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.:

US 7787581 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 31, 2010

Filed:

Jan. 29, 2007
Applicant:

Joakim Landmark, Uppsala, SE;

Inventor:

Joakim Landmark, Uppsala, SE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D 3/24 (2006.01);
U.S. Cl.
CPC ...
Abstract

The invention relates to a phase-locked loop circuit including a phase detector, loop filter and an oscillator. The loop filter is implemented digitally instead of by means of analog components. The chip area required for such a digital loop filter is substantially smaller than an analog equivalence and can be implemented on a single integrated circuit die together with an oscillator, phase detector and possible counters. There is thus no need for the use of external components, greatly simplifying the design and manufacture of the circuit, and having reduced assemblage costs. Further, by means of the digital filter the loop dynamics are also easily changed.


Find Patent Forward Citations

Landmark, Joakim. (2010). Phase locked loop circuitry (U.S. Patent No. 7787581). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7787581

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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