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:
Jan. 18, 2011
Filed:
Jul. 09, 2009
Applicants:
Toshihiko Mori, Kawasaki, JP;
Masafumi Kondo, Kawasaki, JP;
Inventors:
Toshihiko Mori, Kawasaki, JP;
Masafumi Kondo, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/06 (2006.01); H03L 7/085 (2006.01); H03L 7/087 (2006.01); H03L 7/093 (2006.01); H03L 7/099 (2006.01); H03L 7/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A variance correction method includes generating a reference current depending on a resistance within a lowpass filter and outputting the reference current to a voltage controlled oscillator, and correcting characteristics of the lowpass filter and a gain of the voltage controlled oscillator based on an output clock of the voltage controlled oscillator.