JPS5957575A - 画信号修正装置 - Google Patents

画信号修正装置

Info

Publication number
JPS5957575A
JPS5957575A JP57167801A JP16780182A JPS5957575A JP S5957575 A JPS5957575 A JP S5957575A JP 57167801 A JP57167801 A JP 57167801A JP 16780182 A JP16780182 A JP 16780182A JP S5957575 A JPS5957575 A JP S5957575A
Authority
JP
Japan
Prior art keywords
circuit
white
signal
black
lower limit
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
JP57167801A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0160985B2 (enrdf_load_stackoverflow
Inventor
Iwao Tanahashi
巌 棚橋
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
NEC Corp
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP57167801A priority Critical patent/JPS5957575A/ja
Publication of JPS5957575A publication Critical patent/JPS5957575A/ja
Publication of JPH0160985B2 publication Critical patent/JPH0160985B2/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)
JP57167801A 1982-09-27 1982-09-27 画信号修正装置 Granted JPS5957575A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57167801A JPS5957575A (ja) 1982-09-27 1982-09-27 画信号修正装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57167801A JPS5957575A (ja) 1982-09-27 1982-09-27 画信号修正装置

Publications (2)

Publication Number Publication Date
JPS5957575A true JPS5957575A (ja) 1984-04-03
JPH0160985B2 JPH0160985B2 (enrdf_load_stackoverflow) 1989-12-26

Family

ID=15856355

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57167801A Granted JPS5957575A (ja) 1982-09-27 1982-09-27 画信号修正装置

Country Status (1)

Country Link
JP (1) JPS5957575A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6153868A (ja) * 1984-08-24 1986-03-17 Dainippon Screen Mfg Co Ltd 画像走査信号処理におけるキャリブレーション装置
DE4016954A1 (de) * 1989-05-26 1990-11-29 Ricoh Kk Bildlesevorrichtung
JPH0491028U (enrdf_load_stackoverflow) * 1990-12-25 1992-08-07

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5553971A (en) * 1978-10-16 1980-04-19 Oki Electric Ind Co Ltd Facsimile graphic input device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5553971A (en) * 1978-10-16 1980-04-19 Oki Electric Ind Co Ltd Facsimile graphic input device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6153868A (ja) * 1984-08-24 1986-03-17 Dainippon Screen Mfg Co Ltd 画像走査信号処理におけるキャリブレーション装置
DE4016954A1 (de) * 1989-05-26 1990-11-29 Ricoh Kk Bildlesevorrichtung
US5124810A (en) * 1989-05-26 1992-06-23 Ricoh Company, Ltd. Image reading apparatus
JPH0491028U (enrdf_load_stackoverflow) * 1990-12-25 1992-08-07

Also Published As

Publication number Publication date
JPH0160985B2 (enrdf_load_stackoverflow) 1989-12-26

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