JPS6135754B2 - - Google Patents

Info

Publication number
JPS6135754B2
JPS6135754B2 JP52148965A JP14896577A JPS6135754B2 JP S6135754 B2 JPS6135754 B2 JP S6135754B2 JP 52148965 A JP52148965 A JP 52148965A JP 14896577 A JP14896577 A JP 14896577A JP S6135754 B2 JPS6135754 B2 JP S6135754B2
Authority
JP
Japan
Prior art keywords
circuit
resistor
transistor
video signal
video
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
JP52148965A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5480754A (en
Inventor
Yojiro Sato
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP14896577A priority Critical patent/JPS5480754A/ja
Publication of JPS5480754A publication Critical patent/JPS5480754A/ja
Publication of JPS6135754B2 publication Critical patent/JPS6135754B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Facsimile Scanning Arrangements (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Projection-Type Copiers In General (AREA)
  • Television Receiver Circuits (AREA)
JP14896577A 1977-12-12 1977-12-12 Image quality adjusting circuit Granted JPS5480754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14896577A JPS5480754A (en) 1977-12-12 1977-12-12 Image quality adjusting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14896577A JPS5480754A (en) 1977-12-12 1977-12-12 Image quality adjusting circuit

Publications (2)

Publication Number Publication Date
JPS5480754A JPS5480754A (en) 1979-06-27
JPS6135754B2 true JPS6135754B2 (da) 1986-08-14

Family

ID=15464615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14896577A Granted JPS5480754A (en) 1977-12-12 1977-12-12 Image quality adjusting circuit

Country Status (1)

Country Link
JP (1) JPS5480754A (da)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2526376B2 (ja) * 1985-08-01 1996-08-21 工業技術院長 コントラスト自動変換方式
JP2526375B2 (ja) * 1985-08-01 1996-08-21 工業技術院長 濃度階調変換方式
JPH0799861B2 (ja) * 1991-02-28 1995-10-25 松下電器産業株式会社 階調補正回路
JP3255677B2 (ja) * 1992-01-14 2002-02-12 松下電器産業株式会社 自動階調補正回路と輝度制御方法
US5391944A (en) * 1992-01-22 1995-02-21 Matsushita Electric Industrial Co., Ltd. Image-tone control circuit and gradient adjusting circuit therefor
KR100439544B1 (ko) * 2002-03-25 2004-07-12 엘지전자 주식회사 영상신호의 특성조정장치

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5136194A (da) * 1974-09-20 1976-03-26 Sanyo Jido Hanbaiki Kk

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5136194A (da) * 1974-09-20 1976-03-26 Sanyo Jido Hanbaiki Kk

Also Published As

Publication number Publication date
JPS5480754A (en) 1979-06-27

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