JPH0153542B2 - - Google Patents

Info

Publication number
JPH0153542B2
JPH0153542B2 JP57028333A JP2833382A JPH0153542B2 JP H0153542 B2 JPH0153542 B2 JP H0153542B2 JP 57028333 A JP57028333 A JP 57028333A JP 2833382 A JP2833382 A JP 2833382A JP H0153542 B2 JPH0153542 B2 JP H0153542B2
Authority
JP
Japan
Prior art keywords
facsimile signal
input terminal
comparator
time constant
signal
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
JP57028333A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58146179A (ja
Inventor
Masahisa Kobayashi
Hiroshi Yokoyama
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.)
NEC Corp
Original Assignee
Nippon 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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP57028333A priority Critical patent/JPS58146179A/ja
Publication of JPS58146179A publication Critical patent/JPS58146179A/ja
Publication of JPH0153542B2 publication Critical patent/JPH0153542B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Input (AREA)
  • Facsimile Image Signal Circuits (AREA)
JP57028333A 1982-02-24 1982-02-24 フアクシミリ信号二値化回路 Granted JPS58146179A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57028333A JPS58146179A (ja) 1982-02-24 1982-02-24 フアクシミリ信号二値化回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57028333A JPS58146179A (ja) 1982-02-24 1982-02-24 フアクシミリ信号二値化回路

Publications (2)

Publication Number Publication Date
JPS58146179A JPS58146179A (ja) 1983-08-31
JPH0153542B2 true JPH0153542B2 (en]) 1989-11-14

Family

ID=12245677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57028333A Granted JPS58146179A (ja) 1982-02-24 1982-02-24 フアクシミリ信号二値化回路

Country Status (1)

Country Link
JP (1) JPS58146179A (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01276878A (ja) * 1988-04-27 1989-11-07 Ricoh Elemex Corp 画像読取装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4875132A (en]) * 1972-01-10 1973-10-09
US3842200A (en) * 1972-10-19 1974-10-15 Scanner Contrast processing of video signals with self-adjusting reference
JPS5948589B2 (ja) * 1975-06-23 1984-11-27 株式会社日立製作所 画像信号の２値化変換回路

Also Published As

Publication number Publication date
JPS58146179A (ja) 1983-08-31

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