Patents by Inventor Vincent S. Yip

Vincent S. Yip 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).

  • Disk volume virtualization block-level caching
    Patent number: 6957294
    Abstract: The present invention provides systems and methods for allocating a pool of global memory among a set of client/servers so that storage volumes associated with a plurality of client/servers are each allocated a portion of the pool of global memory for caching of data from that volume. The amount of memory to be used for caching the volume's input/output operations (I/Os), the page size, the cache type, the cache replacement policy and the maximum cache read can be specified by volume. The amount of memory to be used for caching the volume's input/output operations, the cache type, the cache replacement policy and the maximum cache read I/O size can be changed dynamically by the changing volume-based attributes.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: October 18, 2005
    Assignee: Unisys Corporation
    Inventors: Michael J. Saunders, Vincent S. Yip, Joseph P. Neill, Richard Grzegorek, James R. Hunter