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:
Nov. 20, 2012
Filed:
Mar. 24, 2008
Applicants:
Masahisa Masuda, Beaverton, OR (US);
Gontaro Kitazumi, Tokyo, JP;
Inventors:
Masahisa Masuda, Beaverton, OR (US);
Gontaro Kitazumi, Tokyo, JP;
Assignee:
Matech, Inc., Lake Oswego, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 9/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A full duplex talking audio circuit uses a single transducer Zwhich, even when various characteristics including the strength of a transmission signal change from moment to moment, enables the adequate operation of an echo canceling function and sufficiently compensates for the deterioration of the frequency characteristics of the transmission signal due to the acoustic transfer characteristics of the human body.
Masuda, Masahisa. (2012). Single transducer full duplex talking circuit (U.S. Patent No. 8315379). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8315379
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile