Patents by Inventor Herman H Schmit

Herman H Schmit 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).

  • Method of securing programmable logic configuration data
    Patent number: 7711964
    Abstract: The present invention relates to a secure method of distributing configuration data for a programmable logic device (PLD). The configuration data is encrypted to generate encrypted configuration data. A decryption key is encrypted using a silicon key. The encrypted configuration data and the encrypted decryption key are transferred to a PLD. Within the PLD, the encrypted decryption key is decrypted using the silicon key. Then, also within the PLD, the encrypted configuration data is decrypted using the decryption key to recover the configuration data. The PLD is then configured using the configuration data. The silicon key may be communicated to the PLD by tying predetermined input pins to an active high voltage level or signal ground, to form a binary code.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: May 4, 2010
    Assignee: Carnegie Mellon University
    Inventors: Brian Christopher Van Essen, Jeffrey Wayne Kidd, Christopher Maverick Petersen, Herman H. Schmit
  • Method of securing programmable logic configuration data
    Patent number: 7197647
    Abstract: The present invention relates to a secure method of distributing configuration data for a programmable logic device (PLD). The configuration data is encrypted to generate encrypted configuration data. A decryption key is encrypted using a silicon key. The encrypted configuration data and the encrypted decryption key are transferred to a PLD. Within the PLD, the encrypted decryption key is decrypted using the silicon key. Then, also within the PLD, the encrypted configuration data is decrypted using the decryption key to recover the configuration data. The PLD is then configured using the configuration data. The silicon key may be communicated to the PLD by tying predetermined input pins to an active high voltage level or signal ground, to form a binary code.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: March 27, 2007
    Assignee: Carnegie Mellon University
    Inventors: Brian Christopher Van Essen, Jeffrey Wayne Kidd, Christopher Maverick Petersen, Herman H. Schmit
  • Multiple power supply circuit architecture
    Patent number: 6366061
    Abstract: A multiple power supply circuit architecture, such as a circuit power system including a first voltage rail, a first reference rail, a second voltage rail, a second reference rail, and a first selective connector between the first and second voltage rails.
    Type: Grant
    Filed: January 13, 1999
    Date of Patent: April 2, 2002
    Assignee: Carnegie Mellon University
    Inventors: L. Richard Carley, Ram K. Krishnamurthy, Akshay Aggarwal, Herman H Schmit