JPS57119567A - Tricolor encoding system - Google Patents

Tricolor encoding system

Info

Publication number
JPS57119567A
JPS57119567A JP56005141A JP514181A JPS57119567A JP S57119567 A JPS57119567 A JP S57119567A JP 56005141 A JP56005141 A JP 56005141A JP 514181 A JP514181 A JP 514181A JP S57119567 A JPS57119567 A JP S57119567A
Authority
JP
Japan
Prior art keywords
brl
color shift
encoding
wrl
field
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
JP56005141A
Other languages
Japanese (ja)
Other versions
JPS6358426B2 (en
Inventor
Mutsuo Ogawa
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 JP56005141A priority Critical patent/JPS57119567A/en
Publication of JPS57119567A publication Critical patent/JPS57119567A/en
Publication of JPS6358426B2 publication Critical patent/JPS6358426B2/ja
Granted 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 realize a tricolor encoding system which never extends transmission time by using the run-length code of one of two colors by inserting a color shift code for the transmission of the 3rd color by a bicolor facsimile equipment. CONSTITUTION:An original where black (B) characters and red (R) characters are written on a white (WS) ground is read, and picture signal for three colors in a field Y obtained from the beginning of each line in a field X is encoded as shown in a field Z. When R appears, run lengths BRL and WRL of black and white which show that neither B nor W appears are set to 0, and a color shift code generated in said combination is inserted to encode the R as the BRL without changing the encoding order of the BRL and WRL, thus performing a color shift of the BRL. When the encoding is performed in the order of the R, B and R as shown by the 9th line, the 1st R is encoded and then the BRL need by expressed as the B and R alternately, so a color shift WRL=0 is inserted for every time to performing the run-length encoding of the B and R.
JP56005141A 1981-01-19 1981-01-19 Tricolor encoding system Granted JPS57119567A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56005141A JPS57119567A (en) 1981-01-19 1981-01-19 Tricolor encoding system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56005141A JPS57119567A (en) 1981-01-19 1981-01-19 Tricolor encoding system

Publications (2)

Publication Number Publication Date
JPS57119567A true JPS57119567A (en) 1982-07-26
JPS6358426B2 JPS6358426B2 (en) 1988-11-15

Family

ID=11603021

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56005141A Granted JPS57119567A (en) 1981-01-19 1981-01-19 Tricolor encoding system

Country Status (1)

Country Link
JP (1) JPS57119567A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3907845A1 (en) * 1988-03-11 1989-09-21 Brother Ind Ltd METHOD AND DEVICE FOR PREPARING AND TRANSMITTING MULTICOLOR IMAGE SIGNALS FOR REPRODUCTION

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55138973A (en) * 1979-04-17 1980-10-30 Nippon Telegr & Teleph Corp <Ntt> Color facsimile signal encoding method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55138973A (en) * 1979-04-17 1980-10-30 Nippon Telegr & Teleph Corp <Ntt> Color facsimile signal encoding method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPS6358426B2 (en) 1988-11-15

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