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:
Oct. 21, 2008
Filed:
Aug. 05, 2005
Applicants:
Bernd Germann, Brombachtal, DE;
Bardo Müller, Dreieich, DE;
Tomislav Drenski, Dreieich, DE;
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D 3/18 (2006.01); H03D 3/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
A PLL circuit comprises a controller (DRC) adjusting the frequency of frequency modulated signals (u) provided by a frequency modulator (DIV) on the basis of signals provided by a linear range detector (LRD) so that the phase detector gets back into a linear range after a change in the frequency of said frequency modulated signals (u) to a desired frequency. The lock time of the phase-locked loop circuit is improved without the requirement of complex circuitry.