Patents by Inventor Shuichi Hirosawa

Shuichi Hirosawa 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).

  • Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up
    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
  • Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up
    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
  • Optical disk for adjusting optical pickup, method for adjusting optical pickup, and device for adjusting optical pickup
    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
  • Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up
    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
  • Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up
    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
  • Optical disk for adjusting optical pickup, method for adjusting optical pickup, and device for adjusting optical pickup
    Publication number: 20020126589
    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: August 17, 2001
    Publication date: September 12, 2002
    Inventors: Yasuo Osada, Junzo Kumakura, Hideo Nagasaka, Shuichi Hirosawa, Yoshihiro Kajiyama
  • Optical pickup device and optical disc recording and/or reproducing apparatus
    Patent number: 6430143
    Abstract: An optical pickup device for recording and/or reproducing the information on or from an optical disc.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: August 6, 2002
    Assignee: Sony Corporation
    Inventors: Yoshihiro Kajiyama, Junzo Kumakura, Yasuo Osada, Toshiyuki Kuroiwa, Hideo Nagasaka, Kaneshiro Kondo, Yutaka Shimada, Katsuo Matsumoto, Hiroshi Ishizeki, Shuichi Hirosawa, Yoshio Sugihara