CA2273148A1 - Telephone line coupler - Google Patents

Telephone line coupler Download PDF

Info

Publication number
CA2273148A1
CA2273148A1 CA002273148A CA2273148A CA2273148A1 CA 2273148 A1 CA2273148 A1 CA 2273148A1 CA 002273148 A CA002273148 A CA 002273148A CA 2273148 A CA2273148 A CA 2273148A CA 2273148 A1 CA2273148 A1 CA 2273148A1
Authority
CA
Canada
Prior art keywords
coupler
opto
output
line
telephone line
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
CA002273148A
Other languages
French (fr)
Other versions
CA2273148C (en
Inventor
Pinhas Shpater
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.)
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24215746&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2273148(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2273148A1 publication Critical patent/CA2273148A1/en
Application granted granted Critical
Publication of CA2273148C publication Critical patent/CA2273148C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
    • H04M1/745—Protection devices or circuits for voltages surges on the line

Abstract

The telephone line coupler circuit has a single transmit opto-coupler whose output includes a DC bias component connected to a gate of a line seize switch for connecting a DC line seize load across the ring and tip contacts of the telephone line. The line seize switch is saturated by the transmit opto-coupler bias output and the AC component of the transmit opto-coupler output is sent over the telephone lines. The receive opto-coupler is used both for receiving communications signal and for detecting the ring signal. The band pass filter connected to the output of the receive opto-coupler may be switched to pass a ring signal frequency band or a communications frequency band. The circuit operates using two opto-coupler devices while conventional circuits require for opto-coupler devices.
CA002273148A 1995-11-08 1996-02-16 Telephone line coupler Expired - Fee Related CA2273148C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/555,042 US5751803A (en) 1995-11-08 1995-11-08 Telephone line coupler
US08/555,042 1995-11-08
CA002169670A CA2169670C (en) 1995-11-08 1996-02-16 Telephone line coupler

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002169670A Division CA2169670C (en) 1995-11-08 1996-02-16 Telephone line coupler

Publications (2)

Publication Number Publication Date
CA2273148A1 true CA2273148A1 (en) 1997-05-09
CA2273148C CA2273148C (en) 2002-06-25

Family

ID=24215746

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002169670A Expired - Fee Related CA2169670C (en) 1995-11-08 1996-02-16 Telephone line coupler
CA002273148A Expired - Fee Related CA2273148C (en) 1995-11-08 1996-02-16 Telephone line coupler

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002169670A Expired - Fee Related CA2169670C (en) 1995-11-08 1996-02-16 Telephone line coupler

Country Status (2)

Country Link
US (3) US5751803A (en)
CA (2) CA2169670C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE42590E1 (en) 1995-11-08 2011-08-02 Pinhas Shpater Telephone line coupler

