DE69318885T2 - Automatische Verschiebung und Verstärkungssteuerung für einen Dokumentenabtaster - Google Patents
Automatische Verschiebung und Verstärkungssteuerung für einen DokumentenabtasterInfo
- Publication number
- DE69318885T2 DE69318885T2 DE69318885T DE69318885T DE69318885T2 DE 69318885 T2 DE69318885 T2 DE 69318885T2 DE 69318885 T DE69318885 T DE 69318885T DE 69318885 T DE69318885 T DE 69318885T DE 69318885 T2 DE69318885 T2 DE 69318885T2
- Authority
- DE
- Germany
- Prior art keywords
- gain control
- automatic shift
- document scanner
- scanner
- document
- 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
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
-
- 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
- H04N25/67—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response
- H04N25/671—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response for non-uniformity detection or correction
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
- Facsimile Scanning Arrangements (AREA)
- Image Input (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92201227 | 1992-05-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69318885D1 DE69318885D1 (de) | 1998-07-09 |
DE69318885T2 true DE69318885T2 (de) | 1999-01-21 |
Family
ID=8210584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69318885T Expired - Fee Related DE69318885T2 (de) | 1992-05-04 | 1993-03-27 | Automatische Verschiebung und Verstärkungssteuerung für einen Dokumentenabtaster |
Country Status (3)
Country | Link |
---|---|
US (1) | US5331428A (de) |
JP (1) | JPH07274000A (de) |
DE (1) | DE69318885T2 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5915049A (en) * | 1992-02-25 | 1999-06-22 | Pfu Limited | Binarization system for an image scanner |
US5625718A (en) * | 1992-02-25 | 1997-04-29 | Pfu Limited | White level setting system for an image scanner |
US6233360B1 (en) * | 1996-09-24 | 2001-05-15 | Xerox Corporation | Method and system for hybrid error diffusion processing of image information using adaptive white and black reference values |
JP4116254B2 (ja) * | 1998-09-30 | 2008-07-09 | ミクロナス ゲゼルシャフト ミット ベシュレンクテル ハフツング | ライン及びカラムへのアドレスが可能な画像センサーにおける露光に依存するノイズの修正方法及び装置 |
US6249358B1 (en) * | 1998-12-23 | 2001-06-19 | Eastman Kodak Company | Method of scanning photographic film images using selectively determined system response gain calibration |
JP4609682B2 (ja) * | 2000-11-29 | 2011-01-12 | ソニー株式会社 | 通信システム、情報処理方法 |
DE10132589B4 (de) | 2001-07-05 | 2005-11-03 | Koenig & Bauer Ag | Verfahren zur qualitativen Beurteilung von Material |
DE10208289C1 (de) * | 2002-02-26 | 2003-02-27 | Koenig & Bauer Ag | Elektronischer Bildsensor und ein Verfahren zur Auswertung |
DE10208285A1 (de) * | 2002-02-26 | 2003-09-18 | Koenig & Bauer Ag | Verfahren zur Korrektur der Bilddaten eines Kamerasystems |
KR100484163B1 (ko) * | 2002-09-14 | 2005-04-19 | 삼성전자주식회사 | 디지털 화질 개선 방법 및 장치 |
TW200407030A (en) * | 2002-10-30 | 2004-05-01 | Umax Data Systems Inc | Image compensation method |
US7359090B2 (en) * | 2003-12-22 | 2008-04-15 | Lexmark International, Inc. | Shading an optical sensing element such as in a scanner |
US20060001921A1 (en) * | 2004-06-30 | 2006-01-05 | Bailey James R | System and method for high-performance scanner calibration |
US20060082839A1 (en) * | 2004-10-15 | 2006-04-20 | Xerox Corporation | System for processing image signals from an image scanner having a platen and a document handler |
US20060139708A1 (en) * | 2004-12-23 | 2006-06-29 | Destiny Technology Corporation | Method for correcting the response of charge coupled device |
JP2011123876A (ja) * | 2009-11-12 | 2011-06-23 | Semiconductor Energy Lab Co Ltd | 半導体装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4216503A (en) * | 1979-03-26 | 1980-08-05 | Xerox Corporation | Signal restoration and gain control for image viewing devices |
JPH02230869A (ja) * | 1989-03-03 | 1990-09-13 | Ricoh Co Ltd | ゲインコントロール回路 |
-
1993
- 1993-03-27 DE DE69318885T patent/DE69318885T2/de not_active Expired - Fee Related
- 1993-04-06 US US08/042,766 patent/US5331428A/en not_active Expired - Lifetime
- 1993-04-26 JP JP5123328A patent/JPH07274000A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPH07274000A (ja) | 1995-10-20 |
US5331428A (en) | 1994-07-19 |
DE69318885D1 (de) | 1998-07-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8320 | Willingness to grant licences declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |