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. 18, 2013
Filed:
Jan. 02, 2008
Applicants:
Takeo Inoue, Hirakata, JP;
Hideki Ohashi, Kyoto, JP;
Inventors:
Takeo Inoue, Hirakata, JP;
Hideki Ohashi, Kyoto, JP;
Assignees:
Semiconductor Components Industries, LLC, Phoenix, AZ (US);
Sanyo Semiconductor Co., Ltd., Gunma, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 15/00 (2006.01); H04B 3/20 (2006.01); H04M 9/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A filter coefficient setting device for setting a filter coefficient of an echo prevention device including a first FIR filter, and a second FIR filter, comprises: a filter coefficient initial setting portion configured to set a predetermined filter coefficient for the first and second FIR filters when the echo prevention device is started.