Patents by Inventor Bay-Wei Chang

Bay-Wei Chang 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).

  • Spreadsheet view enhancement system
    Patent number: 6185582
    Abstract: An augmented spreadsheet presentation provides for selecting a region of user focus in a primary body of data displayed as an array of cells, with two or more displayed cells of the array of cells being logically linked by a constraint graph. Color of two or more displayed cells can be dynamically adjusted in response to selected user focus with a mouse or other cursor, with each of the two or more displayed cells having a slightly different color to form a color gradient that shows constraint graph linkage of the cells. Additional annotations illustrating constraint graph relationships or formulas can also be activated by a transient mouse focus.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: February 6, 2001
    Assignee: Xerox Corporation
    Inventors: Polle T. Zellweger, Jock D. Mackinlay, Bay-Wei Chang, Takeo Igarashi