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. 26, 2007
Filed:
Feb. 12, 2004
Applicants:
Yoshitaka Yoshino, Tokyo, JP;
Minoru Oozeki, Kanagawa, JP;
Toshiyuki Imagawa, Saitama, JP;
Inventors:
Assignee:
Sony Corporation, , JP;
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
An earphone antenna in which a balun is connected to one side and the other side having an audio/high-frequency dual-function signal connecting the earphone unit via a loading coil and wireless equipment connected to the balun, the loading coil selecting low impedance for fundamental frequency and selecting to obtain high impedance for higher frequencies, in order to integrate earphone and antenna.