DE68923689T2 - Fernsprechweckdetektor. - Google Patents

Fernsprechweckdetektor.

Info

Publication number
DE68923689T2
DE68923689T2 DE68923689T DE68923689T DE68923689T2 DE 68923689 T2 DE68923689 T2 DE 68923689T2 DE 68923689 T DE68923689 T DE 68923689T DE 68923689 T DE68923689 T DE 68923689T DE 68923689 T2 DE68923689 T2 DE 68923689T2
Authority
DE
Germany
Prior art keywords
detector
wake
telephone
telephone wake
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 - Fee Related
Application number
DE68923689T
Other languages
English (en)
Other versions
DE68923689D1 (de
Inventor
Kenneth Allen Houck
Dewayne Alan Spires
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.)
AT&T Corp
Original Assignee
AT&T 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 AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of DE68923689D1 publication Critical patent/DE68923689D1/de
Publication of DE68923689T2 publication Critical patent/DE68923689T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • 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
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Telephonic Communication Services (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephone Function (AREA)
DE68923689T 1988-12-13 1989-12-12 Fernsprechweckdetektor. Expired - Fee Related DE68923689T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/283,776 US4939775A (en) 1988-12-13 1988-12-13 Telephone ringing detector

Publications (2)

Publication Number Publication Date
DE68923689D1 DE68923689D1 (de) 1995-09-07
DE68923689T2 true DE68923689T2 (de) 1996-01-25

Family

ID=23087501

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68923689T Expired - Fee Related DE68923689T2 (de) 1988-12-13 1989-12-12 Fernsprechweckdetektor.

Country Status (6)

Country Link
US (1) US4939775A (de)
EP (1) EP0373887B1 (de)
JP (1) JPH0785565B2 (de)
KR (1) KR0138267B1 (de)
CA (1) CA2005260C (de)
DE (1) DE68923689T2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0817437B2 (ja) * 1989-11-29 1996-02-21 シャープ株式会社 ファクシミリ装置
US5228081A (en) * 1990-10-18 1993-07-13 Ag Communication Systems Corporation Ringing signal control circuit for an enhanced subscriber line interface
US5361296A (en) * 1991-11-25 1994-11-01 Zoom Telephonics, Inc. Modem with ring detection/modem processing capability
US5544241A (en) * 1995-06-27 1996-08-06 Andrew S. Dibner Telephone ring detector
US5880850A (en) * 1996-04-18 1999-03-09 American Air Liquide Inc Method and system for sensitive detection of molecular species in a vacuum by harmonic detection spectroscopy
US6058171A (en) * 1996-08-14 2000-05-02 Oakley Telecom, Lc Unique ring caller ID
JPH10308801A (ja) 1997-05-09 1998-11-17 Matsushita Electric Ind Co Ltd 電話機
US5920624A (en) * 1997-06-16 1999-07-06 Dasym Technologies Inc. Telephone ring signal detector
US7110798B2 (en) * 2002-05-09 2006-09-19 Shary Nassimi Wireless headset

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603740A (en) * 1969-08-18 1971-09-07 Northern Electric Co Method and means for ringing a telephone subset
US3808379A (en) * 1972-05-30 1974-04-30 Gte Automatic Electric Lab Inc Telephone tone ringer
US3816669A (en) * 1972-11-01 1974-06-11 Electrospace Corp Apparatus for detecting telephone ringing signals
JPS52132609A (en) * 1976-04-30 1977-11-07 Pioneer Electronic Corp Starting circuit
US4066848A (en) * 1976-09-07 1978-01-03 T.A.D. Telephone ring detector circuit
US4390843A (en) * 1981-02-09 1983-06-28 Paradyne Corporation Telephone system ring period detector
FR2532133A1 (fr) * 1982-08-17 1984-02-24 Labo Cent Telecommunicat Circuit de sonnerie pour poste telephonique, realisable en circuit integre
US4491691A (en) * 1983-02-28 1985-01-01 At&T Bell Laboratories Electronic tone ringer
JPS61237559A (ja) * 1985-04-15 1986-10-22 Ricoh Co Ltd 呼出信号検出回路

Also Published As

Publication number Publication date
EP0373887A2 (de) 1990-06-20
EP0373887B1 (de) 1995-08-02
CA2005260C (en) 1994-03-08
DE68923689D1 (de) 1995-09-07
KR0138267B1 (ko) 1998-06-15
KR900010403A (ko) 1990-07-07
CA2005260A1 (en) 1990-06-13
EP0373887A3 (de) 1991-10-23
JPH0785565B2 (ja) 1995-09-13
US4939775A (en) 1990-07-03
JPH02244944A (ja) 1990-09-28

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee