FR2331222B1 - - Google Patents

Info

Publication number
FR2331222B1
FR2331222B1 FR7531587A FR7531587A FR2331222B1 FR 2331222 B1 FR2331222 B1 FR 2331222B1 FR 7531587 A FR7531587 A FR 7531587A FR 7531587 A FR7531587 A FR 7531587A FR 2331222 B1 FR2331222 B1 FR 2331222B1
Authority
FR
France
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
Application number
FR7531587A
Other versions
FR2331222A1 (fr
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.)
Nortel Networks Ltd
Original Assignee
Northern Electric Co Ltd
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 Northern Electric Co Ltd filed Critical Northern Electric Co Ltd
Publication of FR2331222A1 publication Critical patent/FR2331222A1/fr
Application granted granted Critical
Publication of FR2331222B1 publication Critical patent/FR2331222B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
    • H04M9/003—Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set, e.g. keyboard or display equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4904—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using self-synchronising codes, e.g. split-phase codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Dc Digital Transmission (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
FR7531587A 1974-10-16 1975-10-15 Dispositif de transmission de donnees bidirectionnel bifilaire Granted FR2331222A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA211,515A CA996691A (en) 1974-10-16 1974-10-16 Tow wire, full duplex data transmission system

Publications (2)

Publication Number Publication Date
FR2331222A1 FR2331222A1 (fr) 1977-06-03
FR2331222B1 true FR2331222B1 (fr) 1981-10-09

Family

ID=4101371

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7531587A Granted FR2331222A1 (fr) 1974-10-16 1975-10-15 Dispositif de transmission de donnees bidirectionnel bifilaire

Country Status (8)

Country Link
JP (1) JPS5172201A (fr)
CA (1) CA996691A (fr)
DE (1) DE2546422C2 (fr)
FR (1) FR2331222A1 (fr)
GB (1) GB1522682A (fr)
IT (1) IT1043321B (fr)
NL (1) NL180799C (fr)
SE (1) SE402510B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5474602A (en) * 1977-11-28 1979-06-14 Hitachi Ltd Photo delivery unit of synchronous type
JPS5814104B2 (ja) * 1978-04-28 1983-03-17 株式会社東芝 情報伝送方式
US4287596A (en) * 1979-11-26 1981-09-01 Ncr Corporation Data recovery system for use with a high speed serial link between two subsystems in a data processing system
DE3261985D1 (en) * 1981-02-27 1985-03-07 Bbc Brown Boveri & Cie Arrangement for decoding a biphase coded signal, as well as utilisation of the arrangement
JPS58151154A (ja) * 1982-03-03 1983-09-08 Hitachi Ltd 装置間伝送方式
US4584719A (en) * 1984-08-24 1986-04-22 System Development Corp. Fiber optic workstation datalink interface
CN115314071B (zh) * 2022-08-12 2024-08-06 程艳 一种全双工双向模拟前端混合收发器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1216759A (en) * 1968-05-23 1970-12-23 Standard Telephones Cables Ltd Subscriber subset for p.c.m. telephone system
GB1182363A (en) * 1968-07-26 1970-02-25 Standard Telephones Cables Ltd Subscriber Subset for PCM Telephone System
GB1229149A (fr) * 1969-07-28 1971-04-21
US3637939A (en) * 1970-05-07 1972-01-25 Bell Telephone Labor Inc Line status control for electronic key telephone system

Also Published As

Publication number Publication date
CA996691A (en) 1976-09-07
NL180799C (nl) 1987-04-16
FR2331222A1 (fr) 1977-06-03
SE402510B (sv) 1978-07-03
IT1043321B (it) 1980-02-20
GB1522682A (en) 1978-08-23
DE2546422C2 (de) 1986-12-18
JPS5172201A (en) 1976-06-22
NL180799B (nl) 1986-11-17
NL7511655A (nl) 1976-04-21
SE7511637L (sv) 1976-04-20
DE2546422A1 (de) 1976-04-22

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse