Patents Assigned to Laser File Inc.
  • Disc recording tracking system
    Patent number: 4205338
    Abstract: A prerecorded track on a disc is automatically tracked resulting in a radial tracking signal. Components of this signal are stored during a prerecording interval. During recording these stored components are used to produce a restored radial tracking signal which is used to radially position the recording energy source and keep the newly recorded tracks at a fixed distance from the previously recorded tracks.
    Type: Grant
    Filed: November 3, 1977
    Date of Patent: May 27, 1980
    Assignee: Laser File Inc.
    Inventor: Louis F. Schaefer