Patents by Inventor Le Jun Shao

Le Jun Shao 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).

  • Bit map character convertor using chain-codes for the character filling process
    Patent number: 5600772
    Abstract: A data converting apparatus and process for converting outline representations of a character into its bit mapped form using two buffers one being for the bit mapped form of the character symbol and the other for the chain-code representation of the outline of the character are disclosed. Three steps are utilized in the process. The first step draws the character outline on to the drawing buffer and generates the chain-code representation with flags to indicate contour collisions. The contours are then scanned one more time to add missing flags on the chain-code representation. Finally, the inside part of the contour on the drawing buffer is filled using the chain-code representations of the contour, to provide a filled character.
    Type: Grant
    Filed: August 17, 1994
    Date of Patent: February 4, 1997
    Assignee: Printronix, Inc.
    Inventors: Hao Zhou, Le Jun Shao