Patents by Inventor Toyonori Igata

Toyonori Igata 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).

  • Tilt control mechanism
    Patent number: 5124973
    Abstract: A tilt control mechanism for maintaining an optical axis of an information detecting beam, emitted from an optical pickup (1) carried by a linearly movable carriage (3), perpendicular to an information recording surface of an information recording disk. The tilt control mechanism includes a carrying member (7) connected to the carriage (3) so as to either be movable or rotatable in the direction perpendicular to the information recording surface, the pickup (1) being carried by the carrying member (7) so as to be rotatable about a fulcrum on the optical axis. A detection device detects the fluctuation in separation distance beween the objective lens (4) of the pickup (1) and the information recording surface so that the carrying member (7) can be displayed or rotated relative to the carriage (3) in accordance with the output of the detection device.
    Type: Grant
    Filed: January 4, 1989
    Date of Patent: June 23, 1992
    Assignee: Pioneer Electronic Corporation
    Inventor: Toyonori Igata
  • Compact optical pickup apparatus for optical disc player
    Patent number: 5107476
    Abstract: An optical pickup apparatus is disclosed which comprises an optical detector formed on a substrate for detecting light reflected by a recording medium, a pattern formed on the substrate, a first block on which the substrate is fixed, a first reference surface formed on the first block substantially in parallel with an optical axis of the light to be detected, a second block arranged to be movable so as to be adjusted in a plane perpendicular to the optical axis and to support the first block, a second reference surface formed on the second block so as to correspondingly contact with the first reference surface; and a relay substrate fixed on the second block and electrically connected to the pattern.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: April 21, 1992
    Assignee: Pioneer Electronic Corporation
    Inventor: Toyonori Igata
  • Compact optical pickup apparatus for optical disk player
    Patent number: 4945524
    Abstract: An optical pickup apparatus is disclosed which comprises an optical detector formed on a substrate for detecting light reflected by a recording medium, a pattern formed on the substrate, a first block on which the substrate is fixed, a first reference surface formed on the first block substantially in parallel with an optical axis of the light to be detected, a second block arranged to be movable so as to be adjusted in a plane perpendicular to the optical axis and to support the first block, a second reference surface formed on the second block so as to correspondingly contact with the first reference surface; and a relay substrate fixed on the second block and electrically connected to the pattern.
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: July 31, 1990
    Assignee: Pioneer Electronic Corporation
    Inventor: Toyonori Igata