Patents Assigned to Terastor Corp.
  • Beam focusing in near-field optical recording and reading
    Patent number: 6496468
    Abstract: A near-field optical storage system having an optical train configured to produce a reduced beam spot size at the recording layer of an optical medium. A near-field coupling element having a substantially flat surface is implemented to provide optical coupling between the optical train and the optical medium. The flat surface is spaced from the optical medium by a fraction of the operating wavelength. An optical beam is focused beyond the flat surface in order to achieve a small spot size on the recording layer.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: December 17, 2002
    Assignee: Terastor Corp.
    Inventors: Roger Hajjar, Gordon S. Kino
  • Edge detection for servo signals in optical storage system
    Patent number: 6487148
    Abstract: An edge detection system for detecting pre-formatted marks on a disk surface using reflected beams of optical signals. The detector include at least two separate sensing areas to analyze the energy distribution of the reflected beam to generate an edge detecting signal.
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: November 26, 2002
    Assignee: Terastor Corp.
    Inventor: Yung-Chieh Hsieh