Patents by Inventor Yasuo Osada

Yasuo Osada 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: 7313800
    Abstract: 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: Grant
    Filed: April 15, 2004
    Date of Patent: December 25, 2007
    Assignee: Sony Corporation
    Inventors: Akihisa Inatani, Yasuo Osada, Toshimasa Takahashi, Yasuhiro Suda, Hiromu Watanabe, Yutaka Shimada, Shuji Koseki, Yuji Sudo
  • Patent number: 7249362
    Abstract: A chucking pulley clamps and chucks a recording medium in coaction with a disk table. The chucking pulley has a rotary slide knob and is rotatably supported on a support arm. The support arm has first and second lifting/lowering pins. A holder is mounted on the support arm for pressing the chucking pulley toward the disk table while in contact with an end of the rotary slide knob when the recording medium is in rotation. A spring is resiliently held against the first lifting/lowering pins. Moving members move the chucking pulley toward and away from the disk table. The moving members have retainers for retaining the first lifting/lowering pins in an acting position when the recording medium is chucked. The first lifting/lowering pins retained in the acting position deform the spring to bias the support arm and the holder toward the disk table.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: July 24, 2007
    Assignee: Sony Corporation
    Inventor: Yasuo Osada
  • Patent number: 7219360
    Abstract: A disc chucking mechanism is provided. The disc chucking mechanism includes: a central shaft that served as a motor shaft of a spindle motor; a table section, which is fixed to the central shaft and on which the inner circumferential section of a disc-shaped recording medium is placed; a chucking pulley for sandwiching the internal circumference portion of the disc-shaped recording medium together with the table section; a centering protrusion, which is movably supported by the central shaft in the shaft direction and inserted into a central hole of the disc-shaped recording medium, for centering the disc-shaped recording medium; a forcing means for forcing the centering protrusion to a direction away from the table section in the shaft direction of the central shaft; and a separation-stop shaft having a separation-stop section, which is positioned such that the separation-stop section is substantially parallel to the central shaft.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: May 15, 2007
    Assignee: Sony Corporation
    Inventors: Yasuo Osada, Hiromu Watanabe
  • Patent number: 7174559
    Abstract: Disclosed herein is a disk drive including a base, a spindle motor mounted on the base, a disk table fixed to a motor shaft of the spindle motor and adapted to be rotated about the axis of the motor shaft by the spindle motor, an optical pickup supported movably in the radial direction of a disk-shaped recording medium mounted on the disk table, an installation plate detachably mounted on the base, a guided portion provided on the optical pickup and adapted to be guided during movement of the optical pickup in the radial direction of the disk-shaped recording medium, and a restricted groove formed on the outer circumferential surface of the disk table so as to extend in the circumferential direction of the disk table.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: February 6, 2007
    Assignee: Sony Corporation
    Inventor: Yasuo Osada
  • Patent number: 7103895
    Abstract: 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: Grant
    Filed: July 11, 2002
    Date of Patent: September 5, 2006
    Assignee: Sony Corporation
    Inventors: Yasuo Osada, Yutaka Shimada
  • Patent number: 7020059
    Abstract: An adjustment method for optical pick-up including a light source for emitting light beams, an object lens for irradiating light beams onto an optical disc for adjustment and a drive portion for driving the object lens in a direction in parallel to the optical axis of the object lens and in a direction perpendicular to the optical axis thereof, wherein in the state where the light source is movably held with respect to the object lens and the drive portion is movably held with respect to the light source, light beams are irradiated onto an optical disc for adjustment concentrically having recording tracks from the optical pick-up to adjust relative position of the object lens with respect to the light source and inclination of the optical axis of the object lens, and an optical disc for adjustment used in such an adjustment method.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: March 28, 2006
    Assignee: Sony Corporation
    Inventors: Yasuo Osada, Junzo Kumakura, Hideo Nagasaka, Shuichi Hirosawa, Yoshihiro Kajiyama
  • Patent number: 7012868
    Abstract: An adjustment method for optical pick-up including a light source for emitting light beams, an object lens for irradiating light beams onto an optical disc for adjustment and a drive portion for driving the object lens in a direction in parallel to the optical axis of the object lens and in a direction perpendicular to the optical axis thereof, wherein in the state where the light source is movably held with respect to the object lens and the drive portion is movably held with respect to the light source, light beams are irradiated onto an optical disc for adjustment concentrically having recording tracks from the optical pick-up to adjust relative position of the object lens with respect to the light source and inclination of the optical axis of the object lens, and an optical disc for adjustment used in such an adjustment method.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: March 14, 2006
    Assignee: Sony Corporation
    Inventors: Yasuo Osada, Junzo Kumakura, Hideo Nagasaka, Shuichi Hirosawa, Yoshihiro Kajiyama
  • Patent number: 7006410
    Abstract: An adjustment method for optical pick-up including a light source for emitting light beams, an object lens for irradiating light beams onto an optical disc for adjustment and a drive portion for driving the object lens in a direction in parallel to the optical axis of the object lens and in a direction perpendicular to the optical axis thereof, wherein in the state where the light source is movably held with respect to the object lens and the drive portion is movably held with respect to the light source, light beams are irradiated onto an optical disc for adjustment concentrically having recording tracks from the optical pick-up to adjust relative position of the object lens with respect to the light source and inclination of the optical axis of the object lens, and an optical disc for adjustment used in such an adjustment method.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: February 28, 2006
