Patents by Inventor Leroy J. Thompson

Leroy J. Thompson 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).

  • Method for detecting data encoded as state transitions in a read signal
    Patent number: 5969894
    Abstract: A data detection circuit for a read channel that recovers data encoded as the presence or absence of flux transitions on a magnetic recording medium, compares a current data sample of a read signal with a previous data sample and a threshold to determine whether the previous data sample represents a flux transition. The use of two data samples in the determination of flux transitions provides a more accurate detection of the data than comparing a single data sample to a threshold value. The data detection circuit generates an output data signal having data values based on the determined flux transitions of the data samples.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: October 19, 1999
    Assignee: Seagate Technology, Inc.
    Inventors: Jones V. Howell, Leroy J. Thompson, Gregory A. Unruh
  • System and method for collating and stacking two streams of cut sheets
    Patent number: 5896797
    Abstract: Collating apparatus cuts a strip of paper into two side-by-side streams of individual pages or sheets of paper. These streams of paper are transported on belts such that each sheet in one stream is next to and paired with a sheet in the other stream. Each pair of sheets is stacked by moving one of the sheets onto the other which the other sheets continues to be transported by belt. Each stacked pair of sheets can be stacked on each other.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: April 27, 1999
    Inventor: Leroy J. Thompson
  • Method and an arrangement for detecting state transitions in a read signal during a bit cell timing window
    Patent number: 5892631
    Abstract: A data detection circuit for a read channel that recovers data encoded as the presence or absence of flux transitions on a magnetic recording medium, compares a current data sample of a read signal with a previous data sample and a threshold to determine whether the previous data sample represents a flux transition. The use of two data samples in the determination of flux transitions provides a more accurate detection of the data than comparing a single data sample to a threshold value. The data detection circuit generates an output data signal having data values based on the determined flux transitions of the data samples.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: April 6, 1999
    Assignee: Seagate Technology, Inc.
    Inventors: Jones V. Howell, Leroy J. Thompson, Gregory A. Unruh