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:
Feb. 03, 1981
Filed:
Aug. 24, 1978
Applicant:
Inventor:
Hagen Hofmeister, Korb, DE;
Assignee:
Licentia Patent-Verwaltungs-G.m.b.H, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370100 ; 375106 ;
Abstract
A method and apparatus for recovering the timing frequency in a modulated data signal receiver containing a timing frequency generator, by demodulating a received signal with the aid of carriers which are shifted by 90.degree. in phase relative to one another to form two demodulation products, forming the sum of the squares of the two demodulation products, and determining changes in the value of that sum with respect to time to provide characteristic values which determine the adjustment criterion for the timing frequency generator.