Patents by Inventor Shigeru Kojima

Shigeru Kojima 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: 20060001644
    Abstract: A component in a horizontal direction (the x-axis component) of a movement amount first acquired after a pointing device is reset and a component in a vertical direction (the y-axis component) are compared, a movement input is regarded as provided only in the horizontal direction in case the absolute value of the x-axis component is larger than the absolute value of the y-axis component, a movement input is regarded as provided only in the vertical direction in case the absolute value of the y-axis component is larger than the absolute value of the x-axis component, a movement input is regarded as provided in the same direction unless the ratio of components of movement inputs is greatly changed subsequently, and continuous movement inputs in the same direction are facilitated.
    Type: Application
    Filed: August 1, 2003
    Publication date: January 5, 2006
    Inventors: Kazuya Arakawa, Toshinori Furuhashi, Shigeru Kojima
  • Patent number: 6971115
    Abstract: The optical pickup moving mechanism includes: a feed screw and a guide shaft, which are arranged in parallel with each other, for movably supporting an optical pickup; and a drive motor for giving a drive force to the feed screw so that the optical pickup can be moved along a recording medium. The skew adjusting mechanism of the optical pickup for adjusting a skew of the optical pickup adjusts a skew of the optical pickup when the feed screw and the guide shaft are respectively moved and adjusted.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: November 29, 2005
    Assignee: Pioneer Corporation
    Inventors: Shigeru Kojima, Kenji Nakamura, Yasuhiro Shinkai, Kenji Uchiyama, Takashi Shimizu
  • Publication number: 20050248231
    Abstract: A motor includes: a stator provided with a plurality of coils, a rotor provided rotatably with respect to the stator, a first magnet which is mounted on the rotor and which faces one end of each of the plurality of coils, and a second magnet which is mounted on the rotor and which faces the other end of each of the plurality of coils.
    Type: Application
    Filed: March 24, 2005
    Publication date: November 10, 2005
    Inventors: Shigeru Kojima, Akira Yasaki, Norio Matsuda, Hideki Kinoshita, Hitoshi Yamazaki, Jun Togashi
  • Publication number: 20050218857
    Abstract: A stepping motor driving system includes: a stepping motor that rotates at a predetermined angle according to a driving pulse signal, a vibration detector that detects vibration to output a vibration signal, and a stepping motor control unit that controls the driving pulse signal, which is applied to the stepping motor, to rotate the stepping motor at the predetermined angle. The driving pulse signal includes a start-up current which is required for rotating the stepping motor at a unit angle and a holding current which maintains a rotational angle of the stepping motor rotated by the start-up current. The stepping motor control unit changes the level of the holding current according to the vibration signal which is outputted from the vibration detector.
    Type: Application
    Filed: March 24, 2005
    Publication date: October 6, 2005
    Inventors: Hitoshi Yamazaki, Takeshi Nishimura, Akira Yasaki, Hideki Kinoshita, Shigeru Kojima, Jun Togashi
  • Publication number: 20050219965
    Abstract: A record medium reproduction unit has a main casing, a transfer device, a pair of sensing pins, a sensing device, and a decision device. The transfer device transfers a larger disk record medium and a smaller disk record medium into and out of the main casing. The sensing pins are movable toward and away from each other and each contact an outer edge of the larger disk record medium when the larger disk record medium enters the main casing. The decision device determines which is inserted into the main casing, the larger disk record medium, the smaller disk record medium, or a special form record medium such as a card-shaped CD based on information supplied from the pair of sensing pins.
