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:
Feb. 21, 2012
Filed:
Mar. 31, 2006
Shinya Suzuki, Shizuoka, JP;
Emi Takahashi, Kanagawa, JP;
Yukinari Inoue, Shizuoka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An earpiece, an electronic device, and a communication device, capable of reducing the influence of leakage of sounds from a clearance between the earpiece and an ear not to need an addition of parts are provided. An earpiece () includes an electromechanical acoustic transducer () having a diaphragm and for generating a sound by vibrating the diaphragm in response to an electric signal, a case () on which a sound hole () is provided and in which the electromechanical acoustic transducer () is housed, and a holding member () for holding the electromechanical acoustic transducer () in the case (). The electromechanical acoustic transducer () has a sound pressure-frequency characteristic that is compensated in advance such that the sound pressure-frequency characteristic is planarized in a condition that the generated sound is leaked from a user's ear () being covered with the case ().