DE3769283D1 - Bildlesevorrichtung. - Google Patents

Bildlesevorrichtung.

Info

Publication number
DE3769283D1
DE3769283D1 DE8787310060T DE3769283T DE3769283D1 DE 3769283 D1 DE3769283 D1 DE 3769283D1 DE 8787310060 T DE8787310060 T DE 8787310060T DE 3769283 T DE3769283 T DE 3769283T DE 3769283 D1 DE3769283 D1 DE 3769283D1
Authority
DE
Germany
Prior art keywords
image reader
reader
image
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 - Lifetime
Application number
DE8787310060T
Other languages
English (en)
Inventor
Kenichi Suda
Shizuo Hasegawa
Nobuo Matsuoka
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26548939&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3769283(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP61269843A external-priority patent/JP2614609B2/ja
Priority claimed from JP61269842A external-priority patent/JP2617925B2/ja
Application filed by Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE3769283D1 publication Critical patent/DE3769283D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04N1/40056—Circuits for driving or energising particular reading heads or original illumination means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
    • H04N25/63—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to dark current
DE8787310060T 1986-11-14 1987-11-13 Bildlesevorrichtung. Expired - Lifetime DE3769283D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP61269843A JP2614609B2 (ja) 1986-11-14 1986-11-14 画像読取装置
JP61269842A JP2617925B2 (ja) 1986-11-14 1986-11-14 画像読取装置

Publications (1)

Publication Number Publication Date
DE3769283D1 true DE3769283D1 (de) 1991-05-16

Family

ID=26548939

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787310060T Expired - Lifetime DE3769283D1 (de) 1986-11-14 1987-11-13 Bildlesevorrichtung.

Country Status (4)

Country Link
US (1) US4862286A (de)
EP (1) EP0268439B2 (de)
CA (1) CA1283203C (de)
DE (1) DE3769283D1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4979027A (en) * 1987-07-15 1990-12-18 Canon Kabushiki Kaisha Image reading apparatus having amplification factors vary in response to a spatial frequency of an input image signal
US5185659A (en) * 1988-08-31 1993-02-09 Canon Kabushiki Kaisha Color image reading apparatus having common circuitry for the color component signals
JPH0286266A (ja) * 1988-09-21 1990-03-27 Fuji Xerox Co Ltd 画像読取装置
US5017987A (en) * 1989-03-22 1991-05-21 Ricoh Company, Ltd. Contact type image sensor
US4980759A (en) * 1989-08-28 1990-12-25 Polaroid Corporation Calibration system and method for color image scanning
DE69021047T2 (de) * 1989-12-26 1996-03-21 Eastman Kodak Co Verfahren zur ausdehnung des linearbereichs der aufgenommenen bilder eines films.
JPH0435177A (ja) * 1990-05-25 1992-02-05 Suzuki Motor Corp Ｃｃｄ駆動回路
US5329111A (en) * 1991-06-27 1994-07-12 Omron Corporation Image reader with adjustable contrast range
US5235412A (en) * 1992-08-17 1993-08-10 Eastman Kodak Company Electronic color imaging system and analog signal processor therefor
TW522725B (en) * 2000-02-03 2003-03-01 Matsushita Electric Ind Co Ltd Picture input device
JP4464253B2 (ja) 2003-12-09 2010-05-19 株式会社リコー 画像読み取り装置、画像形成装置、画像読み取り方法及び画像形成方法
JP5262744B2 (ja) * 2009-01-20 2013-08-14 富士ゼロックス株式会社 画像読取装置、黒補正実行判定プログラム
JP2011043729A (ja) * 2009-08-24 2011-03-03 Sony Corp 表示装置および電子機器
JP7314752B2 (ja) * 2019-09-30 2023-07-26 株式会社リコー 光電変換素子、読取装置、画像処理装置および光電変換素子の製造方法

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53108228A (en) * 1977-03-03 1978-09-20 Furukawa Electric Co Ltd:The Black-white level adjusting system for still picture scanning engraving device
CH616254A5 (de) * 1977-06-21 1980-03-14 Landis & Gyr Ag
JPS6017194B2 (ja) * 1978-02-10 1985-05-01 工業技術院長 映像信号利得調整方式
US4216503A (en) * 1979-03-26 1980-08-05 Xerox Corporation Signal restoration and gain control for image viewing devices
DE2915398A1 (de) * 1979-04-14 1980-10-30 Bbc Brown Boveri & Cie Optoelektronisches mess- und sensorsystem
JPS5923467B2 (ja) * 1979-04-16 1984-06-02 株式会社日立製作所 位置検出方法
JPS55138975A (en) * 1979-04-18 1980-10-30 Ricoh Co Ltd Color facsimile signal transmission system
JPS56102168A (en) * 1980-01-19 1981-08-15 Fujitsu Ltd Video signal processing
JPS56111374A (en) * 1980-02-08 1981-09-03 Canon Inc Picture scanner
US4285004A (en) * 1980-02-25 1981-08-18 Ampex Corporation Total raster error correction apparatus and method for the automatic set up of television cameras and the like
JPS56125156A (en) * 1980-02-26 1981-10-01 Asahi Optical Co Ltd Synthetic circuit of video signal
US4589034A (en) * 1980-12-05 1986-05-13 Canon Kabushiki Kaisha Image processing apparatus
JPS5856570A (ja) * 1981-09-30 1983-04-04 Nippon Telegr & Teleph Corp <Ntt> カラ−読取装置
EP0233990A3 (de) * 1981-11-09 1988-02-03 Amf Cybrid Limited Muster-Abtastvorrichtung
US4525741A (en) * 1982-11-03 1985-06-25 Ncr Corporation Self-adjusting video camera
JPS5986361A (ja) * 1982-11-09 1984-05-18 Toshiba Corp カラ−密着センサ
JPS5986362A (ja) * 1982-11-09 1984-05-18 Toshiba Corp 密着センサ
JPS59223073A (ja) * 1983-06-01 1984-12-14 Canon Inc 画像処理装置
DE3427659A1 (de) * 1983-07-29 1985-02-07 Canon K.K., Tokio/Tokyo Vorlagenleser
US4691114A (en) * 1984-02-29 1987-09-01 Canon Kabushiki Kaisha Original reader with variable magnification and time delay
US4555732A (en) * 1984-03-22 1985-11-26 Xerox Corporation Image sensor correction system
JPS6113860A (ja) * 1984-06-29 1986-01-22 Toshiba Corp 情報読取り装置
KR900002808B1 (ko) * 1984-07-26 1990-04-30 가부시끼 가이샤 도시바 화상 판독 장치

Also Published As

Publication number Publication date
CA1283203C (en) 1991-04-16
EP0268439A2 (de) 1988-05-25
EP0268439B1 (de) 1991-04-10
EP0268439B2 (de) 1998-10-28
US4862286A (en) 1989-08-29
EP0268439A3 (en) 1988-11-17

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings