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NL121716C - - Google Patents

Info

Publication number
NL121716C
NL121716C NL263171A NL263171A NL121716C NL 121716 C NL121716 C NL 121716C NL 263171 A NL263171 A NL 263171A NL 263171 A NL263171 A NL 263171A NL 121716 C NL121716 C NL 121716C
Authority
NL
Netherlands
Prior art keywords
elements
unit code
april
character signal
triggers
Prior art date
Application number
NL263171A
Other versions
NL263171A (en
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 filed Critical
Priority to NL263171A priority Critical patent/NL121716C/xx
Priority to CH310962A priority patent/CH394282A/en
Priority to DE1962ST018979 priority patent/DE1206947B/en
Priority to BE615464A priority patent/BE615464A/en
Priority to FR892064A priority patent/FR1319527A/en
Priority to GB1294062A priority patent/GB929336A/en
Publication of NL263171A publication Critical patent/NL263171A/xx
Application granted granted Critical
Publication of NL121716C publication Critical patent/NL121716C/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M5/00—Conversion of the form of the representation of individual digits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/47—Error detection, forward error correction or error protection, not provided for in groups H03M13/01 - H03M13/37
    • H03M13/51—Constant weight codes; n-out-of-m codes; Berger codes
    • 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
    • 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
    • H04L25/4906—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 binary codes
    • 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
    • H04L25/4906—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 binary codes
    • H04L25/4908—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 binary codes using mBnB codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Probability & Statistics with Applications (AREA)
  • Television Systems (AREA)
  • Dc Digital Transmission (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Abstract

929,336. Error detecting telegraph systems. DE STAAT DER NEDERLANDEN, TEN DEZE VERTEGENWOORDIGD DOOR DE DIRECTEUR-GENERAAL DER POSTERIJEN, TELEGRAFIE EN TELEFONIE. April 4, 1962 [April 4, 1961], No. 12940/62. Drawings to Specification. Class 40 (3). The invention provides a means for translating a 5-unit code to an 8-unit code, the 8-unit code being such that no character signal contains more than three consecutive elements having the same polarity and so that there can be no more than three consecutive elements of similar polarity in any sequence of elements. In the embodiment described, a tape transmitter feeds 5-unit signals to set five trigger circuits. Three further triggers are provided, these being set in accordance with the above requirements by means of a number of diode gates which are fed by the first five triggers. There is an additional feature that each character signal has four mark and four space elements, additional gates are necessary to ensure this. Specification 774,509 is referred to.
NL263171A 1961-04-04 1961-04-04 NL121716C (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL263171A NL121716C (en) 1961-04-04 1961-04-04
CH310962A CH394282A (en) 1961-04-04 1962-03-15 Alternating current telegraphing process
DE1962ST018979 DE1206947B (en) 1961-04-04 1962-03-17 Structure of a figure-eight code for alternating current telegraphing processes, in which all characters have four character and four separating steps
BE615464A BE615464A (en) 1961-04-04 1962-03-23 Alternating current telegraph system using a limited frequency band
FR892064A FR1319527A (en) 1961-04-04 1962-03-23 Alternating current telegraph system using a limited frequency band
GB1294062A GB929336A (en) 1961-04-04 1962-04-04 A.c. telegraph system using a limited frequency band

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL263171A NL121716C (en) 1961-04-04 1961-04-04

Publications (2)

Publication Number Publication Date
NL263171A NL263171A (en) 1964-05-25
NL121716C true NL121716C (en) 1967-02-08

Family

ID=19752961

Family Applications (1)

Application Number Title Priority Date Filing Date
NL263171A NL121716C (en) 1961-04-04 1961-04-04

Country Status (6)

Country Link
BE (1) BE615464A (en)
CH (1) CH394282A (en)
DE (1) DE1206947B (en)
FR (1) FR1319527A (en)
GB (1) GB929336A (en)
NL (1) NL121716C (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3713123A (en) * 1969-12-18 1973-01-23 Gen Electric High density data recording and error tolerant data reproducing system
FR2469839A1 (en) * 1979-11-14 1981-05-22 Brossard Pierre ENCODER-DECODER FOR DIGITAL TRANSMISSION CHANNELS
GB8915137D0 (en) * 1989-06-30 1989-08-23 Inmos Ltd Message routing
US5422881A (en) * 1989-06-30 1995-06-06 Inmos Limited Message encoding
GB9312136D0 (en) * 1993-06-11 1993-07-28 Inmos Ltd Transmission of messages
GB9312071D0 (en) * 1993-06-11 1993-07-28 Inmos Ltd Encoding scheme
EP0629067B1 (en) * 1993-06-11 2003-01-22 STMicroelectronics Limited 4B6B Coding

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL250403A (en) * 1959-04-15

Also Published As

Publication number Publication date
FR1319527A (en) 1963-03-01
CH394282A (en) 1965-06-30
DE1206947B (en) 1965-12-16
NL263171A (en) 1964-05-25
BE615464A (en) 1962-07-16
GB929336A (en) 1963-06-19

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