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:
May. 27, 2008
Filed:
May. 19, 2003
Hitomi Wasaki, Legal Representative, Ichihara, JP;
Yoshihiro Saitoh, Chuo-ku, JP;
Hitomi Wasaki, legal representative, Ichihara, JP;
Yoshihiro Saitoh, Chuo-ku, JP;
TDK Corporation, Tokyo, JP;
Abstract
A noise suppressing circuit () suppresses noise emerging from an electronic apparatus () and propagating through conductive lines (and). The noise suppressing circuit () comprises a low-band noise reducing circuit () and a high-band noise reducing circuit (). The low-band noise reducing circuit () is connected to the electronic apparatus () through the conductive lines (and). The high-band noise reducing circuit () is cascade-connected to the low-band noise reducing circuit () and connected to conductive lines (and) of a power line (). The high-band noise reducing circuit () comprises: a detection circuit for detecting common mode noise propagating through the conductive lines (and); a phase-inverted signal generating circuit for generating a phase-inverted signal that has a phase opposite to the phase of the noise detected by the detection circuit; and an injection circuit for injecting the phase-inverted signal generated by the phase-inverted signal generating circuit into the conductive lines (and).