JPS55138973A - Color facsimile signal encoding method - Google Patents

Color facsimile signal encoding method

Info

Publication number
JPS55138973A
JPS55138973A JP4602079A JP4602079A JPS55138973A JP S55138973 A JPS55138973 A JP S55138973A JP 4602079 A JP4602079 A JP 4602079A JP 4602079 A JP4602079 A JP 4602079A JP S55138973 A JPS55138973 A JP S55138973A
Authority
JP
Japan
Prior art keywords
white
black
run
length
red
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.)
Granted
Application number
JP4602079A
Other languages
Japanese (ja)
Other versions
JPS6031388B2 (en
Inventor
Tetsuji Yamamoto
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 JP54046020A priority Critical patent/JPS6031388B2/en
Publication of JPS55138973A publication Critical patent/JPS55138973A/en
Publication of JPS6031388B2 publication Critical patent/JPS6031388B2/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
    • H04N1/46—Colour picture communication systems
    • H04N1/64—Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Image Communication Systems (AREA)

Abstract

PURPOSE:To generate white, black and red codes by a white black two valued facsimile redundancy suppressive encoder, by adding a function by which red is encoded by either white or black. CONSTITUTION:A status discrimination circuit 10, a changeover circuit 3, a control logical circuit 12 and a red, black, white status display circuit 11 are added to that which encodes a facsimile signal from the transmission side interface circuit 1 by a run-length counter 2, a white black run-length changeover circuit 3 and run-length generators 4, 5. In case of white black binary encoding, the changeover circuit 3 is changed alternately in accordance with the rule by which white and black appear alternately. In case of red encoding, a flag displaying red, a code showing which has been used between white run-length and black run-length, and its run length code are transmitted. Thus, three valued encoding can be performed by use of a two valued encoder.
JP54046020A 1979-04-17 1979-04-17 Color facsimile signal encoding method Expired JPS6031388B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54046020A JPS6031388B2 (en) 1979-04-17 1979-04-17 Color facsimile signal encoding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54046020A JPS6031388B2 (en) 1979-04-17 1979-04-17 Color facsimile signal encoding method

Publications (2)

Publication Number Publication Date
JPS55138973A true JPS55138973A (en) 1980-10-30
JPS6031388B2 JPS6031388B2 (en) 1985-07-22

Family

ID=12735358

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54046020A Expired JPS6031388B2 (en) 1979-04-17 1979-04-17 Color facsimile signal encoding method

Country Status (1)

Country Link
JP (1) JPS6031388B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS574661A (en) * 1980-06-10 1982-01-11 Ricoh Co Ltd Digital compression transmitting method of color picture information
JPS57119567A (en) * 1981-01-19 1982-07-26 Ricoh Co Ltd Tricolor encoding system
DE3907845A1 (en) * 1988-03-11 1989-09-21 Brother Ind Ltd METHOD AND DEVICE FOR PREPARING AND TRANSMITTING MULTICOLOR IMAGE SIGNALS FOR REPRODUCTION

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS574661A (en) * 1980-06-10 1982-01-11 Ricoh Co Ltd Digital compression transmitting method of color picture information
JPH0147948B2 (en) * 1980-06-10 1989-10-17 Ricoh Kk
JPS57119567A (en) * 1981-01-19 1982-07-26 Ricoh Co Ltd Tricolor encoding system
JPS6358426B2 (en) * 1981-01-19 1988-11-15 Ricoh Kk
DE3907845A1 (en) * 1988-03-11 1989-09-21 Brother Ind Ltd METHOD AND DEVICE FOR PREPARING AND TRANSMITTING MULTICOLOR IMAGE SIGNALS FOR REPRODUCTION
US5276509A (en) * 1988-03-11 1994-01-04 Brother Kogyo Kabushiki Kaisha Multi-color facsimile apparatus having different data preparation and transmission modes and data preparations and transmission method practiced by the apparatus
DE3907845C5 (en) * 1988-03-11 2004-10-28 Brother Kogyo K.K., Nagoya Image transmission method and facsimile machine

Also Published As

Publication number Publication date
JPS6031388B2 (en) 1985-07-22

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