Patents by Inventor Andrew McKenzie Fraser

Andrew McKenzie Fraser 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).

  • Patent number: 9578205
    Abstract: A method of forming a halftone screen, the method comprising: representing a first tone range by forming a plurality of dots arranged in a grid; representing a second tone range by forming a plurality of substantially cross-shaped dots arranged in a grid, the cross-shaped dots contained within respective dot cells and having four arms, a distal end of at least one of the arms wider than a proximal end, the second tone range darker than the first tone range; and representing a third tone range by forming a plurality of substantially cross-shaped dots arranged in a grid, the cross-shaped dots contained within respective dot cells and having four arms, a proximal end of at least one of the arms wider than the proximal end of at least one arm of the cross-shaped dots representing the second tone range, the third tone range darker than the second tone range.
    Type: Grant
    Filed: December 15, 2013
    Date of Patent: February 21, 2017
    Assignee: Megadot Systems Limited
    Inventors: William Frederick Ashworth, Andrew McKenzie Fraser
  • Patent number: 9208418
    Abstract: A method of forming a halftone screen comprising representing each of a first, second, third and fourth tone range of increasing darkness by forming a plurality of dots arranged in a grid; the dots representing the second tone range larger than the dots representing the first tone range; the dots representing the third tone range having a body section and at least one extension extending toward a or respective nearest neighbor(s), the extension(s) narrower in width than the body section, the dots representing the third tone range substantially the same size as the dots representing the second tone range; and the dots representing the fourth tone range having a body section and at least one extension extending toward a or respective nearest neighbor(s), the extension(s) greater in width than the extension(s) associated with the dots representing the third tone range. A halftone screen and a printing system are also disclosed.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: December 8, 2015
    Assignee: Megadot Systems Limited
    Inventors: William Frederick Ashworth, Andrew McKenzie Fraser
  • Publication number: 20150341526
    Abstract: A method of forming a halftone screen, the method comprising: representing a first tone range by forming a plurality of dots arranged in a grid; representing a second tone range by forming a plurality of substantially cross-shaped dots arranged in a grid, the cross-shaped dots contained within respective dot cells and having four arms, a distal end of at least one of the arms wider than a proximal end, the second tone range darker than the first tone range; and representing a third tone range by forming a plurality of substantially cross-shaped dots arranged in a grid, the cross-shaped dots contained within respective dot cells and having four arms, a proximal end of at least one of the arms wider than the proximal end of at least one arm of the cross-shaped dots representing the second tone range, the third tone range darker than the second tone range.
    Type: Application
    Filed: December 15, 2013
    Publication date: November 26, 2015
    Applicant: MEGADOT SYSTEMS LIMITED
    Inventors: William Frederick Ashworth, Andrew McKenzie Fraser
  • Publication number: 20140340716
    Abstract: A method of forming a halftone screen comprising representing each of a first, second, third and fourth tone range of increasing darkness by forming a plurality of dots arranged in a grid; the dots representing the second tone range larger than the dots representing the first tone range; the dots representing the third tone range having a body section and at least one extension extending toward a or respective nearest neighbour(s), the extension(s) narrower in width than the body section, the dots representing the third tone range substantially the same size as the dots representing the second tone range; and the dots representing the fourth tone range having a body section and at least one extension extending toward a or respective nearest neighbour(s), the extension(s) greater in width than the extension(s) associated with the dots representing the third tone range. A halftone screen and a printing system are also disclosed.
    Type: Application
    Filed: December 3, 2012
    Publication date: November 20, 2014
    Applicant: MEGADOT SYSTEMS LIMITED
    Inventors: William Frederick Ashworth, Andrew McKenzie Fraser