Patents by Inventor Curtis D. Mursfeldt

Curtis D. Mursfeldt 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 installing a decryption key
    Patent number: 7203319
    Abstract: An apparatus for installing a decryption key is initially arranged so that a decryption algorithm received by a control processor is passed via a first interface path to a decryption processor. The algorithm is installed in the decryption processor together with a program decryption key. The apparatus is subsequently arranged so that encrypted working decryption keys received by the control processor are passed on to the decryption processor over the first interface path. The decryption processor decrypts the encrypted keys using the program decryption key. Decryption keys are thus obtained and are transferred via a second interface path to decryptors for use in decrypting encrypted program signals input to the decryptors.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: April 10, 2007
    Assignee: Qualcomm, Inc.
    Inventors: Liat Ben-Zur, Curtis D. Mursfeldt, Christopher Wingert, Paul Pomes, Jesse Hose, Ann C. Irvine, Senthil Govindaswamy
  • Apparatus and method for installing a decryption key
    Publication number: 20030007643
    Abstract: An apparatus for installing a decryption key is initially arranged so that a decryption algorithm received by a control processor is passed via a first interface path to a decryption processor. The algorithm is installed in the decryption processor together with a program decryption key. The apparatus is subsequently arranged so that encrypted working decryption keys received by the control processor are passed on to the decryption processor over the first interface path. The decryption processor decrypts the encrypted keys using the program decryption key. Decryption keys are thus obtained and are transferred via a second interface path to decryptors for use in decrypting encrypted program signals input to the decryptors.
    Type: Application
    Filed: July 9, 2001
    Publication date: January 9, 2003
    Inventors: Liat Ben-Zur, Curtis D. Mursfeldt, Christopher Wingert, Paul Pomes, Jesse Hose, Ann C. Irvine, Senthil Govindaswamy