ES463650A1 - Digital signal transmission systems and to alphabet code converters for such systems - Google Patents

Digital signal transmission systems and to alphabet code converters for such systems

Info

Publication number
ES463650A1
ES463650A1 ES463650A ES463650A ES463650A1 ES 463650 A1 ES463650 A1 ES 463650A1 ES 463650 A ES463650 A ES 463650A ES 463650 A ES463650 A ES 463650A ES 463650 A1 ES463650 A1 ES 463650A1
Authority
ES
Spain
Prior art keywords
systems
signals
alphabet code
acw1
digital signal
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
Application number
ES463650A
Other languages
Spanish (es)
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of ES463650A1 publication Critical patent/ES463650A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04L25/4917—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 multilevel codes
    • H04L25/4923—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 multilevel codes using ternary codes
    • H04L25/4925—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 multilevel codes using ternary codes using balanced bipolar ternary codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electromagnetism (AREA)
  • Dc Digital Transmission (AREA)
  • Small-Scale Networks (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Optical Communication System (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

An alphabet code converter (ACW1) arranged at the transmitting end of the digital transmission system generates output signals in accordance with the code alphabets provided, which signals only have a certain maximum number of equal-valued elements, for example zero bits. For the purpose of no-address fault location, control signals are provided which cannot occur during normal operation and which have a relatively large number of identical code elements following one another directly. For this reason, an alphabet code converter (ACW1) is proposed which can be switched (S1) during the fault locating operation and which generates a ternary loop closure signal from a binary loop closure signal. The system can be used for digital transmission links, particularly for PCM signals, having a relatively large number of regenerative repeater stations.
ES463650A 1976-10-28 1977-10-28 Digital signal transmission systems and to alphabet code converters for such systems Expired ES463650A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2649161A DE2649161C3 (en) 1976-10-28 1976-10-28 Digital transmission system with an alphabet code converter

Publications (1)

Publication Number Publication Date
ES463650A1 true ES463650A1 (en) 1979-01-01

Family

ID=5991783

Family Applications (1)

Application Number Title Priority Date Filing Date
ES463650A Expired ES463650A1 (en) 1976-10-28 1977-10-28 Digital signal transmission systems and to alphabet code converters for such systems

Country Status (16)

Country Link
AT (1) AT355098B (en)
AU (1) AU506477B2 (en)
BE (1) BE860285A (en)
BR (1) BR7707157A (en)
CH (1) CH627556A5 (en)
DE (1) DE2649161C3 (en)
DK (1) DK154250C (en)
ES (1) ES463650A1 (en)
FR (1) FR2369748A1 (en)
GB (1) GB1543135A (en)
IT (1) IT1086933B (en)
MX (1) MX144035A (en)
NL (1) NL174318C (en)
NO (1) NO145289C (en)
SE (1) SE414441B (en)
YU (1) YU258177A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2902020C3 (en) * 1979-01-19 1982-08-26 TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Method and circuit arrangement for the transmission of fault location commands in digital transmission systems
FR2557404B1 (en) * 1983-12-23 1986-10-17 Wilbrod Jean Hubert METHOD FOR TRANSMITTING LOW-RATE INFORMATION OVER DIGITAL LINK IN SERVICE AND COMMUNICATION FACILITY COMPRISING APPLICATION
GB2183971B (en) * 1985-12-05 1989-10-04 Stc Plc Data transmission system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2060989A5 (en) * 1969-12-24 1971-06-18 Sits Soc It Telecom Siemens

Also Published As

Publication number Publication date
AT355098B (en) 1980-02-11
NO145289B (en) 1981-11-09
GB1543135A (en) 1979-03-28
BR7707157A (en) 1978-07-18
ATA694477A (en) 1979-07-15
DK154250C (en) 1989-03-28
DE2649161A1 (en) 1978-05-03
NL174318C (en) 1984-05-16
DK477677A (en) 1978-04-29
AU3010877A (en) 1979-05-03
DE2649161B2 (en) 1979-01-04
CH627556A5 (en) 1982-01-15
AU506477B2 (en) 1980-01-03
BE860285A (en) 1978-02-15
NO145289C (en) 1982-02-17
IT1086933B (en) 1985-05-31
NL174318B (en) 1983-12-16
NO773619L (en) 1978-05-02
MX144035A (en) 1981-08-19
FR2369748B1 (en) 1982-03-26
SE414441B (en) 1980-07-28
NL7711914A (en) 1978-05-03
FR2369748A1 (en) 1978-05-26
DE2649161C3 (en) 1979-09-06
SE7711943L (en) 1978-04-29
DK154250B (en) 1988-10-24
YU258177A (en) 1982-06-30

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