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0175447B1 (en) * 1995-12-26 1999-04-01 김광호 Ring Detection Circuit and Method for Wired / Wireless Combined Telephone
US6339048B1 (en) * 1999-12-23 2002-01-15 Elementis Specialties, Inc. Oil and oil invert emulsion drilling fluids with improved anti-settling properties
US6385235B1 (en) * 1997-04-22 2002-05-07 Silicon Laboratories, Inc. Direct digital access arrangement circuitry and method for connecting to phone lines
US6408034B1 (en) 1997-04-22 2002-06-18 Silicon Laboratories, Inc. Framed delta sigma data with unlikely delta sigma data patterns
US6144326A (en) 1997-04-22 2000-11-07 Silicon Laboratories, Inc. Digital isolation system with ADC offset calibration
US6498825B1 (en) * 1997-04-22 2002-12-24 Silicon Laboratories Inc. Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with programmable current limiting
US6516024B1 (en) 1997-04-22 2003-02-04 Silicon Laboratories Inc. Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with low distortion and current limiting
US6480602B1 (en) 1997-04-22 2002-11-12 Silicon Laboratories, Inc. Ring-detect interface circuitry and method for a communication system
US6289070B1 (en) 1997-04-22 2001-09-11 Silicon Laboratories, Inc. Digital isolation system with ADC offset calibration including coarse offset
US6359983B1 (en) 1997-04-22 2002-03-19 Silicon Laboratories, Inc. Digital isolation system with data scrambling
US6430229B1 (en) 1997-04-22 2002-08-06 Silicon Laboratories Inc. Capacitive isolation system with digital communication and power transfer
US6587560B1 (en) * 1997-04-22 2003-07-01 Silicon Laboratories Inc. Low voltage circuits powered by the phone line
US6298133B1 (en) 1997-04-22 2001-10-02 Silicon Laboratories, Inc. Telephone line interface architecture using ringer inputs for caller ID data
US6442271B1 (en) 1997-04-22 2002-08-27 Silicon Laboratories, Inc. Digital isolation system with low power mode
US6137827A (en) * 1997-04-22 2000-10-24 Silicon Laboratories, Inc. Isolation system with digital communication across a capacitive barrier
US6442213B1 (en) * 1997-04-22 2002-08-27 Silicon Laboratories Inc. Digital isolation system with hybrid circuit in ADC calibration loop
US6504864B1 (en) 1997-04-22 2003-01-07 Silicon Laboratories Inc. Digital access arrangement circuitry and method for connecting to phone lines having a second order DC holding circuit
US6307891B1 (en) 1997-04-22 2001-10-23 Silicon Laboratories, Inc. Method and apparatus for freezing a communication link during a disruptive event
US6198816B1 (en) * 1997-04-22 2001-03-06 Silicon Laboratories, Inc. Capacitively coupled ring detector with power provided across isolation barrier
US6389134B1 (en) 1997-04-22 2002-05-14 Silicon Laboratories, Inc. Call progress monitor circuitry and method for a communication system
US6167134A (en) 1997-04-22 2000-12-26 Silicon Laboratories, Inc. External resistor and method to minimize power dissipation in DC holding circuitry for a communication system
US5870046A (en) 1997-04-22 1999-02-09 Silicon Laboratories Inc. Analog isolation system with digital communication across a capacitive barrier
US6456712B1 (en) 1997-04-22 2002-09-24 Silicon Laboratories Inc. Separation of ring detection functions across isolation barrier for minimum power
US6463113B1 (en) * 1997-06-05 2002-10-08 Compaq Information Technologies Group, L.P. External signal attenuator for a single-ended transmission line
US5946394A (en) * 1997-06-12 1999-08-31 C. P. Clare Corporation Isolation amplifier with hook switch control
US6351533B1 (en) 1998-01-26 2002-02-26 Xircom, Inc. System and method for protecting devices connected to a telephone line
US6144733A (en) * 1998-01-28 2000-11-07 Globespan Semiconductor, Inc. Ring filter for pots communication system
US6757381B1 (en) * 1998-08-13 2004-06-29 Eugene Robert Worley Design of telephone line interface circuits using a two chip opto-coupler with LEDs integrated onto silicon chips
AU3098901A (en) * 2000-01-20 2001-07-31 Current Technologies, Llc Method of isolating data in a power line communication network
CA2406224A1 (en) * 2000-04-14 2001-10-25 Current Technologies, Llc Digital communications utilizing medium voltage power distribution lines
US6998962B2 (en) 2000-04-14 2006-02-14 Current Technologies, Llc Power line communication apparatus and method of using the same
US7103240B2 (en) * 2001-02-14 2006-09-05 Current Technologies, Llc Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line
US20020002040A1 (en) * 2000-04-19 2002-01-03 Kline Paul A. Method and apparatus for interfacing RF signals to medium voltage power lines
EP1371219A4 (en) * 2001-02-14 2006-06-21 Current Tech Llc Data communication over a power line
US6982611B2 (en) * 2002-06-24 2006-01-03 Current Technologies, Llc Power line coupling device and method of using the same
US20070121923A1 (en) * 2005-09-15 2007-05-31 Tyco Safety Products Canada, Ltd. Telephone line communication interface

