DE69418843D1 - Bilderzeugungsverfahren und -vorrichtung - Google Patents

Bilderzeugungsverfahren und -vorrichtung

Info

Publication number
DE69418843D1
DE69418843D1 DE69418843T DE69418843T DE69418843D1 DE 69418843 D1 DE69418843 D1 DE 69418843D1 DE 69418843 T DE69418843 T DE 69418843T DE 69418843 T DE69418843 T DE 69418843T DE 69418843 D1 DE69418843 D1 DE 69418843D1
Authority
DE
Germany
Prior art keywords
imaging method
imaging
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
DE69418843T
Other languages
English (en)
Other versions
DE69418843T2 (de
Inventor
Hideyuki Nagata
Shigeo Yamagata
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 DE69418843D1 publication Critical patent/DE69418843D1/de
Application granted granted Critical
Publication of DE69418843T2 publication Critical patent/DE69418843T2/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
    • H04N1/00838—Preventing unauthorised reproduction
    • H04N1/00856—Preventive measures
    • H04N1/00864—Modifying the reproduction, e.g. outputting a modified copy of a scanned original
    • H04N1/00867—Modifying the reproduction, e.g. outputting a modified copy of a scanned original with additional data, e.g. by adding a warning message
    • 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
    • H04N1/00838—Preventing unauthorised reproduction
    • H04N1/00856—Preventive measures
    • H04N1/00864—Modifying the reproduction, e.g. outputting a modified copy of a scanned original
    • H04N1/00867—Modifying the reproduction, e.g. outputting a modified copy of a scanned original with additional data, e.g. by adding a warning message
    • H04N1/0087—Modifying the reproduction, e.g. outputting a modified copy of a scanned original with additional data, e.g. by adding a warning message with hidden additional data, e.g. data invisible to the human eye
    • 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
    • H04N1/403—Discrimination between the two tones in the picture signal of a two-tone original
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3269—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of machine readable codes or marks, e.g. bar codes or glyphs
    • H04N2201/327—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of machine readable codes or marks, e.g. bar codes or glyphs which are undetectable to the naked eye, e.g. embedded codes
DE69418843T 1993-12-22 1994-12-21 Bilderzeugungsverfahren und -vorrichtung Expired - Fee Related DE69418843T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32422193A JP3295202B2 (ja) 1993-12-22 1993-12-22 画像形成装置

Publications (2)

Publication Number Publication Date
DE69418843D1 true DE69418843D1 (de) 1999-07-08
DE69418843T2 DE69418843T2 (de) 1999-11-11

Family

ID=18163398

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69418843T Expired - Fee Related DE69418843T2 (de) 1993-12-22 1994-12-21 Bilderzeugungsverfahren und -vorrichtung

Country Status (4)

Country Link
US (1) US5719957A (de)
EP (1) EP0660588B1 (de)
JP (1) JP3295202B2 (de)
DE (1) DE69418843T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7319549B2 (en) 2003-03-27 2008-01-15 Lexmark International, Inc. Multiple weight error diffusion
JP5573451B2 (ja) * 2010-07-21 2014-08-20 コニカミノルタ株式会社 画像処理装置及び画像処理方法
JP5725276B2 (ja) * 2010-08-03 2015-05-27 富士ゼロックス株式会社 二値化処理装置、画像処理装置、二値化処理プログラム、画像処理プログラム

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2028092C (en) * 1989-10-23 1996-08-06 Yuji Tanaka Binary image processing apparatus
DE69126250T2 (de) * 1990-07-20 1997-10-09 Canon Kk Vorrichtung zur Bildverarbeitung
EP0508123A1 (de) * 1991-03-09 1992-10-14 Mita Industrial Co., Ltd. Bildverarbeitungsgerät
CA2063785C (en) * 1991-03-25 1998-09-29 Masahiro Funada Image processing apparatus
SG71841A1 (en) * 1991-03-29 2000-04-18 Canon Kk Image processing apparatus and copying machine
JP3313399B2 (ja) * 1991-09-20 2002-08-12 株式会社リコー 画像処理装置
US5457540A (en) * 1992-01-06 1995-10-10 Canon Kabushiki Kaisha Image processing method and apparatus in which identification information is added based on image density
JP3242971B2 (ja) * 1992-02-27 2001-12-25 キヤノン株式会社 画像処理装置およびその方法
CA2106706C (en) * 1992-09-28 1999-07-27 Rie Saito Image forming method and apparatus
JPH0725064A (ja) * 1993-07-07 1995-01-27 Nec Corp 電子写真プリンタの画像形成装置
EP0685959B1 (de) * 1994-05-31 2000-07-26 NEC Corporation Bildverarbeitungsvorrichtung zum Identifizieren von Zeichen-, Foto- und Rasterbildbereichen einer Vorlage

Also Published As

Publication number Publication date
US5719957A (en) 1998-02-17
EP0660588B1 (de) 1999-06-02
EP0660588A3 (de) 1995-10-04
JP3295202B2 (ja) 2002-06-24
EP0660588A2 (de) 1995-06-28
JPH07184030A (ja) 1995-07-21
DE69418843T2 (de) 1999-11-11

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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