Patents by Inventor Ronald G. Danisewicz

Ronald G. Danisewicz 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 segmenting line drawings from text within a binary digital image
    Patent number: 6233353
    Abstract: A system that identifies and discriminates between image regions that consist of text lines of alphanumeric characters and image regions that largely consist of non-alphanumeric line-drawing components. Only image components which are determined to be alphanumeric characters are submitted to an OCR program, thus saving processing time and avoiding errors. The system mainly exploits the principle that text blocks in an image are characterized by regularly spaced horizontal runs of white consistent with inter-line spaces.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: May 15, 2001
    Assignee: Xerox Corporation
    Inventor: Ronald G. Danisewicz
  • Digital speech coder having improved long term lag parameter determination
    Patent number: 5097508
    Abstract: A method and apparatus is provided for determining the lag of a long term filter in a code excited linear prediction speech coder. An open loop lag is first determined using an autocorrelation function. The open loop lag is then utilized to generate a limited range over which a closed loop search is performed. The range for appropriate values includes lags that are harmonically related to the open loop lag as well as adjacent lags.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: March 17, 1992
    Assignee: Codex Corporation
    Inventors: Reinaldo A. Valenzuela Steude, Ronald G. Danisewicz