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. 21, 2006
Filed:
Jul. 21, 2004
Applicant:
Alberto O. Adan, Nara, JP;
Inventor:
Alberto O. Adan, Nara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A phase locked loop circuit includes a phase comparator and a charge-pump circuit. The phase comparator and the charge-pump circuit are configured to satisfy the relationship of K>Kin an I−Δφ characteristic, where Kindicates a slope Kin the case where |Δφ|>Δφ, Kindicates a slope Kin the case where |Δφ|≦Δφ, Kbeing defined by K=dI/dΔφ, and Δφbeing a constant indicating a predetermined phase error.