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:
May. 06, 2014
Filed:
Jan. 14, 2010
Applicants:
Chih-chi Wang, Taichung County, TW;
Rong-jen Chang, Taipei County, TW;
Ting-fa Yu, Yunlin County, TW;
Li-wei Fang, Taichung County, TW;
Inventors:
Chih-Chi Wang, Taichung County, TW;
Rong-Jen Chang, Taipei County, TW;
Ting-Fa Yu, Yunlin County, TW;
Li-Wei Fang, Taichung County, TW;
Assignee:
Realtek Semiconductor Corp., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 1/00 (2006.01); H04M 9/08 (2006.01); H04B 1/38 (2006.01); H04B 3/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
An echo signal processing apparatus is disclosed. The echo signal processing apparatus is utilized for generating a cancellation signal by using group phenomenon of a frequency response of an echo signal to remove the echo signal. The echo signal processing apparatus has lower cost and is able to remove the echo efficiently.