Patents by Inventor Sai Kai Tsang

Sai Kai Tsang 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 and method for preventing snap back in integrated circuits
    Patent number: 7692483
    Abstract: A method for preventing snap-back in a circuit including at least one MOS transistor having a parasitic bipolar transistor associated with it includes coupling a circuit node including at least one source/drain node of the at least one MOS transistor to a bias-voltage circuit and enabling the bias-voltage circuit to supply a potential to the at least one source/drain node of the at least on MOS transistor, the potential having a magnitude selected to prevent the parasitic bipolar transistor from turning on.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: April 6, 2010
    Assignee: Atmel Corporation
    Inventors: Philip Ng, Sai Kai Tsang, Kris Li, Liqi Wang, Jinshu Son
  • APPARATUS AND METHOD FOR PREVENTING SNAP BACK IN INTEGRATED CIRCUITS
    Publication number: 20090096501
    Abstract: A method for preventing snap-back in a circuit including at least one MOS transistor having a parasitic bipolar transistor associated with it includes coupling a circuit node including at least one source/drain node of the at least one MOS transistor to a bias-voltage circuit and enabling the bias-voltage circuit to supply a potential to the at least one source/drain node of the at least on MOS transistor, the potential having a magnitude selected to prevent the parasitic bipolar transistor from turning on.
    Type: Application
    Filed: October 10, 2007
    Publication date: April 16, 2009
    Applicant: ATMEL CORPORATION
    Inventors: Philip Ng, Sai Kai Tsang, Kris Li, Liqi Wang, Jinshu Son