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H04Q1/44

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HELECTRICITY H04Electric communication H04QSELECTING H04Q1/00Details of selecting apparatus or arrangements for establishing connections among stations for the purpose of transferring information via these connections

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H04Q1/44using alternate current

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Patents Grantslast 30 patents

Information Patent Grant
Enhanced tone detector including adaptive multi-bandpass filter for...
- Patent number 8,483,384
- Issue date Jul 9, 2013
- FREESCALE SEMICONDUCTOR, INC.
- Lucio F. C. Pessoa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Using RTCP statistics for media system control
- Patent number 8,018,853
- Issue date Sep 13, 2011
- Broadcom Corporation
- Wilfrid LeBlanc
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone, modulated tone, and saturated tone detection in a voice activ...
- Patent number 7,970,121
- Issue date Jun 28, 2011
- Texas Instruments Incorporated
- Dunling Li
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Using RTCP statistics for media system control
- Patent number 7,525,918
- Issue date Apr 28, 2009
- Broadcom Corporation
- Wilfrid LeBlanc
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone, modulated tone, and saturated tone detection in a voice activ...
- Patent number 7,277,537
- Issue date Oct 2, 2007
- Texas Instruments Incorporated
- Dunling Li
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Tone detector
- Patent number 7,227,943
- Issue date Jun 5, 2007
- Ricoh Company, Ltd.
- Masanori Itoh
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Local control of call features in a telephone system
- Patent number 7,177,410
- Issue date Feb 13, 2007
- Intel Corporation
- Edward O. Clapper
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for testing an asymmetric digital subscriber line
- Patent number 7,058,162
- Issue date Jun 6, 2006
- France Telecom
- Christian Gadin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Polite call waiting notification
- Patent number 7,046,784
- Issue date May 16, 2006
- Avaya Technology Corp.
- Doree Duncan Seligmann
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal detector
- Patent number 6,931,076
- Issue date Aug 16, 2005
- Intel Corporation
- Sigang Qiu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for testing large-scale audio conference servers
- Patent number 6,888,925
- Issue date May 3, 2005
- Snowshore Networks, Inc.
- Andy Spitzer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Local control of call features in a telephone system
- Patent number 6,882,716
- Issue date Apr 19, 2005
- Intel Corporation
- Edward O. Clapper
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone detector for use in a modem
- Patent number 6,711,205
- Issue date Mar 23, 2004
- Intel Corporation
- Jim Beaney
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone detection in communication networks
- Patent number 6,650,627
- Issue date Nov 18, 2003
- Avaya Technology Corp.
- Peter David Goldman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System for ensuring calling party privacy in a call screening system
- Patent number 6,493,432
- Issue date Dec 10, 2002
- Avaya Technology Corp.
- Diane Doran Blum
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Employing customer premises equipment in communications network mai...
- Patent number 6,453,153
- Issue date Sep 17, 2002
- AT&T Corp.
- Duane Oliver Bowker
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Circuit and method for detecting a tone signal
- Patent number 6,424,925
- Issue date Jul 23, 2002
- Integrated Telecom Express, Inc.
- Man Ho Ku
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Detection circuit of tone signal
- Patent number 6,415,139
- Issue date Jul 2, 2002
- Oki Electric Industry Co, Ltd.
- Atsushi Shimbo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Line testing in a telecommunications network
- Patent number 6,385,299
- Issue date May 7, 2002
- British Telecommunications public limited company
- Alvin Brooks
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for using a VM tone to prevent a voice announc...
- Patent number 6,366,652
- Issue date Apr 2, 2002
- Telefonaktiebolaget LM Ericsson (publ)
- Lars Gunnar Folke Ahlström
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for electronic mail notification
- Patent number 6,212,265
- Issue date Apr 3, 2001
- Darin Duphorne
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone detection using discrete fourier transform techniques
- Patent number 6,195,675
- Issue date Feb 27, 2001
- Nortel Networks Limited
- Rui Wang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Automatic detection of pots line
- Patent number 6,172,985
- Issue date Jan 9, 2001
- Gateway 2000, Inc.
- Timothy G. Gilbert
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Line testing in a telecommunications network
- Patent number 6,169,783
- Issue date Jan 2, 2001
- British Telecommunicaitons public limited company
- Alvin Brooks
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for using a MS tone to prevent a voice announc...
- Patent number 6,154,645
- Issue date Nov 28, 2000
- Telefonaktiebolaget L M Ericsson (publ)
- Lars Gunnar Folke Ahlstrom
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Employing customer premises equipment in communications network mai...
- Patent number 6,128,369
- Issue date Oct 3, 2000
- AT&T Corp.
- Duane Oliver Bowker
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone and periodical signal detection
- Patent number 6,122,652
- Issue date Sep 19, 2000
- Mitel Corporation
- Gary Q. Jin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and device for detecting the presence of a periodic signal o...
- Patent number 6,028,927
- Issue date Feb 22, 2000
- Canon Research Centre-France S.A.
- Fran.cedilla.ois Delumeau
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Sensing circuit
- Patent number 5,963,885
- Issue date Oct 5, 1999
- Alcatel N.V.
- Damien Luc Francois Macq
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for defeating a predictive telemarketing system
- Patent number 5,920,623
- Issue date Jul 6, 1999
- Vera-A-Fast
- Robert M. Bensman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Using RTCP Statistics For Media System Control
- Publication number 20090240826
- Publication date Sep 24, 2009
- Wilfrid LeBlanc
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tone, Modulated Tone, and Saturated Tone Detection in a Voice Activ...
- Publication number 20070291928
- Publication date Dec 20, 2007
- TEXAS INSTRUMENTS INCORPORATED
- Dunling Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Enhanced tone detector including adaptive multi-bandpass filter for...
- Publication number 20070263842
- Publication date Nov 15, 2007
- Freescale Semiconductor Inc.
- Lucio F.C. Pessoa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method for detecting single frequency tones
- Publication number 20060222106
- Publication date Oct 5, 2006
- James L. Seidman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Local control of call features in a telephone system
- Publication number 20050185782
- Publication date Aug 25, 2005
- Edward O. Clapper
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Signal detector
- Publication number 20050180529
- Publication date Aug 18, 2005
- Sigang Qiu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tone, modulated tone, and saturated tone detection in a voice activ...
- Publication number 20050047586
- Publication date Mar 3, 2005
- Dunling Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Using RTCP statistics for media system control
- Publication number 20040141528
- Publication date Jul 22, 2004
- Wilfrid LeBlanc
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Signal detector
- Publication number 20040125881
- Publication date Jul 1, 2004
- Sigang Qiu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Apparatus for testing an asymmetric digital subscriber line
- Publication number 20040076267
- Publication date Apr 22, 2004
- Christian Gadin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Polite call waiting notification
- Publication number 20040001584
- Publication date Jan 1, 2004
- Doree Duncan Seligmann
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Dual tone multi-frequency decoder combines software and hardware an...
- Publication number 20030235292
- Publication date Dec 25, 2003
- George Cheng
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tone detector
- Publication number 20030118162
- Publication date Jun 26, 2003
- Masanori Itoh
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Unified call classifier for processing speech and tones as a single...
- Publication number 20030083875
- Publication date May 1, 2003
- Micheal Kenneth Brown
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method for testing large-scale audio conference servers
- Publication number 20030083059
- Publication date May 1, 2003
- SNOWSHORE NETWORKS, INC.
- Andy Spitzer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Multi-detector call classifier
- Publication number 20030081756
- Publication date May 1, 2003
- Norman C. Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Multiplex transmission device
- Publication number 20030031132
- Publication date Feb 13, 2003
- Nobuyoshi Horie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Local control of call features in a telephone system
- Publication number 20020141556
- Publication date Oct 3, 2002
- Edward O. Clapper
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Employing customer premises equipment in communications network mai...
- Publication number 20020141364
- Publication date Oct 3, 2002
- Duane Oliver Bowker
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

