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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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H04Q1/4575which are transmitted in digital form

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Patents Grantslast 30 patents

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
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 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
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
Multi-frequency tone detector
- Patent number 8,457,301
- Issue date Jun 4, 2013
- FREESCALE SEMICONDUCTOR, INC.
- Adrian Susan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Methods and apparatus to decode dual-tone signals
- Patent number 8,391,469
- Issue date Mar 5, 2013
- Texas Instruments Incorporated
- Steven Edward Marum
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Erasure of DTMF signal transmitted as speech data
- Patent number 7,856,096
- Issue date Dec 21, 2010
- NEC Corporation
- Tatsuya Nakazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multi-frequency detector
- Patent number 7,805,119
- Issue date Sep 28, 2010
- DSP Group Ltd.
- Arie Gur
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Narrow band tone detection in echo canceling system
- Patent number 7,792,280
- Issue date Sep 7, 2010
- Mitel Networks Corporation
- Renee Johnston
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone detector and method therefor
- Patent number 7,529,363
- Issue date May 5, 2009
- FREESCALE SEMICONDUCTOR, INC.
- Lucio F. C. Pessoa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for fast DTMF detection
- Patent number 7,369,546
- Issue date May 6, 2008
- Nortel Networks Limited
- Joachim Fouret
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for DTMF detection using likelihood ratios
- Patent number 6,873,701
- Issue date Mar 29, 2005
- 3Com Corporation
- Wenshun Tian
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Frequency error detection methods and systems using the same
- Patent number 6,850,616
- Issue date Feb 1, 2005
- Cirrus Logic, Inc.
- Manoj Soman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for signal frequency decoding without an analo...
- Patent number 6,813,529
- Issue date Nov 2, 2004
- Microchip Technology Incorporated
- David Hedley
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Devices, software and methods for passing DTMF signals under voice...
- Patent number 6,801,622
- Issue date Oct 5, 2004
- Cisco Technology, Inc.
- Ramanathan T. Jagadeesan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for unified tone detection
- Patent number 6,748,059
- Issue date Jun 8, 2004
- Avaya Technology Corp.
- Sharmistha Sarkar Das
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Voice transmitter
- Patent number 6,683,944
- Issue date Jan 27, 2004
- Mitsubishi Denki Kabushiki Kaisha
- Wataru Fushimi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for receiving tone signal, apparatus for transmitting ton...
- Patent number 6,668,057
- Issue date Dec 23, 2003
- Kabushiki Kaisha Toshiba
- Eiji Otsuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for transmitting a DTMF signal with compressed vo...
- Patent number 6,650,662
- Issue date Nov 18, 2003
- International Business Machines Corporation
- Charles Arnaud
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Efficient digital ITU-compliant zero-buffering DTMF detection using...
- Patent number 6,608,896
- Issue date Aug 19, 2003
- University of Texas Board of Regents
- Matthew D. Felder
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
DTMF detection based on LPC coefficients
- Patent number 6,590,972
- Issue date Jul 8, 2003
- 3COM Corporation
- Youhong Lu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal detector with automatic gain control
- Patent number 6,580,792
- Issue date Jun 17, 2003
- Legerity, Inc.
- Jin Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for precise DTMF signal detection
- Patent number 6,560,331
- Issue date May 6, 2003
- 3COM Corporation
- Todor Cooklev
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Efficient digital ITU-compliant zero-buffering DTMF detection using...
- Patent number 6,370,244
- Issue date Apr 9, 2002
- Board of Regents of the University of Texas System
- Matthew D. Felder
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for detecting signal misalignment
- Patent number 6,046,977
- Issue date Apr 4, 2000
- Advanced MicroDevices, Inc.
- John G. Bartkowiak
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Device for detecting DTMF tones
- Patent number 6,044,149
- Issue date Mar 28, 2000
- Israel Shaham
- 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
Tone detector
- Patent number 6,021,192
- Issue date Feb 1, 2000
- AG Communication Systems Corporation
- Eric Alan Jones
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
DTMF detector for detecting DTMF signals using a digital signal pro...
- Patent number 5,937,059
- Issue date Aug 10, 1999
- SamSung Electronics Co., Ltd.
- Nam-Sun Kim
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

