Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2005-11-15
2005-11-15
Phan, Man U. (Department: 2665)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S395210
Reexamination Certificate
active
06965597
ABSTRACT:
A system and method automates the process of objectively measuring the subjective quality of packetized telecommunication signals as a function of network quality-of-service (QoS) parameters, implementation choices, and other related parameters. Computer-based simulation may be used in conjunction with objective quality measurement algorithms and pre-recorded reference or test signals. A system (300) employing this simulation method does not require the use of human subjects in subjective quality evaluation. The system and method are applicable to various types of telecommunication signals such as, for example, voice, video, audio, and multimedia.
REFERENCES:
patent: 6289054 (2001-09-01), Rhee
patent: 6567471 (2003-05-01), Yoshinari
patent: 6577996 (2003-06-01), Jagadeesan
patent: 6609092 (2003-08-01), Ghitza et al.
A.D. Clark; “Modeling the Effects of Burst Packet Loss and Recency on Subjective Voice Quality”; IP-Telephony Workshop; Columbia University, New York; Apr. 2001; 5 pages.
J.B. Hopper et al.; “Objective Quality Analysis of a Voice Over Internet Protocol System”; IEE Electronics Letters; vol. 36; No. 22; Oct. 2000; pp. 1900-1901.
L.F. Sun et al., “Impact of Packet Loss Location on Perceived Speech Quality”; 2ndIP-Telephony Worksop; Columbia University, New York; Apr. 2001; 9 pages.
“Testing VoIP using PSQM”; Abacus Application Note 11; Zarak Systems Corporation; Sep. 1999; 8 pages.
A. Conway et al.; “Synchronized Two-Way Voice Simulation Tool for Internet Phone Performance Analysis and Evaluation”; Computer Performance Evaluation Modeling Techniques and Tools, Lecture Notes in Computer Science; vol. 1245; 1997; pp. 108-122.
P. Corriveau et al.; “Video Quality Experts Group: The Quest for Vaild Objective Methods”; In Proceedings SPIE; vol. 3959; Human Vision and Electronic Imaging V; Jun. 2000; pp. 129-139.
P. Denisowski; “How Does It Sound?”; IEEE Spectrum; vol. 38, No. 2; 2001; http://www.spectrum.ieee.org/spectrum/feb01/features/voic.html; 8 pages.
H. Fletcher et al.; “Articulation Testing Methods”; Bell System Technical Journal; vol. 8; 1929; pp. 806-854.
R. Guérin et al.; “Equivalent Capacity and Its Application to Bandwidth Allocation in High-Speed Networks”; IEEE Journal on Selected Areas in Communications; vol. 9, No. 7; 1991; pp. 968-981.
ITU-R Recommendation BS.1387; “Method for Objective Measurements of Perceived Audio Quality (PEAQ)”; 1998; 100 pages.
ITU-T Recommendation P.50; “Artificial Voices”; 1999; 22 pages.
ITU-T Recommendation P.50; Appendix 1; “Test Signals”; 1998; 60 pages.
ITU-T Recommendation P.800; “Methods for Subjective Determination of Transmission Quality”; 1996; 38 pages.
ITU-T Recommendation P.861; “Objective Quality Measurement of Telephone-Band (300-3400 Hz) Speech Codecs”; 1998; 42 pages.
ITU-T Recommendation P.862; “Perceptual Evaluation of Speech Quality (PESQ), an Objective Method for End-to-End Speech Quality Assessment of Narrowband Telephone Networks and Speech Codecs”; 2001; 26 pages.
M. Karam et al.; “Analysis of the Delay and Jitter of Voice Traffic Over the Intenet”; In Proceedings IEEE INFOCOM 2001; vol. 2; 2001; 10 pages.
M. Keyhl et al.; “A Combined Measurement Tool for the Objective Perceptual Based Evaluation of Compressed Speech and Audio Signals”; In Proceedings 106thAudio Engineering Society Convention; 4931 (M3); Munich, Germany; May 1999; pp. 1-22 (plus cover).
T. Kostas et al.; “Real-Time Voice Over Packet-Switched Networks”; IEEE Network; Jan./Feb. 1998; pp. 18-27.
O. Maeshima et al.; “A Method of Service Quality Estimation with a Network Measurement Tool”; In Proceedings IEEE International Performance, Computing and Communcations Conference; Feb. 1999; pp. 201-209.
National Institute of Standards and Technology (NIST) Net Emulator Homepage; www.antd.nist.gov/itg
istnet/index.html; 4 pages.
M. Perkins et al.; “Characterizing the Subjective Performance of the ITU-T 8 kb/s Speech Coding Algorithm—ITU-T G.729”; IEEE Communications Magazine; vol. 359; Sep. 1997; pp. 74-81.
C. Perkins et al.; “A Survey of Packet-Loss Recovery Techniques for Straming Audio”; IEEE Networks Magazine; vol. 12, No. 5; Sep. 1998; pp. 40-48.
A. Raynes et al.; “Integrated Management Architecture for IP-Based Networks”; IEEE Communications Magazine; vol. 38, No. 4; 2000; pp. 48-53.
A. Rohaly et al.; “Video Quality Experts Group: Current Results and Future Directions”; In Proceedings SPIE; vol. 4067; Visual Communications and Image Processing 2000; May 2000; 12 pages.
L. Thorpe et al.; “Performance of Current Perceptual Objective Speech Quality Measures”; In Proceedings IEEE Workshop on Speech Coding; 1999; pp. 144-146.
ITU Contribution COM 12-20-E, Improvement of the P.861 Perceptual Speech Quality Measure, KPN Research, Netherlands, Dec. 1997, 7 Pages.
Nguyen Toan
Phan Man U.
Suchtya, Esq. Leonard C.
Verizon Laboratories Inc.
Wall, Esq. Joel
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