by generating or selecting currents of predetermined frequencies or combinations of frequencies

Industry

CPC
H04M1/50

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Parent Industries

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M1/00Substation equipment

Current Industry

H04M1/50by generating or selecting currents of predetermined frequencies or combinations of frequencies

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Systems and methods for content delivery and management
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- Issue date Sep 21, 2021
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Information Patent Grant
Access control and validation using sonic tones
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- Chelsea Altman
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Mobile terminal for automatically making a telephone conversation u...
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- Taehoon Cho
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Mobile terminal
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- Issue date Sep 3, 2019
- LG Electronics Inc.
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All-digital phase locked loop (ADPLL) including a digital-to-time c...
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Time-to-digital converter
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- Issue date Jul 28, 2015
- QUALCOMM Incorporated
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Information Patent Grant
Telephony service interaction management
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- Issue date Mar 24, 2015
- Microsoft Technology Licensing, LLC
- Yun-Cheng Ju
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System effective to demodulate a modulated code and provide content...
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- Issue date Oct 14, 2014
- Sonic Notify, LLC
- Alex Bell
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Information Patent Grant
Method and apparatus for telephonically accessing and navigating th...
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- Issue date Sep 30, 2014
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Information Patent Grant
Method and device for encoding characters and routing calls using e...
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DTMF signalling between mobile and server
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- Issue date Dec 10, 2013
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- Zhigang Ruan
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Information Patent Grant
Method and apparatus for telephonically accessing and navigating th...
- Patent number 8,600,016
- Issue date Dec 3, 2013
- Intellectual Ventures I LLC
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Information Patent Grant
System effective to modulate a code and provide content to a user
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- Issue date Sep 10, 2013
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Information Patent Grant
System effective to demodulate a modulated code and provide content...
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- Issue date Mar 19, 2013
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Information Patent Grant
DTMF signalling between mobile and server
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- Research in Motion Limited
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- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method, system, and apparatus for attenuating dual-tone multiple fr...
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- Issue date Dec 18, 2012
- CenturyLink Intellectual Property LLC
- Amar Nath Ray
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
DTMF tone signal transmission method and DTMF tone signal transmiss...
- Patent number 8,311,033
- Issue date Nov 13, 2012
- NEC Infrontia Corporation
- Nobuhiro Monai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Secure call DTMF signaling
- Patent number 8,249,242
- Issue date Aug 21, 2012
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- Soren K. Lundsgaard
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Portable dialer device and method
- Patent number 8,229,360
- Issue date Jul 24, 2012
- Ari Maor
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for telephonically accessing and navigating th...
- Patent number 8,139,728
- Issue date Mar 20, 2012
- Ben Franklin Patent Holding L.L.C.
- Kyung H. Rhie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for telephonically accessing and navigating th...
- Patent number 8,054,166
- Issue date Nov 8, 2011
- Ben Franklin Patent Holding L.L.C.
- Kyung H. Rhie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for telephonically accessing and navigating th...
- Patent number 7,907,703
- Issue date Mar 15, 2011
- Intellectual Ventures Patent Holding I, LLC
- Kyung H. Rhie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for managing multiple codes for a telephone number
- Patent number 7,903,804
- Issue date Mar 8, 2011
- Sony Ericsson Mobile Communications AB
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- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mobile communication terminal having qwerty keys and method for out...
- Patent number 7,848,773
- Issue date Dec 7, 2010
- Samsung Electronics Co., Ltd.
- Sang Hoon Jin
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Information Patent Grant
Systems and methods for generating telephony dial tones
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- Issue date Sep 21, 2010
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Information Patent Grant
Enhanced user functionality from a telephone device to an IP network
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- Issue date Dec 1, 2009
- John Beck Mow
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
DTMF Generating assistant
- Patent number 7,409,055
- Issue date Aug 5, 2008
- AT&T Delaware Intellectual Property, Inc.
- John P. Ruckart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for telephonically accessing and navigating th...
- Patent number 7,231,020
- Issue date Jun 12, 2007
- Ben Franklin Patent Holding, LLC
- Kyung H. Rhie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
DTMF generating assistant
- Patent number 7,197,134
- Issue date Mar 27, 2007
- BellSouth Intellectual Property, Corp
- John P. Ruckart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic dialing device, a system, and a method for automatically...
- Patent number 7,170,995
- Issue date Jan 30, 2007
- David Johnson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
TELEPHONE SIGNAL PROCESSING
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- Yufei Tao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
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TELEPHONE SIGNAL PROCESSING
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- H04 - ELECTRIC COMMUNICATION TECHNIQUE
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AUDIO RECORDING SYSTEM AND APPARATUS
- Publication number 20150120027
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Method and device for secure phone banking
- Publication number 20140016780
- Publication date Jan 16, 2014
- QUALCOMM Incorporated
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- H04 - ELECTRIC COMMUNICATION TECHNIQUE
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SYSTEM EFFECTIVE TO DEMODULATE A MODULATED CODE AND PROVIDE CONTENT...
- Publication number 20130288723
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METHOD AND DEVICE FOR ENCODING CHARACTERS AND ROUTING CALLS USING E...
- Publication number 20130129077
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Information Patent Application
SYSTEM EFFECTIVE TO MODULATE A CODE AND PROVIDE CONTENT TO A USER
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Information Patent Application
SYSTEM EFFECTIVE TO DEMODULATE A MODULATED CODE AND PROVIDE CONTENT...
- Publication number 20130079057
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- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DEVICE EFFECTIVE TO MODULATE A CODE AND TO PROVIDE CONTENT TO A USER
- Publication number 20130079058
- Publication date Mar 28, 2013
- Alex Bell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DTMF SIGNALLING BETWEEN MOBILE AND SERVER
- Publication number 20130079043
- Publication date Mar 28, 2013
- Research in Motion Limited
- ZHIGANG RUAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method And System For Inputting DTMF Tones From A Smart Phone Keyboard
- Publication number 20120071202
- Publication date Mar 22, 2012
- Research in Motion Limited
- Yongqian Zheng
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SECURE CALL DTMF SIGNALING
- Publication number 20120063586
- Publication date Mar 15, 2012
- SYMBOL TECHNOLOGIES, INC.
- Soren K. Lundsgaard
- 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
TELEPHONY SERVICE INTERACTION MANAGEMENT
- Publication number 20110238414
- Publication date Sep 29, 2011
- Microsoft Corporation
- Yun-Cheng Ju
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DTMF SIGNALLING BETWEEN MOBILE AND SERVER
- Publication number 20110183649
- Publication date Jul 28, 2011
- Research In Motion Limited
- ZHIGANG RUAN
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Portable Dialer Device and Method
- Publication number 20090186574
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- Ari Maor
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Information Patent Application
Method, system, and apparatus for attenuating dual-tone multiple fr...
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Information Patent Application
DTMF SIGNALING IN WIRELESS COMMUNICATIONS NETWORKS
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Information Patent Application
System and method for overcoming dual tone multi frequency (DTMF) s...
- Publication number 20080304651
- Publication date Dec 11, 2008
- Embarq Holdings Company, LLC
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- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and method for amplifying attenuated DTMF signals in a packe...
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- Embarq Holdings Company LLC
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Information Patent Application
MOBILE COMMUNICATION TERMINAL HAVING QWERTY KEYS AND METHOD FOR OUT...
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- Samsung Electronics Co., Ltd.
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- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND DEVICE FOR SECURE PHONE BANKING
- Publication number 20080144787
- Publication date Jun 19, 2008
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- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM AND METHOD FOR MANAGING MULTIPLE CODES FOR A TELEPHONE NUMBER
- Publication number 20080069329
- Publication date Mar 20, 2008
- Andreas Jonasson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR PROVIDING AND USING A TELEPHONE CALLING CARD
- Publication number 20080043952
- Publication date Feb 21, 2008
- Jeffrey Citron
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for telephonically accessing and navigating th...
- Publication number 20080031429
- Publication date Feb 7, 2008
- Kyung H. Rhie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DTMF GENERATING ASSISTANT
- Publication number 20070286400
- Publication date Dec 13, 2007
- John P. Ruckart
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Device and method for simulating a telephonic condition
- Publication number 20070263779
- Publication date Nov 15, 2007
- James Bradley
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Dial pulse detection method and detector
- Publication number 20070263797
- Publication date Nov 15, 2007
- AudioCodes Ltd.
- Mark Raifel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for telephonically accessing and navigating th...
- Publication number 20070241941
- Publication date Oct 18, 2007
- Kyung H. Rhie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for telephonically accessing and navigating th...
- Publication number 20070242808
- Publication date Oct 18, 2007
- Kyung H. Rhie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

