Patents by Inventor Alwin Lee

Alwin Lee 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).

  • Method and apparatus for automatically detecting image and character data
    Patent number: 7933446
    Abstract: The present invention discloses a halftone processing of image and text auto detection, which is used to keep both the bit depth of images and the clarity of text when faxing or copying documents. The process of the present invention is stated as follows: choose the background color from the master copy, separate the content of the master copy into images and text with the chosen background color as the criterion, process the images with halftone processing, process the text with line art processing, and then output the processed images and processed text as a whole.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: April 26, 2011
    Assignee: Transpacific Optics LLC
    Inventors: Alwin Lee, Jim Lin
  • Method of image dithering process for detecting photo and character automatically
    Publication number: 20050162702
    Abstract: The present invention discloses a halftone processing of image and text auto detection, which is used to keep both the bit depth of images and the clarity of text when faxing or copying documents. The process of the present invention is stated as follows: choose the background color from the master copy, separate the content of the master copy into images and text with the chosen background color as the criterion, process the images with halftone processing, process the text with link art processing, and then output the processed images and processed text as a whole.
    Type: Application
    Filed: January 28, 2004
    Publication date: July 28, 2005
    Inventors: Alwin Lee, Jim Lin