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:
Dec. 10, 2013
Filed:
Mar. 27, 2009
Rikuo Takano, Tsukuba, JP;
Kiyoshi Sugiyama, Mitaka, JP;
Toshimi Fukuoka, Yokohama, JP;
Masatoshi Ono, Tsukuba, JP;
Ryusuke Horibe, Daito, JP;
Fuminori Tanaka, Daito, JP;
Hideki Chouji, Daito, JP;
Takeshi Inoda, Daito, JP;
Rikuo Takano, Tsukuba, JP;
Kiyoshi Sugiyama, Mitaka, JP;
Toshimi Fukuoka, Yokohama, JP;
Masatoshi Ono, Tsukuba, JP;
Ryusuke Horibe, Daito, JP;
Fuminori Tanaka, Daito, JP;
Hideki Chouji, Daito, JP;
Takeshi Inoda, Daito, JP;
Funai Electric Co., Ltd., Osaka, JP;
Funai Electric Advanced Applied Technology Research Institute Inc., Osaka, JP;
Abstract
A microphone unitof the present invention includes a casehaving an internal space, a partition memberwhich is provided in the case, and at least partially composed of a vibrating membrane, that splits the internal space into a first spaceand a second space, and an electrical signal output circuitthat outputs an electrical signal on the basis of vibration of the vibrating membrane. A first through holethrough which the first spaceand an external space of the case are communicated with each other, and a second through holethrough which the second spaceand the external space of the case are communicated with each other are formed in the case. In accordance with the present invention, it is possible to provide a high-quality microphone unit whose outer shape is small and which is capable of performing thorough noise cancellation.