The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 28, 2006
Filed:
Feb. 15, 2002
Wade P. Torres, Providence, RI (US);
Alan V. Oppenheim, Lexington, MA (US);
Rodolfo R. Rosales, Boston, MA (US);
Wade P. Torres, Providence, RI (US);
Alan V. Oppenheim, Lexington, MA (US);
Rodolfo R. Rosales, Boston, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
A system for modulating and demodulating signals that provides a new class of signal modulators and their corresponding demodulators. The modulation scheme embeds in an information signal a carrier signal by modulating the oscillatory rate of the carrier signal. The invention generalizes the possible carrier signals to any signal which can be generated by a dynamical system that have a known exponentially convergent observer, as in certain chaotic systems.