DE3778411D1 - Tonfrequenzsignal-identifiziergeraet. - Google Patents

Tonfrequenzsignal-identifiziergeraet.

Info

Publication number
DE3778411D1
DE3778411D1 DE8787102963T DE3778411T DE3778411D1 DE 3778411 D1 DE3778411 D1 DE 3778411D1 DE 8787102963 T DE8787102963 T DE 8787102963T DE 3778411 T DE3778411 T DE 3778411T DE 3778411 D1 DE3778411 D1 DE 3778411D1
Authority
DE
Germany
Prior art keywords
frequency signal
sound frequency
signal identifier
identifier
sound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE8787102963T
Other languages
English (en)
Inventor
Yasuo Furukawa
Katsuyuki Yamazaki
Takemi Hosaka
Akira Fukui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kokusai Denshin Denwa KK, NEC Corp filed Critical Kokusai Denshin Denwa KK
Application granted granted Critical
Publication of DE3778411D1 publication Critical patent/DE3778411D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/448—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency with conversion of a single frequency signal into a digital signal
    • H04Q1/4485—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency with conversion of a single frequency signal into a digital signal which is transmitted in digital form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Complex Calculations (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
DE8787102963T 1986-03-04 1987-03-03 Tonfrequenzsignal-identifiziergeraet. Expired - Lifetime DE3778411D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61047596A JPS62204652A (ja) 1986-03-04 1986-03-04 可聴周波信号識別方式

Publications (1)

Publication Number Publication Date
DE3778411D1 true DE3778411D1 (de) 1992-05-27

Family

ID=12779625

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787102963T Expired - Lifetime DE3778411D1 (de) 1986-03-04 1987-03-03 Tonfrequenzsignal-identifiziergeraet.

Country Status (4)

Country Link
US (1) US4797931A (de)
EP (1) EP0239809B1 (de)
JP (1) JPS62204652A (de)
DE (1) DE3778411D1 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005210A (en) * 1987-12-30 1991-04-02 The Boeing Company Method and apparatus for characterizing a radio transmitter
US5459785A (en) * 1992-08-04 1995-10-17 Rohm Co., Ltd. DTMF signal receiving circuit
US5448760A (en) * 1993-06-08 1995-09-05 Corsair Communications, Inc. Cellular telephone anti-fraud system
US5420910B1 (en) * 1993-06-29 1998-02-17 Airtouch Communications Inc Method and apparatus for fraud control in cellular telephone systems utilizing rf signature comparison
US5950121A (en) * 1993-06-29 1999-09-07 Airtouch Communications, Inc. Method and apparatus for fraud control in cellular telephone systems
US5854808A (en) * 1993-09-14 1998-12-29 Pacific Communication Sciences Methods and apparatus for detecting the presence of a prescribed signal in a channel of a communications system
US5574750A (en) * 1993-09-14 1996-11-12 Pacific Communication Sciences, Inc. Methods and apparatus for detecting a cellular digital packet data (CDPD) carrier
JPH07226779A (ja) * 1994-02-15 1995-08-22 Nec Eng Ltd 周波数検出回路
US5577117A (en) * 1994-06-09 1996-11-19 Northern Telecom Limited Methods and apparatus for estimating and adjusting the frequency response of telecommunications channels
FR2727236B1 (fr) * 1994-11-22 1996-12-27 Alcatel Mobile Comm France Detection d'activite vocale
US6313620B1 (en) * 1995-09-14 2001-11-06 Northrop Grumman Corporation Detector system for identifying the frequency of a received signal useful in a channelized receiver
US5893031A (en) * 1996-06-27 1999-04-06 Cellular Technical Services Company, Inc. System and method for collection of transmission characteristics
KR100305137B1 (ko) * 1998-12-07 2001-11-30 윤종용 이중모드무선전화기
JP3961290B2 (ja) * 1999-09-30 2007-08-22 富士通株式会社 雑音抑圧装置
JP3551870B2 (ja) 1999-11-24 2004-08-11 日本電気株式会社 Ｖｄｔ障害緩和装置／方法およびｖｄｔ障害危険性定量化装置／方法ならびに記録媒体
JP4123725B2 (ja) * 2001-02-23 2008-07-23 沖電気工業株式会社 トーン信号検出装置及び方法
JP3560936B2 (ja) * 2001-06-05 2004-09-02 オープンインタフェース株式会社 感性データ算出方法および感性データ算出装置
US20060203946A1 (en) * 2005-03-11 2006-09-14 Lockheed Martin Corporation Channelized receiver system with architecture for signal detection and discrimination
US8458737B2 (en) 2007-05-02 2013-06-04 The Nielsen Company (Us), Llc Methods and apparatus for generating signatures
US8600531B2 (en) 2008-03-05 2013-12-03 The Nielsen Company (Us), Llc Methods and apparatus for generating signatures
NL1037238C2 (en) * 2009-08-31 2011-03-03 V S N Beheer B V A method of and a device for quantifying a tone signal received in a telecommunications network.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416081A (en) * 1965-09-08 1968-12-10 Itt Frequency spectrum analyzer utilizing correlation detectors wherein the output is suppressed until a particular response is obtained
US4045620A (en) * 1976-05-10 1977-08-30 Conrac Corporation Digital tone detector
IT1072242B (it) * 1976-12-17 1985-04-10 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per il riconoscimento di segnali telefonici in codice multifrequenza convertiti in forma numerica
US4354248A (en) * 1979-11-28 1982-10-12 Motorola, Inc. Programmable multifrequency tone receiver
FR2485843B1 (fr) * 1980-06-25 1986-11-07 Cit Alcatel Recepteur numerique de frequences
GB2111348B (en) * 1981-11-12 1985-06-12 Plessey Co Plc V.f. receivers for use in digital switching systems
NL8200051A (nl) * 1982-01-08 1983-08-01 Philips Nv Inrichting en werkwijze voor het detecteren van multifrequentie tooncodesignalen.
US4528664A (en) * 1982-11-29 1985-07-09 Northern Telecom Limited Call progress signal monitor and method for telephone systems
US4599567A (en) * 1983-07-29 1986-07-08 Enelf Inc. Signal representation generator
US4640134A (en) * 1984-04-04 1987-02-03 Bio-Dynamics Research & Development Corporation Apparatus and method for analyzing acoustical signals
US4667065A (en) * 1985-02-28 1987-05-19 Bangerter Richard M Apparatus and methods for electrical signal discrimination

Also Published As

Publication number Publication date
EP0239809A3 (en) 1989-03-22
EP0239809B1 (de) 1992-04-22
JPS62204652A (ja) 1987-09-09
US4797931A (en) 1989-01-10
EP0239809A2 (de) 1987-10-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition