with conversion of multifrequency signals into digital signals

Industry

CPC
H04Q1/457

This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

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

H04Q1/457with conversion of multifrequency signals into digital signals

Industries

Please log in for detailed analytics

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 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
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
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
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 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
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
Tone signal circuit and wireless receiver
- Patent number 8,731,112
- Issue date May 20, 2014
- Icom Incorporated
- Kouichiro Yamaguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for reducing call latency in monitored calls
- Patent number 8,688,030
- Issue date Apr 1, 2014
- BlackBerry Limited
- Yuriy Lobzakov
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
DTMF tone monitoring apparatus and method of identifying a DTMF tone
- Patent number 8,681,824
- Issue date Mar 25, 2014
- Freeascale Semiconductor, Inc.
- Dragos Ion
- 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
System and method for reducing call latency in monitored calls
- Patent number 8,385,815
- Issue date Feb 26, 2013
- Research in Motion Limited
- Yuriy Lobzakov
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone communications system increasing a reception count twofold
- Patent number 8,374,322
- Issue date Feb 12, 2013
- NEC Infrontia Corporation
- Junichi Yamagishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dual-rate single band communication system
- Patent number 8,229,037
- Issue date Jul 24, 2012
- Broadcom Corporation
- Wilf LeBlanc
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Device and method for preventing wiretapping on power line
- Patent number 8,223,008
- Issue date Jul 17, 2012
- Electronics and Telecommunications Research Institute
- Kyung Hoon Lee
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tone detector and method used in a robot for detecting a tone
- Patent number 8,155,327
- Issue date Apr 10, 2012
- Sonix Technology Co., Ltd.
- Yao-Sheng Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multi-tone signal discriminator
- Patent number 8,050,397
- Issue date Nov 1, 2011
- Cisco Technology, Inc.
- Brooks Stevens Read
- 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
Selective tone event detector and method therefor
- Patent number 7,844,048
- Issue date Nov 30, 2010
- FREESCALE SEMICONDUCTOR, INC.
- Lucio F. C. Pessoa
- 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
Dual-rate single band communication system
- Patent number 7,606,330
- Issue date Oct 20, 2009
- Broadcom Corporation
- Wilf LeBlanc
- 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
DTMF tone detection
- Patent number 7,184,542
- Issue date Feb 27, 2007
- Hewlett-Packard Development, L.P.
- Pierre Sauvage
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for early detection of DTMF signals in voice t...
- Patent number 7,039,044
- Issue date May 2, 2006
- Mindspeed Technologies, Inc.
- Michael C. Whitfield
- 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

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
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
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
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
METHOD AND APPARATUS FOR DETECTING A SET UP SIGNAL USED FOR DATA CO...
- Publication number 20110032827
- Publication date Feb 10, 2011
- Adrian Susan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DTMF TONE MONITORING APPARATUS AND METHOD OF IDENTIFYING A DTMF TONE
- Publication number 20100329367
- Publication date Dec 30, 2010
- FREESCALE SEMICONDUCTOR, INC.
- Dragos Ion
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM AND METHOD FOR REDUCING CALL LATENCY IN MONITORED CALLS
- Publication number 20100220609
- Publication date Sep 2, 2010
- ASCENDENT TELECOMMUNICATIONS INC.
- Yuriy Lobzakov
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DUAL-RATE SINGLE BAND COMMUNICATION SYSTEM
- Publication number 20100104049
- Publication date Apr 29, 2010
- Wilf LeBlanc
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TONE DETECTOR AND METHOD USED IN A ROBOT FOR DETECTING A TONE
- Publication number 20100086140
- Publication date Apr 8, 2010
- SONIX TECHNOLOGY CO., LTD.
- Yao-Sheng CHEN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TELEPHONE COMMUNICATIONS SYSTEM INCREASING A RECEPTION COUNT TWOFOLD
- Publication number 20100034329
- Publication date Feb 11, 2010
- NEC INFRONTIA CORPORATION
- Junichi YAMAGISHI
- 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
DEVICE AND METHOD FOR PREVENTING WIRETAPPING ON POWER LINE
- Publication number 20090063602
- Publication date Mar 5, 2009
- Kyung Hoon LEE
- 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
Tone event detector and method therefor
- Publication number 20050195967
- Publication date Sep 8, 2005
- Lucio F. C. Pessoa
- 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
Dual-rate single band communication system
- Publication number 20040062330
- Publication date Apr 1, 2004
- Wilf LeBlanc
- 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
DTMF tone detection
- Publication number 20030235291
- Publication date Dec 25, 2003
- Pierre Sauvage
- 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

with conversion of multifrequency signals into digital signals

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 detecting a set up signal used for data co...

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

Method and apparatus for transmitting signaling

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

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

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

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

Tone signal circuit and wireless receiver

System and method for reducing call latency in monitored calls

DTMF tone monitoring apparatus and method of identifying a DTMF tone

Multi-frequency tone detector

Methods and apparatus to decode dual-tone signals

System and method for reducing call latency in monitored calls

Telephone communications system increasing a reception count twofold

Dual-rate single band communication system

Device and method for preventing wiretapping on power line

Tone detector and method used in a robot for detecting a tone

Multi-tone signal discriminator

Erasure of DTMF signal transmitted as speech data

Selective tone event detector and method therefor

Multi-frequency detector

Narrow band tone detection in echo canceling system

Dual-rate single band communication system

Tone detector and method therefor

Method and apparatus for fast DTMF detection

DTMF tone detection

Method and apparatus for early detection of DTMF signals in voice t...

System and method for DTMF detection using likelihood ratios

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

SYSTEM AND METHOD FOR REDUCING CALL LATENCY IN MONITORED CALLS

TONE SIGNAL CIRCUIT AND WIRELESS RECEIVER

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

METHOD AND APPARATUS FOR DETECTING A SET UP SIGNAL USED FOR DATA CO...

DTMF TONE MONITORING APPARATUS AND METHOD OF IDENTIFYING A DTMF TONE

SYSTEM AND METHOD FOR REDUCING CALL LATENCY IN MONITORED CALLS

DUAL-RATE SINGLE BAND COMMUNICATION SYSTEM

TONE DETECTOR AND METHOD USED IN A ROBOT FOR DETECTING A TONE

TELEPHONE COMMUNICATIONS SYSTEM INCREASING A RECEPTION COUNT TWOFOLD

METHODS AND APPARATUS TO DECODE DUAL-TONE SIGNALS

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

DEVICE AND METHOD FOR PREVENTING WIRETAPPING ON POWER LINE

Multi-frequency detector

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

Erasure of DTMF signal transmitted as speech data

Tone event detector and method therefor

Narrow band tone detection in echo canceling system

Method and apparatus for fast DTMF detection

Dual-rate single band communication system

Tone detector and method therefor

DTMF tone detection

Apparatus and method for unified tone detection

Voice transmitter