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. 10, 2000
Filed:
Dec. 28, 1998
Applicant:
Inventor:
Yves Dufour, Sunnyvale, CA (US);
Assignee:
Philips Electronics North America Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
327105 ; 327115 ; 327117 ; 327148 ; 327149 ; 327150 ; 377 48 ;
Abstract
Compensating for phase nonalignment between VCO frequency divider and referenced frequency signal in a fractional-N PLL is provided by compensation implemented by a variable charge pump system. Phase comparator logic is configured to turn ON some of the charge pumps of the charge pump system early and the rest of the charge pumps later. This process effects an equivalent charge being turned ON at the exact point in time for properly compensating for the fractional charge.
Dufour, Yves. (2000). Method and apparatus for performing fractional division charge (U.S. Patent No. 6130561). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6130561
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