Patents by Inventor I-Chang Jou

I-Chang Jou 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).

  • High performance gray-level watermarking system
    Patent number: 7055037
    Abstract: The present invention relates to a gray-level watermarking system, in which sub-band and codebook technique are applied, and the feature of progressive transformation is utilized so as to randomly and evenly distribute the watermark to the entire data with the robustness and the visibility reduced. A four-fold key system is developed with encrypted key to exact the watermark, thus forming a system capable of protecting internet-transmitted multimedia signals such as audio, video ones that are combined with the watermark from being detected or attacked.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: May 30, 2006
    Assignee: National Kaohsiung First University of Science and Technology
    Inventors: Shih-Chang Hsia, I-Chang Jou
  • Method and apparatus for quantifying a rapid immunochromatographic test
    Publication number: 20050059160
    Abstract: A method for quantifying a rapid immunochromatographic test includes the steps of: acquiring a digital image of a rapid immunochromatographic test with an image acquiring unit, acquiring at least one main characteristics of the digital image with a characteristics acquiring unit, calculating and quantifying the main characteristics of the digital image with a neural-network quantifying unit, and sending results of the quantification to an output unit.
    Type: Application
    Filed: October 23, 2003
    Publication date: March 17, 2005
    Inventors: Hansen-H. Tsai, Cheng-Yang Huang, Heng-Chang Chang, Jeng-Lung Chen, I-Chang Jou
  • Apparatus for recognizing counterfeit currency and method thereof
    Publication number: 20040213448
    Abstract: Apparatus and method for recognizing counterfeit currency are disclosed. The apparatus comprises capture unit for capturing a digital image of a currency bill to be recognized, a data storage for storing parameters, features, weights, and a feature identification instruction, feature-capturing unit for capturing features of the bill, neural network recognition unit for comparing the features of the bill with that of an authentic bill by performing an back propagation algorithm and using a plastic perception network as a training kernel, and output means for displaying a comparison result.
    Type: Application
    Filed: April 28, 2003
    Publication date: October 28, 2004
    Applicant: ASN Technology Corp.
    Inventors: I-Chang Jou, Hen-Chang Chang
  • High performance gray-level watermarking system
    Publication number: 20030172274
    Abstract: The present invention relates to a gray-level watermarking system, in which sub-band and codebook technique are applied, and the feature of progressive transformation is utilized so as to randomly and evenly distribute the watermark to the entire data with the robustness and the visibility reduced. A four-fold key system is developed with encrypted key to exact the watermark, thus forming a system capable of protecting internet-transmitted multimedia signals such as audio, video ones that are combined with the watermark from being detected or attacked.
    Type: Application
    Filed: March 6, 2002
    Publication date: September 11, 2003
    Inventors: Shih-Chang Hsia, I-Chang Jou