DE3420359A1 - Bildlesegeraet - Google Patents

Bildlesegeraet

Info

Publication number
DE3420359A1
DE3420359A1 DE19843420359 DE3420359A DE3420359A1 DE 3420359 A1 DE3420359 A1 DE 3420359A1 DE 19843420359 DE19843420359 DE 19843420359 DE 3420359 A DE3420359 A DE 3420359A DE 3420359 A1 DE3420359 A1 DE 3420359A1
Authority
DE
Germany
Prior art keywords
image
reading
reading device
signal
light source
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
DE19843420359
Other languages
German (de)
English (en)
Other versions
DE3420359C2 (enExample
Inventor
Nao Yokohama Kanagawa Nagashima
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Publication of DE3420359A1 publication Critical patent/DE3420359A1/de
Application granted granted Critical
Publication of DE3420359C2 publication Critical patent/DE3420359C2/de
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
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • 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
    • H04N1/40056—Circuits for driving or energising particular reading heads or original illumination means
    • 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
    • H04N1/401—Compensating positionally unequal response of the pick-up or reproducing head

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Input (AREA)
DE19843420359 1983-06-01 1984-05-30 Bildlesegeraet Granted DE3420359A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58097168A JPS59223062A (ja) 1983-06-01 1983-06-01 画像読取装置

Publications (2)

Publication Number Publication Date
DE3420359A1 true DE3420359A1 (de) 1984-12-06
DE3420359C2 DE3420359C2 (enExample) 1991-08-29

Family

ID=14185043

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843420359 Granted DE3420359A1 (de) 1983-06-01 1984-05-30 Bildlesegeraet

Country Status (3)

Country Link
US (1) US4691365A (enExample)
JP (1) JPS59223062A (enExample)
DE (1) DE3420359A1 (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0196405A3 (en) * 1985-03-30 1986-12-30 Kabushiki Kaisha Toshiba Color picture reader and method for operating the same
EP0150847A3 (en) * 1984-02-01 1987-07-15 Sharp Kabushiki Kaisha Lighting control equipment
DE3931373A1 (de) * 1989-09-20 1991-03-28 Licentia Gmbh Auto-faksimilegeraet mit temperaturschutz
DE4132548A1 (de) * 1990-09-28 1992-04-09 Minolta Camera Kk Bildlesevorrichtung mit verbesserter abschattungskorrektur
US5121199A (en) * 1989-12-01 1992-06-09 Advantest Corporation Color image sensor defect detector using differentiated i and q values

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61187467A (ja) * 1985-02-14 1986-08-21 Matsushita Electric Ind Co Ltd イメ−ジセンサ
US4827351A (en) * 1985-08-14 1989-05-02 Canon Kabushiki Kaisha Image reading apparatus with controlled correction for unevenness in illumination
US4821099A (en) * 1985-08-14 1989-04-11 Canon Kabushiki Kaisha Image reading means with controllable shading correction
JP2632307B2 (ja) * 1986-02-07 1997-07-23 富士通株式会社 画像信号の量子化装置
US4933983A (en) * 1986-02-14 1990-06-12 Canon Kabushiki Kaisha Image data reading apparatus
JPH0828793B2 (ja) * 1986-02-28 1996-03-21 キヤノン株式会社 画像入力装置
JPS62230263A (ja) * 1986-03-31 1987-10-08 Toshiba Corp 画像信号処理回路
US5038225A (en) * 1986-04-04 1991-08-06 Canon Kabushiki Kaisha Image reading apparatus with black-level and/or white level correction
US5073959A (en) * 1986-10-24 1991-12-17 Canon Kabushiki Kaisha Image processing apparatus with contour extraction
US5036405A (en) * 1986-11-19 1991-07-30 Canon Kabushiki Kaisha Image amending method
US5121230A (en) * 1987-01-19 1992-06-09 Canon Kabushiki Kaisha Image reading apparatus having adjusting circuits for matching the level of and compensating for fluctuation among a plurality of sensing elements
JPS63193665A (ja) * 1987-02-04 1988-08-10 Fuji Xerox Co Ltd 画像読取装置
US4888492A (en) * 1987-03-03 1989-12-19 Canon Kabushiki Kaisha Image reading apparatus
US5042078A (en) * 1987-06-19 1991-08-20 Fuji Photo Film Co., Ltd. Method of effecting gradation and color correction of a composite image
JPS6442243A (en) * 1987-08-07 1989-02-14 Fuji Photo Film Co Ltd Density correction in optical scan recording
US5347370A (en) * 1992-12-28 1994-09-13 Nisca Corporation Shading correction method and apparatus
JPH07336501A (ja) * 1994-06-08 1995-12-22 Minolta Co Ltd 光源を含んだ撮像システム
US6100919A (en) * 1994-09-07 2000-08-08 Minolta Co., Ltd. Film image reproduction apparatus utilizing apparatus illumination characteristics for film image reproduction
JP3032438U (ja) * 1996-06-14 1996-12-24 ミネベア株式会社 軸流送風機
DE69834324T2 (de) 1998-09-22 2007-05-03 Fujifilm Electronic Imaging Ltd. Verbesserungen an Bildprojektionssystemen
JP4001711B2 (ja) * 2000-11-15 2007-10-31 株式会社リコー 画像読取装置
DE10215135A1 (de) * 2001-04-18 2002-10-24 Zeiss Carl Verfahren zur automatischen Regelung von Fokus und Beleuchtung, sowie zur objektivierten Antastung des Kantenortes in der optischen Präzisionsmesstechnik
JP3824927B2 (ja) * 2001-06-22 2006-09-20 株式会社リコー 読取装置、画像形成装置、通信装置および異常画素データ取得方法
JP2003348336A (ja) * 2002-05-24 2003-12-05 Canon Inc 画像処理方法及び装置
US7972206B2 (en) * 2002-11-20 2011-07-05 Wms Gaming Inc. Gaming machine and display device therefor
US7359093B2 (en) * 2004-05-14 2008-04-15 Xerox Corporation Systems and methods for streak detection in image array scanning using overdetermined scanners and column filtering
US8679293B2 (en) * 2007-05-04 2014-03-25 Centre De Recherche Industrielle Du Quebec System and method for optimizing lignocellulosic granular matter refining
US8502180B2 (en) 2009-01-26 2013-08-06 Centre De Recherche Industrielle Du Quebec Apparatus and method having dual sensor unit with first and second sensing fields crossed one another for scanning the surface of a moving article
CA2714235C (en) 2010-04-27 2014-01-07 Centre De Recherche Industrielle Du Quebec Method and system for stabilizing dry-based density of wood chips to be fed to a chip refining process
JP6809501B2 (ja) * 2018-04-09 2021-01-06 京セラドキュメントソリューションズ株式会社 画像読取装置、画像形成装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2354520A1 (de) * 1972-12-18 1974-06-20 Ibm Digitale kompensationsschaltung fuer ein abtastsystem
DE3143571A1 (de) * 1980-11-04 1982-07-29 Canon K.K., Tokyo "verfahren und vorrichtung zur regelung der lichtmenge einer reihenanordnungs-lichtquelle"

