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:
Jun. 09, 1987
Filed:
Jul. 23, 1985
Applicant:
Inventor:
Wolfgang Beier, Weil der Stadt, DE;
Assignee:
Standard Elektrik Lorenz Aktiengesellschaft, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04K / ;
U.S. Cl.
CPC ...
375-1 ; 375 38 ; 375 40 ; 375115 ;
Abstract
A receiver for bandspread signals having a pseudo-random code stored in the receiver for synchronization with a pseudo-random code (PRC) of a received and modulated signal for recovering the modulation utilizing control loops. The modulated carrier signal is frequency converted, digitized and then multiplied by the stored PRC. The signal provided is sampled at twice the rate at which the PRC is read out of memory and provided to a counter forming I and Q signals from the counter output values in the control loops for determining a plurality of controlled variables required for synchronization and demodulation.