Patents by Inventor Philip J. Erdelsky

Philip J. Erdelsky 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).

  • Virtual addressing of optical storage media as magnetic tape equivalents
    Patent number: 5455926
    Abstract: An optical disk storage system emulates a magnetic tape subsystem by virtual addressing of data recorded on write once optical disk media having a predetermined group of available sectors for rewriting a disk ID, a predetermined plurality of bands of available sectors for rewriting a virtual tape directory to virtual tape VSNs, and, available sectors for rewriting virtual tape maps and rewriting user records, the tape maps have data portions for simulating tape marks and interblock gap and for addressing blocks of data within the virtual tapes, the virtual tape directory has pointers for pointing to tape maps, and the system rewrites the tape directory, tape maps and user records so as to function as a rewritable magnetic tape.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: October 3, 1995
    Assignee: Data/Ware Development, Inc.
    Inventors: Richard V. Keele, Craig D. Mautner, Tracy J. Thorpe, Sidney R. Thompson, Michael C. Goodsell, Philip J. Erdelsky