Patents by Inventor Steve A. Flattum

Steve A. Flattum 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).

  • Fiber channel CRC for internal error checking on a switching platform
    Patent number: 6647528
    Abstract: A method and apparatus is presented for performing a sequence-level CRC calculation on fiber channel communications within a switching platform domain. Specifically, the disclosed invention utilizes a CRC generator to monitor data communication between an external interface and a fiber channel controller. The CRC generator searches the data communication for frames that contain the type of data for which a sequence-level CRC is desired, such as for a sequence containing SCSI data. When found, the CRC generator performs an 8B/10B decode, strips off any fill bytes, and performs a CRC calculation on the data payload. If the found frame is the first frame in the sequence, the CRC is done starting with a reset value. If the frame is not the first, an intermediate value containing the previous CRC calculation results for this sequence is retrieved and used to perform the CRC calculations. Upon completion of the calculation for the frame, a determination is made whether the sequence is complete.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: November 11, 2003
    Assignee: Computer Network Technology Corporation
    Inventors: William C. Collette, Steve A. Flattum, Mark J. Vogel, Bret Ketchum