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

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

Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
AMERICAN TELEPHONE AND TELEGRAPH COMPANYMURRAY HILL, NJ3138
AT&T BELL LABORATORIESMURRAY HILL, NJ3372
LUCENT TECHNOLOGIES INC.MURRAY HILL, NJ9561

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ramsden, David B Wall, NJ 4 15

Cited Art

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 20 1983
 
NORTEL NETWORKS LIMITED (1)
4,363,938 Method of and apparatus for echo detection in voice channel signals 10 1980

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
SECURUS TECHNOLOGIES, INC. (5)
7,899,167 Centralized call processing 4 2003
8,000,269 Call processing with voice over internet protocol transmission 0 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 12 2007
8,340,260 Inmate management and call processing systems and methods 0 2009
 
ULTRATEC, INC. (3)
7,164,753 Real-time transcription correction system 10 2003
7,660,398 Captioned telephone service 1 2005
7,881,441 Device independent text captioned telephone service 1 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 27 1996
7,505,406 Public telephone control with voice over internet protocol transmission 9 2001
 
LUCENT TECHNOLOGIES INC. (1)
6,128,370 Multiple tone detection using out-of-band background detector 11 1997
 
NORTEL NETWORKS LIMITED (1)
5,940,471 Method and apparatus for obtaining feedback regarding network services 75 1996