in which m-out-of-n signalling frequencies are transmitted

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H04Q1/453

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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

Current Industry

H04Q1/453in which m-out-of-n signalling frequencies are transmitted

Industries

Patents Grantslast 30 patents

Information Patent Grant
Robust DTMF detection in an unreliable voice-over-IP (VoIP) environ...
- Patent number 9,762,741
- Issue date Sep 12, 2017
- Genesys Telecommunications Laboratories, Inc.
- Christopher M. Rienzo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Robust DTMF detection in an unreliable voice-over-IP (VoIP) environ...
- Patent number 9,401,998
- Issue date Jul 26, 2016
- Genesys Telecommunications Laboratories, Inc.
- Christopher M. Rienzo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Recovery of DTMF tones in the presence of periodic interference and...
- Patent number 9,055,145
- Issue date Jun 9, 2015
- The United States of America, as represented by the Secretary of the Army
- Wei Su
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
High-performance tone detection using a digital signal processor (D...
- Patent number 8,761,916
- Issue date Jun 24, 2014
- LSI Corporation
- Aleksey Alexandrovich Letunovskiy
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Method and apparatus for decoding DTMF tones
- Patent number 7,602,902
- Issue date Oct 13, 2009
- Honeywell International Inc.
- Hong-Jyh Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
DTMF signal transmission method and communication apparatus
- Patent number 7,532,606
- Issue date May 12, 2009
- Hitachi Telecom Technologies, Ltd
- Shinya Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
DTMF signal transmission method and communication apparatus
- Patent number 7,062,033
- Issue date Jun 13, 2006
- Hitachi Telecom Technologies, Ltd.
- Shinya Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
DTMF signal transmission method and communication apparatus
- Patent number 7,050,570
- Issue date May 23, 2006
- Hitachi Telecom Technologies, Ltd.
- Shinya Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and device for distinguishing among a plurality of devices a...
- Patent number 6,728,369
- Issue date Apr 27, 2004
- Siemens Information and Communication Networks, Inc.
- Scott Burgess
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System for transmitting DTMF signal and communication equipment the...
- Patent number 6,700,973
- Issue date Mar 2, 2004
- Hitachi Telecom Technologies, Ltd.
- Shinya Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of controlling telecommunications signalling
- Patent number 6,493,441
- Issue date Dec 10, 2002
- Siemens Information and Communication Networks, Inc.
- Scott Burgess
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and device for decoding a sequence of signals
- Patent number 6,078,660
- Issue date Jun 20, 2000
- Siemens Information and Communication Systems, Inc.
- Scott Burgess
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transmission of voice-frequency signals in a mobile telephone system
- Patent number 6,035,179
- Issue date Mar 7, 2000
- Nokia Telecommunications Oy
- Anu Virtanen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for generation of tone signals over a transmissio...
- Patent number 6,014,441
- Issue date Jan 11, 2000
- Smart Tone Authentication, Inc.
- Andrew R. Mark
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Transmission system with improved tone detection
- Patent number 5,982,874
- Issue date Nov 9, 1999
- U.S. Philips Corporation
- Harm Braams
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Inband signal converter, and associated method, for a digital commu...
- Patent number 5,978,676
- Issue date Nov 2, 1999
- Telefonaktiebolaget L/M Ericsson (publ)
- Alberto Irizar Guridi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone generator
- Patent number 5,978,388
- Issue date Nov 2, 1999
- SamSung Electronics Co., Ltd.
- Jae-Min Park
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for the transfer of information between two popul...
- Patent number 5,963,643
- Issue date Oct 5, 1999
- Fintel S.A.
- Lucas Goreta
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and system for compensating for signal deviations in tone si...
- Patent number 5,949,874
- Issue date Sep 7, 1999
- Smart Tone Authentication, Inc.
- Andrew R. Mark
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and system for the secure communication of data
- Patent number 5,907,597
- Issue date May 25, 1999
- Smart Tone Authentication, Inc.
- Andrew R. Mark
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Interference attenuation for acoustic-dialers
- Patent number 5,878,131
- Issue date Mar 2, 1999
- AT&T Corp.
- Robert Albert Boie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for the high-speed generation and transmission of...
- Patent number 5,859,913
- Issue date Jan 12, 1999
- Fintel S.A.
- Lucas Goreta
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Dual-tone multi-frequency signal transfer protocol
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- Issue date Nov 10, 1998
- AT&T Corp.
- Chi K. Lam
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Information storage device for storing personal identification info...
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- Issue date Oct 20, 1998
- Smart Tone Authentication, Inc.
- Andrew R. Mark
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Information Patent Grant
Auto-dialer housing
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- Issue date Oct 6, 1998
- Smart Tone Authentication, Inc.
- Andrew R. Mark
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
DTMF detector system and method which performs frequency domain ene...
- Patent number 5,809,133
- Issue date Sep 15, 1998
- Advanced Micro Devices, Inc.
- John G. Bartkowiak
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Information signal detection device and information signal detectio...
- Patent number 5,793,862
- Issue date Aug 11, 1998
- Fujitsu Limited
- Teruyuki Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and apparatus for generating within the premises a dial tone...
- Patent number 5,781,625
- Issue date Jul 14, 1998
- Lucent Technologies, Inc.
- Theodore Sizer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication device capable of controlling transmission parameters...
- Patent number 5,781,626
- Issue date Jul 14, 1998
- Fuji Xerox Co., Ltd.
- Toshiaki Koue
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method using personal identification numbers and associa...
- Patent number 5,745,555
- Issue date Apr 28, 1998
- Smart Tone Authentication, Inc.
- Andrew R. Mark
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Robust DTMF detection in an unreliable voice-over-IP (VoIP) environ...
- Publication number 20140169550
- Publication date Jun 19, 2014
- SOUNDBITE COMMUNICATIONS, INC.
- Christopher M. Rienzo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
HIGH-PERFORMANCE TONE DETECTION USING A DIGITAL SIGNAL PROCESSOR (D...
- Publication number 20110200147
- Publication date Aug 18, 2011
- LSI Corporation
- Aleksey Alexandrovich Letunovskiy
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS HAVING ECHO CANCELLATION AND TONE DETECTION FO...
- Publication number 20110013766
- Publication date Jan 20, 2011
- Roman A. Dyba
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR DECODING DTMF TONES
- Publication number 20070116242
- Publication date May 24, 2007
- Honeywell International, Inc.
- Hong-Jyh Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DTMF signal transmission method and communication apparatus
- Publication number 20040161098
- Publication date Aug 19, 2004
- HITACHI TELECOM TECHNOLOGIES, LTD.
- Shinya Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DTMF signal transmission method and communication apparatus
- Publication number 20040160965
- Publication date Aug 19, 2004
- HITACHI TELECOM TECHNOLOGIES, LTD.
- Shinya Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DTMF signal transmission method and communication apparatus
- Publication number 20040160966
- Publication date Aug 19, 2004
- HITACHI TELECOM TECHNOLOGIES, LTD.
- Shinya Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND DEVICE FOR DECODING A SEQUENCE OF SIGNALS
- Publication number 20030123643
- Publication date Jul 3, 2003
- SCOTT BURGESS
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

