JPS57138269A - Facsimile communication system - Google Patents

Facsimile communication system

Info

Publication number
JPS57138269A
JPS57138269A JP56023351A JP2335181A JPS57138269A JP S57138269 A JPS57138269 A JP S57138269A JP 56023351 A JP56023351 A JP 56023351A JP 2335181 A JP2335181 A JP 2335181A JP S57138269 A JPS57138269 A JP S57138269A
Authority
JP
Japan
Prior art keywords
speed modem
error
frame
transmission
modem part
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.)
Pending
Application number
JP56023351A
Other languages
Japanese (ja)
Inventor
Mitsushi Matsumoto
Hirochika Kataoka
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP56023351A priority Critical patent/JPS57138269A/en
Publication of JPS57138269A publication Critical patent/JPS57138269A/en
Pending 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
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32609—Fault detection or counter-measures, e.g. original mis-positioned, shortage of paper
    • H04N1/32614—Fault detection or counter-measures, e.g. original mis-positioned, shortage of paper related to a single-mode communication, e.g. at the transmitter or at the receiver
    • H04N1/32619—Fault detection or counter-measures, e.g. original mis-positioned, shortage of paper related to a single-mode communication, e.g. at the transmitter or at the receiver with retransmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Storing Facsimile Image Data (AREA)
  • Facsimile Transmission Control (AREA)

Abstract

PURPOSE:To resend an accurate image signal efficiently when the image signal has an error in transmission, by dividing transmission line bands for the output signal of a transmitter and an answer signal from a receiver. CONSTITUTION:A fame generated by a frame generation part 2 is modulated successively by a high-speed modem part 3 and applied to a high-speed modem part 8 on a reception side through hydrid circuits 6 and 7. A frame check part 9 checks whether the received frame has an error or not and when the error is detected, a reception and transmission control part 11 generates and applies an answer signal, containing a frame number, to a low-speed modem part 12, so that it is further applied to a low-speed modem part 5 on a transmission side through the hybrid circuits 7 and 6. Consequently, a transmission control part 4 reads frames, following the error-detected frame stored in the frame generation part 2, out of the memory successively to resend them through the high-speed modem part 3.
JP56023351A 1981-02-19 1981-02-19 Facsimile communication system Pending JPS57138269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56023351A JPS57138269A (en) 1981-02-19 1981-02-19 Facsimile communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56023351A JPS57138269A (en) 1981-02-19 1981-02-19 Facsimile communication system

Publications (1)

Publication Number Publication Date
JPS57138269A true JPS57138269A (en) 1982-08-26

Family

ID=12108156

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56023351A Pending JPS57138269A (en) 1981-02-19 1981-02-19 Facsimile communication system

Country Status (1)

Country Link
JP (1) JPS57138269A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0193410A2 (en) * 1985-02-28 1986-09-03 Canon Kabushiki Kaisha Data communication apparatus
JPS61198865A (en) * 1985-02-28 1986-09-03 Canon Inc Picture image communication equipment
EP0208852A2 (en) * 1985-04-30 1987-01-21 Canon Kabushiki Kaisha Communication terminal device
FR2646038A1 (en) * 1989-04-13 1990-10-19 Sagem Videotex terminal capable of receiving faxes
FR2650139A2 (en) * 1989-04-13 1991-01-25 Sagem VIDEOTEX TERMINAL THAT CAN RECEIVE FAXES
EP0554872A1 (en) * 1992-02-05 1993-08-11 Konica Corporation Facsimile apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0193410A2 (en) * 1985-02-28 1986-09-03 Canon Kabushiki Kaisha Data communication apparatus
JPS61198865A (en) * 1985-02-28 1986-09-03 Canon Inc Picture image communication equipment
US4829524A (en) * 1985-02-28 1989-05-09 Canon Kabushiki Kaisha Data communication apparatus
EP0208852A2 (en) * 1985-04-30 1987-01-21 Canon Kabushiki Kaisha Communication terminal device
FR2646038A1 (en) * 1989-04-13 1990-10-19 Sagem Videotex terminal capable of receiving faxes
FR2650139A2 (en) * 1989-04-13 1991-01-25 Sagem VIDEOTEX TERMINAL THAT CAN RECEIVE FAXES
EP0554872A1 (en) * 1992-02-05 1993-08-11 Konica Corporation Facsimile apparatus
US5353125A (en) * 1992-02-05 1994-10-04 Konica Corporation Facsimile apparatus

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