JPH046302B2 - - Google Patents

Info

Publication number
JPH046302B2
JPH046302B2 JP56031129A JP3112981A JPH046302B2 JP H046302 B2 JPH046302 B2 JP H046302B2 JP 56031129 A JP56031129 A JP 56031129A JP 3112981 A JP3112981 A JP 3112981A JP H046302 B2 JPH046302 B2 JP H046302B2
Authority
JP
Japan
Prior art keywords
signal
image
area
dither
horizontal
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 - Lifetime
Application number
JP56031129A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57147373A (en
Inventor
Takehiko Shibata
Yoshikazu Yokomizo
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP56031129A priority Critical patent/JPS57147373A/ja
Publication of JPS57147373A publication Critical patent/JPS57147373A/ja
Publication of JPH046302B2 publication Critical patent/JPH046302B2/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)
  • Editing Of Facsimile Originals (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Input (AREA)
JP56031129A 1981-03-06 1981-03-06 Digital picture reproducer Granted JPS57147373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56031129A JPS57147373A (en) 1981-03-06 1981-03-06 Digital picture reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56031129A JPS57147373A (en) 1981-03-06 1981-03-06 Digital picture reproducer

Publications (2)

Publication Number Publication Date
JPS57147373A JPS57147373A (en) 1982-09-11
JPH046302B2 true JPH046302B2 (enrdf_load_stackoverflow) 1992-02-05

Family

ID=12322809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56031129A Granted JPS57147373A (en) 1981-03-06 1981-03-06 Digital picture reproducer

Country Status (1)

Country Link
JP (1) JPS57147373A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5381248A (en) * 1990-05-04 1995-01-10 Canon Kabushiki Kaisha Image processing apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS525543A (en) * 1975-07-02 1977-01-17 Canon Inc Optical scanning device
JPS5566174A (en) * 1978-11-13 1980-05-19 Ricoh Co Ltd Reproducer of gradation picture
JPS55165072A (en) * 1979-06-12 1980-12-23 Toshiba Corp Video signal processor

Also Published As

Publication number Publication date
JPS57147373A (en) 1982-09-11

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