FR1577554A - - Google Patents

Info

Publication number
FR1577554A
FR1577554A FR1577554DA FR1577554A FR 1577554 A FR1577554 A FR 1577554A FR 1577554D A FR1577554D A FR 1577554DA FR 1577554 A FR1577554 A FR 1577554A
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
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
Priority claimed from JP43029396A external-priority patent/JPS4823681B1/ja
Application filed filed Critical
Application granted granted Critical
Publication of FR1577554A publication Critical patent/FR1577554A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • 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
    • H04B1/66—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 for reducing bandwidth of signals; for improving efficiency of transmission
    • 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
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/04—Channels characterised by the type of signal the signals being represented by different amplitudes or polarities, e.g. quadriplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
FR1577554D 1967-06-13 1968-07-02 Expired FR1577554A (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP3840467 1967-06-13
JP43029396A JPS4823681B1 (fr) 1968-04-30 1968-04-30
GB2242070 1968-06-12

Publications (1)

Publication Number Publication Date
FR1577554A true FR1577554A (fr) 1969-08-08

Family

ID=27258115

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1577554D Expired FR1577554A (fr) 1967-06-13 1968-07-02

Country Status (4)

Country Link
US (1) US3725592A (fr)
DE (1) DE1762423B2 (fr)
FR (1) FR1577554A (fr)
GB (1) GB1238658A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1117071B (it) * 1977-09-05 1986-02-10 Cselt Centro Studi Lab Telecom Dispositivo per trasmettere segnali multilivello su fibra ottica
US4414536A (en) * 1980-07-25 1983-11-08 Tokyo Shibaura Denki Kabushiki Kaisha Data compressing system
US4682248A (en) * 1983-04-19 1987-07-21 Compusonics Video Corporation Audio and video digital recording and playback system
US4755889A (en) * 1983-04-19 1988-07-05 Compusonics Video Corporation Audio and video digital recording and playback system
US5790599A (en) * 1989-01-19 1998-08-04 Redband Technologies, Inc. Data compression system using source representation
US5136618A (en) * 1989-01-19 1992-08-04 Redband Technologies, Inc. Method and apparatus for bandwidth reduction of modulated signals
DE19912379A1 (de) * 1999-03-19 2000-10-12 Alcatel Sa Verfahren und Schaltungsanordnung zur Konzentration von analogen Signalen zu einem digitalen Datenstrom in einem Breitbandübertragungssystem
JP2018121217A (ja) * 2017-01-25 2018-08-02 住友電気工業株式会社 光変調器駆動回路

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3144609A (en) * 1960-12-30 1964-08-11 Ibm Signal to noise enhancement technique for binary transmission
US3261920A (en) * 1961-12-01 1966-07-19 Bell Telephone Labor Inc Asynchronous pulse multiplexing
US3244808A (en) * 1962-01-12 1966-04-05 Massachusetts Inst Technology Pulse code modulation with few amplitude steps
US3337691A (en) * 1964-10-05 1967-08-22 Itt Multiplex digital communication system
GB1107360A (en) * 1964-12-07 1968-03-27 Solid State Electronics Pty Lt Electronic picture display system
US3372228A (en) * 1965-05-21 1968-03-05 Hughes Aircraft Co Television signal recorder

Also Published As

Publication number Publication date
DE1762423A1 (de) 1970-05-06
US3725592A (en) 1973-04-03
DE1762423B2 (de) 1972-12-07
GB1238658A (fr) 1971-07-07

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Legal Events

Date Code Title Description
ST Notification of lapse