Patents by Inventor William Stubkjaer

William Stubkjaer 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: 7181641
    Abstract: Techniques are provided for verifying the integrity of data written onto a memory device under test. A pseudo random number generator generates data patterns based on a known ‘seed’ that includes a date and time. A data storage system writes the data patterns onto the memory device under test and a reference drive. The data storage system then reads the data patterns from the memory device under test and the reference drive. Alternatively, the seed value is stored in the second memory device instead of the data pattern, and subsequently, the data storage system reads the seed value from the second memory device and regenerates the data pattern. The expected data patterns from the reference drive are compared to the data read from the memory device under test to verify whether the data storage system is operating properly.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: February 20, 2007
    Assignee: Hitachi Global Storage Technologies Netherlands, B.V.
    Inventors: Robert Greenwald, William Stubkjaer
  • Publication number: 20050066237
    Abstract: Techniques are provided for verifying the integrity of data written onto a memory device under test. A pseudo random number generator generates data patterns based on a known ‘seed’ that includes a date and time. A data storage system writes the data patterns onto the memory device under test and a reference drive. The data storage system then reads the data patterns from the memory device under test and the reference drive. Alternatively, the seed value is stored in the second memory device instead of the data pattern, and subsequently, the data storage system reads the seed value from the second memory device and regenerates the data pattern. The expected data patterns from the reference drive are compared to the data read from the memory device under test to verify whether the data storage system is operating properly.
    Type: Application
    Filed: September 24, 2003
    Publication date: March 24, 2005
    Applicant: Hitachi Global Storage Technologies Netherlands, B.V.
    Inventors: Robert Greenwald, William Stubkjaer