DE69216004D1 - Bildlesevorrichtung - Google Patents

Bildlesevorrichtung

Info

Publication number
DE69216004D1
DE69216004D1 DE69216004T DE69216004T DE69216004D1 DE 69216004 D1 DE69216004 D1 DE 69216004D1 DE 69216004 T DE69216004 T DE 69216004T DE 69216004 T DE69216004 T DE 69216004T DE 69216004 D1 DE69216004 D1 DE 69216004D1
Authority
DE
Germany
Prior art keywords
image reading
reading device
image
reading
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 - Fee Related
Application number
DE69216004T
Other languages
English (en)
Other versions
DE69216004T2 (de
Inventor
Jun Sakakibara
Hajime Nakamura
Junichi Koseki
Katsuya Nagamochi
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.)
Toshiba Corp
Toshiba Intelligent Technology Co Ltd
Original Assignee
Toshiba Corp
Toshiba Intelligent Technology 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 Toshiba Corp, Toshiba Intelligent Technology Co Ltd filed Critical Toshiba Corp
Application granted granted Critical
Publication of DE69216004D1 publication Critical patent/DE69216004D1/de
Publication of DE69216004T2 publication Critical patent/DE69216004T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
    • H04N1/4076—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture
    • H04N1/4078—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture using gradational references, e.g. grey-scale test pattern analysis

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Image Input (AREA)
DE69216004T 1991-08-30 1992-03-25 Bildlesevorrichtung Expired - Fee Related DE69216004T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3220740A JPH0563978A (ja) 1991-08-30 1991-08-30 画像読取装置

Publications (2)

Publication Number Publication Date
DE69216004D1 true DE69216004D1 (de) 1997-01-30
DE69216004T2 DE69216004T2 (de) 1997-07-17

Family

ID=16755788

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69216004T Expired - Fee Related DE69216004T2 (de) 1991-08-30 1992-03-25 Bildlesevorrichtung

Country Status (4)

Country Link
US (1) US5206501A (de)
EP (1) EP0529193B1 (de)
JP (1) JPH0563978A (de)
DE (1) DE69216004T2 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06105135A (ja) * 1992-09-24 1994-04-15 Toshiba Corp 集積回路装置およびそれを用いた画像読取装置もしくは画像形成装置
JPH07115495A (ja) * 1993-10-15 1995-05-02 Matsushita Electric Ind Co Ltd 原稿読取装置
JP3410190B2 (ja) * 1993-12-29 2003-05-26 株式会社東芝 画像形成装置及び原稿読取り方法
DE69518124T2 (de) * 1994-05-24 2000-12-14 Fujitsu Ltd Bildabtaster mit Systemerweiterungsfunktion
JPH08321948A (ja) * 1995-05-25 1996-12-03 Sony Corp 画像補正装置
US5523876A (en) * 1995-06-29 1996-06-04 Agfa Division, Bayer Corporation Scanner drive system having minimum rotational error carriage suspension
US5633745A (en) * 1995-09-08 1997-05-27 Umax Data System Inc. To drive the optical system independently by CPU in flatbed scanners
JP3667001B2 (ja) * 1996-09-06 2005-07-06 キヤノン株式会社 画像処理装置及びその方法
US6879730B1 (en) * 1999-04-12 2005-04-12 Fuji Photo Film Co., Ltd. Sensitivity correction method and image reading device
US6922263B2 (en) 2001-10-01 2005-07-26 Kabushiki Kaisha Toshiba Image scanner for use in image forming apparatus
US20040017589A1 (en) * 2002-07-29 2004-01-29 Umax Data Systems Inc. Method for selecting a shading correcting line
TWI245538B (en) * 2004-07-28 2005-12-11 Lite On Technology Corp A high-speed image scanning system and method thereof
US7630103B2 (en) * 2005-03-16 2009-12-08 Kabushiki Kaisha Toshiba Image reading apparatus and image forming apparatus
JP4752605B2 (ja) * 2006-05-15 2011-08-17 ブラザー工業株式会社 画像読取装置
US20090207450A1 (en) * 2008-02-19 2009-08-20 Kabushiki Kaisha Toshiba Image scanning apparatus, shading correction method, and shading correction program
JP5830837B2 (ja) * 2010-09-01 2015-12-09 株式会社リコー 画像読取装置および画像形成装置
JP5578328B2 (ja) * 2011-05-31 2014-08-27 コニカミノルタ株式会社 画像読取装置
EP2530642A1 (de) 2011-05-31 2012-12-05 Thomson Licensing Verfahren zum Beschneiden von 3D-Inhalt
US10218872B2 (en) * 2013-06-05 2019-02-26 Kyocera Document Solutions Inc. Document reading device capable of document reading by both methods of fixed document reading and conveyed document reading which performs black reference correction and image forming apparatus provided with same
JP6142815B2 (ja) * 2014-02-13 2017-06-07 ブラザー工業株式会社 画像読取装置
WO2016147524A1 (ja) 2015-03-19 2016-09-22 パナソニックＩｐマネジメント株式会社 画像読取装置
WO2016152013A1 (ja) 2015-03-26 2016-09-29 パナソニックＩｐマネジメント株式会社 画像読取装置
JP6118997B2 (ja) * 2015-03-27 2017-04-26 パナソニックＩｐマネジメント株式会社 画像読取装置
JP6467598B2 (ja) * 2015-03-27 2019-02-13 パナソニックＩｐマネジメント株式会社 画像読取装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952144A (en) * 1974-10-02 1976-04-20 Faxon Communications Corporation Methods and apparatus for automatic background and contrast control
JPS62293384A (ja) * 1986-06-11 1987-12-19 Toshiba Corp 画像入力装置
DE3778602D1 (de) * 1986-07-18 1992-06-04 Dainippon Screen Mfg Bild-datenverarbeitungsverfahren und anordnung dafuer.
JPH02116259A (ja) * 1988-10-26 1990-04-27 Toshiba Corp 画像形成装置
US5267053A (en) * 1988-10-27 1993-11-30 Eastman Kodak Company Automatic reference control for image scanners
JPH0341876A (ja) * 1989-07-07 1991-02-22 Fuji Photo Film Co Ltd 画像信号補正方法
EP0439357B1 (de) * 1990-01-25 1997-07-23 Hewlett-Packard Company Verfahren und Vorrichtung zur Ausstattung eines Dokumentenlesers mit Sensorkompensation

Also Published As

Publication number Publication date
DE69216004T2 (de) 1997-07-17
US5206501A (en) 1993-04-27
EP0529193A3 (de) 1993-04-14
JPH0563978A (ja) 1993-03-12
EP0529193A2 (de) 1993-03-03
EP0529193B1 (de) 1996-12-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee