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:
Mar. 27, 2012
Filed:
Jan. 31, 2008
Applicants:
Hong-ching Her, Taichung, TW;
Hung-yue Chang, Taichung, TW;
Ton-kun Ho, Taichung, TW;
Inventors:
Assignee:
Merry Electronics Co., Ltd, Taichung, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/10 (2006.01); A61F 11/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
An earphone set includes a main device having a digital signal processor, and an earplug has an external microphone and a speaker electrically connected with the digital signal processor respectively. The external microphone converts an external sound wave into an electronic signal and transmits the electronic signal to the digital signal processor for processing. The speaker converts the electronic signal processed by the digital signal processor into a sound wave for output.