using multi-frequency signalling

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H04Q1/45

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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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H04Q1/45using multi-frequency signalling

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Call classification through analysis of DTMF events
- Patent number 12,015,731
- Issue date Jun 18, 2024
- PINDROP SECURITY, INC.
- Nick Gaubitch
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Call classification through analysis of DTMF events
- Patent number 11,388,490
- Issue date Jul 12, 2022
- PINDROP SECURITY, INC.
- Nick Gaubitch
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Wireless transmitter/receiver architecture for low-power wide area...
- Patent number 11,115,731
- Issue date Sep 7, 2021
- Amazon Technologies, Inc.
- Benjamin Wild
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Call classification through analysis of DTMF events
- Patent number 10,904,643
- Issue date Jan 26, 2021
- PINDROP SECURITY, INC.
- Nick Gaubitch
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Smart power adapter
- Patent number 10,826,714
- Issue date Nov 3, 2020
- Christopher T Kelly
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Elevator system
- Patent number 10,807,831
- Issue date Oct 20, 2020
- Mitsubishi Electric Corporation
- Tomohiro Hattori
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Computer assisted patient navigation and information systems and me...
- Patent number 10,354,051
- Issue date Jul 16, 2019
- Forge Laboratories, LLC
- Randall S. Hickle
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Method and apparatus for intelligent dual-tone multi-frequency (DTM...
- Patent number 10,264,333
- Issue date Apr 16, 2019
- Steven Eric Presser
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Call classification through analysis of DTMF events
- Patent number 10,257,591
- Issue date Apr 9, 2019
- PINDROP SECURITY, INC.
- Nick Gaubitch
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Telephone switching apparatus and method, and program
- Patent number 10,165,098
- Issue date Dec 25, 2018
- NEC PLATFORMS, LTD.
- Toru Morimoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Detection and identification of synchronizing signals embedded in v...
- Patent number 10,148,389
- Issue date Dec 4, 2018
- The United States of America, as represented by the Secretary of the Army
- Wei Su
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
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
Method and apparatus for detecting a set up signal used for data co...
- Patent number 9,674,070
- Issue date Jun 6, 2017
- NXP USA, INC.
- Adrian Susan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Voice-operated interface for DTMF-controlled systems
- Patent number 9,485,347
- Issue date Nov 1, 2016
- AT&T Intellectual Property II, L.P.
- Narendra K. Gupta
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Low complexity tone/voice discrimination method using a rising edge...
- Patent number 9,479,846
- Issue date Oct 25, 2016
- Intel Corporation
- Dariusz Dzik
- 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
Voice-operated interface for DTMF-controlled systems
- Patent number 9,215,305
- Issue date Dec 15, 2015
- AT&T Intellectual Property II, L.P.
- Narendra K. Gupta
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for transmitting signaling
- Patent number 9,204,206
- Issue date Dec 1, 2015
- Huawei Device Co., Ltd.
- Zhanghua Ge
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for detecting one or more predetermined tones...
- Patent number 9,185,471
- Issue date Nov 10, 2015
- FREESCALE SEMICONDUCTOR, INC.
- Bogdan Bolocan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multiple-frequency signal classification through use of a second-or...
- Patent number 9,179,202
- Issue date Nov 3, 2015
- The United States of America, as represented by the Secretary of the Army
- Wei Su
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Low complexity tone/voice discrimination method using a rising edge...
- Patent number 9,148,520
- Issue date Sep 29, 2015
- Intel Corporation
- Dariusz Dzik
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for handling a telecommunications connection, telecommunicat...
- Patent number 9,100,729
- Issue date Aug 4, 2015
- Unify GmbH & Co. KG
- Berthold Ermann
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
DTMF circuit and method of relaying DTMF digits in a DTMF circuit
- Patent number 9,094,497
- Issue date Jul 28, 2015
- Sprint Communications Company L.P.
- Robert E. Geis
- 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
Method and apparatus for detecting a set up signal used for data co...
- Patent number 8,934,582
- Issue date Jan 13, 2015
- FREESCALE SEMICONDUCTOR, INC.
- Adrian Susan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Voice-operated interface for DTMF-controlled systems
- Patent number 8,917,827
- Issue date Dec 23, 2014
- AT&T Intellectual Property II, L.P.
- Narendra K. Gupta
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for providing controllable enhanced call service...
- Patent number 8,891,514
- Issue date Nov 18, 2014
- AT&T Intellectual Property II, L.P.
- Yihsiu Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for telephonically accessing and navigating th...
- Patent number 8,848,881
- Issue date Sep 30, 2014
- Intellectual Ventures I LLC
- Kyung H. Rhie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for detecting one or more predetermined tones...
- Patent number 8,804,700
- Issue date Aug 12, 2014
- FREESCALE SEMICONDUCTOR, INC.
- Bogdan Bolocan
- 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

Patents Applicationslast 30 patents

Information Patent Application
SYSTEM, METHOD, AND APPARATUS FOR DETECTING CALL INTERCEPTION
- Publication number 20240422545
- Publication date Dec 19, 2024
- University of Florida Research Foundation, Incorporated
- Patrick G. TRAYNOR
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CALL CLASSIFICATION THROUGH ANALYSIS OF DTMF EVENTS
- Publication number 20240323270
- Publication date Sep 26, 2024
- PINDROP SECURITY, INC.
- Nick GAUBITCH
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
CALL CLASSIFICATION THROUGH ANALYSIS OF DTMF EVENTS
- Publication number 20220337924
- Publication date Oct 20, 2022
- PINDROP SECURITY, INC.
- Nick GAUBITCH
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
CALL CLASSIFICATION THROUGH ANALYSIS OF DTMF EVENTS
- Publication number 20210152897
- Publication date May 20, 2021
- PINDROP SECURITY, INC.
- Nick GAUBITCH
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Smart Power Adapter
- Publication number 20200313913
- Publication date Oct 1, 2020
- Christopher T. Kelly
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
ELEVATOR SYSTEM
- Publication number 20200299100
- Publication date Sep 24, 2020
- MITSUBISHI ELECTRIC CORPORATION
- Tomohiro HATTORI
- B66 - HOISTING LIFTING HAULING
Information Patent Application
REMOTE DEVICE INTERFACE AND TELEPHONE ENTRY SYSTEM
- Publication number 20200111274
- Publication date Apr 9, 2020
- Doorport Inc.
- Benjamin Taylor
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CALL CLASSIFICATION THROUGH ANALYSIS OF DTMF EVENTS
- Publication number 20190238956
- Publication date Aug 1, 2019
- PINDROP SECURITY, INC.
- Nick GAUBITCH
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
TELEPHONE SWITCHING APPARATUS AND METHOD, AND PROGRAM
- Publication number 20180131795
- Publication date May 10, 2018
- NEC PLATFORMS, LTD.
- Toru MORIMOTO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMPUTER ASSISTED PATIENT NAVIGATION AND INFORMATION SYSTEMS AND ME...
- Publication number 20180052968
- Publication date Feb 22, 2018
- GRACE CLINIC HOLDINGS, LLC
- Randall S. HICKLE
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Method of Inter-Frequency or Inter-Radio Access Technology Measurement
- Publication number 20170359632
- Publication date Dec 14, 2017
- MEDIATEK SINGAPORE PTE LTD
- Wenze Qu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD FOR HANDLING A TELECOMMUNICATIONS CONNECTION, TELECOMMUNICAT...
- Publication number 20140369489
- Publication date Dec 18, 2014
- UNIFY GMBH & CO. KG
- Berthold Ermann
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR DETECTING ONE OR MORE PREDETERMINED TONES...
- Publication number 20140341214
- Publication date Nov 20, 2014
- FREESCALE SEMICONDUCTOR, INC.
- Bogdan Bolocan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
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
VOICE-OPERATED INTERFACE FOR DTMF-CONTROLLED SYSTEMS
- Publication number 20140011544
- Publication date Jan 9, 2014
- AT&T Intellectual Property II, L.P.
- Narendra K. Gupta
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
METHOD AND APPARATUS FOR TRANMITTING SIGNALING
- Publication number 20140004844
- Publication date Jan 2, 2014
- HUAWEI DEVICE CO., LTD.
- Zhanghua Ge
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHODS AND APPARATUS FOR EFFICIENT TONE DETECTION
- Publication number 20130268571
- Publication date Oct 10, 2013
- LSI Corporation
- Gil Naveh
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
SYSTEM AND METHOD FOR REDUCING CALL LATENCY IN MONITORED CALLS
- Publication number 20130107747
- Publication date May 2, 2013
- Research in Motion Limited
- Yuriy LOBZAKOV
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
AUDIO CONFERENCE PLATFORM WITH DYNAMIC SPEECH DETECTION THRESHOLD
- Publication number 20130028404
- Publication date Jan 31, 2013
- William O'Malley
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Voice and Data Exchange Over a Packet Based Network
- Publication number 20120236845
- Publication date Sep 20, 2012
- BROADCOM CORPORATION
- Henry Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TONE SIGNAL CIRCUIT AND WIRELESS RECEIVER
- Publication number 20120093264
- Publication date Apr 19, 2012
- Icom Incorporated
- Kouichiro YAMAGUCHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and Apparatus for Telephonically Accessing and Navigating th...
- Publication number 20120047216
- Publication date Feb 23, 2012
- Ben Franklin Patent Holding LLC
- Kyung H. Rhie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ADAPTIVE GAIN CONTROL BASED ON ECHO CANCELLER PERFORMANCE INFORMATION
- Publication number 20110249771
- Publication date Oct 13, 2011
- Wilfrid LeBlanc
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
VOICE AND DATA EXCHANGE OVER A PACKET BASED NETWORK
- Publication number 20110243127
- Publication date Oct 6, 2011
- BROADCOM CORPORATION
- Henry Li
- 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
INTERACTION BETWEEN ECHO CANCELLER AND PACKET VOICE PROCESSING
- Publication number 20110182168
- Publication date Jul 28, 2011
- Wilfrid LeBlanc
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
One Way and Round Trip Delays Using Telephony In-Band Tones
- Publication number 20110170537
- Publication date Jul 14, 2011
- Marius Ungureanu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR DETECTING ONE OR MORE PREDETERMINED TONES...
- Publication number 20110116497
- Publication date May 19, 2011
- FREESCALE SEMICONDUCTOR, INC.
- Bogdan Bolocan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MULTI-FREQUENCY TONE DETECTOR
- Publication number 20110103573
- Publication date May 5, 2011
- Freescale Semiconductor Inc.
- Adrian Susan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
VOICE-ACTIVITY DETECTION BASED ON FAR-END AND NEAR-END STATISTICS
- Publication number 20110058496
- Publication date Mar 10, 2011
- Wilfrid LeBlanc
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

