Patents Assigned to 501 Pioneer Electronic Corporation
  • Spindle servo circuit for driving a data storage disk having CLV type recording format
    Patent number: 5170386
    Abstract: A spindle servo circuit for controlling the speed of rotating a disk. The loop gain of the servo loop is changed in response to the change in the linear velocity when the linear velocity is changed by changing the frequency of a master clock. With this feature, stability of the servo characteristic is always assured so that the speed of data recording is increased by the increase in the linear velocity.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: December 8, 1992
    Assignee: 501 Pioneer Electronic Corporation
    Inventor: Kiyoshi Tateishi