JPS6226632B2 - - Google Patents

Info

Publication number
JPS6226632B2
JPS6226632B2 JP54142809A JP14280979A JPS6226632B2 JP S6226632 B2 JPS6226632 B2 JP S6226632B2 JP 54142809 A JP54142809 A JP 54142809A JP 14280979 A JP14280979 A JP 14280979A JP S6226632 B2 JPS6226632 B2 JP S6226632B2
Authority
JP
Japan
Prior art keywords
dot matrix
pixel
value
values
dot
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
JP54142809A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5666970A (en
Inventor
Yoshiaki Kurosawa
Sadaichi Watanabe
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric 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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Priority to JP14280979A priority Critical patent/JPS5666970A/ja
Publication of JPS5666970A publication Critical patent/JPS5666970A/ja
Publication of JPS6226632B2 publication Critical patent/JPS6226632B2/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
    • H04N1/40—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
JP14280979A 1979-11-06 1979-11-06 Binary device of variable density type picture Granted JPS5666970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14280979A JPS5666970A (en) 1979-11-06 1979-11-06 Binary device of variable density type picture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14280979A JPS5666970A (en) 1979-11-06 1979-11-06 Binary device of variable density type picture

Publications (2)

Publication Number Publication Date
JPS5666970A JPS5666970A (en) 1981-06-05
JPS6226632B2 true JPS6226632B2 (enrdf_load_stackoverflow) 1987-06-10

Family

ID=15324131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14280979A Granted JPS5666970A (en) 1979-11-06 1979-11-06 Binary device of variable density type picture

Country Status (1)

Country Link
JP (1) JPS5666970A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5844861A (ja) * 1981-09-11 1983-03-15 Nippon Telegr & Teleph Corp <Ntt> 中間調信号処理方式
JPS59141873A (ja) * 1983-02-03 1984-08-14 Nec Corp 適応擬似中間調化回路

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2423817A1 (de) * 1973-07-16 1975-02-06 Ibm Verfahren und schaltungsanordnungen zur codierung zweidimensionaler bildinformationen
JPS5299720A (en) * 1976-02-18 1977-08-22 Toshiba Corp Method of converting analogous image signal to binary value
JPS54144141A (en) * 1978-05-01 1979-11-10 Ricoh Co Ltd Display method for intermediate tone

Also Published As

Publication number Publication date
JPS5666970A (en) 1981-06-05

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