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:
Sep. 05, 2006
Filed:
Dec. 22, 2003
Applicant:
Mamoru Kitamura, Niigata, JP;
Inventor:
Mamoru Kitamura, Niigata, JP;
Assignee:
Niigata Seimitsu Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
A digital ΔΣ modulated signal produced by a quantizer () in a ΔΣ modulation processing unit () is put in to a feedback loop before inputted to a power switch () and converted into an analog signal by a D/A converter (). This analog signal is fed back to the input stage (a differentiator ()) of the ΔΣ processing unit () to prevent the switching distortion of the power switch () itself from being introduced into the feedback loop thereby to suppress the influence of the switching distortion.