by generating or selecting currents of predetermined frequencies or combinations of frequencies

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Systems and methods for content delivery and management

Access control and validation using sonic tones

Mobile terminal for automatically making a telephone conversation u...

Mobile terminal

All-digital phase locked loop (ADPLL) including a digital-to-time c...

Time-to-digital converter

Telephony service interaction management

System effective to demodulate a modulated code and provide content...

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

Method and device for encoding characters and routing calls using e...

DTMF signalling between mobile and server

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

System effective to modulate a code and provide content to a user

System effective to demodulate a modulated code and provide content...

DTMF signalling between mobile and server

Method, system, and apparatus for attenuating dual-tone multiple fr...

DTMF tone signal transmission method and DTMF tone signal transmiss...

Secure call DTMF signaling

Portable dialer device and method

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

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

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

System and method for managing multiple codes for a telephone number

Mobile communication terminal having qwerty keys and method for out...

Systems and methods for generating telephony dial tones

Enhanced user functionality from a telephone device to an IP network

DTMF Generating assistant

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

DTMF generating assistant

Automatic dialing device, a system, and a method for automatically...

Patents Applicationslast 30 patents

TELEPHONE SIGNAL PROCESSING

TELEPHONE SIGNAL PROCESSING

AUDIO RECORDING SYSTEM AND APPARATUS

Method and device for secure phone banking

SYSTEM EFFECTIVE TO DEMODULATE A MODULATED CODE AND PROVIDE CONTENT...

METHOD AND DEVICE FOR ENCODING CHARACTERS AND ROUTING CALLS USING E...

SYSTEM EFFECTIVE TO MODULATE A CODE AND PROVIDE CONTENT TO A USER

SYSTEM EFFECTIVE TO DEMODULATE A MODULATED CODE AND PROVIDE CONTENT...

DEVICE EFFECTIVE TO MODULATE A CODE AND TO PROVIDE CONTENT TO A USER

DTMF SIGNALLING BETWEEN MOBILE AND SERVER

Method And System For Inputting DTMF Tones From A Smart Phone Keyboard

SECURE CALL DTMF SIGNALING

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

TELEPHONY SERVICE INTERACTION MANAGEMENT

DTMF SIGNALLING BETWEEN MOBILE AND SERVER

Portable Dialer Device and Method

Method, system, and apparatus for attenuating dual-tone multiple fr...

DTMF SIGNALING IN WIRELESS COMMUNICATIONS NETWORKS

System and method for overcoming dual tone multi frequency (DTMF) s...

System and method for amplifying attenuated DTMF signals in a packe...

MOBILE COMMUNICATION TERMINAL HAVING QWERTY KEYS AND METHOD FOR OUT...

METHOD AND DEVICE FOR SECURE PHONE BANKING

SYSTEM AND METHOD FOR MANAGING MULTIPLE CODES FOR A TELEPHONE NUMBER

METHOD AND APPARATUS FOR PROVIDING AND USING A TELEPHONE CALLING CARD

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

DTMF GENERATING ASSISTANT

Device and method for simulating a telephonic condition

Dial pulse detection method and detector

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

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