Patents by Inventor David Michael Hyde

David Michael Hyde 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).

  • System for locking down part of portion of memory and updating page directory with entry corresponding to part of portion of the memory locked down
    Patent number: 5675762
    Abstract: A method and apparatus are disclosed for providing exchange of data between a peripheral device having a paging mechanism and an application operating in a virtual machine which includes a page directory for exclusive use by the paging mechanism of the peripheral device. The virtual machine is running on a data processing system and preferably contains a block of memory which is divided into various sections of memory. The page directory is provided to the paging mechanism of the peripheral device when the application requires the use of the peripheral device. A section of memory is selectively locked down in response to the section of memory being utilized by the application. Additionally, the page directory is updated with an entry which identifies the section of memory that is locked down. Memory may also be locked down in order to permit the peripheral device to access that section of memory.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: October 7, 1997
    Assignee: International Business Machines Corporation
    Inventors: William Kress Bodin, David Michael Hyde, Tatchi Placido Lay, James Wilkinson, Susan Yee