    Type: Application
    Filed: March 31, 2005
    Publication date: October 6, 2005
    Inventors: Hideki Kinoshita, Jun Togashi, Akira Yasaki, Shigeru Kojima, Norio Matsuda, Hitoshi Yamazaki
  • Patent number: 6933734
    Abstract: The vehicle controller performs the overheat detection on the resistor of an electric vehicle that consumes power generated at a time of braking as Joule heat of the resistor, and includes: a calculator (15) for calculating a resistance value (R) of the braking resistor (11) from a current value (I) of a current flowing through a braking resistor (11) and a voltage value (V) of a voltage generated between both ends of the braking resistor (11); and a comparator (16) for comparing the resistance value (R) calculated by the calculator (15) and a resistance value (Rmax) at an allowable temperature of the braking resistor (11) that has been calculated in advance, and when the resistance value (R) is larger, judging that the overheat is detected from the braking resistor (11).
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: August 23, 2005
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Shigeru Kojima
  • Publication number: 20050173095
    Abstract: The air conditioner capacitor is arranged at the front side of the oil cooler or the radiator against the flow of the cooling air, thereby carrying out maintenance of the oil cooler and/or the radiator at the rear side without removing the air conditioner capacitor arranged at the front side, thus improving maintenance. The turbocharger cooler 11 is structured to change the postures so as to swing up and down between the cooling posture in which the turbocharger cooler 11 is arranged in parallel with the radiator 8 and an open posture in which the turbocharger cooler 11 is arranged such that the front side of the radiator 8 is exposed.
    Type: Application
    Filed: September 17, 2003
    Publication date: August 11, 2005
    Applicant: SHIN CATERPILLAR MITSUBISHI LTD
    Inventors: Kouhei Fujita, Kenichi Yokota, Kyoko Yamada, Shigeru Kojima, Atsushi Yamakawa, Takao Masayasu, Takahiro Okudaira, Masafumi Iguchi
  • Publication number: 20050168705
    Abstract: An image projector that modifies projected images.
    Type: Application
    Filed: February 2, 2004
    Publication date: August 4, 2005
    Inventors: Baoxin Li, Shigeru Kojima, Toshinori Furuhashi, Kazuya Arakawa, Ryohichi Yonezawa
  • Publication number: 20050024606
    Abstract: An image projector that modifies projected images.
    Type: Application
    Filed: July 29, 2003
    Publication date: February 3, 2005
    Inventors: Baoxin Li, Shigeru Kojima, Toshinori Furuhashi, Kazuya Arakawa, Ryohichi Yonezawa
  • Publication number: 20050001635
    Abstract: The vehicle controller performs the overheat detection on the resistor of an electric vehicle that consumes power generated at a time of braking as Joule heat of the resistor, and includes: a calculator (15) for calculating a resistance value (R) of the braking resistor (11) from a current value (I) of a current flowing through a braking resistor (11) and a voltage value (V) of a voltage generated between both ends of the braking resistor (11); and a comparator (16) for comparing the resistance value (R) calculated by the calculator (15) and a resistance value (Rmax) at an allowable temperature of the braking resistor (11) that has been calculated in advance, and when the resistance value (R) is larger, judging that the overheat is detected from the braking resistor (11).
    Type: Application
    Filed: April 1, 2004
    Publication date: January 6, 2005
    Inventor: Shigeru Kojima
  • Publication number: 20040251098
    Abstract: A shock absorber includes a cylindrical shock absorber body, a mounting portion 4 disposed bulgingly in an outer surface of the shock absorber body, and a spring seat 3 inserted into the shock absorber body and engaged with the mounting portion 4, supporting a suspension spring. The mounting portion 4 has, on the top face, a flat face portion perpendicular to an axis of the shock absorber body. The spring seat 3 includes a cylindrical seat body15, a seat portion 16 projected from an outer side of the cylindrical seat body 15 and an engagement portion 18 projected from an inner side of the cylindrical seat body 15. Further a travel stop device is disposed between the spring seat 3 and the mounting portion 4, thereby to stop relative rotation and upward/downward-direction travel thereof.
