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  • NEAR-FIELD HYBRID MAGNETIC-OPTICAL HEAD SYSTEM
    Publication number: 20040202054
    Abstract: A hybrid magnetic-optical head apparatus wherein one or more solid state lasers, magnetic field biasing elements, magnetic sensing elements, and an aerodynamically shaped slider comprise a single integrated, monolithic device fabricated from the same base semiconductor material into an optical head. The monolithic optical head can be quickly and easily attached to the read arm of an optical read/write device without requiring attachment of separate laser and magnetic elements, and without micropositioning or use of optical microscopy for positioning the lasers or magnetic elements. The hybrid magnetic-optical head apparatus includes a magnetic-optical function region having a semiconductor laser and at least one magnetic element. Preferably, the magnetic-optical function region of the substrate includes a magnetic field biasing element associated with the semiconductor laser, as well as a magnetic sensing element.
    Type: Application
    Filed: December 27, 2000
    Publication date: October 14, 2004
    Inventors: Lambertus Hesselink, Douglas G. Stinson, Robert L. Thornton, Roger F. Malmhall
  • Near-field hybrid magnetic-optical head system
    Publication number: 20050030883
    Abstract: A hybrid magnetic-optical head apparatus wherein one or more solid state lasers, magnetic field biasing elements, magnetic sensing elements, and an aerodynamically shaped slider comprise a single integrated, monolithic device fabricated from the same base semiconductor material into an optical head. The monolithic optical head can be quickly and easily attached to the read arm of an optical read/write device without requiring attachment of separate laser and magnetic elements, and without micropositioning or use of optical microscopy for positioning the lasers or magnetic elements. The hybrid magnetic-optical head apparatus includes a magnetic-optical function region having a semiconductor laser and at least one magnetic element. Preferably, the magnetic-optical function region of the substrate includes a magnetic field biasing element associated with the semiconductor laser, as well as a magnetic sensing element.
    Type: Application
    Filed: September 13, 2004
    Publication date: February 10, 2005
    Inventors: Lambertus Hesselink, Douglas Stinson, Robert Thornton, Roger Malmahall
  • Near-field hybrid magnetic-optical head system
    Patent number: 6807131
    Abstract: A hybrid magnetic-optical head apparatus wherein one or more solid state lasers, magnetic field biasing elements, magnetic sensing elements, and an aerodynamically shaped slider comprise a single integrated, monolithic device fabricated from the same base semiconductor material into an optical head. The monolithic optical head can be quickly and easily attached to the read arm of an optical read/write device without requiring attachment of separate laser and magnetic elements, and without micropositioning or use of optical microscopy for positioning the lasers or magnetic elements. The hybrid magnetic-optical head apparatus includes a magnetic-optical function region having a semiconductor laser and at least one magnetic element. Preferably, the magnetic-optical function region of the substrate includes a magnetic field biasing element associated with the semiconductor laser, as well as a magnetic sensing element.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: October 19, 2004
    Assignee: Research Investment Network, Inc.
    Inventors: Lambertus Hesselink, Douglas G. Stinson, Robert L. Thornton, Roger F. Malmhäll
  • Managed peer-to-peer applications, systems and methods for distributed data access and storage
    Publication number: 20050114711
    Abstract: Applications, systems and methods for securely and remotely operating a remote computer from a local computer over a network while providing seamless, firewall-compliant connectivity. Secure and remote operation includes authenticating at least one remote computer for connection to at least one computer over the network and/or at least one local computer for connection to at least one remote computer over the network; establishing a secure connection between the at least one local computer and the at least one remote computer over the network; and integrating a desktop of at least one remote computer on a display of at least one local computer. The connections may be made over a public network, as well as through multiple firewalls without loss of functionality.
    Type: Application
    Filed: November 13, 2004
    Publication date: May 26, 2005
    Inventors: Lambertus Hesselink, Dharmarus Rizal, Eric Bjornson
  • Method for encoding and decoding digital data in holographic storage media
    Patent number: 5450218
    Abstract: A method for encoding and decoding digital data for storage in a holographic medium (12). Digital data, consisting of binary data (B.sub.i) or grey scale data (A.sub.i), is encoded in bit groups or digit groups (B.sub.k, A.sub.k) containing at least k=1 bits or digits, respectively, by assigning to each bit group (B.sub.k) one reference bit (B.sub.r) and to each digit group (A.sub.k) two reference digits (A.sub.r1, A.sub.r2), assigning the bits of group (B.sub.k) to information bits (B.sub.j), assigning the digits of group (A.sub.k) to information digits (A.sub.j), assigning the reference bit (B.sub.r) and information digits (B.sub.j) to a reference pixel (P.sub.r) and information pixels (P.sub.j) chosen from pixels (24) of a holographic signal modulator (18), and assigning the reference digits (A.sub.r1, A.sub.r2) and information digits (A.sub.j) to reference pixels (P.sub.r1, P.sub.r2) and information pixels (P.sub.j) chosen from pixels (24) of the holographic signal modulator (18).
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: September 12, 1995
    Assignee: Board of Trustees of the Leland Stanford Junior University
    Inventors: John F. Heanue, Matthew C. Bashaw, Lambertus Hesselink
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