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:
Mar. 26, 2013
Filed:
Sep. 06, 2006
Applicants:
Takanori Hayashi, Tokyo, JP;
Kazuhisa Yamagishi, Tokyo, JP;
Inventors:
Takanori Hayashi, Tokyo, JP;
Kazuhisa Yamagishi, Tokyo, JP;
Assignee:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 7/14 (2006.01); H04N 9/475 (2006.01);
U.S. Cl.
CPC ...
Abstract
A multi-modal quality estimation unit () estimates a multi-modal quality value (A) on the basis of an audio quality evaluation value (A) and a video quality evaluation value (). In addition, a delay quality degradation amount estimation unit () estimates a delay quality degradation amount (B) on the basis of an audio delay time (A) and a video delay time (B). A video communication quality estimation unit () estimates a video communication quality value () on the basis of a multi-modal quality value (A) and a delay quality degradation amount (B).
Published as:
CA2617893A1; WO2007029731A1; KR20080028483A; EP1924101A1; CN101248679A; JPWO2007029731A1; US2009096874A1; KR100947275B1; JP4486130B2; CN101248679B; CA2617893C; EP1924101A4; US8405773B2; EP1924101B1;