    Type: Application
    Filed: June 9, 2004
    Publication date: December 16, 2004
    Inventor: Shigeru Kojima
  • Patent number: 6806505
    Abstract: There is provided a light emitting device and a process for producing the same in that the light emission efficiency is high, the range of selection of the material is broad, and a device array of a large area can be formed. On a substrate 11 comprising quartz glass, an n-type clad layer 12 comprising a non-single crystal body of n-type AlGaN, a light emitting layer 13 containing plural microcrystals 13a comprising ZnO, and a p-type clad layer 14 comprising a non-single crystal body of p-type BN are laminated in this order. Between the n-type clad layer 12 and the p-type clad layer 14, an insulating layer 15 is formed to fill the gap among the microcrystals 13a to prevent a leaking electric current. The insulating layer 15 is formed by oxidizing the surface of the n-type clad layer 12.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: October 19, 2004
    Assignee: Sony Corporation
    Inventors: Shigeru Kojima, Katsuya Shirai, Yoshifumi Mori, Atsushi Toda
  • Publication number: 20040145099
    Abstract: This invention provides a mono-tube type shock absorber comprising: a cylinder having one closed end, a free piston sliding portion, a piston sliding portion, and a bearing portion provided in an end portion of the cylinder and having a pass through portion; a free piston slidably provided within of free piston sliding portion of the cylinder, the free piston dividing an inside of the cylinder into a gas chamber and an oil chamber; a piston slidably provided within of free piston sliding portion of the cylinder, the piston dividing the oil chamber into two oil chambers; a rod having one end fixed to the piston, the rod being provided to pass through the bearing portion so as to be capable of projection and retraction with respect to the cylinder; and a sealing portion provided in a through portion of the bearing portion, wherein an inner diameter of the free piston sliding portion of the cylinder, in which the free piston slides, is set larger than an inner diameter of the piston sliding portion of the cylind
    Type: Application
    Filed: January 13, 2004
    Publication date: July 29, 2004
    Inventor: Shigeru Kojima
  • Publication number: 20040107430
    Abstract: There is provided a clamp mechanism for clamping and unclamping an information recording disk to be loaded on a loading plane of a turntable. The clamp mechanism comprises a plurality of holders and a driving device. The holders each holds the disk loaded on the loading plane of the turntable. The driving device drives the holders in both of a holding direction along which the disk is held and an un-holding direction along which the disk is released from being held. At least one of plural holders is configured to press, in a direction parallel to the loading plane, the disk loaded on the turntable.
    Type: Application
    Filed: November 24, 2003
    Publication date: June 3, 2004
    Applicant: PIONEER CORPORATION
    Inventors: Kenji Nakamura, Yasuhiro Shinkai, Shigeru Kojima, Kenji Uchiyama
  • Publication number: 20040095296
    Abstract: A plasma display device such that fluctuation of discharge start voltage and lowering of luminance would not easily occur, the burning phenomenon of the screen is suppressed, and excellent reliability and long life can be secured, and a method of producing the same, are disclosed. The plasma display device comprises a first panel (10) provided with discharge sustaining electrodes (12) and a dielectric layer (14) on the inside thereof, and a second panel (20) laminated on the first panel (10) so that discharge spaces (4) are formed on the inside of the first panel (10), and the trap density and/or the movable metallic ion density in the dielectric layer (14) is not more than 1×1018 pieces/cm3, preferably not more than 1×1017 pieces/cm3.
    Type: Application
    Filed: April 11, 2003
    Publication date: May 20, 2004
    Inventors: Shigeru Kojima, Toshiharu Suzuki, Katsuya Shirai
  • Publication number: 20040027977
    Abstract: The optical pickup moving mechanism includes: a feed screw and a guide shaft, which are arranged in parallel with each other, for movably supporting an optical pickup; and a drive motor for giving a drive force to the feed screw so that the optical pickup can be moved along a recording medium. The skew adjusting mechanism of the optical pickup for adjusting a skew of the optical pickup adjusts a skew of the optical pickup when the feed screw and the guide shaft are respectively moved and adjusted.