    Assignee: Sony Corporation
    Inventors: Yasuo Osada, Junzo Kumakura, Hideo Nagasaka, Shuichi Hirosawa, Yoshihiro Kajiyama
  • Patent number: 6983473
    Abstract: This device has an optical pickup section, a first rack portion provided on the optical pickup section, a slide member having an opening/closing portion for opening/closing a facing surface of the objective lens to the optical disc and a second rack portion provided to be slidable on the first rack portion, and a driving mechanism having a driving gear which meshes with the first rack portion and the second rack portion. In this device, when the optical pickup section is moved to a predetermined position, the meshing state of the first rack portion with the driving gear is canceled and the second rack portion is driven by the driving gear to move the slide member, thereby moving the opening/closing portion from a position for opening the facing surface side of the objective lens to a position for closing the facing surface side.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: January 3, 2006
    Assignee: Sony Corporation
    Inventors: Yasuo Osada, Hideo Nagasaka
  • Patent number: 6971114
    Abstract: This device has an optical pickup section, a first rack portion provided on the optical pickup section, a slide member having an opening/closing portion for opening/closing a facing surface of the objective lens to the optical disc and a second rack portion provided to be slidable on the first rack portion, and a driving mechanism having a driving gear which meshes with the first rack portion and the second rack portion. In this device, when the optical pickup section is moved to a predetermined position, the meshing state of the first rack portion with the driving gear is canceled and the second rack portion is driven by the driving gear to move the slide member, thereby moving the opening/closing portion from a position for opening the facing surface side of the objective lens to a position for closing the facing surface side.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: November 29, 2005
    Assignee: Sony Corporation
    Inventors: Yasuo Osada, Hideo Nagasaka
  • Publication number: 20050211498
    Abstract: An electronic apparatus having a structure in which the inside of a cabinet having a speaker unit incorporated therein is effectively cooled, so that the speaker unit satisfactorily plays back a bass sound in which the speaker cabinet has at least two bass-reflex ducts. One bass-reflex duct is used for air-discharge, through which air in the cabinet is discharged by a fan unit, and another bass-reflex duct is used for air-intake. Thus, the inside of the speaker cabinet is effectively cooled while making use of the bass-reflex effect.
    Type: Application
    Filed: March 3, 2005
    Publication date: September 29, 2005
    Inventors: Yasuo Osada, Yutaka Sato
  • Publication number: 20050185555
    Abstract: An adjustment method for optical pick-up including a light source for emitting light beams, an object lens for irradiating light beams onto an optical disc for adjustment and a drive portion for driving the object lens in a direction in parallel to the optical axis of the object lens and in a direction perpendicular to the optical axis thereof, wherein in the state where the light source is movably held with respect to the object lens and the drive portion is movably held with respect to the light source, light beams are irradiated onto an optical disc for adjustment concentrically having recording tracks from the optical pick-up to adjust relative position of the object lens with respect to the light source and inclination of the optical axis of the object lens, and an optical disc for adjustment used in such an adjustment method.
    Type: Application
    Filed: April 20, 2005
    Publication date: August 25, 2005
    Applicant: Sony Corporation
    Inventors: Yasuo Osada, Junzo Kumakura, Hideo Nagasaka, Shuichi Hirosawa, Yoshihiro Kajiyama
  • Publication number: 20050185554
    Abstract: An adjustment method for optical pick-up including a light source for emitting light beams, an object lens for irradiating light beams onto an optical disc for adjustment and a drive portion for driving the object lens in a direction in parallel to the optical axis of the object lens and in a direction perpendicular to the optical axis thereof, wherein in the state where the light source is movably held with respect to the object lens and the drive portion is movably held with respect to the light source, light beams are irradiated onto an optical disc for adjustment concentrically having recording tracks from the optical pick-up to adjust relative position of the object lens with respect to the light source and inclination of the optical axis of the object lens, and an optical disc for adjustment used in such an adjustment method.
    Type: Application
    Filed: April 20, 2005
    Publication date: August 25, 2005
    Applicant: Sony Corporation
    Inventors: Yasuo Osada, Junzo Kumakura, Hideo Nagasaka, Shuichi Hirosawa, Yoshihiro Kajiyama
  • Publication number: 20050157610
    Abstract: This device has an optical pickup section, a first rack portion provided on the optical pickup section, a slide member having an opening/closing portion for opening/closing a facing surface of the objective lens to the optical disc and a second rack portion provided to be slidable on the first rack portion, and a driving mechanism having a driving gear which meshes with the first rack portion and the second rack portion. In this device, when the optical pickup section is moved to a predetermined position, the meshing state of the first rack portion with the driving gear is canceled and the second rack portion is driven by the driving gear to move the slide member, thereby moving the opening/closing portion from a position for opening the facing surface side of the objective lens to a position for closing the facing surface side.
