Patents by Inventor Orvid B. Jeppson

Orvid B. Jeppson 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).

  • Multiple tape thickness, multiple recording format tape drive systems
    Patent number: 5245485
    Abstract: The invention is one or more tape systems which determine the length of tapes mounted therein to assess the thickness of such tapes. A format identifier is written at one of a plurality of locations on the tape depending upon the tape thickness. The format identifier for a relatively thin tape is written further from the leader block than that for a relatively thick tape, thereby avoiding the writing of user data in a region of the tape embossed with wrap deformations. The thickness determination is combined with a determination of the tape format to assess the compatibility of a desired operation on a tape mounted in a tape system therewith. If the operation is not compatible with the tape and the tape system, the tape system will not permit such operation to continue. A method for operating the tape systems is also disclosed, and accounts for various contingencies, such as blank tapes and marginal determinations of tape thickness.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: September 14, 1993
    Assignee: International Business Machines Corporation
    Inventors: Edwin C. Dunn, Orvid B. Jeppson, Steven B. Wilson