GB1181082A - Improvements in or relating to Facsimile Transmission Systems - Google Patents

Improvements in or relating to Facsimile Transmission Systems

Info

Publication number
GB1181082A
GB1181082A GB43527/69A GB4352769A GB1181082A GB 1181082 A GB1181082 A GB 1181082A GB 43527/69 A GB43527/69 A GB 43527/69A GB 4352769 A GB4352769 A GB 4352769A GB 1181082 A GB1181082 A GB 1181082A
Authority
GB
United Kingdom
Prior art keywords
facsimile transmission
relating
frequency
transmission systems
march
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
GB43527/69A
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.)
Philips North America LLC
Original Assignee
Magnavox Co
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 Magnavox Co filed Critical Magnavox Co
Publication of GB1181082A publication Critical patent/GB1181082A/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
    • H04N1/00095—Systems or arrangements for the transmission of the picture signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/04—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by counting or integrating cycles of oscillations
    • 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
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
    • H04N1/4056—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern the pattern varying in one dimension only, e.g. dash length, pulse width modulation [PWM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Facsimiles In General (AREA)
  • Networks Using Active Elements (AREA)
  • Electronic Switches (AREA)
  • Facsimile Image Signal Circuits (AREA)
GB43527/69A 1966-03-18 1967-03-03 Improvements in or relating to Facsimile Transmission Systems Expired GB1181082A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US53544266A 1966-03-18 1966-03-18

Publications (1)

Publication Number Publication Date
GB1181082A true GB1181082A (en) 1970-02-11

Family

ID=24134247

Family Applications (2)

Application Number Title Priority Date Filing Date
GB00151/67A Expired GB1181081A (en) 1966-03-18 1967-03-03 Improved FM Demodulator System
GB43527/69A Expired GB1181082A (en) 1966-03-18 1967-03-03 Improvements in or relating to Facsimile Transmission Systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB00151/67A Expired GB1181081A (en) 1966-03-18 1967-03-03 Improved FM Demodulator System

Country Status (11)

Country Link
US (1) US3467772A (enExample)
BE (1) BE694935A (enExample)
BR (1) BR6787833D0 (enExample)
CH (1) CH481528A (enExample)
DE (1) DE1298541B (enExample)
ES (1) ES337199A1 (enExample)
FR (1) FR1513951A (enExample)
GB (2) GB1181081A (enExample)
NL (1) NL6703809A (enExample)
NO (1) NO121618B (enExample)
SE (1) SE355459B (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974337A (en) * 1967-10-24 1976-08-10 Matsushita Electric Industrial Co., Ltd. FM television telephone system
US3859459A (en) * 1973-02-16 1975-01-07 Exxon Research Engineering Co FM demodulator circuit for a facsimile system
US3911207A (en) * 1973-11-21 1975-10-07 Exxon Research Engineering Co FM demodulator and control circuitry for a facsimile system
US4000365A (en) * 1974-01-30 1976-12-28 Exxon Research And Engineering Company Apparatus for detecting a poor facsimile transmission
US3916098A (en) * 1974-02-07 1975-10-28 Exxon Research Engineering Co Facsimile receiver with improved demodulator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296539A (en) * 1964-03-02 1967-01-03 Ampex Pulse-counter demodulator

Also Published As

Publication number Publication date
ES337199A1 (es) 1968-04-01
BE694935A (enExample) 1967-08-14
SE355459B (enExample) 1973-04-16
US3467772A (en) 1969-09-16
NO121618B (enExample) 1971-03-22
NL6703809A (enExample) 1967-09-19
DE1298541B (de) 1969-07-03
CH481528A (de) 1969-11-15
FR1513951A (fr) 1968-02-16
GB1181081A (en) 1970-02-11
BR6787833D0 (pt) 1973-12-27

Similar Documents

Publication Publication Date Title
GB1079928A (en) A data transmission system
GB1178028A (en) Telegraph Signalling System
GB1090098A (en) Time-bandwidth reduction system
ES344425A1 (es) Una disposicion de transmitir senales de informacion en unabanda de frecuencias prescrita.
DK117435B (da) Radiooverføringsanlæg og sender modtager til overføring af i et sådant anlæg benyttede stereofoniske signaler.
GB1036316A (en) Improvements in or relating to data transmission systems
GB1017322A (en) Improvements in and relating to pulse signal transmission and receiving systems
GB1031697A (en) Improvements in or relating to receivers for binary coded frequency shift-keyed signals
GB1181082A (en) Improvements in or relating to Facsimile Transmission Systems
GB1402176A (en) Computer interface coding and decoding apparatus
ES399340A1 (es) Perfeccionamientos introducidos en sistemas de propagacion de senales.
ES363941A2 (es) Una disposicion para transmitir senales de informacion en una banda de frecuencias prescrita.
GB1431297A (en) Facsimile communication system
GB1266436A (enExample)
ES313152A1 (es) Un sistema de comunicacion aplicable particularmente a satelites y a otros semejantes.
GB1300330A (en) Digital pulse identification system
GB1071094A (en) Serial to diplex conversion system
GB1236510A (en) Improvements in or relating to signal receiving systems
GB1106217A (en) Signal transmission apparatus
GB1066909A (en) Improvements in or relating to electrical signalling systems
GB1153455A (en) Telecommunication Channel Control Arrangement
GB987389A (en) Data transmission of variable block lengths over half duplex networks
GB1353017A (en) Data-transmission systems
GB1366261A (en) Digital data transmission system
GB1050254A (enExample)