Patents by Inventor Yutaka Shimada
Yutaka Shimada 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).
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Publication number: 20070237571Abstract: A universal joint includes a yoke having a fitting portion for fitting a shaft. The fitting portion has first and second tabs opposed to each other to form a U shape. A fixing mechanism including a bolt passing through respective insertion holes in the first and second tabs and a nut screwed onto the bolt on a fastening axis fastens and fixes the shaft between the first and second tabs. A nut holding member fixed to the second tab has an engaging piece. The engaging piece causes the nut, which has not been screwed onto the bolt, to be held on the fastening axis. A cover held by the nut holding member covers at least the engaging piece around the nut.Type: ApplicationFiled: March 28, 2007Publication date: October 11, 2007Applicant: JTEKT CorporationInventors: Yutaka Shimada, Tatsutomo Yokozeki, Takeshi Matsuda
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Publication number: 20070109926Abstract: Disclosed is an adjustment apparatus for adjusting an optical pickup capable of recording and/or reproducing plural optical discs of different sorts. The adjustment apparatus is an optical disc for adjustment (1) having a first signal recording layer (5) having a physical format in common with a CD and a second signal recording layer (7) having a physical format in common with a DVD. On the first and second signal recording layers, there are concentrically recorded EFM modulated data. The respective signal recording layers are provided with recording areas (8), (9) not overlapped with each other.Type: ApplicationFiled: January 3, 2007Publication date: May 17, 2007Applicant: Sony CorporationInventors: Yutaka Shimada, Hideo Nagasaka
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Patent number: 7103895Abstract: An optical pickup device includes a feed screw to move an optical pickup having an objective lens radially on an optical disc, a sliding member provided for slidable movement in relation to the optical pickup, and connected to the optical pickup by a coil spring that forces a shutter in a direction of unmasking the objective lens, and a connection member that connects the feed screw and sliding member to each other. As the feed screw is rotated, the sliding member moves the optical pickup radially on the optical disc, and when the optical pickup has arrived at a position at the lead-in side of the optical disc, the sliding member is further slid against the force of the coil spring to move the shutter and mask the objective lens.Type: GrantFiled: July 11, 2002Date of Patent: September 5, 2006Assignee: Sony CorporationInventors: Yasuo Osada, Yutaka Shimada
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Patent number: 7075163Abstract: In a semiconductor bare chip (57) on the front surface whereof is formed an integrated circuit, a magnetic loss film 55 is formed on the back surface of that semiconductor bare chip.Type: GrantFiled: April 4, 2001Date of Patent: July 11, 2006Assignee: NEC TOKIN CorporationInventors: Shigeyoshi Yoshida, Hiroshi Ono, Yoshio Awakura, Michio Nemoto, Eiji Yamanaka, Masahiro Yamaguchi, Yutaka Shimada
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Patent number: 7073185Abstract: The present invention is relative with an objective lens driving device used in an optical pickup device, and includes a stationary unit, a lens bobbin provided with an objective lens, at least one magnet provided on one of the lens bobbin and the stationary unit, a coil unit provided on the other of the lens bobbin and the stationary unit for causing movement of the lens bobbin in a direction parallel to the optical axis of the objective lens and in a planar direction perpendicular to the optical axis of the objective lens, and an elastic supporting unit of a stainless material, provided between a stationary unit and the lens bobbin. The elastic supporting unit supports the lens bobbin for movement in a direction parallel to the optical axis of the objective lens and in a planar direction perpendicular to the optical axis of the objective lens.Type: GrantFiled: February 28, 2002Date of Patent: July 4, 2006Assignee: Sony CorporationInventors: Yutaka Shimada, Tadayasu Nishikawa
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Patent number: 7000156Abstract: A defect information storing device includes two tables for storing information on defective points of a semiconductor device. The first table stores column addresses and number of defective points existing at this column address for (r×c+c) lines. The second table stores row addresses, number of defective points existing at this row address, and column identifiers indicating the storage place of the column address of the defective point in the first table for (r×c+r) lines.Type: GrantFiled: October 2, 2002Date of Patent: February 14, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yutaka Shimada, Yoshinori Fujiwara
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Patent number: 6972097Abstract: A composite magnetic material is provided for use as an electromagnetic interference suppressing body for effectively suppressing an electromagnetic interference within a high frequency apparatus including a mobile communication terminal. The composite magnetic material consists essentially of a soft magnetic powder and an organic binder and is electrically non-conductive and has at least two magnetic resonances caused by at least two anisotropic magnetic fields (Hk). In the composite magnetic material, the anisotropic magnetic fields (Hk) are different in strength from each other.Type: GrantFiled: September 12, 2003Date of Patent: December 6, 2005Assignee: NEC TOKIN CorporationInventors: Shigeyoshi Yoshida, Mitsuharu Sato, Eishu Sugawara, Yutaka Shimada, Norihiko Ono, Osamu Ito
