Patents by Inventor Becky Laiping Chang

Becky Laiping 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).

  • Encoding technique for software and hardware
    Patent number: 6088452
    Abstract: An encoding technique of the invention protects software programs and hardware designs from being copied, tampered with, and its functions from being exposed. The software programs and hardware designs (collectively called programs) thus encoded still remain executable. The encoding technique employs the concept of complexity of programs and produces proximity inversion in terms of functions contained in the programs, while preserving the behaviors. Various embodiments are possible to achieve this encoding which includes, for example, cascading and intertwining of blocks of the programs.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: July 11, 2000
    Assignee: Northern Telecom Limited
    Inventors: Harold Joseph Johnson, Yuan Xiang Gu, Becky Laiping Chang, Stanley Taihai Chow