Patents by Inventor Mark A. Sovik

Mark A. Sovik 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).

  • Access method data compression with system-built generic dictionaries
    Patent number: 5561421
    Abstract: A computer system constructs a compression dictionary for compressing a character string by interrogating an initial substring portion to determine input string characteristics that are used to select one or more dictionary segments from a library of predetermined dictionary segments individually adapted for compressing strings with particular characteristics. The initial substring portion is dynamically determined during the interrogation. A first set of dictionary segments that meet predetermined automatic selection criteria are selected and a second set of candidate dictionary segments that meet second-level selection criteria are identified for a sampling phase. During the sampling phase, the candidate dictionary segments are alternately used to compress the initial substring portion and determine compression performance statistics.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: October 1, 1996
    Assignee: International Business Machines Corporation
    Inventors: Brian J. Smith, Mark A. Sovik, Pong-Sheng Wang, Nancy Y. Young, Ahmad Zandi