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:
Aug. 23, 2011
Filed:
Nov. 03, 2009
Applicant:
Masayuki Nakamura, Saitama, JP;
Inventor:
Masayuki Nakamura, Saitama, JP;
Assignee:
Advantest Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/017 (2006.01);
U.S. Cl.
CPC ...
Abstract
There are provided a duty ratio control apparatus for altering a duty ratio of a clock signal to output an altered clock signal, including a first variable delay section that outputs a first delayed clock signal generated by delaying the clock signal by a predetermined first delay time, and a phase comparing section that compares, in terms of phase, an edge of the clock signal and an edge of the first delayed clock signal and generates the altered clock signal having a pulse width determined by a phase difference obtained by the comparison, and a duty ratio control method.