Patents Assigned to Laser File Inc.
  • Color television encoding and decoding system
    Patent number: 4261007
    Abstract: A color image is recorded on film at the television field rate with alternate film frames representing the luminance and chrominance information. The chrominance information is encoded by filtering the color image through a striped color filter. On playback two line scanners are used to simultaneously scan the luminance and chrominance frames to provide the desired information simultaneously. A decoding signal is used to decode the encoded chrominance information and derive color-difference signals.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: April 7, 1981
    Assignee: Laser-File Inc.
    Inventors: Hugh F. Frohbach, Robert E. Myers, Norman A. Peppers, Thomas L. Siwecki, Louis F. Schaefer, Albert Macovski
  • 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