Patents by Inventor Francesc Dalmases

Francesc Dalmases 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 and device for encrypting a digital data stream in a transmission system
    Publication number: 20060215735
    Abstract: A method for encrypting a digital data stream (d(k)) by means of a dynamic orthogonal spreading code (g1(k), g2(k)gH(k)) and through the assignment of a hop interval (Ihop), which varies from one connection to another. The degree of encryption is furthermore increased by varying the sequence of use of the content of a set (Gi) of spreading codes, which is defined by stating the positions ({p—1, p—2 . . . p-MI) in a permutation function (Si).
    Type: Application
    Filed: August 3, 2004
    Publication date: September 28, 2006
    Inventors: Francesc Dalmases, Joachim Kahlert