US Patent No: 5,216,702

Number of patents in Portfolio can not be more than 2000

Nonintrusive speech level and dynamic noise measurements

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Importance

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Abstract

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A digital signal processor is provided with the facility to measure accurately, and nonintrusively, the levels of noise and/or speech signals appearing on an in-service network connection.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
AMERICAN TELEPHONE AND TELEGRAPH COMPANYMURRAY HILL, NJ3147
AT&T BELL LABORATORIESMURRAY HILL, NJ3373
LUCENT TECHNOLOGIES INC.MURRAY HILL, NJ8969

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ramsden, David B Wall, NJ 4 16

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Compagnie Industrielle des Telecommunications Cit-Alcatel (1)
4,552,996 Method and apparatus for evaluating noise level on a telephone channel 21 1983
 
NORTEL NETWORKS LIMITED (1)
4,363,938 Method of and apparatus for echo detection in voice channel signals 11 1980

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
SECURUS TECHNOLOGIES, INC. (6)
7,899,167 Centralized call processing 8 2003
8,000,269 Call processing with voice over internet protocol transmission 2 2004
7,916,845 Unauthorized call activity detection and prevention systems and methods for a Voice over Internet Protocol environment 0 2006
7,529,357 Inmate management and call processing systems and methods 24 2007
8,340,260 Inmate management and call processing systems and methods 2 2009
8,577,003 Centralized call processing 0 2011
 
ULTRATEC, INC. (3)
7,164,753 Real-time transcription correction system 13 2003
7,660,398 Captioned telephone service 2 2005
7,881,441 Device independent text captioned telephone service 2 2006
 
AT&T CORP. (2)
6,002,762 Method and apparatus for making nonintrusive noise and speech level measurements on voice calls 3 1996
5,793,864 Nonintrusive measurement of echo power and echo path delay present on a transmission path 4 1996
 
SCIENCE DYNAMICS CORPORATION (2)
5,768,355 Three-way call detection system 33 1996
7,505,406 Public telephone control with voice over internet protocol transmission 12 2001
 
LUCENT TECHNOLOGIES INC. (1)
6,128,370 Multiple tone detection using out-of-band background detector 12 1997
 
NORTEL NETWORKS LIMITED (1)
5,940,471 Method and apparatus for obtaining feedback regarding network services 90 1996