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:
Jul. 12, 2011
Filed:
May. 10, 2001
Applicants:
Philip Gray, Ipswich, GB;
Michael P Hollier, Ipswich, GB;
Richard Jb Reynolds, Ipswich, GB;
Antony W Rix, Cambridge, GB;
Inventors:
Philip Gray, Ipswich, GB;
Michael P Hollier, Ipswich, GB;
Richard JB Reynolds, Ipswich, GB;
Antony W Rix, Cambridge, GB;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 3/14 (2006.01); H04M 3/26 (2006.01); H04B 17/00 (2006.01); G10L 15/20 (2006.01); G01R 31/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The degree of degradation imposed on signals transmitted over a communications link from a transmitter to a receiver is tested. A predetermined test signal is transmitted using spare capacity detected by a voice activity detector when no speech is to be transmitted over the communications link. The test signal received by the receiver is compared with the reference signal, and a measure of the degradation of signals caused by the communications link is generated therefrom.