Patents by Inventor Gilford C. Fisher

Gilford C. Fisher 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).

  • Method and apparatus for encrypting and decrypting data to/from an ESCON tape system
    Patent number: 7873828
    Abstract: A method and apparatus for encrypting data written to an Enterprise System Connection (ESCON) tape system and reading encrypted data from such a tape system and decrypting the encrypted data is described. One illustrative embodiment, in writing encrypted data to an ESCON tape system, receives from a computer over a first ESCON link a command to write a data block of specified size to the ESCON tape system; requests data constituting the data block from the computer in sub-blocks; compresses and encrypts each sub-block to produce a corresponding compressed and encrypted sub-block; and transmits to the ESCON tape system over a second ESCON link the compressed and encrypted sub-blocks using a series of chained-data write operations, the transmitted compressed and encrypted sub-blocks forming a compressed and encrypted data block on a tape of the ESCON tape system.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: January 18, 2011
    Assignee: Optica Technologies, Inc.
    Inventors: Joseph F. Gruba, Gilford C. Fisher, Christopher D. Rigg
  • METHOD AND APPARATUS FOR ENCRYPTING AND DECRYPTING DATA TO/FROM AN ESCON TAPE SYSTEM
    Publication number: 20090041234
    Abstract: A method and apparatus for encrypting data written to an Enterprise System Connection (ESCON) tape system and reading encrypted data from such a tape system and decrypting the encrypted data is described. One illustrative embodiment, in writing encrypted data to an ESCON tape system, receives from a computer over a first ESCON link a command to write a data block of specified size to the ESCON tape system; requests data constituting the data block from the computer in sub-blocks; compresses and encrypts each sub-block to produce a corresponding compressed and encrypted sub-block; and transmits to the ESCON tape system over a second ESCON link the compressed and encrypted sub-blocks using a series of chained-data write operations, the transmitted compressed and encrypted sub-blocks forming a compressed and encrypted data block on a tape of the ESCON tape system.
    Type: Application
    Filed: August 7, 2007
    Publication date: February 12, 2009
    Inventors: Joseph F. Gruba, Gilford C. Fisher, Christopher D. Rigg