Patents by Inventor Brent R. Dichoso

Brent R. Dichoso 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).

  • Methods and devices for adaptive margining
    Patent number: 8611031
    Abstract: A data storage device may comprise a disk comprising a plurality of zones, each comprising a plurality of data tracks, a head having a reader spaced away from a writer by a gap, and a controller. The controller may be configured to, upon detecting a media defect in one of the zones: determine a width of data tracks in the zone in which the media defect is detected; calculate a minimum number of contiguous tracks in the zone in which the media defect is detected whose aggregate width is at least as great as the gap between the reader and writer; and margin the detected media defect with a number of tracks immediately adjacent to the detected media defect that is at least equal to the calculated minimum number of contiguous tracks.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: December 17, 2013
    Assignee: Western Digital Technologies, Inc.
    Inventors: Christopher John B. Tan, Brent R. Dichoso, Tom Takan, Kamalam P. Elayappan, Theivarayan Prakash Somasundaram