Patents by Inventor Laiguang Zeng

Laiguang Zeng 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).

  • Character smoothing in scanners/printers
    Patent number: 6038039
    Abstract: A scanner/printer system for smoothing the edges of text or line art is described having a copyboard for an image original, a CCD, a PCI bus, edge smooth software and a laser printer. The edge smooth software adds variable size fill-in patterns of pixels to the image data scanned by the CCD at low resolution to smooth the edges of text or line art prior to printing at high resolution.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: March 14, 2000
    Assignee: A. B. Dick Company
    Inventor: Laiguang Zeng