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
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 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
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
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
METHODS AND APPARATUS TO DECODE DUAL-TONE SIGNALS
- Publication number 20100008493
- Publication date Jan 14, 2010
- Steven Edward Marum
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD FOR DETECTING A CPE ALERT SIGNAL OF A TELECOMMUNICATION SYST...
- Publication number 20090227250
- Publication date Sep 10, 2009
- Ching-Hsun Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Multi-frequency detector
- Publication number 20080274708
- Publication date Nov 6, 2008
- Arie Gur
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD FOR DETECTING A CPE ALERT SIGNAL OF A TELECOMMUNICATION SYST...
- Publication number 20070071214
- Publication date Mar 29, 2007
- Ching-Hsun Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Erasure of DTMF signal transmitted as speech data
- Publication number 20060182233
- Publication date Aug 17, 2006
- NEC Corporation
- Tatsuya Nakazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Narrow band tone detection in echo canceling system
- Publication number 20050169458
- Publication date Aug 4, 2005
- Mitel Networks Corporation
- Renee Johnston
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for fast DTMF detection
- Publication number 20050100121
- Publication date May 12, 2005
- Joachim Fouret
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tone detector and method therefor
- Publication number 20040047370
- Publication date Mar 11, 2004
- Lucio F.C. Pessoa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Apparatus and method for unified tone detection
- Publication number 20030076943
- Publication date Apr 24, 2003
- Sharmistha Sarkar Das
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Voice transmitter
- Publication number 20020141552
- Publication date Oct 3, 2002
- Wataru Fushimi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for signal frequency decoding without an analo...
- Publication number 20020138164
- Publication date Sep 26, 2002
- Hedley David
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Frequency error detection methods and systems using the same
- Publication number 20020097860
- Publication date Jul 25, 2002
- Cirrus Logic, Inc.
- Manoj Soman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Efficient digital ITU-compliant zero-buffering DTMF detection using...
- Publication number 20020080954
- Publication date Jun 27, 2002
- Matthew D. Felder
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DTMF DECODER
- Publication number 20020080953
- Publication date Jun 27, 2002
- HIROAKI HARADA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

which are transmitted in digital form

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

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

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

Method and apparatus for transmitting signaling

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

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

Multi-frequency tone detector

Methods and apparatus to decode dual-tone signals

Erasure of DTMF signal transmitted as speech data

Multi-frequency detector

Narrow band tone detection in echo canceling system

Tone detector and method therefor

Method and apparatus for fast DTMF detection

System and method for DTMF detection using likelihood ratios

Frequency error detection methods and systems using the same

Method and apparatus for signal frequency decoding without an analo...

Devices, software and methods for passing DTMF signals under voice...

Apparatus and method for unified tone detection

Voice transmitter

Apparatus for receiving tone signal, apparatus for transmitting ton...

Method and system for transmitting a DTMF signal with compressed vo...

Efficient digital ITU-compliant zero-buffering DTMF detection using...

DTMF detection based on LPC coefficients

Signal detector with automatic gain control

System and method for precise DTMF signal detection

Efficient digital ITU-compliant zero-buffering DTMF detection using...

Method and apparatus for detecting signal misalignment

Device for detecting DTMF tones

Transmission of voice-frequency signals in a mobile telephone system

Tone detector

DTMF detector for detecting DTMF signals using a digital signal pro...

Patents Applicationslast 30 patents

REMOTE DEVICE INTERFACE AND TELEPHONE ENTRY SYSTEM

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

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

METHOD AND APPARATUS FOR TRANMITTING SIGNALING

METHODS AND APPARATUS FOR EFFICIENT TONE DETECTION

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

MULTI-FREQUENCY TONE DETECTOR

METHODS AND APPARATUS TO DECODE DUAL-TONE SIGNALS

METHOD FOR DETECTING A CPE ALERT SIGNAL OF A TELECOMMUNICATION SYST...

Multi-frequency detector

METHOD FOR DETECTING A CPE ALERT SIGNAL OF A TELECOMMUNICATION SYST...

Erasure of DTMF signal transmitted as speech data

Narrow band tone detection in echo canceling system

Method and apparatus for fast DTMF detection

Tone detector and method therefor

Apparatus and method for unified tone detection

Voice transmitter

Method and apparatus for signal frequency decoding without an analo...

Frequency error detection methods and systems using the same

Efficient digital ITU-compliant zero-buffering DTMF detection using...

DTMF DECODER