in which m-out-of-n signalling frequencies are transmitted

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Robust DTMF detection in an unreliable voice-over-IP (VoIP) environ...

Robust DTMF detection in an unreliable voice-over-IP (VoIP) environ...

Recovery of DTMF tones in the presence of periodic interference and...

High-performance tone detection using a digital signal processor (D...

Method and apparatus for decoding DTMF tones

DTMF signal transmission method and communication apparatus

DTMF signal transmission method and communication apparatus

DTMF signal transmission method and communication apparatus

Method and device for distinguishing among a plurality of devices a...

System for transmitting DTMF signal and communication equipment the...

Method of controlling telecommunications signalling

Method and device for decoding a sequence of signals

Transmission of voice-frequency signals in a mobile telephone system

Method and system for generation of tone signals over a transmissio...

Transmission system with improved tone detection

Inband signal converter, and associated method, for a digital commu...

Tone generator

Method and system for the transfer of information between two popul...

Method and system for compensating for signal deviations in tone si...

Method and system for the secure communication of data

Interference attenuation for acoustic-dialers

Method and system for the high-speed generation and transmission of...

Dual-tone multi-frequency signal transfer protocol

Information storage device for storing personal identification info...

Auto-dialer housing

DTMF detector system and method which performs frequency domain ene...

Information signal detection device and information signal detectio...

System and apparatus for generating within the premises a dial tone...

Communication device capable of controlling transmission parameters...

System and method using personal identification numbers and associa...

Patents Applicationslast 30 patents

Robust DTMF detection in an unreliable voice-over-IP (VoIP) environ...

HIGH-PERFORMANCE TONE DETECTION USING A DIGITAL SIGNAL PROCESSOR (D...

METHOD AND APPARATUS HAVING ECHO CANCELLATION AND TONE DETECTION FO...

METHOD AND APPARATUS FOR DECODING DTMF TONES

DTMF signal transmission method and communication apparatus

DTMF signal transmission method and communication apparatus

DTMF signal transmission method and communication apparatus

METHOD AND DEVICE FOR DECODING A SEQUENCE OF SIGNALS