    Type: Application
    Filed: March 17, 2005
    Publication date: July 21, 2005
    Applicant: Sony Corporation
    Inventors: Yasuo Osada, Hideo Nagasaka
  • Publication number: 20050157609
    Abstract: This device has an optical pickup section, a first rack portion provided on the optical pickup section, a slide member having an opening/closing portion for opening/closing a facing surface of the objective lens to the optical disc and a second rack portion provided to be slidable on the first rack portion, and a driving mechanism having a driving gear which meshes with the first rack portion and the second rack portion. In this device, when the optical pickup section is moved to a predetermined position, the meshing state of the first rack portion with the driving gear is canceled and the second rack portion is driven by the driving gear to move the slide member, thereby moving the opening/closing portion from a position for opening the facing surface side of the objective lens to a position for closing the facing surface side.
    Type: Application
    Filed: March 17, 2005
    Publication date: July 21, 2005
    Applicant: Sony Corporation
    Inventors: Yasuo Osada, Hideo Nagasaka
  • Patent number: 6880163
    Abstract: This device has an optical pickup section, a first rack portion provided on the optical pickup section, a slide member having an opening/closing portion for opening/closing a facing surface of the objective lens to the optical disc and a second rack portion provided to be slidable on the first rack portion, and a driving mechanism having a driving gear which meshes with the first rack portion and the second rack portion. In this device, when the optical pickup section is moved to a predetermined position, the meshing state of the first rack portion with the driving gear is canceled and the second rack portion is driven by the driving gear to move the slide member, thereby moving the opening/closing portion from a position for opening the facing surface side of the objective lens to a position for closing the facing surface side.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: April 12, 2005
    Assignee: Sony Corporation
    Inventors: Yasuo Osada, Hideo Nagasaka
  • Publication number: 20050060733
    Abstract: A chucking pulley clamps and chucks a disk-shaped recording medium in coaction with a disk table, the chucking pulley having a rotary slide knob. The chucking pulley is rotatably supported on a support arm. The support arm has first lifting/lowering pins and second lifting/lowering pins. A holder is fixedly mounted on the support arm for pressing the chucking pulley toward the disk table while being held in contact with a distal end of the rotary slide knob when the disk-shaped recording medium is in rotation. A bias spring is resiliently held against the first lifting/lowering pins. Moving members are arranged to move the chucking pulley toward and away from the disk table. The moving members have retainers for retaining the first lifting/lowering pins in an acting position when the disk-shaped recording medium is chucked. The first lifting/lowering pins retained in the acting position elastically deform the bias spring to bias the support arm and the holder to move toward the disk table.
    Type: Application
    Filed: September 1, 2004
    Publication date: March 17, 2005
    Applicant: Sony Corporation
    Inventor: Yasuo Osada
  • Publication number: 20050028181
    Abstract: Disclosed herein is a disk drive including a base, a spindle motor mounted on the base, a disk table fixed to a motor shaft of the spindle motor and adapted to be rotated about the axis of the motor shaft by the spindle motor, an optical pickup supported movably in the radial direction of a disk-shaped recording medium mounted on the disk table, an installation plate detachably mounted on the base, a guided portion provided on the optical pickup and adapted to be guided during movement of the optical pickup in the radial direction of the disk-shaped recording medium, and a restricted groove formed on the outer circumferential surface of the disk table so as to extend in the circumferential direction of the disk table.
    Type: Application
    Filed: June 25, 2004
    Publication date: February 3, 2005
    Applicant: SONY CORPORATION
    Inventor: Yasuo Osada
  • Publication number: 20050022221
    Abstract: 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: Application
    Filed: April 15, 2004
    Publication date: January 27, 2005
    Applicant: Sony Corporation
    Inventors: Akihisa Inatani, Yasuo Osada, Toshimasa Takahashi, Yasuhiro Suda, Hiromu Watanabe, Yutaka Shimada, Shuji Koseki, Yuji Sudo
  • Publication number: 20050010941
    Abstract: A disc chucking mechanism is provided. The disc chucking mechanism includes: a central shaft that served as a motor shaft of a spindle motor; a table section, which is fixed to the central shaft and on which the inner circumferential section of a disc-shaped recording medium is placed; a chucking pulley for sandwiching the internal circumference portion of the disc-shaped recording medium together with the table section; a centering protrusion, which is movably supported by the central shaft in the shaft direction and inserted into a central hole of the disc-shaped recording medium, for centering the disc-shaped recording medium; a forcing means for forcing the centering protrusion to a direction away from the table section in the shaft direction of the central shaft; and a separation-stop shaft having a separation-stop section, which is positioned such that the separation-stop section is substantially parallel to the central shaft.
    Type: Application
    Filed: June 9, 2004
    Publication date: January 13, 2005
    Applicant: Sony Corporation
    Inventors: Yasuo Osada, Hiromu Watanabe