Patents by Inventor Robert Frederick Fischer

Robert Frederick Fischer 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).

  • Fault tolerant magnetic bubble memory
    Patent number: 4056812
    Abstract: A field-access, magnetic bubble memory organized in a major-minor configuration includes an extra set of minor loops dedicated to fault correction. The loops of the extra set are coupled to a major path in a manner to move the information in the loops of the set controllably out of synchronism with respect to the information in the remaining loops. Thus, information in the loops of the extra set can be inserted into the data stream originating from the remaining loops at positions of missing data from faulty ones of those loops.
    Type: Grant
    Filed: May 6, 1976
    Date of Patent: November 1, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Andrew Henry Bobeck, Robert Frederick Fischer
  • Magnetic bubble PROM memory
    Patent number: 4021791
    Abstract: A fast access, major-minor, magnetic bubble memory is provided by defining a separate set of address minor loops in addition to the minor loops of a main storage area in which data is stored. A search operation is restricted to the address loops, selected data being read out of the main storage area only after the selected address is acquired.
    Type: Grant
    Filed: April 20, 1976
    Date of Patent: May 3, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Andrew Henry Bobeck, Robert Frederick Fischer