BE789644A - Codeur a vitesse de transmission accrue - Google Patents

Codeur a vitesse de transmission accrue

Info

Publication number
BE789644A
BE789644A BE789644DA BE789644A BE 789644 A BE789644 A BE 789644A BE 789644D A BE789644D A BE 789644DA BE 789644 A BE789644 A BE 789644A
Authority
BE
Belgium
Prior art keywords
encoder
transmission speed
increased transmission
increased
speed
Prior art date
Application number
Other languages
English (en)
Original Assignee
Cit Alcatel
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.)
Publication date
Publication of BE789644A publication Critical patent/BE789644A/fr

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03834—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using pulse shaping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
    • H04N1/4135—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which a baseband signal showing more than two values or a continuously varying baseband signal is transmitted or recorded

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Dc Digital Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
BE789644D 1971-10-13 Codeur a vitesse de transmission accrue BE789644A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7136797A FR2161744B1 (fr) 1971-10-13 1971-10-13

Publications (1)

Publication Number Publication Date
BE789644A true BE789644A (fr) 1973-04-04

Family

ID=9084310

Family Applications (1)

Application Number Title Priority Date Filing Date
BE789644D BE789644A (fr) 1971-10-13 Codeur a vitesse de transmission accrue

Country Status (9)

Country Link
BE (1) BE789644A (fr)
CA (1) CA971666A (fr)
DE (1) DE2249819C2 (fr)
FR (1) FR2161744B1 (fr)
GB (1) GB1357837A (fr)
IT (1) IT975237B (fr)
LU (1) LU66254A1 (fr)
NL (1) NL156288B (fr)
SE (1) SE387498B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2250898A (en) * 1990-12-12 1992-06-17 Stc Plc Line coding scheme.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3337863A (en) * 1964-01-17 1967-08-22 Automatic Elect Lab Polybinary techniques
US3459892A (en) * 1965-09-14 1969-08-05 Bendix Corp Digital data transmission system wherein a binary level is represented by a change in the amplitude of the transmitted signal
DE1762644B2 (de) * 1967-07-27 1971-03-18 Xerox Corp., Rochester, N.Y. (V.St.A,) Verfahren und schaltungsanordnungen zur umsetzung nicht synchroner binaerer datensignale in nichtsynchrone daten signale mit mehreren pegelwerten

Also Published As

Publication number Publication date
FR2161744A1 (fr) 1973-07-13
LU66254A1 (fr) 1973-04-13
DE2249819C2 (de) 1982-09-16
FR2161744B1 (fr) 1977-08-05
DE2249819A1 (de) 1973-04-19
NL156288B (nl) 1978-03-15
GB1357837A (en) 1974-06-26
NL7213636A (fr) 1973-04-17
IT975237B (it) 1974-07-20
CA971666A (en) 1975-07-22
SE387498B (sv) 1976-09-06

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: CIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT ALCAT

Effective date: 19841004