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:
Jul. 04, 2006
Filed:
Feb. 03, 2003
Applicants:
Hans-jürgen Kühn, Buchholz, DE;
Manfred Zupke, Hamburg, DE;
Inventors:
Hans-Jürgen Kühn, Buchholz, DE;
Manfred Zupke, Hamburg, DE;
Assignee:
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a digital phase locked loop (PLL)for demodulating an intermediate frequency signal. The digital phase locked loopcomprises two coordinate rotation digital computersandin its phase detector. The robustness the PLLcan be improved by means of a gain control circuit, a sign detector, a carrier monitoring circuitand an adjustable loop filter