Patents by Inventor Frank E. Sousa

Frank E. Sousa 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).

  • Magnetic disk memory
    Patent number: 4281356
    Abstract: In the apparatus disclosed herein, data recorded on a floppy disk in double density MFM mode is read back using a digital, adaptive time base system which permits accurate recovery of data despite bit shifting due to a high bit density on the magnetic recording surface. The adaptive time base provides successive data windows of non-uniform duration following detection of a data bit and, further, alters the starting reference time based upon the relation of the just received data bit to its predecessor.
    Type: Grant
    Filed: November 28, 1979
    Date of Patent: July 28, 1981
    Assignee: R. C. Sanders Technology Systems, Inc.
    Inventor: Frank E. Sousa