Patents by Inventor Hiroshi Deki

Hiroshi Deki 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).

  • System, method and apparatus for data track usage sequence to reduce adjacent track interference effect
    Patent number: 8879180
    Abstract: Storing data in a hard disk drive may include determining a percentage of storage usage (SU %) of the data tracks. If the SU % is less than a first threshold percentage (TP1), the method may include storing data to Nth data tracks. If the SU % is greater than or equal to TP1, but less than a second threshold percentage (TP2), the method may include storing data to about N/2 data tracks between said Nth data tracks. If the SU % is greater than or equal to TP2, the method may include storing data to data tracks between said N/2 data tracks and said Nth data tracks.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: November 4, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Hiroshi Deki, Takayuki Kinoshita
  • SYSTEM, METHOD AND APPARATUS FOR DATA TRACK USAGE SEQUENCE TO REDUCE ADJACENT TRACK INTERFERENCE EFFECT
    Publication number: 20140160589
    Abstract: Storing data in a hard disk drive may include determining a percentage of storage usage (SU %) of the data tracks. If the SU % is less than a first threshold percentage (TP1), the method may include storing data to Nth data tracks. If the SU % is greater than or equal to TP1, but less than a second threshold percentage (TP2), the method may include storing data to about N/2 data tracks between said Nth data tracks. If the SU % is greater than or equal to TP2, the method may include storing data to data tracks between said N/2 data tracks and said Nth data tracks.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 12, 2014
    Applicant: HGST NETHERLANDS B.V.
    Inventors: Hiroshi Deki, Takayuki Kinoshita