GB9504458D0 - Communication device connected to an interface circuit employing opto-isolators - Google Patents

Communication device connected to an interface circuit employing opto-isolators

Info

Publication number
GB9504458D0
GB9504458D0 GBGB9504458.2A GB9504458A GB9504458D0 GB 9504458 D0 GB9504458 D0 GB 9504458D0 GB 9504458 A GB9504458 A GB 9504458A GB 9504458 D0 GB9504458 D0 GB 9504458D0
Authority
GB
United Kingdom
Prior art keywords
isolators
communication device
interface circuit
device connected
circuit employing
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
GBGB9504458.2A
Other versions
GB2285899A (en
GB2285899B (en
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
Application filed by Individual filed Critical Individual
Publication of GB9504458D0 publication Critical patent/GB9504458D0/en
Publication of GB2285899A publication Critical patent/GB2285899A/en
Application granted granted Critical
Publication of GB2285899B publication Critical patent/GB2285899B/en
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
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/587—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using opto-couplers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Facsimiles In General (AREA)
  • Telephonic Communication Services (AREA)
  • Dc Digital Transmission (AREA)
  • Computer And Data Communications (AREA)
  • Communication Control (AREA)
GB9504458A 1992-09-09 1993-09-09 Communication device connected to an interface circuit employing opto-isolators Expired - Fee Related GB2285899B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB929219112A GB9219112D0 (en) 1992-09-09 1992-09-09 Completely automatic telecommunicator
PCT/AU1993/000463 WO1994006215A1 (en) 1992-09-09 1993-09-09 Communication device connected to an interface circuit employing opto-isolators

Publications (3)

Publication Number Publication Date
GB9504458D0 true GB9504458D0 (en) 1995-04-26
GB2285899A GB2285899A (en) 1995-07-26
GB2285899B GB2285899B (en) 1996-03-27

Family

ID=10721664

Family Applications (2)

Application Number Title Priority Date Filing Date
GB929219112A Pending GB9219112D0 (en) 1992-09-09 1992-09-09 Completely automatic telecommunicator
GB9504458A Expired - Fee Related GB2285899B (en) 1992-09-09 1993-09-09 Communication device connected to an interface circuit employing opto-isolators

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB929219112A Pending GB9219112D0 (en) 1992-09-09 1992-09-09 Completely automatic telecommunicator

Country Status (3)

Country Link
AU (1) AU671667B2 (en)
GB (2) GB9219112D0 (en)
WO (1) WO1994006215A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5751803A (en) 1995-11-08 1998-05-12 Shmuel Hershkovit Telephone line coupler
US5946393A (en) * 1997-02-10 1999-08-31 Integration Associates, Inc. Data access arrangement
US6463543B1 (en) 1999-08-03 2002-10-08 Btech, Inc. Serial bus communications system
US6788782B1 (en) 2000-01-20 2004-09-07 3Com Corporation Method and apparatus for switching between multiple communication lines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987257A (en) * 1975-05-29 1976-10-19 International Telephone And Telegraph Corporation Optically coupled two-wire to four-wire hybrid lines
CH599731A5 (en) * 1976-03-02 1978-05-31 Ibm
US4101741A (en) * 1977-03-14 1978-07-18 International Standard Electric Corporation Line circuit for key telephone systems
US4142075A (en) * 1977-10-11 1979-02-27 Burr-Brown Research Corporation Interface circuit and method for telephone extension lines
SE430197B (en) * 1982-02-09 1983-10-24 Ellemtel Utvecklings Ab ELECTRONIC EXTERNAL LINE TRANSFER

Also Published As

Publication number Publication date
GB2285899A (en) 1995-07-26
AU4809593A (en) 1994-03-29
AU671667B2 (en) 1996-09-05
GB9219112D0 (en) 1992-10-21
GB2285899B (en) 1996-03-27
WO1994006215A1 (en) 1994-03-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970909