Patents by Inventor Hen-Chang Chang

Hen-Chang Chang 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).

  • 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