GB1250494A - - Google Patents

Info

Publication number
GB1250494A
GB1250494A GB1250494DA GB1250494A GB 1250494 A GB1250494 A GB 1250494A GB 1250494D A GB1250494D A GB 1250494DA GB 1250494 A GB1250494 A GB 1250494A
Authority
GB
United Kingdom
Prior art keywords
level
july
reached
direction until
limiting
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
Other languages
English (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
Publication of GB1250494A publication Critical patent/GB1250494A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H04L25/05—Electric or magnetic storage of signals before transmitting or retransmitting for changing the transmission rate
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Dc Digital Transmission (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Facsimile Heads (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Transmission Control (AREA)
GB1250494D 1967-07-27 1968-07-26 Expired GB1250494A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65649667A 1967-07-27 1967-07-27

Publications (1)

Publication Number Publication Date
GB1250494A true GB1250494A (fr) 1971-10-20

Family

ID=24633274

Family Applications (3)

Application Number Title Priority Date Filing Date
GB1250492D Expired GB1250492A (fr) 1967-07-27 1968-07-26
GB1250494D Expired GB1250494A (fr) 1967-07-27 1968-07-26
GB1250493D Expired GB1250493A (fr) 1967-07-27 1968-07-26

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1250492D Expired GB1250492A (fr) 1967-07-27 1968-07-26

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1250493D Expired GB1250493A (fr) 1967-07-27 1968-07-26

Country Status (3)

Country Link
DE (1) DE1762644B2 (fr)
FR (1) FR1579145A (fr)
GB (3) GB1250492A (fr)

Cited By (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.

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE789644A (fr) * 1971-10-13 1973-04-04 Cit Alcatel Codeur a vitesse de transmission accrue
SE7813424L (sv) * 1978-01-20 1979-07-21 Hitachi Ltd Metod och apparatutrustning for datakommunikation
DE2823383C3 (de) * 1978-05-29 1981-07-30 Siemens AG, 1000 Berlin und 8000 München Erzeugung 2↑n↑-stufiger Signale aus n binären Signalen sehr hoher Bitrate

Cited By (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.

Also Published As

Publication number Publication date
GB1250492A (fr) 1971-10-20
DE1762644A1 (de) 1970-07-02
GB1250493A (fr) 1971-10-20
DE1762644B2 (de) 1971-03-18
FR1579145A (fr) 1969-08-22

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees