Patents by Inventor Allan Yeh

Allan Yeh 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).

  • Intelligent blemish control algorithm and apparatus
    Patent number: 7199824
    Abstract: An image processing method and apparatus is described for processing a signal from a monochrome or color sensor that may be subject to pixel defects or blemishes. Without prior knowledge of any pixel defects, the processing method examines each pixel value and its neighboring pixel values. A number of tests are applied to the set of pixel values to determine whether the underlying pixel is defective. If the underlying pixel is determined to be defective, the pixel value is replaced by an estimate value derived from the values of its neighboring pixels. Otherwise, the pixel value remains intact.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: April 3, 2007
    Assignee: ESS Technology, Inc.
    Inventors: Michael Chang, Allan Yeh, Kou-Hu Tzou
  • Intelligent blemish control algorithm and apparatus
    Publication number: 20060012695
    Abstract: An image processing method and apparatus is described for processing a signal from a monochrome or color sensor that may be subject to pixel defects or blemishes. Without prior knowledge of any pixel defects, the processing method examines each pixel value and its neighboring pixel values. A number of tests are applied to the set of pixel values to determine whether the underlying pixel is defective. If the underlying pixel is determined to be defective, the pixel value is replaced by an estimate value derived from the values of its neighboring pixels. Otherwise, the pixel value remains intact.
    Type: Application
    Filed: August 25, 2005
    Publication date: January 19, 2006
    Applicants: Divio, Inc.
    Inventors: Michael Chang, Allan Yeh, Kou-Hu Tzou
  • Intelligent blemish control algorithm and apparatus
    Patent number: 6985180
    Abstract: An image processing method and apparatus is described for processing a signal from a monochrome or color sensor that may be subject to pixel defects or blemishes. Without prior knowledge of any pixel defects, the processing method examines each pixel value and its neighboring pixel values. A number of tests are applied to the set of pixel values to determine whether the underlying pixel is defective. If the underlying pixel is determined to be defective, the pixel value is replaced by an estimate value derived from the values of its neighboring pixels. Otherwise, the pixel value remains intact.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: January 10, 2006
    Assignee: ESS Technology, Inc.
    Inventors: Michael Chang, Allan Yeh, Kou-Hu Tzou
  • Intelligent blemish control algorithm and apparatus
    Publication number: 20020196354
    Abstract: An image processing method and apparatus is described for processing a signal from a monochrome or color sensor that may be subject to pixel defects or blemishes. Without prior knowledge of any pixel defects, the processing method examines each pixel value and its neighboring pixel values. A number of tests are applied to the set of pixel values to determine whether the underlying pixel is defective. If the underlying pixel is determined to be defective, the pixel value is replaced by an estimate value derived from the values of its neighboring pixels. Otherwise, the pixel value remains intact.
    Type: Application
    Filed: June 19, 2001
    Publication date: December 26, 2002
    Inventors: Michael Chang, Allan Yeh, Kou-Hu Tzou