using multi-frequency signalling

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Call classification through analysis of DTMF events

Call classification through analysis of DTMF events

Wireless transmitter/receiver architecture for low-power wide area...

Call classification through analysis of DTMF events

Smart power adapter

Elevator system

Computer assisted patient navigation and information systems and me...

Method and apparatus for intelligent dual-tone multi-frequency (DTM...

Call classification through analysis of DTMF events

Telephone switching apparatus and method, and program

Detection and identification of synchronizing signals embedded in v...

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

Method and apparatus for detecting a set up signal used for data co...

Voice-operated interface for DTMF-controlled systems

Low complexity tone/voice discrimination method using a rising edge...

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

Voice-operated interface for DTMF-controlled systems

Method and apparatus for transmitting signaling

Method and apparatus for detecting one or more predetermined tones...

Multiple-frequency signal classification through use of a second-or...

Low complexity tone/voice discrimination method using a rising edge...

Method for handling a telecommunications connection, telecommunicat...

DTMF circuit and method of relaying DTMF digits in a DTMF circuit

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

Method and apparatus for detecting a set up signal used for data co...

Voice-operated interface for DTMF-controlled systems

Method and system for providing controllable enhanced call service...

Method and apparatus for telephonically accessing and navigating th...

Method and apparatus for detecting one or more predetermined tones...

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

Patents Applicationslast 30 patents

SYSTEM, METHOD, AND APPARATUS FOR DETECTING CALL INTERCEPTION

CALL CLASSIFICATION THROUGH ANALYSIS OF DTMF EVENTS

CALL CLASSIFICATION THROUGH ANALYSIS OF DTMF EVENTS

CALL CLASSIFICATION THROUGH ANALYSIS OF DTMF EVENTS

Smart Power Adapter

ELEVATOR SYSTEM

REMOTE DEVICE INTERFACE AND TELEPHONE ENTRY SYSTEM

CALL CLASSIFICATION THROUGH ANALYSIS OF DTMF EVENTS

TELEPHONE SWITCHING APPARATUS AND METHOD, AND PROGRAM

COMPUTER ASSISTED PATIENT NAVIGATION AND INFORMATION SYSTEMS AND ME...

Method of Inter-Frequency or Inter-Radio Access Technology Measurement

METHOD FOR HANDLING A TELECOMMUNICATIONS CONNECTION, TELECOMMUNICAT...

METHOD AND APPARATUS FOR DETECTING ONE OR MORE PREDETERMINED TONES...

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

VOICE-OPERATED INTERFACE FOR DTMF-CONTROLLED SYSTEMS

METHOD AND APPARATUS FOR TRANMITTING SIGNALING

METHODS AND APPARATUS FOR EFFICIENT TONE DETECTION

SYSTEM AND METHOD FOR REDUCING CALL LATENCY IN MONITORED CALLS

AUDIO CONFERENCE PLATFORM WITH DYNAMIC SPEECH DETECTION THRESHOLD

Voice and Data Exchange Over a Packet Based Network

TONE SIGNAL CIRCUIT AND WIRELESS RECEIVER

Method and Apparatus for Telephonically Accessing and Navigating th...

ADAPTIVE GAIN CONTROL BASED ON ECHO CANCELLER PERFORMANCE INFORMATION

VOICE AND DATA EXCHANGE OVER A PACKET BASED NETWORK

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

INTERACTION BETWEEN ECHO CANCELLER AND PACKET VOICE PROCESSING

One Way and Round Trip Delays Using Telephony In-Band Tones

METHOD AND APPARATUS FOR DETECTING ONE OR MORE PREDETERMINED TONES...

MULTI-FREQUENCY TONE DETECTOR

VOICE-ACTIVITY DETECTION BASED ON FAR-END AND NEAR-END STATISTICS