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:
Apr. 16, 2013
Filed:
Jun. 22, 2011
Applicants:
Tomoo Murata, Hamura, JP;
Takeo Yamashita, Ome, JP;
Inventors:
Tomoo Murata, Hamura, JP;
Takeo Yamashita, Ome, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/017 (2006.01);
U.S. Cl.
CPC ...
Abstract
A duty compensation circuit including a duty detection circuit, a duty adjustment signal generator for generating a control signal from a detected duty, and a duty adjustment circuit, in which the duty detection circuit executes sampling of a clock at sampling timing obtained by causing the clock to be delayed by a variable delay circuit, thereby detecting a duty. Thereby, duty compensation is enabled without preparing a clock higher in operating speed than a clock before compensation.