comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency

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H04Q1/46

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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

H04Q1/46comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for transmitting PLCP frame in wireless local...
- Patent number 11,902,068
- Issue date Feb 13, 2024
- Telefonaktiebolaget LM Ericsson (publ)
- Dae Won Lee
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Method and apparatus for transmitting PLCP frame in wireless local...
- Patent number 11,196,600
- Issue date Dec 7, 2021
- Wi-Fi One, LLC
- Dae Won Lee
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
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
Method and apparatus for transmitting PLCP frame in wireless local...
- Patent number 10,616,021
- Issue date Apr 7, 2020
- Wi-Fi One, LLC
- Dae Won Lee
- H03 - BASIC ELECTRONIC CIRCUITRY
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
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
Method and apparatus for transmitting PLCP frame in wireless local...
- Patent number 10,142,149
- Issue date Nov 27, 2018
- Wi-Fi One, LLC
- Dae Won Lee
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
System for digital time shifting and method thereof
- Patent number RE47054
- Issue date Sep 18, 2018
- ATI Technologies ULC
- Branko Kovacevic
Information Patent Grant
Method and apparatus for transmitting PLCP frame in wireless local...
- Patent number 9,876,662
- Issue date Jan 23, 2018
- Wi-Fi One, LLC
- Dae Won Lee
- H03 - BASIC ELECTRONIC CIRCUITRY
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
Tone detection for signals sent through a vocoder
- Patent number 9,208,797
- Issue date Dec 8, 2015
- General Motors LLC
- Sethu K. Madhavan
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Tunable filter for tone detection
- Patent number 8,270,458
- Issue date Sep 18, 2012
- MStar Semiconductor, Inc.
- Cyril Valadon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for transmitting signaling tones over a packet...
- Patent number 7,949,125
- Issue date May 24, 2011
- AudioCodes Ltd.
- Eli Shoval
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone detector judging a detection of a predetermined tone signal by...
- Patent number 7,804,942
- Issue date Sep 28, 2010
- Ricoh Company, Ltd.
- Masanori Itoh
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for tone detection
- Patent number 7,715,447
- Issue date May 11, 2010
- Intel Corporation
- Sui Lam
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for processing tones to reduce false detection of...
- Patent number 7,187,656
- Issue date Mar 6, 2007
- General Instrument Corporation
- David B. Lazarus
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for DTMF detection and voice mixing in the CEL...
- Patent number 7,133,521
- Issue date Nov 7, 2006
- Dilithium Networks Pty Ltd.
- Marwan Anwar Jabri
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Dual hysteresis signal detection circuit
- Patent number 7,095,845
- Issue date Aug 22, 2006
- Winbond Electronics Corp.
- Meiwen Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone detector judging a detection of a predetermined tone signal by...
- Patent number 7,035,394
- Issue date Apr 25, 2006
- Ricoh Company, Ltd.
- Masanori Itoh
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone relay
- Patent number 7,035,293
- Issue date Apr 25, 2006
- Broadcom Corporation
- Scott Branden
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone detector with noise detection and dynamic thresholding for rob...
- Patent number 7,024,357
- Issue date Apr 4, 2006
- Legerity, Inc.
- John G. Bartkowiak
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Multi-frequency tone detector
- Patent number 7,010,117
- Issue date Mar 7, 2006
- Zarlink Semiconductor Inc.
- Dieter Schulz
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone detection for integrated telecommunications processing
- Patent number 7,003,093
- Issue date Feb 21, 2006
- Intel Corporation
- Raghavendra S. Prabhu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Detection of both voice and tones using Goertzel filters
- Patent number 6,950,511
- Issue date Sep 27, 2005
- Avaya Technology Corp.
- Sharmistha Das
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Universal telephony tones detector
- Patent number 6,868,116
- Issue date Mar 15, 2005
- Nortel Networks Limited
- Jamil Ahmad
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for performing spectral processing in tone det...
- Patent number 6,782,095
- Issue date Aug 24, 2004
- Nortel Networks Limited
- Michael Leong
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Tone detector with noise detection and dynamic thresholding for rob...
- Patent number 6,711,540
- Issue date Mar 23, 2004
- Legerity, Inc.
- John G. Bartkowiak
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Method and system for reliably detecting voiceband signaling tones
- Patent number 6,694,011
- Issue date Feb 17, 2004
- Telcordia Technologies, Inc.
- Stanley Pietrowicz
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone signal detecting method and tone signal detector
- Patent number 6,687,368
- Issue date Feb 3, 2004
- Oki Electric Industry Co., Ltd.
- Hiromi Aoyagi
- 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

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR TRANSMITTING PLCP FRAME IN WIRELESS LOCAL...
- Publication number 20190052496
- Publication date Feb 14, 2019
- WI-FI ONE, LLC
- Dae Won LEE
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
METHOD AND APPARATUS FOR TRANSMITTING PLCP FRAME IN WIRELESS LOCAL...
- Publication number 20180109405
- Publication date Apr 19, 2018
- WI-FI ONE, LLC
- Dae Won LEE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Telephone Call Processing
- Publication number 20170332153
- Publication date Nov 16, 2017
- Ultra Communications Ltd
- Craig Shilling
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LOW COMPLEXITY TONE/VOICE DISCRIMINATION METHOD USING A RISING EDGE...
- Publication number 20150373429
- Publication date Dec 24, 2015
- Intel Corporation
- Dariusz Dzik
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TONE DETERMINATION DEVICE AND TONE DETERMINATION METHOD
- Publication number 20110301946
- Publication date Dec 8, 2011
- PANASONIC CORPORATION
- Kaoru Satoh
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for transmitting signaling tones over a packet...
- Publication number 20100020962
- Publication date Jan 28, 2010
- Eli Shoval
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TONE DETECTION FOR SIGNALS SENT THROUGH A VOCODER
- Publication number 20090265173
- Publication date Oct 22, 2009
- GENERAL MOTORS CORPORATION
- Sethu K. Madhavan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TUNABLE FILTER FOR TONE DETECTION
- Publication number 20070265791
- Publication date Nov 15, 2007
- MOTOROLA, INC.
- CYRIL VALADON
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for DTMF detection and voice mixing in the CEL...
- Publication number 20070025546
- Publication date Feb 1, 2007
- Dilithium Networks Pty Ltd.
- Marwan Anwar Jabri
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Multi-frequency tone detector
- Publication number 20060098806
- Publication date May 11, 2006
- Dieter Schulz
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tone detector judging a detection of a predetermined tone signal by...
- Publication number 20060008074
- Publication date Jan 12, 2006
- Masanori Itoh
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and system for tone detection
- Publication number 20050135431
- Publication date Jun 23, 2005
- Siu Lam
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Detection of both voice and tones using Goertzel filters
- Publication number 20050105716
- Publication date May 19, 2005
- Sharmistha Das
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Methods and apparatus for detecting signaling tones in telephony da...
- Publication number 20050058273
- Publication date Mar 17, 2005
- Siu H. Lam
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tone detector with noise detection and dynamic thresholding for rob...
- Publication number 20040181402
- Publication date Sep 16, 2004
- Legerity, Inc.
- John G. Bartkowiak
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for DTMF detection and voice mixing in the CEL...
- Publication number 20040174984
- Publication date Sep 9, 2004
- Dilithium Networks Pty Ltd.
- Marwan Anwar Jabri
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Apparatus and method for detecting a tone disconnect signal in the...
- Publication number 20030223572
- Publication date Dec 4, 2003
- Larry John Roybal
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tone detection and echo cancellation in a communications network
- Publication number 20030206625
- Publication date Nov 6, 2003
- Jamil Ahmad
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and system for processing tones to reduce false detection of...
- Publication number 20030206563
- Publication date Nov 6, 2003
- General Instrument Corporation
- David B. Lazarus
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for transmitting signaling tones over a packet...
- Publication number 20030194082
- Publication date Oct 16, 2003
- Eli Shoval
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tone detector judging a detection of a predetermined tone signal by...
- Publication number 20030123647
- Publication date Jul 3, 2003
- Masanori Itoh
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Dual hysteresis signal detection circuit
- Publication number 20030021407
- Publication date Jan 30, 2003
- WINBOND ELECTRONICS CORP.
- Meiwen Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Neural net-call progress tone detector
- Publication number 20020172349
- Publication date Nov 21, 2002
- Phillip N. Shea
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tone detection and echo cancellation in a communications network
- Publication number 20020154764
- Publication date Oct 24, 2002
- Jamil Ahmad
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tone relay
- Publication number 20020154760
- Publication date Oct 24, 2002
- Scott Branden
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and system for reliably detecting voiceband signaling tones
- Publication number 20020150233
- Publication date Oct 17, 2002
- Stanley Pietrowicz
- 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
Tone detection for integrated telecommunications processing
- Publication number 20020076034
- Publication date Jun 20, 2002
- Raghavendra S. Prabhu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method of detecting a frequency or a combination of frequencies in...
- Publication number 20020018555
- Publication date Feb 14, 2002
- ALCATEL
- Baptistine Charbin-Pramayon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Multi-frequency tone detector
- Publication number 20010036260
- Publication date Nov 1, 2001
- Mitel Knowledge Corporation
- Dieter Schulz
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Method and apparatus for transmitting PLCP frame in wireless local...

Method and apparatus for transmitting PLCP frame in wireless local...

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

Method and apparatus for transmitting PLCP frame in wireless local...

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

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

Method and apparatus for transmitting PLCP frame in wireless local...

System for digital time shifting and method thereof

Method and apparatus for transmitting PLCP frame in wireless local...

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

Tone detection for signals sent through a vocoder

Tunable filter for tone detection

Method and apparatus for transmitting signaling tones over a packet...

Tone detector judging a detection of a predetermined tone signal by...

Method and system for tone detection

Method and system for processing tones to reduce false detection of...

Method and apparatus for DTMF detection and voice mixing in the CEL...

Dual hysteresis signal detection circuit

Tone detector judging a detection of a predetermined tone signal by...

Tone relay

Tone detector with noise detection and dynamic thresholding for rob...

Multi-frequency tone detector

Tone detection for integrated telecommunications processing

Detection of both voice and tones using Goertzel filters

Universal telephony tones detector

Method and apparatus for performing spectral processing in tone det...

Tone detector with noise detection and dynamic thresholding for rob...

Method and system for reliably detecting voiceband signaling tones

Tone signal detecting method and tone signal detector

Voice transmitter

Patents Applicationslast 30 patents

METHOD AND APPARATUS FOR TRANSMITTING PLCP FRAME IN WIRELESS LOCAL...

METHOD AND APPARATUS FOR TRANSMITTING PLCP FRAME IN WIRELESS LOCAL...

Telephone Call Processing

LOW COMPLEXITY TONE/VOICE DISCRIMINATION METHOD USING A RISING EDGE...

TONE DETERMINATION DEVICE AND TONE DETERMINATION METHOD

Method and apparatus for transmitting signaling tones over a packet...

TONE DETECTION FOR SIGNALS SENT THROUGH A VOCODER

TUNABLE FILTER FOR TONE DETECTION

Method and apparatus for DTMF detection and voice mixing in the CEL...

Multi-frequency tone detector

Tone detector judging a detection of a predetermined tone signal by...

Method and system for tone detection

Detection of both voice and tones using Goertzel filters

Methods and apparatus for detecting signaling tones in telephony da...

Tone detector with noise detection and dynamic thresholding for rob...

Method and apparatus for DTMF detection and voice mixing in the CEL...

Apparatus and method for detecting a tone disconnect signal in the...

Tone detection and echo cancellation in a communications network

Method and system for processing tones to reduce false detection of...

Method and apparatus for transmitting signaling tones over a packet...

Tone detector judging a detection of a predetermined tone signal by...

Dual hysteresis signal detection circuit

Neural net-call progress tone detector

Tone detection and echo cancellation in a communications network

Tone relay

Method and system for reliably detecting voiceband signaling tones

Voice transmitter

Tone detection for integrated telecommunications processing

Method of detecting a frequency or a combination of frequencies in...

Multi-frequency tone detector