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JPS5665564A - Facsimile transmission method - Google Patents

Facsimile transmission method

Info

Publication number
JPS5665564A
JPS5665564A JP14228079A JP14228079A JPS5665564A JP S5665564 A JPS5665564 A JP S5665564A JP 14228079 A JP14228079 A JP 14228079A JP 14228079 A JP14228079 A JP 14228079A JP S5665564 A JPS5665564 A JP S5665564A
Authority
JP
Japan
Prior art keywords
coding
transmitter
error
primary dimension
result
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
JP14228079A
Other languages
Japanese (ja)
Inventor
Mitsuru Kondo
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP14228079A priority Critical patent/JPS5665564A/en
Publication of JPS5665564A publication Critical patent/JPS5665564A/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
    • H04N1/41—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
    • H04N1/417—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Transmission Control (AREA)
  • Facsimiles In General (AREA)

Abstract

PURPOSE:To minimize the transfer of error, by automatically changing the insertion ratio of primary dimension coding against the coding of two dimension sequential processing, basing on the state of quality state of lines. CONSTITUTION:At a receiver 3, a check signal is reproduced and a threshold value is provided with the number of bits in error, the insertion ratio (K parameter value) of primary dimension coding is determined corresponding from the result and the result is transmitted to a transmitter 1. When a transmission control section 9 of the transmitter 1 receives the K parameter information, the K parameter value is indicated to a data compressor 6 via a line 24 for primary dimension coding.
JP14228079A 1979-11-02 1979-11-02 Facsimile transmission method Pending JPS5665564A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14228079A JPS5665564A (en) 1979-11-02 1979-11-02 Facsimile transmission method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14228079A JPS5665564A (en) 1979-11-02 1979-11-02 Facsimile transmission method

Publications (1)

Publication Number Publication Date
JPS5665564A true JPS5665564A (en) 1981-06-03

Family

ID=15311683

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14228079A Pending JPS5665564A (en) 1979-11-02 1979-11-02 Facsimile transmission method

Country Status (1)

Country Link
JP (1) JPS5665564A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5781780A (en) * 1980-11-11 1982-05-21 Nec Corp Facsimile communication system
JPS57210777A (en) * 1981-06-19 1982-12-24 Sanyo Electric Co Ltd Picture signal recording system for facsimile receiver
JPS60199267A (en) * 1984-03-23 1985-10-08 Ricoh Co Ltd Facsimile equipment
JPH0591348A (en) * 1991-09-27 1993-04-09 Nec Corp Facsimile communication terminal equipment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5781780A (en) * 1980-11-11 1982-05-21 Nec Corp Facsimile communication system
JPS6359582B2 (en) * 1980-11-11 1988-11-21
JPS57210777A (en) * 1981-06-19 1982-12-24 Sanyo Electric Co Ltd Picture signal recording system for facsimile receiver
JPH0362069B2 (en) * 1981-06-19 1991-09-24 Sanyo Electric Co
JPS60199267A (en) * 1984-03-23 1985-10-08 Ricoh Co Ltd Facsimile equipment
JPH0591348A (en) * 1991-09-27 1993-04-09 Nec Corp Facsimile communication terminal equipment

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