Patents by Inventor Robert E. Wolff

Robert E. Wolff 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).

  • Motor control of tape tension in a belt cartridge
    Patent number: 5649672
    Abstract: A drive and tape cartridge provide motor control for the tape tension in a belt-driven tape cartridge. Two different rollers drive the belt, and are controlled by two separate motors. This allows reduction in the friction required in the system and allows optimal sizing of the motors.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: July 22, 1997
    Assignee: Imation Corp.
    Inventors: Robert E. Wolff, Jerry L. Alexander
  • Direct file access system for magnetic tape
    Patent number: 5572378
    Abstract: A direct file access system for a magnetic tape where all data files begin at a designated location on the tape. The direct file access system may be used with a reduced rewind data configuration to decrease data access time. The reduced rewind data configuration divides data files into generally equal portions so that data files begin and end at the designated location on the tape, eliminating rewind sequences. A method and system for reducing the number of tape retensioning passes is included to further decrease access time.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: November 5, 1996
    Assignee: Imation Corp.
    Inventors: Theodore A. Schwarz, Robert E. Wolff, Robert J. Youngquist
  • High capacity data cartridge system and preformatted cartridge for use therein
    Patent number: 4422111
    Abstract: A data cartridge recorder is disclosed in which a preformatted tape is employed to enable automatic detection of the beginning of the tape and the end of the tape as well as of the location of preidentifiable record locations positioned along a plurality of parallel tracks.
    Type: Grant
    Filed: August 20, 1981
    Date of Patent: December 20, 1983
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gary D. Moeller, Robert E. Wolff