JPS58127469A - 自動コントラスト補正回路 - Google Patents

自動コントラスト補正回路

Info

Publication number
JPS58127469A
JPS58127469A JP1068482A JP1068482A JPS58127469A JP S58127469 A JPS58127469 A JP S58127469A JP 1068482 A JP1068482 A JP 1068482A JP 1068482 A JP1068482 A JP 1068482A JP S58127469 A JPS58127469 A JP S58127469A
Authority
JP
Japan
Prior art keywords
signal
line
image signal
peak value
amplification
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
JP1068482A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6340072B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
Hideyuki Hanaoka
花岡　秀行
Mitsuo Togashi
富樫　光夫
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.)
Panasonic System Solutions Japan Co Ltd
Original Assignee
Matsushita Graphic Communication Systems 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 Matsushita Graphic Communication Systems Inc filed Critical Matsushita Graphic Communication Systems Inc
Priority to JP1068482A priority Critical patent/JPS58127469A/ja
Publication of JPS58127469A publication Critical patent/JPS58127469A/ja
Publication of JPS6340072B2 publication Critical patent/JPS6340072B2/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)
  • Facsimile Image Signal Circuits (AREA)
JP1068482A 1982-01-25 1982-01-25 自動コントラスト補正回路 Granted JPS58127469A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1068482A JPS58127469A (ja) 1982-01-25 1982-01-25 自動コントラスト補正回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1068482A JPS58127469A (ja) 1982-01-25 1982-01-25 自動コントラスト補正回路

Publications (2)

Publication Number Publication Date
JPS58127469A true JPS58127469A (ja) 1983-07-29
JPS6340072B2 JPS6340072B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-08-09

Family

ID=11757085

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1068482A Granted JPS58127469A (ja) 1982-01-25 1982-01-25 自動コントラスト補正回路

Country Status (1)

Country Link
JP (1) JPS58127469A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63208367A (ja) * 1987-02-24 1988-08-29 Matsushita Graphic Commun Syst Inc 画像信号補正装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53115214A (en) * 1977-03-14 1978-10-07 Dacom Inc Automatic lamp compensation circuit
JPS565762A (en) * 1979-06-28 1981-01-21 Uchida Yoko:Kk Automatic adjusting circuit for background density in stencil paper making machine
JPS56111375A (en) * 1980-02-07 1981-09-03 Ricoh Co Ltd Picture signal amplifying circuit
JPS56157577A (en) * 1980-05-09 1981-12-04 Hitachi Ltd Signal procession device
JPS56157575A (en) * 1980-05-09 1981-12-04 Hitachi Ltd Signal procession device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53115214A (en) * 1977-03-14 1978-10-07 Dacom Inc Automatic lamp compensation circuit
JPS565762A (en) * 1979-06-28 1981-01-21 Uchida Yoko:Kk Automatic adjusting circuit for background density in stencil paper making machine
JPS56111375A (en) * 1980-02-07 1981-09-03 Ricoh Co Ltd Picture signal amplifying circuit
JPS56157577A (en) * 1980-05-09 1981-12-04 Hitachi Ltd Signal procession device
JPS56157575A (en) * 1980-05-09 1981-12-04 Hitachi Ltd Signal procession device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63208367A (ja) * 1987-02-24 1988-08-29 Matsushita Graphic Commun Syst Inc 画像信号補正装置

Also Published As

Publication number Publication date
JPS6340072B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-08-09

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