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Publication number: 20050219986Abstract: The present invention concerns an optical disc for adjusting an optical pickup used for adjusting a pair of optical pickups capable of recording and reproducing a double-sided type optical disc. The optical disc for adjusting the optical pickups comprises: a first signal recording part (5) that is irradiated with a laser beam from one surface side; and a second signal recording part (7) that is irradiated with the laser beam from the other surface side to record data so that a scanning direction by the laser beam is opposite to that of the first signal recording part (5).Type: ApplicationFiled: June 27, 2003Publication date: October 6, 2005Applicant: SONY CORPORATIONInventors: Yutaka Shimada, Hideo Nagasaka
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Publication number: 20050208293Abstract: An electromagnetic noise absorbing thin film has a structure including an inorganic insulating matrix made of oxie, nitride, fluoride, or a mixture thereof and columnar-structured particles made of a pure metal of Fe, Co, or Ni or an alloy containing at least 20 weight % of Fe, Co, or Ni and buried in an inorganic insulating matrix.Type: ApplicationFiled: March 8, 2005Publication date: September 22, 2005Applicant: NEC TOKIN CorporationInventors: Shigeyoshi Yoshida, Hiroshi Ono, Yutaka Shimada, Tetsuo Itoh
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Publication number: 20050181237Abstract: There is provided a perpendicular magnetic recording medium according to which both the thermal stability of the magnetization is good and writing with a magnetic head is easy, and moreover the SNR is improved. In the case of a perpendicular magnetic recording medium comprising a nonmagnetic substratel, and at least a nonmagnetic underlayer 2, a magnetic recording layer 3 and a protective layer 4 formed in this order on the nonmagnetic substrate 1, the magnetic recording layer 3 comprises a low Ku region 31 layer having a perpendicular magnetic anisotropy constant (Ku value) of not more than 1×105 erg/cm3, and a high Ku region 32 layer having a Ku value of at least 1×106 erg/cm3. Moreover, the magnetic recording layer 3 is made to have therein nonmagnetic grain boundaries that contain a nonmagnetic oxide and magnetically isolate crystal grains, which are made of a ferromagnetic metal, from one another.Type: ApplicationFiled: January 10, 2005Publication date: August 18, 2005Inventors: Osamu Kitakami, Yutaka Shimada, Satoshi Okamoto, Takehito Shimatsu, Hajime Aoi, Hiroaki Muraoka, Yoshihisa Nakamura, Hiroyuki Uwazumi, Tadaaki Oikawa
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Publication number: 20050022221Abstract: A disk centering system includes: a disk mount portion having a disk mount surface on which a disk form recording medium is to be mounted, the disk mount portion being provided with a predetermined reference point; and at least three disk centering portions for pressing the outer circumferential edge of the disk form recording medium, the disk centering portions being located in radial directions with the reference point as a center, wherein each of the disk centering portions can be moved between a centering position at which the disk centering portion makes contact with the outer circumferential edge of the disk form recording medium mounted on the disk mount surface to thereby center the disk form recording medium and a stand-by position located on the outer side relative to the centering position, and the centering positions are located at an equal distance from the reference point in the radial directions with the reference point as a center.Type: ApplicationFiled: April 15, 2004Publication date: January 27, 2005Applicant: Sony CorporationInventors: Akihisa Inatani, Yasuo Osada, Toshimasa Takahashi, Yasuhiro Suda, Hiromu Watanabe, Yutaka Shimada, Shuji Koseki, Yuji Sudo
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Publication number: 20040239894Abstract: In a light source apparatus unit, the light source produces white light that is obtained through a light emission caused by ionization of a gas, with laser light being emitted from a semiconductor laser. The light source of such white light can be treated practically as a point light source. In addition, the white light has a uniform band level in a visible light band. Further, an image display apparatus is composed such that monochromatic light for a color image is taken out from such white light to be displayed. With respect to an image displayed by the image display apparatus, a pixel can be made small to the extent to approximate the light source. Furthermore, the monochromatic light displayed is almost uniform in a balance of light emitting intensity without dispersion.Type: ApplicationFiled: April 15, 2004Publication date: December 2, 2004Inventor: Yutaka Shimada
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Publication number: 20040108486Abstract: A composite magnetic material is provided for use as an electromagnetic interference suppressing body for effectively suppressing an electromagnetic interference within a high frequency apparatus including a mobile communication terminal. The composite magnetic material consists essentially of a soft magnetic powder and an organic binder and is electrically non-conductive and has at least two magnetic resonances caused by at lest two anisotropic magnetic fields (Hk). In the composite magnetic material, the anisotropic magnetic fields (Hk) are different in strength from each other.Type: ApplicationFiled: September 12, 2003Publication date: June 10, 2004Inventors: Shigeyoshi Yoshida, Mitsuharu Sato, Eishu Sugawara, Yutaka Shimada, Norihiko Ono, Osamu Ito
