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:
Mar. 12, 2013
Filed:
May. 12, 2011
Applicant:
Ryoichi Yamaguchi, Kanagawa, JP;
Inventor:
Ryoichi Yamaguchi, Kanagawa, JP;
Assignee:
Renesas Electronics Corporation, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A digital noise filter circuit includes a gating clock generating circuit and a noise filter circuit. The gating clock generating circuit compares logic levels of an input signal and an output signal of the noise filter circuit. The gating clock generating circuit supplies a gating clock as an operating clock to the noise filter circuit when the logic levels of both signals do not coincide, and halts supply of the gating clock when the logic levels of both signals do coincide. The noise filter circuit removes noise from the input signal and outputting the resultant signal as the output signal.