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4314281A (en) * 1979-10-12 1982-02-02 Xerox Corporation Shading compensation for scanning apparatus
JPS56161763A (en) * 1980-05-15 1981-12-12 Fuji Xerox Co Ltd Open lamp detecting method for facsimile
US4464789A (en) * 1980-05-19 1984-08-07 Environmental Research Institute Of Michigan Image analyzer for processing multiple frames of image data
JPS5781775A (en) * 1980-11-11 1982-05-21 Iwatsu Electric Co Ltd Image pickup equipment
US4408231A (en) * 1981-07-31 1983-10-04 International Business Machines Corporation Method and apparatus for calibrating a linear array scanning system
US4430748A (en) * 1981-09-21 1984-02-07 Xerox Corporation Image thresholding system
US4541116A (en) * 1984-02-27 1985-09-10 Environmental Research Institute Of Mi Neighborhood image processing stage for implementing filtering operations

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2354520A1 (de) * 1972-12-18 1974-06-20 Ibm Digitale kompensationsschaltung fuer ein abtastsystem
DE3143571A1 (de) * 1980-11-04 1982-07-29 Canon K.K., Tokyo "verfahren und vorrichtung zur regelung der lichtmenge einer reihenanordnungs-lichtquelle"

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150847A3 (en) * 1984-02-01 1987-07-15 Sharp Kabushiki Kaisha Lighting control equipment
EP0196405A3 (en) * 1985-03-30 1986-12-30 Kabushiki Kaisha Toshiba Color picture reader and method for operating the same
US4698669A (en) * 1985-03-30 1987-10-06 Kabushiki Kaisha Toshiba Color picture reader and method for operating the same
DE3931373A1 (de) * 1989-09-20 1991-03-28 Licentia Gmbh Auto-faksimilegeraet mit temperaturschutz
US5121199A (en) * 1989-12-01 1992-06-09 Advantest Corporation Color image sensor defect detector using differentiated i and q values
DE4132548A1 (de) * 1990-09-28 1992-04-09 Minolta Camera Kk Bildlesevorrichtung mit verbesserter abschattungskorrektur
US5253083A (en) * 1990-09-28 1993-10-12 Minolta Camera Kabushiki Kaisha Image reading apparatus having improved shading correction

Also Published As

Publication number Publication date
US4691365A (en) 1987-09-01
JPS59223062A (ja) 1984-12-14
JPH0527295B2 (enExample) 1993-04-20
DE3420359C2 (enExample) 1991-08-29

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition