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:
Apr. 13, 2010
Filed:
Sep. 15, 2003
Applicants:
Chu-ting Su, Hsinchu, TW;
Yi-shu Chang, Tainan, TW;
Wen-chi Wang, Siluo Township, Yunlin County, TW;
Inventors:
Chu-Ting Su, Hsinchu, TW;
Yi-Shu Chang, Tainan, TW;
Wen-Chi Wang, Siluo Township, Yunlin County, TW;
Assignee:
Realtek Semiconductor Corp., Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus and method of automatic identification an external audio input/output device. The external device connected to an audio jack is identified as an audio output or input device, according to the impedance thereof. Furthermore, the present invention automatically selects the most suitable internal circuit to connect to the external device.