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Patent number: 6740171Abstract: A foreign-matter removal capacity is improved in a cleaning process. When a wafer is cleaned while a brush is moved from the center of the wafer toward the outer circumference thereof, a discharge flow rate of cleaning liquid flowing into the brush is regulated so that the interval between the brush and the wafer is kept constant.Type: GrantFiled: February 27, 2002Date of Patent: May 25, 2004Assignee: Renesas Technology Corp.Inventors: Yutaka Shimada, Yasuhiro Mori, Koyo Morita, Kenji Yokoshima
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Publication number: 20030221144Abstract: A defect information storing device includes two tables for storing information on defective points of a semiconductor device. The first table stores column addresses and number of defective points existing on this column address for (r×c+c) lines. The second table stores row addresses, number of defective points existing on this row address, and column identifiers indicating the storage place of the column address of the defective point in the first table for (r×c+r) lines.Type: ApplicationFiled: October 2, 2002Publication date: November 27, 2003Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Yutaka Shimada, Yoshinori Fujiwara
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Publication number: 20030179682Abstract: The optical pickup device according to the present invention includes a feed screw (22) to move an optical pickup (11) having an objective lens (14) provided thereon radially of an optical disc D, a sliding member (24) provided slidably in relation to the optical pickup, and connected to the optical pickup (11) by a coil spring (25) which forces a shutter (47) in a direction of unmasking the objective lens, and a transmission (51) which connects the feed screw and sliding member to each other. As the feed screw is rotated, the sliding member moves the optical pickup radially of the optical disc D, and when the optical pickup has arrived at a position at the lead-in side of the optical disc D, the sliding member is further slid against the force of the coil spring to mask the shutter with the objective lens.Type: ApplicationFiled: March 4, 2003Publication date: September 25, 2003Inventors: Yasou Osada, Yutaka Shimada
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Publication number: 20030179673Abstract: Disclosed is an adjustment apparatus for adjusting an optical pickup capable of recording and/or reproducing plural optical discs of different sorts. The adjustment apparatus is an optical disc for adjustment (1) having a first signal recording layer (5) having a physical format in common with a CD and a second signal recording layer (7) having a physical format in common with a DVD. On the first and second signal recording layers, there are concentrically recorded EFM modulated data. The respective signal recording layers are provided with recording areas (8), (9) not overlapped with each other.Type: ApplicationFiled: March 14, 2003Publication date: September 25, 2003Inventors: Yutaka Shimada, Hideo Nagasaka
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Patent number: 6623789Abstract: A first thin film including at least one transition metal selected from the group consisting of Co, Fe and Ni, and a second thin film including at least one platinum group element selected from the group consisting of Pt and Pd are prepared. Then, a multilayered structure where said first thin film and said second thin film are stacked is formed. Then, the multilayered structure is heated at the same time or after the formation of said multilayered structure, thereby to counter-diffuse constituent elements of said first thin film and said second thin film and alloy said at least one transition metal and said platinum group element.Type: GrantFiled: June 25, 2002Date of Patent: September 23, 2003Assignee: Tohoku UniversityInventors: Yutaka Shimada, Osamu Kitakami, Satoshi Okamoto, Tomoaki Sakurai
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Publication number: 20030161251Abstract: The present invention is relative with an objective lens driving device used in an optical pickup device, and includes a stationary unit, a lens bobbin provided with an objective lens, at least one magnet provided on one of the lens bobbin and the stationary unit, a coil unit provided on the other of the lens bobbin and the stationary unit for causing movement of the lens bobbin in a direction parallel to the optical axis of the objective lens and in a planar direction perpendicular to the optical axis of the objective lens, and an elastic supporting unit of a stainless material, provided between a stationary unit and the lens bobbin. The elastic supporting unit supports the lens bobbin for movement in a direction parallel to the optical axis of the objective lens and in a planar direction perpendicular to the optical axis of the objective lens.Type: ApplicationFiled: March 18, 2003Publication date: August 28, 2003Inventors: Yutaka Shimada, Tadayasu Nishikawa
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Publication number: 20030065996Abstract: According to the present invention, a pseudo-error signal generating circuit is provided between a memory circuit and a self-test circuit. The pseudo-error signal generating circuit converts an output signal of the memory circuit based on a setting signal to supply a pseudo-error signal necessary to verify the operation of the self-test circuit. The pseudo-error signal generating circuit has a scan chain circuit in which a setting signal is set, and generates a pseudo-error signal based on the setting signal.Type: ApplicationFiled: April 10, 2002Publication date: April 3, 2003Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Yutaka Shimada, Yoshinori Fujiwara