Patents by Inventor Stein Klevdal

Stein Klevdal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7256969
    Abstract: A method and system are provided for implementing discrete step stabilization of AMR read sensors in tape or disk drives. In one implementation, a plurality of discrete step stabilizers and AMR read sensor elements are arranged with a rotational symmetry coupled with a plane inversion for an odd number of steps, and no inversion for an even number of steps. Preferably, the steps are oriented at 45 degrees, or approximately parallel to the desired bias direction. For relatively narrow track widths (e.g., approximately 5 microns), the edges of the sensor element nearest the permanent magnets are especially important to stabilize. Therefore, in one implementation, an edge of a stabilizer preferably intersects the edge of the sensor element at one half of the stripe height. Also, the rising and falling edges of the stabilizers do not always have the same slope.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: August 14, 2007
    Assignee: Storage Technology Corporation
    Inventors: Carl Stephen Arnold, Edward Virgil Denison, Carl Anthony Helms, Stein Klevdal, Kevin D. McKinstry, Mark Lee Watson