GB1342555A - Facsimile signal system - Google Patents

Facsimile signal system

Info

Publication number
GB1342555A
GB1342555A GB1342555DA GB1342555A GB 1342555 A GB1342555 A GB 1342555A GB 1342555D A GB1342555D A GB 1342555DA GB 1342555 A GB1342555 A GB 1342555A
Authority
GB
United Kingdom
Prior art keywords
level
pulse
pulses
transistor
mark
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)
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.)
VICTOR GRAPHIC SYSTEMS Inc
Original Assignee
VICTOR GRAPHIC SYSTEMS Inc
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 VICTOR GRAPHIC SYSTEMS Inc filed Critical VICTOR GRAPHIC SYSTEMS Inc
Publication of GB1342555A publication Critical patent/GB1342555A/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
    • 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
    • H04N1/40—Picture signal circuits
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • 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)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Facsimile Transmission Control (AREA)
GB1342555D 1972-03-10 1972-03-10 Facsimile signal system Expired GB1342555A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1135972 1972-03-10

Publications (1)

Publication Number Publication Date
GB1342555A true GB1342555A (en) 1974-01-03

Family

ID=9984801

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1342555D Expired GB1342555A (en) 1972-03-10 1972-03-10 Facsimile signal system

Country Status (3)

Country Link
DE (1) DE2213606A1 (enExample)
FR (1) FR2175674B3 (enExample)
GB (1) GB1342555A (enExample)

Also Published As

Publication number Publication date
DE2213606A1 (de) 1973-09-27
FR2175674B3 (enExample) 1975-04-25
FR2175674A1 (enExample) 1973-10-26

Similar Documents

Publication Publication Date Title
US3187260A (en) Circuit employing capacitor charging and discharging through transmission line providing opposite-polarity pulses for triggering bistable means
US2698427A (en) Magnetic memory channel recirculating system
GB1451025A (en) Circuit for measuring a phase difference between two signals
GB1074514A (en) Improvements in or relating to telegraph receiving apparatus
GB1368583A (en) Ramp generator circuit
GB1317970A (en) Frequency shift data transmission system
GB1298179A (en) Transmission system
GB1342555A (en) Facsimile signal system
GB1146728A (en) Improvements in and relating to binary information transmission systems
US3337862A (en) Electrical signalling systems
GB1499127A (en) Circuit for detecting the logic state changes of a digital waveform
GB1437565A (en) Wide dynamic range logarithmic amplifier arrangement
GB1522703A (en) Automatic level-shifting circuit
KR880005760A (ko) Pll 회로용 위상 변별기
ES313152A1 (es) Un sistema de comunicacion aplicable particularmente a satelites y a otros semejantes.
GB1392819A (en) Audio signal level-indicating devices
GB1299530A (en) Decoding circuit
US4598412A (en) Binary digital data signal reproducing circuit in digital data transmission system
GB1412156A (en) Pulse amplitude-modulated signal transmission systems
GB923955A (en) Improvements in or relating to digital information transfer systems
US2490801A (en) Electrical pulse time modulation circuit
GB1289584A (enExample)
US1914898A (en) Method of transmitting telegrams and pictures on short waves
GB1179309A (en) Electrographic Recorder Employing an Array of Writing Electrodes.
GB1379559A (en) Modulation circuits

Legal Events

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