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829619A (en) * 1972-12-29 1974-08-13 Stromberg Carlson Corp Telephone ring trip circuit
US3941939A (en) * 1974-11-25 1976-03-02 International Telephone And Telegraph Corporation Electronic ring trip circuit
US4056719A (en) * 1975-02-10 1977-11-01 Bell Telephone Laboratories, Incorporated Two-way telephone transmission system utilizing opto-couplers
US4101741A (en) * 1977-03-14 1978-07-18 International Standard Electric Corporation Line circuit for key telephone systems
US4203006A (en) * 1978-04-20 1980-05-13 Prentice Corporation Direct access coupler
JPS5586253A (en) 1978-12-23 1980-06-28 Toshiba Corp Antiside tone circuit
US4282604A (en) * 1979-04-04 1981-08-04 Jefferson William T Optical isolation circuit for bidirectional communication lines
DE2933847C2 (en) * 1979-08-21 1981-12-03 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for receiving direct current signals in teleprinter and data transmission systems
US4417099A (en) * 1980-11-03 1983-11-22 Universal Data Systems, Inc. Electro-optical isolator circuit for line powered modem
US4436960A (en) * 1982-01-11 1984-03-13 Bell Telephone Laboratories, Incorporated Telephone ringing signal generator
US4558183A (en) * 1983-10-03 1985-12-10 Cellutron Corporation Opto-coupler interfacing circuit
JPS6130847A (en) 1984-07-24 1986-02-13 Ricoh Co Ltd Coupling circuit of network control unit
US4727535A (en) * 1985-04-08 1988-02-23 Rapitech System Inc. Telephone network coupler
US4723267A (en) * 1985-06-17 1988-02-02 Octocom Systems, Inc. Telephone line interface and dialer circuitry for telecommunications equipment
US4803719A (en) * 1987-06-04 1989-02-07 Ulrich Thomas J Method for powering telephone apparatus and telephone apparatus powered directly from the telephone line without external power
US5233649A (en) * 1990-08-30 1993-08-03 Guerra Jr Roy H Telephone ringing module
US5291545A (en) 1990-10-02 1994-03-01 Intertex Data Ab Apparatus and method for determining the state of a telephone line
US5140631A (en) * 1990-10-02 1992-08-18 Intertex Data Ab Apparatus and method for determining the state of a telephone line
WO1994003990A1 (en) 1992-08-07 1994-02-17 Pascom Technologies Pty. Ltd. Isolation interface apparatus
GB9219112D0 (en) 1992-09-09 1992-10-21 Roberts Michael J Completely automatic telecommunicator
AU4856493A (en) 1992-09-14 1994-04-12 Uzoma Ulugbo Agbaje-Anozie Telephone line interface
DE19503164A1 (en) * 1994-02-04 1995-08-10 Siemens Comp Inc Optically coupled data switching system and handset cradle switch
US5751803A (en) 1995-11-08 1998-05-12 Shmuel Hershkovit Telephone line coupler
CA2196014C (en) 1997-01-27 2001-05-08 Reinhart Karl Pildner Size discriminating dual element pir detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE42590E1 (en) 1995-11-08 2011-08-02 Pinhas Shpater Telephone line coupler

Also Published As

Publication number Publication date
USRE39406E1 (en) 2006-11-21
US5751803A (en) 1998-05-12
CA2273148C (en) 2002-06-25
USRE42590E1 (en) 2011-08-02
CA2169670C (en) 1999-10-05
CA2169670A1 (en) 1997-05-09

Similar Documents

Publication Publication Date Title
CA2273148A1 (en) Telephone line coupler
CA2119751A1 (en) Solid State Isolation Device Using Opto-Isolators
AU555117B2 (en) Telephone line interface circuit
EP0228250A3 (en) Coupling discriminator
EP0293135A3 (en) Cable adapter including a switch
NO945099D0 (en) Connection channel switching and circuitry
EP0379202A3 (en) Phase inverter and push-pull amplifier using the same
EP0185876A3 (en) An fet switch for high frequency signals
IE801097L (en) Telecommunications line circuit
WO1992004794A3 (en) Alarm and test system for a digital main line
JPS54155706A (en) Mixer circuit
JPS55109019A (en) Pin diode switch circuit
DE2960124D1 (en) Circuit arrangement for the ungrounded transmission of signals across points of isolation in communication systems
AU5228586A (en) Second order all pass network
JPS60107901A (en) Microwave monitor circuit
JPS57160258A (en) Circuit switching device
ES8608205A1 (en) Coupling stage for coupling a signal-processing device to a transmission line.
EP0184644A3 (en) Transformer coupled, solid state communication line switch
JPS6451752A (en) Facsimile equipment
JPS6468196A (en) Trunk line interface circuit
JPS6455953A (en) System for detecting facsimile call signal
CA2338195A1 (en) Video conferencing interface
JPS6486649A (en) Switching system for speech circuit and speaker reception circuit in telephone set having on-hook dial function
JPS55161455A (en) Voice mixing unit for service
JPH02195765A (en) In-band signal device

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20140218