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:
Apr. 23, 2013
Filed:
Jul. 01, 2009
Alan J. Michaels, West Melbourne, FL (US);
David B. Chester, Palm Bay, FL (US);
Alan J. Michaels, West Melbourne, FL (US);
David B. Chester, Palm Bay, FL (US);
Harris Corporation, Melbourne, FL (US);
Abstract
Systems () and methods () for selectively controlling access to multiple data streams which are communicated using a shared frequency spectrum and shared spreading codes. The methods involve generating a first product signal (FPS) by spreading first symbols of a first amplitude modulated (AM) signal using a first spreading code (SC). The methods also involve generating a second product signal (SPS) by spreading second symbols of a complimentary AM signal using a second SC. The FPS () and SPSare combined to form a protected data communication signal (PDCS) including first data recoverable by a receiver (). A global data communication signal (GDCS) is combined with PDCS () to form an output signal () having a spread spectrum format. The GDCS is generated using a digital modulation process and includes second data recoverable by a plurality of receivers ().