using alternate current

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Enhanced tone detector including adaptive multi-bandpass filter for...

Using RTCP statistics for media system control

Tone, modulated tone, and saturated tone detection in a voice activ...

Using RTCP statistics for media system control

Tone, modulated tone, and saturated tone detection in a voice activ...

Tone detector

Local control of call features in a telephone system

Apparatus for testing an asymmetric digital subscriber line

Polite call waiting notification

Signal detector

Method for testing large-scale audio conference servers

Local control of call features in a telephone system

Tone detector for use in a modem

Tone detection in communication networks

System for ensuring calling party privacy in a call screening system

Employing customer premises equipment in communications network mai...

Circuit and method for detecting a tone signal

Detection circuit of tone signal

Line testing in a telecommunications network

Method and apparatus for using a VM tone to prevent a voice announc...

Method and apparatus for electronic mail notification

Tone detection using discrete fourier transform techniques

Automatic detection of pots line

Line testing in a telecommunications network

Method and apparatus for using a MS tone to prevent a voice announc...

Employing customer premises equipment in communications network mai...

Tone and periodical signal detection

Method and device for detecting the presence of a periodic signal o...

Sensing circuit

Method and apparatus for defeating a predictive telemarketing system

Patents Applicationslast 30 patents

Using RTCP Statistics For Media System Control

Tone, Modulated Tone, and Saturated Tone Detection in a Voice Activ...

Enhanced tone detector including adaptive multi-bandpass filter for...

Method for detecting single frequency tones

Local control of call features in a telephone system

Signal detector

Tone, modulated tone, and saturated tone detection in a voice activ...

Using RTCP statistics for media system control

Signal detector

Apparatus for testing an asymmetric digital subscriber line

Polite call waiting notification

Dual tone multi-frequency decoder combines software and hardware an...

Tone detector

Unified call classifier for processing speech and tones as a single...

Method for testing large-scale audio conference servers

Multi-detector call classifier

Multiplex transmission device

Local control of call features in a telephone system

Employing customer premises equipment in communications network mai...