourth clutch relay valve is de-energized. Thereby, it is possible to establish a reverse speed during a failure in which the solenoid valve is de-energized.
    Type: Application
    Filed: December 22, 2006
    Publication date: July 19, 2007
    Inventors: Nobuhiro Sato, Tetsuya Yamaguchi, Kazuyuki Noda, Akira Fukatsu, Mikio Iwase, Kazutoshi Nozaki, Atsushi Honda
  • Publication number: 20070161449
    Abstract: A hydraulic control apparatus for a multi-stage automatic transmission includes solenoid valves such as the linear solenoid valves that are formed as normally closed valves. A first clutch apply relay valves that outputs a forward range pressure as a reverse input pressure during an all-solenoid-off mode, and a second clutch apply relay valves that switches between a left half position that inputs a reverse input pressure to a discharge port and a right half position that inputs the reverse pressure to the discharge port are provided. The second clutch apply relay valve is set to the right half position during normal engine startup and locked based on the lock pressure by feeding the line pressure as a lock pressure and is set at the left half position that interrupts the lock pressure after the engine is restarted during all-solenoids-off.
    Type: Application
    Filed: December 22, 2006
    Publication date: July 12, 2007
    Inventors: Takayuki Hayashi, Tetsuya Yamaguchi, Kazuyuki Noda, Minoru Todo, Kazuhisa Ozaki, Kazutoshi Nozaki, Atsushi Honda
  • Publication number: 20070161448
    Abstract: A hydraulic control apparatus for an automatic transmission is provided with a solenoid valve that outputs a signal pressure during a failure and does not output a signal pressure during normal operation and a first clutch apply relay valve that switches between a normal position (the right half position) and a fail position (the left half position) based on this signal pressure are provided. During a failure, fail-safe control is carried out by the first clutch apply relay valve switching to the fail position. This first clutch apply relay valve inputs the engagement pressure of the hydraulic servo from the linear solenoid valve when in the normal position, and is locked in the normal position. Thereby, while the first clutch is engaged, the second brake apply control valve can be switched by the signal pressure of the solenoid valve.
    Type: Application
    Filed: December 22, 2006
    Publication date: July 12, 2007
    Inventors: Nobuhiro Sato, Tetsuya Yamaguchi, Kazuyuki Noda, Akira Fukatsu, Mikio Iwase, Kazutoshi Nozaki, Atsushi Honda
  • Patent number: 7224003
    Abstract: The present invention provides a solid-state image pickup apparatus which is able to easily discharge signal charges in a signal accumulating section and which is free from reduction in the dynamic range of the element, thermal noise in a dark state, an image-lag and so forth even if the pixel size of the MOS solid-state image pickup apparatus is reduced, the voltage of a reading gate is lowered and the concentration in the well is raised. The solid-state image pickup apparatus according to the present invention incorporates a p-type silicon substrate having a surface on which a p+ diffusion layer for constituting a photoelectric conversion region and a drain of a reading MOS field effect transistor are formed. A signal accumulating section formed by an n-type diffusion layer is formed below the p+ diffusion layer. A gate electrode of the MOS field effect transistor is, on the surface of the substrate, formed between the p+ diffusion layer and the drain.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: May 29, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Nobuo Nakamura, Hisanori Ihara, Ikuko Inoue, Hidenori Shibata, Akiko Nomachi, Yoshiyuki Shioyama, Hidetoshi Nozaki, Masako Hori, Akira Makabe, Hiroshi Naruse, Hideki Inokuma, Seigo Abe, Hirofumi Yamashita, Tetsuya Yamaguchi