CA2078041A1 - Circuit de detection de combine decroche - Google Patents

Circuit de detection de combine decroche

Info

Publication number
CA2078041A1
CA2078041A1 CA2078041A CA2078041A CA2078041A1 CA 2078041 A1 CA2078041 A1 CA 2078041A1 CA 2078041 A CA2078041 A CA 2078041A CA 2078041 A CA2078041 A CA 2078041A CA 2078041 A1 CA2078041 A1 CA 2078041A1
Authority
CA
Canada
Prior art keywords
pair
terminals
detection circuit
transistors
coupled
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.)
Granted
Application number
CA2078041A
Other languages
English (en)
Other versions
CA2078041C (fr
Inventor
Kenji Takato
Kazumi Kinoshita
Kiyoshi Kurosaki
Taichi Kosako
Kazuyuki Minohara
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.)
Fujitsu Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2078041A1 publication Critical patent/CA2078041A1/fr
Application granted granted Critical
Publication of CA2078041C publication Critical patent/CA2078041C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/026—Arrangements for interrupting the ringing current

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
CA002078041A 1991-09-12 1992-09-11 Circuit de detection de combine decroche Expired - Fee Related CA2078041C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3232677A JPH05145627A (ja) 1991-09-12 1991-09-12 リングトリツプ検出回路
JP3-232677 1991-09-12

Publications (2)

Publication Number Publication Date
CA2078041A1 true CA2078041A1 (fr) 1993-03-13
CA2078041C CA2078041C (fr) 1996-09-10

Family

ID=16943065

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002078041A Expired - Fee Related CA2078041C (fr) 1991-09-12 1992-09-11 Circuit de detection de combine decroche

Country Status (3)

Country Link
US (1) US5335271A (fr)
JP (1) JPH05145627A (fr)
CA (1) CA2078041C (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5812658A (en) * 1995-01-30 1998-09-22 Harris Corp. Method and circuit for failsafe switch-hook detection during fault in a telephone system
US5671272A (en) * 1995-01-30 1997-09-23 Harris Corporation Current mode ring trip detector
US5544241A (en) * 1995-06-27 1996-08-06 Andrew S. Dibner Telephone ring detector
KR100233097B1 (ko) 1996-10-09 1999-12-01 윤종용 전화라인 인터페이스 회로의 링신호 및 훅크스위치의 상태 검출회로
JPH10164223A (ja) * 1996-11-26 1998-06-19 Nec Corp リングトリップ回路
US6094480A (en) * 1997-06-26 2000-07-25 Fujitsu Network Communications, Inc. Ring trip detector
EP1107552A3 (fr) * 1999-12-10 2003-07-16 Intersil Corporation Appareil et méthode pour tester des circuits d'interface de boucle d'abonné
JP4598691B2 (ja) * 2006-02-22 2010-12-15 富士通セミコンダクター株式会社 Ｐｌｌ回路及び半導体装置
DE102007015192B4 (de) * 2007-03-29 2010-07-08 Infineon Technologies Ag Regelungsschaltung und Verfahren zur Regelung einer Versorgungsgleichspannung für ein Endgerät
DE102008011603B4 (de) * 2008-02-28 2009-12-31 Semikron Elektronik Gmbh & Co. Kg Schaltung und Verfahren zur Signalspannungsübertragung innerhalb eines Treibers eines Leistungshalbleiterschalters
WO2009112889A1 (fr) * 2008-03-13 2009-09-17 Freescale Semiconductor, Inc. Détecteur de puissance

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470498A1 (fr) * 1979-11-21 1981-05-29 Trt Telecom Radio Electr Dispositif de detection du bouclage d'une ligne d'abonne pendant la sonnerie
CA1260170A (fr) * 1985-08-20 1989-09-26 Kenji Takato Circuit d'interface pour ligne d'abonne
CA1291835C (fr) * 1987-06-19 1991-11-05 Toshiro Tojo Circuit de declenchement de sonnerie pour telephone d'abonne

Also Published As

Publication number Publication date
JPH05145627A (ja) 1993-06-11
US5335271A (en) 1994-08-02
CA2078041C (fr) 1996-09-10

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed