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:
Jun. 20, 2006
Filed:
Aug. 12, 1999
Kensaku Abe, Tokyo, JP;
Kazuhisa Kito, Tokyo, JP;
Hirofumi Nishimoto, Tokyo, JP;
Keiko Yabuki, Tokyo, JP;
Kensaku Abe, Tokyo, JP;
Kazuhisa Kito, Tokyo, JP;
Hirofumi Nishimoto, Tokyo, JP;
Keiko Yabuki, Tokyo, JP;
Sony Corporation, , JP;
Abstract
A headphone sectionhaving microphone elementsL,R for detecting a sound around the user and signal acoustic transducing elementsL,R which function as a sound source for canceling the sound around the user housed in the headphone boxesL,R and a control circuit sectionthat includes a noise canceling headphone together with the headphone sectionare separately configured. The control circuit sectionis adjusted in such a manner that variation can be reduced and predetermined frequency characteristics and gain characteristics are achieved at a predetermined frequency. To the headphone section, gain adjusting sectionsL,R are equipped.