    Type: Application
    Filed: August 5, 2003
    Publication date: February 12, 2004
    Applicant: PIONEER CORPORATION
    Inventors: Shigeru Kojima, Kenji Nakamura, Yasuhiro Shinkai, Kenji Uchiyama, Takashi Shimizu
  • Publication number: 20040027978
    Abstract: A clamp/alignment mechanism has: a turntable on which a recording medium is mounted, the turntable being rotated by a rotation driving device; a holding device for holding the recording medium mounted on the turntable; an aligning device for aligning the recording medium mounted on the turntable; and a driving device for driving both the holding device and the alignment device. The driving device is configured to drive the aligning device in an aligning direction along which the recording medium is subjected to alignment thereof, in cases where the holding device is driven in a holding direction in which the recording medium is to be held.
    Type: Application
    Filed: August 7, 2003
    Publication date: February 12, 2004
    Applicant: PIONEER CORPORATION
    Inventors: Yasuhiro Shinkai, Shigeru Kojima, Kenji Nakamura, Kenji Uchiyama
  • Publication number: 20030235123
    Abstract: An information reproducing apparatus is provided with: a clamping device (900) capable of clamping and clamp-releasing a recording medium (100), a rotating device (20) for rotating the recording medium clamped by the clamping device; a reading device (30) disposed opposite to an information record surface of the recording medium for reading information recorded on the information record surface of the recording medium; a driving device (34, 34D, 32) capable of moving the reading device in a radial direction of the recording medium; and a linkage device (24, 83, 85) for linking a clamping or clamp-releasing action by the clamping device with a movement of the reading device by the driving device.
    Type: Application
    Filed: June 12, 2003
    Publication date: December 25, 2003
    Applicant: PIONEER CORPORATION
    Inventors: Yasuhisa Okamoto, Takashi Sasaki, Shinichi Naohara, Kazunori Matsuo, Masao Yoshida, Yasuhiro Shinkai, Kenji Nakamura, Shigeru Kojima, Kenji Uchiyama
  • Patent number: 6639354
    Abstract: An n-type cladding layer formed of a non-single crystal body of n-type AlGaN, a light emitting layer containing a plurality of micro-crystals made from ZnO, and a p-type cladding layer formed of a non-single crystal body of p-type BN are sequentially stacked on a substrate made from quartz glass. An insulating layer is formed between the n-type cladding layer and the p-type cladding layer in such a manner as to bury spaces between the micro-crystals, to thereby prevent occurrence of leakage current. The insulating layer is formed by oxidizing the surface of the n-type cladding layer. Since the light emitting layer contains the plurality of micro-crystals improved in crystallinity, it is possible to enhance the emission efficiency, to extend the selection range of each of materials for forming the light emitting layer, n-type cladding layer, p-type cladding layer, and substrate, and to form a device array on a common substrate having a large area.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: October 28, 2003
    Assignee: Sony Corporation
    Inventors: Shigeru Kojima, Katsuya Shirai, Yoshifumi Mori, Atsushi Toda
  • Publication number: 20030038757
    Abstract: A plasma display apparatus according to the present invention includes a dischargeable gas sealed between a pair of substrates joined to each other. A first electrode Y and a second electrode X are formed on one substrate in correspondence with each scanning line. A third electrode H is formed on the other substrate in correspondence with each data line. The first electrode Y, the second electrode X, and the third electrode H are driven to sequentially write data at an intersection of each scanning line and each data line and retain the data at the intersection, and thereby display one field of image. Waveforms of driving signals applied to the first electrode Y and the second electrode X are interchanged between fields or within a field, and thereby alternating-current driving is performed. Thus, damage to a dielectric covering the electrodes and a protective film on the dielectric is minimized, whereby decrease in reliability can be prevented.
    Type: Application
    Filed: August 14, 2002
    Publication date: February 27, 2003
    Inventor: Shigeru Kojima