Patents by Inventor Stefania Perri

Stefania Perri 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).

  • Charge pump based subsystem for secure smart-card design
    Publication number: 20070176670
    Abstract: A smart card includes a power source, a processing chip, and a charge-pump subsystem for powering the processing chip. The charge-pump subsystem includes a capacitor which is connected cyclically to the power source to charge the capacitor, to the processing chip to power the processing chip, and to ground to discharge the capacitor. The charge-pump subsystem can include three such capacitors so that while one of them is charging, another is powering the processing chip, and a third is discharging. The charge-pump subsystem blocks attempts to discover a secret key in the processing chip by decorrelating power consumption from the internal operations of the processing device.
    Type: Application
    Filed: January 13, 2006
    Publication date: August 2, 2007
    Inventors: Pasquale Corsonello, Martin Margala, Stefania Perri