JPH0369231B2 - - Google Patents

Info

Publication number
JPH0369231B2
JPH0369231B2 JP57078181A JP7818182A JPH0369231B2 JP H0369231 B2 JPH0369231 B2 JP H0369231B2 JP 57078181 A JP57078181 A JP 57078181A JP 7818182 A JP7818182 A JP 7818182A JP H0369231 B2 JPH0369231 B2 JP H0369231B2
Authority
JP
Japan
Prior art keywords
image signal
circuit
level
black
white
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
JP57078181A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58196765A (ja
Inventor
Yoshikazu Komizo
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 JP57078181A priority Critical patent/JPS58196765A/ja
Priority to US06/491,797 priority patent/US4667237A/en
Publication of JPS58196765A publication Critical patent/JPS58196765A/ja
Publication of JPH0369231B2 publication Critical patent/JPH0369231B2/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
    • H04N1/403—Discrimination between the two tones in the picture signal of a two-tone original

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Input (AREA)
JP57078181A 1982-05-12 1982-05-12 画像信号二値化装置 Granted JPS58196765A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP57078181A JPS58196765A (ja) 1982-05-12 1982-05-12 画像信号二値化装置
US06/491,797 US4667237A (en) 1982-05-12 1983-05-05 Image signal processing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57078181A JPS58196765A (ja) 1982-05-12 1982-05-12 画像信号二値化装置

Publications (2)

Publication Number Publication Date
JPS58196765A JPS58196765A (ja) 1983-11-16
JPH0369231B2 true JPH0369231B2 (enrdf_load_stackoverflow) 1991-10-31

Family

ID=13654791

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57078181A Granted JPS58196765A (ja) 1982-05-12 1982-05-12 画像信号二値化装置

Country Status (1)

Country Link
JP (1) JPS58196765A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3549357B2 (ja) * 1997-03-10 2004-08-04 松下電器産業株式会社 分離型空気調和装置の室外機

Also Published As

Publication number Publication date
JPS58196765A (ja) 1983-11-16

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